This spindle device comprises: a housing (2); a rolling bearing (21) that rotatably supports a rotating shaft (3) relative to the housing (2); a first outer ring spacer (41) that is disposed axially forward of the rolling bearing (21), which is exposed to a liquid atmosphere, and that positions the outer ring of the rolling bearing (21) in the axial direction relative to the housing (2); a first inner ring spacer (45) that is disposed radially inward of the first outer ring spacer (41) and that positions the inner ring of the rolling bearing (21) in the axial direction relative to the rotating shaft (3); grease reservoir recesses (42, 46) provided on an inner peripheral surface (41c) of the first outer ring spacer (41) and an outer peripheral surface (45c) of the first inner ring spacer (45), which face each other in proximity to each other; a surface treatment layer (50) having a water-repellent and oil-repellent effect applied to the surfaces of the first outer ring spacer (41) and the first inner ring spacer (45); and grease (60) filled in the grease reservoir recesses (42, 46).
A circulation module (40) in a ball screw (10) comprises: a pair of circulation units (41, 41), in which a nut insertion part (42) to be fitted into a through hole (32) of a nut (30) and a direction-changing part (43) that converts the direction of motion of balls are provided continuously, and which constitute a partial path of a ball circulation path; and a connection securing unit (50) that is disposed between the pair of circulation units (41, 41) and constitutes a remaining partial path of the ball circulation path that communicates with the partial path of the circulation units (41). The circulation units (41) each have pressure-receiving portions respectively provided at the ends of the direction-changing part (43) on the side opposite from the nut insertion part (42). The connection securing unit (50) has a securing part secured to the nut (30) and pressure-applying parts which are provided at both open-end sides of the remaining partial path to respectively press against the pressure-receiving portions.
F16H 25/22 - Mécanismes à vis avec billes, rouleaux ou organes similaires entre pièces travaillant en conjugaisonÉléments essentiels pour l'utilisation de ces organes
A structure is achieved that is capable of switching between enabling and disabling a rotation lock function at the time of a reverse input, said function locking rotation of an output member if a rotation torque has been reversely input into the output member. An output member 4 includes: a first element 33 which has an output-side engaging part 29; a second element 34 which has a torque output part 30, which is arranged coaxially with the first element 33, and which is supported so as to be relatively rotatable with respect to the first element 33; and a coupling member bridged between the first element 33 and the second element 34 so as to be capable of engaging with or disengaging from at least the first element 33 and/or the second element 34.
F16D 41/10 - Roues libres ou embrayages à roue libre avec organes d'accouplement intermédiaires d'arrêt entre une surface intérieure et une surface extérieure avec moyens de modifier le fonctionnement en roue libre à inversion automatique
[Problem] To provide a wheel drive unit that facilitates reduction of the manufacturing cost of a sealing structure for sealing, from radially outside, an engagement region between a hub-side face spline and a joint-side face spline. [Solution] A sealing structure 53 includes an O-ring 43 and an annular cover member 44. The O-ring 43 is locked in a locking groove 45 provided in one of the outer peripheral surface of a hub 5 and the outer peripheral surface of a joint outer ring 22. The annular cover member 44 has: a proximal-side tubular portion 47 which is disposed on the radially outer side of an engagement region between a hub-side face spline 12 and a joint-side face spline 25 and is externally fitted and fixed to a fitting surface portion 46 provided on the other of the outer peripheral surface of the hub 5 and the outer peripheral surface of the joint outer ring 22; and a distal-side tubular portion 48 having an inner peripheral surface in elastic contact with the O ring 43.
B60B 35/14 - Essieux transmettant le couple composites ou coupés, p. ex. demi-essieuxLiaisons entre les éléments ou sections de l'essieu
F16C 19/18 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges à la fois radiales et axiales avec plusieurs rangées de billes
F16J 15/10 - Joints d'étanchéité entre surfaces immobiles entre elles avec garniture solide comprimée entre les surfaces à joindre par garniture non métallique
In this ball screw, steel balls are divided into first steel balls arranged in a rolling path close to one end of a nut and second steel balls arranged in a rolling path close to the other end on the opposite side to the one end, and the direction of preload applied to the first and second steel balls changes where: if the nut is subjected to a compressional stress in the axial direction when a load in the axial direction is applied to the one end of the nut with respect to the screw shaft, the preload applied to the first and second steel balls is directed inward; and if the nut is subjected to a tensile stress in the axial direction when a load in the axial direction is applied to the one end of the nut with respect to the screw shaft, the preload applied to the first and second steel balls is directed outward.
F16H 25/22 - Mécanismes à vis avec billes, rouleaux ou organes similaires entre pièces travaillant en conjugaisonÉléments essentiels pour l'utilisation de ces organes
F16H 25/24 - Éléments essentiels pour ces mécanismes, p. ex. vis, écrous
7.
BALL ARRANGEMENT METHOD FOR BALL BEARING, MANUFACTURING METHOD AND MANUFACTURING DEVICE FOR BALL BEARING, AND MANUFACTURING METHOD FOR MACHINE AND VEHICLE
A ball arrangement method for a ball bearing includes following steps executed in order: a ball insertion step of inserting a plurality of balls in one region along a circumferential direction of an annular space formed between an inner ring and an outer ring; a flow stop step of disposing a flow stop jig outside the one region of the annular space in the circumferential direction to keep the plurality of inserted balls in the one region; a block dividing step of disposing a block dividing jig to divide the plurality of balls into groups in the annular space; and a ball dividing step of, from a state in which the flow stop jig and the block dividing jig are disposed in the annular space, while removing the flow stop jig and the block dividing jig from the annular space, sequentially inserting tip ends of a plurality of work arrows protruded in accordance with the number of balls between the plurality of balls in an axial direction to arrange the plurality of balls at equal intervals in the circumferential direction.
A support mechanism (40) for rotatably supporting both axial ends of a screw shaft (21) comprises: a bearing unit (41) which has a movement-side bearing housing (51) and a pair of angular contact ball bearings (53) that are internally fitted to the movement-side bearing housing (51); a support base (43) which is provided to one side of the bearing unit (41) in the axial direction and through which the screw shaft (21) is inserted; and a housing position adjustment mechanism (60) which is provided between the bearing unit (41) and the support base (43). The housing position adjustment mechanism (60) is provided with: a support-base-side member (61) which is provided to the support base (43) side; a bearing-housing-side member (62) which is provided to the bearing housing (51) side and which is axially movable relative to the support-base-side member (61); a foam member (90) which is disposed in a pressure chamber (66) that is formed between the support-base-side member (61) and the bearing-housing-side member (62), and which has a foam core layer and a solid skin layer that covers the periphery of the foam core layer; and a working fluid (70) which is filled into spaces outside the foam member (90) in the pressure chamber (66). Thus, it is possible to continuously and stably maintain support rigidity in the axial direction even if the axial length of the rotary shaft changes due to the effects of heat.
F16H 25/22 - Mécanismes à vis avec billes, rouleaux ou organes similaires entre pièces travaillant en conjugaisonÉléments essentiels pour l'utilisation de ces organes
F16H 25/24 - Éléments essentiels pour ces mécanismes, p. ex. vis, écrous
9.
ROTATION SUPPORT DEVICE, AND SUPPORT MECHANISM POSITION ADJUSTMENT MECHANISM FOR SHAFT SUPPORT DEVICE
A support mechanism (30) that rotatably supports both axial-direction ends of a screw shaft (21) is provided with a bearing unit (41) having a moving-side bearing housing (51) and a pair of angular contact ball bearings (33), a support base (43), and a housing position adjustment mechanism (44) disposed between the bearing unit (41) and the support base (43). The housing position adjustment mechanism (44) is provided with: a support-base-side member (61) provided on the support-base (43) side; a bearing-housing-side member (62) that is provided on the bearing-housing (51) side and is capable of moving relative to the support-base-side member (61) in the axial direction; a partition member (83) that is disposed within a space (66) formed between the support-base-side member (61) and the bearing-housing-side member (62), the partition member (83) dividing the space (66) in the axial direction into a first space (66A) and a second space (66B); a plurality of disc springs (70) and a first working fluid (80) that are accommodated in a compressed state in the first space (66A); and a foam member (90) and a second working fluid (81) that are accommodated in a compressed state in the second space (66B). This makes it possible to continuously and stably maintain axial support rigidity even if the axial length of a rotating shaft changes due to the influence of heat.
A state diagnosis method for a bearing device including a plurality of rolling bearings which are electrically connected, the method includes measuring an impedance of the plurality of rolling bearings as a whole by applying a voltage to the plurality of rolling bearings by an AC power supply while changing a frequency, deriving an impedance of each of the plurality of rolling bearings by fitting the impedance measured in the measurement step based on an equivalent circuit in which the plurality of rolling bearings are connected in series, and diagnosing a state of each of the plurality of rolling bearings based on the impedance of each of the plurality of rolling bearings derived in the derivation step.
F16C 19/52 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec dispositifs affectés par des conditions anormales ou indésirables
A ball screw device according to the present disclosure comprises a screw shaft, a nut, and a plurality of balls. The outer circumferential surface of the screw shaft is provided with an S-shaped groove surface, and the screw shaft has a corner portion where the outer circumferential surface, and an outer circumferential raceway surface and the S-shaped groove surface, intersect. The ball screw device satisfies expression (1), where Dw is the diameter of the balls, Rn is the radius of a circular arc forming a groove-perpendicular cross section of an inner circumferential raceway surface of the nut, α is the contact angle of the balls with respect to the inner circumferential raceway surface of the nut, θ1 is an angle within the groove-perpendicular cross section representing an effective range of the inner circumferential raceway surface of the nut, Dm is the diameter of a circle joining the centers of the plurality of balls disposed in the raceway, Ds is the diameter of the outer circumferential surface of the screw shaft, Q is the radial-direction distance between the outer circumferential surface of the screw shaft and a portion of the corner part positioned most on the inside in the radial direction if the vertex of the corner part of the screw shaft is shaved, and k (k>1) is a correction coefficient.
F16H 25/22 - Mécanismes à vis avec billes, rouleaux ou organes similaires entre pièces travaillant en conjugaisonÉléments essentiels pour l'utilisation de ces organes
12.
CAGE FOR DEEP GROOVE BALL BEARING AND METHOD FOR MANUFACTURING SAME
This cage for a deep groove ball bearing is made of resin and includes a first pocket for preventing the cage from falling off in a radial direction from the bearing, and a second pocket for preventing the cage from falling off in an axial direction from the bearing. The first pocket has the same cross-sectional shape along the axial direction, and includes, on at least a radially inner edge side or outer edge side, a narrowing portion that narrows an interval between a pair of adjacent pillar portions. The second pocket has the same cross-sectional shape along the radial direction, and includes a claw portion that narrows the interval between a pair of adjacent pillar portions at an edge portion on the opposite side from an annular portion.
F16C 33/41 - Cages à billes comportant une bague portant des doigts de séparation des éléments de roulement
F16C 19/06 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges radiales principalement avec une seule rangée de billes
13.
ROTATION SUPPORT DEVICE, AND SUPPORT MECHANISM POSITION ADJUSTMENT MECHANISM FOR SHAFT SUPPORT DEVICE
A support mechanism (30) for rotatably supporting an axial end portion of a screw shaft (21) comprises: a bearing unit (41) having a movement-side bearing housing (51) and a pair of angular ball bearings (33B); a support base (43); and a housing position adjustment mechanism (44) disposed between the bearing unit (41) and the support base (43). The housing position adjustment mechanism (44) comprises: a support-base-side member (61) provided on the support base (43) side; a bearing-housing-side member (62) provided on the bearing housing (51) side and capable of relative movement in the axial direction with respect to the support-base-side member (61); a working fluid accommodated in a pressure chamber (66) formed between the support-base-side member (61) and the bearing-housing-side member (62), in a storage chamber (71) formed in the support-base-side member or the bearing-housing-side member, and in an orifice (72) through which the pressure chamber (66) and the storage chamber (71) communicate; a disc spring (80) disposed inside the pressure chamber (66) in a state of being compressed between the opposing axial end surfaces of the support-base-side member (61) and the bearing-housing-side member (62); and a foam member (90) accommodated in the storage chamber (71). Through this configuration, axial-direction support rigidity can be continuously and stably maintained even if the axial length of a screw shaft or rotary shaft changes due to the effects of heat.
F16C 35/078 - Montage des roulements à billes ou à rouleauxLeur fixation sur l'arbre ou dans la carcasse d'enveloppe utilisant la pression d'un fluide pour aider au montage
B23Q 5/40 - Avance par transmission mécanique des autres organes supportant les outils ou les pièces, p. ex. avance des traînards, des glissières d'outils à avance continue par un arbre, p. ex. une vis-mère
F16C 25/08 - Roulements à billes ou à rouleaux à autoréglage
F16C 35/07 - Leur fixation sur l'arbre ou dans la carcasse d'enveloppe avec interposition d'un organe
F16C 35/12 - Supports rigides de paliersCorps de paliers, p. ex. calottes, couvercles pour broches avec roulements à billes ou à rouleaux
F16H 25/22 - Mécanismes à vis avec billes, rouleaux ou organes similaires entre pièces travaillant en conjugaisonÉléments essentiels pour l'utilisation de ces organes
F16H 25/24 - Éléments essentiels pour ces mécanismes, p. ex. vis, écrous
A ball screw device includes: a nut having a first track path; an outer circumferential screw shaft having a second track path and a third track path; a plurality of first balls disposed between the first track path and the second track path; an inner circumferential screw shaft having a fourth track path; a plurality of second balls disposed between the third track path and the fourth track path; a first stopper fixed closer to an end of the outer circumferential screw shaft in a first direction; a second stopper fixed closer to an end of the inner circumferential screw shaft in a second direction; and a third stopper fixed closer to an end of the outer circumferential screw shaft in the second direction. The track of the first ball and the track of the second ball are helixes running in a same direction.
F16H 25/22 - Mécanismes à vis avec billes, rouleaux ou organes similaires entre pièces travaillant en conjugaisonÉléments essentiels pour l'utilisation de ces organes
15.
TWO-STAGE TRANSMISSION AND ELECTRIC VEHICLE DRIVE DEVICE
[Problem] To provide a structure facilitating miniaturization of a drive device for an electric vehicle incorporating a two-stage transmission. [Solution] A two-stage transmission 2 is provided with a transmission input element 5, a transmission output element 6, a planetary reduction mechanism 7, a first shift mechanism 8, and a second shift mechanism 9. The planetary reduction mechanism 7 is disposed between the transmission input element 5 and the transmission output element 6 in the axial direction of the transmission input element 5.
The present invention efficiently reads data stored in RFID tags of a plurality of packing boxes. This data reading system comprises: a non-metal packing box that can store a metal product; an RFID tag that is provided inside the packing box and stores data pertaining to the metal product; and a data acquisition device that acquires data from the RFID tag. The packing box has adjacent surface parts adjacent to other packing boxes and side surface parts other than the adjacent surface parts. The RFID tag is provided between the metal product stored in the packing box and the side surface part.
B65G 1/137 - Dispositifs d'emmagasinage mécaniques avec des aménagements ou des moyens de commande automatique pour choisir les objets qui doivent être enlevés
G06K 7/10 - Méthodes ou dispositions pour la lecture de supports d'enregistrement par radiation électromagnétique, p. ex. lecture optiqueMéthodes ou dispositions pour la lecture de supports d'enregistrement par radiation corpusculaire
Provided is a magnetostrictive torque measurement device that makes it easy to ensure accuracy of torque measurement, sensitivity of torque measurement, or both. A magnetostrictive torque measurement device 1 comprises: a rotary shaft 2 that has a detected part 4 that has magnetostrictive characteristics at a portion in the axial direction of an outer circumferential surface; and a magnetostrictive torque sensor 3. The magnetostrictive torque sensor 3 includes: a holder 5 that is formed from a synthetic resin, has an inner circumferential surface 7 that is loosely fitted in the radial direction onto the outside of the detected part 4 so as not to rattle, and does not rotate even during use; and a coil unit 6 that is held by the holder 5 and has a detection part 12 that includes a plurality of detection coils 11 (11a–11d).
G01L 3/10 - Dynamomètres de transmission rotatifs dans lesquels l'élément transmettant le couple comporte un arbre élastique en torsion impliquant des moyens électriques ou magnétiques d'indication
18.
SEALING DEVICE AND SEALING DEVICE-EQUIPPED BEARING UNIT
The present invention provides a sealing device-equipped bearing unit that has lubricant retention properties and that lowers torque. A sealing device (15) is constituted by: seal lips (19a, 19b, 19c) composed of an elastic material; and a mating member (slinger 17) with which the seal lips (19a, 19b, 19c) are in sliding contact. A plurality of dimples (20) are formed in the surface of the region of the mating member (slinger 17) that is in sliding contact with at least the seal lips (19a, 19b, 19c), each of the dimples (20) being constituted by a recess (21) further recessed than the surface of the mating member (slinger 17) and a first protrusion (22) protruding from the surface of the mating member (slinger 17) and surrounding the recess (21). Furthermore, a sealing device-equipped bearing unit (10) is provided with the abovementioned sealing device (15).
F16C 33/78 - Dispositifs d'étanchéité pour roulements à billes ou à rouleaux avec diaphragme, disque ou bague, avec ou sans parties élastiques
F16C 19/06 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges radiales principalement avec une seule rangée de billes
F16C 19/18 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges à la fois radiales et axiales avec plusieurs rangées de billes
F16J 15/324 - Agencements pour graissage ou refroidissement du joint d’étanchéité lui-même
F16J 15/3232 - Joints d'étanchéité entre deux surfaces mobiles l'une par rapport à l'autre par joints élastiques, p. ex. joints toriques avec au moins une lèvre ayant plusieurs lèvres
F16J 15/3256 - Joints d'étanchéité entre deux surfaces mobiles l'une par rapport à l'autre par joints élastiques, p. ex. joints toriques pourvus d’armatures ou de supports avec armatures ou supports rigides comprenant deux éléments d’armature ou de support, individuellement fixés sur chacune des surfaces, p. ex. joints de type cartouche
19.
METHOD FOR ACQUIRING CORRECTION VALUE FOR TORQUE SENSOR, AND METHOD FOR MEASURING TORQUE OF ROTATING SHAFT
The method comprises a step of: actually measuring an output values at a first and second reference temperatures for a torque sensor for which a correction value is to be acquired; determining a provisional correction function, which is a linear function showing a relationship between a temperature and the provisional correction values at the first and second reference temperatures, with using the output values at the first and second reference temperatures as the provisional correction values at the first and second reference temperatures; substituting at least one non-reference temperature into the provisional correction function to obtain a provisional correction value at the non-reference temperature, and correcting the provisional correction value at the non-reference temperature by a correction amount at the non-reference temperature obtained in advance, to obtain a correction value at the at least one non-reference temperature.
G01L 3/10 - Dynamomètres de transmission rotatifs dans lesquels l'élément transmettant le couple comporte un arbre élastique en torsion impliquant des moyens électriques ou magnétiques d'indication
The present invention realizes an electric vehicle comprising a structure with which it is possible to reliably lock the rotation of a driving wheel when the vehicle stops. In a state in which torque with which a vehicle-stop position can be maintained is output by a driving motor 4 of each of one or more driving devices 2 among a plurality of driving devices 2, the output torque of a driving motor 4 of the remaining driving device 2 among the plurality of driving devices 2 is set to 0, as a result of which a pressing surface of an engagement element of a reverse input blocking clutch 6 of the remaining driving device 2 is brought into contact with a pressed surface, and then the output torque of a driving motor 4 of one or a plurality of the driving devices 2 among the one or more driving devices 2 is set to 0, as a result of which a pressing surface of an engaging element of a reverse input blocking clutch 6 of the one or of each of the plurality of driving devices 2 is brought into contact with a pressed surface.
B60L 15/20 - Procédés, circuits ou dispositifs pour commander la propulsion des véhicules à traction électrique, p. ex. commande de la vitesse des moteurs de traction en vue de réaliser des performances désiréesAdaptation sur les véhicules à traction électrique de l'installation de commande à distance à partir d'un endroit fixe, de différents endroits du véhicule ou de différents véhicules d'un même train pour la commande du véhicule ou de son moteur en vue de réaliser des performances désirées, p. ex. vitesse, couple, variation programmée de la vitesse
F16D 41/08 - Roues libres ou embrayages à roue libre avec organes d'accouplement intermédiaires d'arrêt entre une surface intérieure et une surface extérieure avec moyens de modifier le fonctionnement en roue libre
21.
ASSEMBLING METHOD FOR MAGNETOSTRICTIVE TORQUE SENSOR, AND MAGNETOSTRICTIVE TORQUE SENSOR
Realized is an assembling method for a magnetostrictive torque sensor that can easily facilitate reduction in manufacturing costs. When the proportion of a body 12 of a flexible board 8 that faces the outer circumferential surface of a rotary shaft 2 is within a predetermined range in the case where the body 12 faces the whole circumference of the outer circumferential surface of the rotary shaft 2 is defined as 100%, a common flexible board 8 having the same length in the circumferential direction of the body 12 is used.
G01L 3/10 - Dynamomètres de transmission rotatifs dans lesquels l'élément transmettant le couple comporte un arbre élastique en torsion impliquant des moyens électriques ou magnétiques d'indication
22.
METHOD FOR ASSEMBLING MAGNETOSTRICTIVE TORQUE SENSOR AND MAGNETOSTRICTIVE TORQUE SENSOR
When assembling a magnetostrictive torque sensor comprising a holder having a bobbin portion arranged around a rotating shaft to be measured, and a flexible substrate having a main body portion arranged around the bobbin portion and provided with a detection portion configured by a plurality of detection coils, a common flexible substrate having the same length in a circumferential direction of the main body portion is used when a percentage of the main body portion facing an outer circumferential surface of the rotating shaft is in a predetermined range, with a case where the main body portion of the flexible substrate faces the outer circumferential surface of the rotating shaft over an entire circumference being considered as 100%.
G01L 3/10 - Dynamomètres de transmission rotatifs dans lesquels l'élément transmettant le couple comporte un arbre élastique en torsion impliquant des moyens électriques ou magnétiques d'indication
23.
CRIMPING JOINING METHOD, METHOD FOR MANUFACTURING HUB UNIT BEARING, METHOD FOR MANUFACTURING VEHICLE, METHOD FOR MANUFACTURING MACHINE DEVICE, AND CRIMPING DEVICE
B21J 9/02 - Réalisations ou structures particulières
B21D 39/00 - Utilisation de procédés permettant d'assembler des objets ou des parties d'objets, p. ex. revêtement par des tôles, autrement que par placageDispositifs de mandrinage des tubes
B21K 1/05 - Fabrication d'éléments de machines de cages de roulements
B60B 35/14 - Essieux transmettant le couple composites ou coupés, p. ex. demi-essieuxLiaisons entre les éléments ou sections de l'essieu
F16C 19/18 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges à la fois radiales et axiales avec plusieurs rangées de billes
G01L 3/10 - Dynamomètres de transmission rotatifs dans lesquels l'élément transmettant le couple comporte un arbre élastique en torsion impliquant des moyens électriques ou magnétiques d'indication
Provided is a magnetostrictive torque measurement device with which accuracy and sensitivity of torque measurement are easily secured. A magnetostrictive torque measurement device 1 comprises: a support member 4 which is arranged around a rotary shaft 2 rotatably supported with respect to a structural element which does not rotate even in use, so as to be incapable of rotating relative to the structural element; a support bearing 5 which is arranged between the rotary shaft 2 and the support member 4 and supports the support member 4 so as to be able to rotate relative to the rotary shaft 2; and a magnetostrictive torque sensor 6 which is supported by the support member 4, and has an opposing surface 15 which is adjacent to and facing the outer peripheral surface of the rotary shaft 2, and a detection part 17 which is arranged on the outer diameter side of the opposing surface 15 and comprises a plurality of detection coils.
G01L 3/10 - Dynamomètres de transmission rotatifs dans lesquels l'élément transmettant le couple comporte un arbre élastique en torsion impliquant des moyens électriques ou magnétiques d'indication
26.
SIGNAL PROCESSING DEVICE AND SIGNAL PROCESSING METHOD
The present invention provides a signal processing device and a signal processing method, which are capable of improving determination accuracy when determining a lubrication state of a rolling device by threshold value determination on a vibration-state physical quantity indicating a vibration state of the rolling device. The present invention is provided with: an oil-film state physical-quantity calculation unit 51 that, on the basis of a voltage signal applied between an inner ring 111 and an outer ring 112 of a bearing 11, calculates an oil-film state physical-quantity, which is a physical quantity related to an oil film of the bearing 11; and a determination threshold-value calculation unit 53 that calculates a vibration-state physical quantity, which is a physical quantity related to vibration of the bearing 11, on the basis of a measurement signal acquired by a sensor 2, and calculates a determination threshold value used for determining a lubrication state of the bearing 11 on the basis of correlation between the vibration-state physical quantity and the oil-film state physical quantity.
G01M 13/045 - Analyse acoustique ou des vibrations
G01H 17/00 - Mesure des vibrations mécaniques ou des ondes ultrasonores, sonores ou infrasonores non prévue dans les autres groupes de la présente sous-classe
27.
STATE MONITORING METHOD FOR MECHANICAL DEVICE, STATE MONITORING DEVICE, AND PROGRAM
This state monitoring method for a mechanical device that performs a rotation operation comprises an acquisition step for acquiring rotation speed data and vibration data during a rotation operation of the mechanical device, a conversion step for converting the vibration data from a time domain to an angle domain by using the acquired rotation speed data and the vibration data, a re-conversion step for reconverting the converted vibration data into a time domain based on a predetermined reference speed, and a diagnosis step for diagnosing a state of the mechanical device by using the converted vibration data. In the conversion step, when a section where a rotation speed is zero or approximately equal to zero is included in the rotation speed data, the rotation speed data is corrected so that the rotation speed is varied in the section, and then the vibration data is converted into an angle domain.
A two-speed transmission includes: a function of detecting a phase in a rotational direction of a drive cam when an output torque or current value of a shift motor starts increasing at an increase rate equal to or higher than a first threshold value, as a piston touch point, and/or a function of detecting the phase in a rotational direction of the drive cam, after exceeding the piston touch point, when the increase rate becomes equal to or less than a second threshold value, as a clutch touch point, and a function of, when switching between a high reduction ratio mode and a low reduction ratio mode, adjusting a rotation amount of the drive cam on the basis of the piston touch point and/or the clutch touch point.
A linear guide (10) comprises: a guide rail (1) having a raceway groove (3) on a side surface; a slider (2) assembled to the guide rail (1) and having a raceway groove (7) facing the raceway groove (3); and a plurality of rolling elements disposed rollably in a rolling element rolling path (23), which is composed of a load rolling path (22) formed by the raceway grooves (3, 7), and a no-load rolling path (21) provided on the slider (2) and communicating between one end and the other end of the load rolling path (22). One of the guide rail (1) and the slider (2) moves relative to the other as the rolling elements roll. The plurality of rolling elements are constituted by a plurality of steel balls (6), and a plurality of spacer balls (16) smaller than the steel balls (6) and having elasticity. At least one spacer ball (16) is always present in the no-load rolling path (21). The length of a gap in which neither the steel balls (6) nor the spacer balls (16) are present in the rolling element rolling path (23) is 50% or less of the diameter of the steel balls (6), regardless of the position of the rolling elements. Consequently, it is possible to provide a rolling guide device that is easy to assemble and has good operability and excellent repeated positioning accuracy.
F16C 29/06 - Roulements à billes ou à rouleaux dans lesquels les billes ou rouleaux ne supportent la charge que sur une partie du chemin de roulement
F16C 19/18 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges à la fois radiales et axiales avec plusieurs rangées de billes
30.
Display screen or portion thereof with graphical user interface
A method for understanding damage of a bearing includes: a measurement step of measuring at least one first measurement position P1 on a raceway surface (10) of a bearing (1) and at least one second measurement position P2 on a reference surface (11), the reference surface (11) being a surface different from the raceway surface (10) of the bearing (1), using an ECT device; and a determination step of, by comparing a measurement result in the measurement step and a reference value corresponding to measurement values measured by the ECT device on the raceway surface (10) and the reference surface (11) of the bearing (1), the raceway surface (10) and the reference surface (11) being equivalent to a brand-new raceway surface (10) and reference surface (11), respectively, determining a damage degree of the bearing.
Provided is a grease composition that can be used in various environments and can achieve abrasion resistance and low dust-generation properties. The grease composition contains a thickener, a base oil, and a rust inhibitor. The thickener contains an alicyclic-aliphatic diurea. The base oil comprises an ether oil, or comprises an ether oil and a high-viscosity synthetic hydrocarbon oil having a kinematic viscosity at 40°C of 300-500 mm2/s, and the ether oil content is 80 mass% or more based on the total mass of the base oil. The kinematic viscosity of the base oil at 40°C is 90-150 mm2/s, and the kinematic viscosity at -30°C is 60,000 mm2/s or less. The rust inhibitor is a succinic acid-based rust inhibitor. In addition, the 60-stroke worked penetration of the grease composition measured in accordance with JIS K 2220 7 is 180-230.
C10M 169/00 - Compositions lubrifiantes caractérisées en ce qu'elles contiennent comme constituants un mélange d'au moins deux types d'ingrédients, couverts par les groupes précédents, choisis parmi les matériaux de base, les épaississants ou les additifs, chacun de ces composés étant un composé essentiel
C10N 30/00 - Propriétés physiques ou chimiques particulières améliorées par l'additif caractérisant la composition lubrifiante, p. ex. additifs multifonctionnels
C10N 30/06 - OnctuositéRésistance du filmAnti-usureRésistance aux pressions extrêmes
C10N 50/10 - Forme sous laquelle est appliqué le lubrifiant au matériau à lubrifier semi-solideForme sous laquelle est appliqué le lubrifiant au matériau à lubrifier huileuse
Provided is a retainer for a rolling bearing, which retains a plurality of rolling elements, the retainer comprising a first split body and a second split body that are made of resin and have an annular shape. A first connection part of the first split body is provided with a protuberance that protrudes in a direction toward the second split body, and a hook part that is provided to the protuberance. A second connection part of the second split body is provided with: an accommodating hole that receives the protuberance; a step part that comes into contact with the hook part within the accommodating hole and locks the hook part; and a guide wall part that is disposed along a second inner peripheral surface of the second split body, protrudes in a direction toward the first connection part, and guides the protuberance to the accommodating hole.
F16C 19/06 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges radiales principalement avec une seule rangée de billes
A probe is provided with a probe body that comes into contact with a measurement target surface of a bearing and detects an impedance of the bearing, and a housing that includes a hole in which the probe body is accommodated and has a substantially cylindrical shape. A switch is attachable to and detachable from the housing.
G01N 27/90 - Recherche ou analyse des matériaux par l'emploi de moyens électriques, électrochimiques ou magnétiques en recherchant des variables magnétiques pour rechercher la présence des criques en utilisant les courants de Foucault
A rolling bearing device (1) having a lubricating function includes a pair of angular ball bearings (10A, 10B), an outer ring spacer (20), and a pair of inner ring spacers (30A, 30B). The outer ring spacer (20) includes a nozzle part (22) which protrudes toward an inner-diameter side and through the interior of which a lubricant can flow. Each inner ring spacer (30A, 30B) includes: a small-diameter part (31) that faces an inner peripheral surface of a tip portion of the nozzle part (22); and a large-diameter part (32) that faces an axial lateral surface of the tip portion of the nozzle part (22). The inner ring spacers are formed in a stepped shape. The large-diameter part (32) includes: an annular scoop (34); and a discharge nozzle (35) that communicates the scoop (34) and a bearing space of each angular ball bearing (10A, 10B). The outer ring spacer (20) includes: a radial flow path (23) that extends in a radial direction inside the nozzle part (22); and a pair of supply nozzles (24, 24) that are open from the radial flow path (23) to both axial lateral surfaces of the tip portion of the nozzle part (22). Due to this configuration, the amount of heat generated by the bearings and the torque thereof can be reduced by decreasing the amount of oil supplied, and costs can be reduced.
F16C 33/66 - Pièces ou détails particuliers pour la lubrification
F16C 19/16 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges à la fois radiales et axiales avec une seule rangée de billes
An angular ball bearing includes an outer ring having an outer ring raceway surface, an inner ring having an inner ring raceway surface, and a plurality of balls being rollable between the outer ring raceway surface and the inner ring raceway surface at a contact angle, a bearing ring of at least one of the outer ring and the inner ring being a press-formed product of a steel plate. The bearing ring includes an extending portion extending in an axial direction from the raceway surface toward a side opposite to a side on which a line of action of the contact angle relative to a center of the ball passes through the raceway surface. The extending portion has a bent portion bent in a radial direction and the bent portion overlaps the ball when viewed from the axial direction so as to define an overlap allowance.
F16C 19/18 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges à la fois radiales et axiales avec plusieurs rangées de billes
F16C 33/58 - Chemins de roulementBagues de roulement
37.
METHOD FOR MANUFACTURING RING-SHAPED MEMBER, METHOD FOR MANUFACTURING BEARING, METHOD FOR MANUFACTURING MACHINE PART, METHOD FOR MANUFACTURING VEHICLE, METHOD FOR MANUFACTURING MECHANICAL DEVICE, RING-SHAPED MEMBER, BEARING ELEMENT, BEARING, MECHANICAL DEVICE, AND VEHICLE
A method for manufacturing a ring-shaped member includes preparing a workpiece, pressing a first member against the workpiece to form a depression having a depth in an axial direction in the workpiece, punching out a bottom portion of the depression in the workpiece using a second member, and deforming a circumferential wall in accordance with relative movement between the workpiece and a third member.
B21D 53/10 - Fabrication d'autres objets particuliers de parties de roulementsFabrication d'autres objets particuliers de manchonsFabrication d'autres objets particuliers de sièges de soupapes ou pièces similaires
F16C 19/06 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges radiales principalement avec une seule rangée de billes
F16C 33/58 - Chemins de roulementBagues de roulement
38.
CROWN-TYPE RETAINER FOR BALL BEARING, AND BALL BEARING
A crown cage for a ball bearing includes an annular main portion, pillar portions protruding in an axial direction at predetermined intervals in a circumferential direction from the main portion, and a pocket formed between the adjacent pillar portions and having a spherical concave surface capable of holding a ball. The pillar portion includes a pair of claw portions having tip end portions arranged at intervals therebetween and a connection portion connecting the pair of claw portions. An inlet portion having a width shorter than a diameter of the ball and for inserting the ball is provided between the tip end portions of the two adjacent claw portions constituting the pocket. A distance from an outer circumferential surface of the pocket to a center of the crown cage for a ball bearing is larger than a distance from an outer circumferential surface of the pillar portion to the center.
F16C 33/41 - Cages à billes comportant une bague portant des doigts de séparation des éléments de roulement
F16C 19/06 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges radiales principalement avec une seule rangée de billes
A flange integrated with an inner ring is formed at one end of the inner ring in an axial direction, and a flange member separate from the inner ring is fastened to a fastening member extending in the axial direction at the other end of the inner ring in the axial direction, and the flange member includes a base abutting against the inner ring in the axial direction and on which a head of the fastening member is seated, and a caulking portion pressing the head of the fastening member from the other end side in the axial direction.
F16C 19/36 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à rouleaux essentiellement du même gabarit, disposés dans une ou plusieurs rangées circulaires, p. ex. roulements à aiguilles pour charges à la fois axiales et radiales avec une seule rangée de rouleaux
Provided are a ball screw designing method and a ball screw capable of ensuring smooth movement of balls and of accommodating an increase in speed. This ball screw designing method involves, in a case where a straight line exists between two curves having equal radii as the center line of a circulation path, setting the value of L so as to satisfy formulae (1) and (2) where Da represents the ball diameter, L represents the length of the straight line between the two curves, θb represents the ball pitch angle on the curves, θr represents the center angle of the curves, and the angle ratio of the curves is defined as θr/θb, when (A) θr/θb ≈ n+0.25 (n is an arbitrarily-defined integer) is satisfied or (B) θr/θb ≈ n+0.25 is not satisfied. (1): L/Da+θr/θb ≈ n+ 0.5 (n is an integer) (2): L ≈ (n+0.5-(θr/θb))×Da
F16H 25/22 - Mécanismes à vis avec billes, rouleaux ou organes similaires entre pièces travaillant en conjugaisonÉléments essentiels pour l'utilisation de ces organes
According to the present invention, a probe comprises: a substantially columnar probe body that is in contact with a measurement target surface of a bearing and detects the impedance of the bearing; a housing which has therein a sliding hole extending in the axial direction, and in which the probe body disposed in the sliding hole is accommodated so as to be able to slide in the axial direction; an abutting part that is provided at a tip part of the housing and can abut against the measurement target surface of the bearing; and a biasing spring that is disposed in the sliding hole of the housing and biases the probe body in the axial direction with respect to the housing. The abutting part has four protrusions that protrude in the axial direction, and when viewed in the axial direction, the four protrusions are respectively positioned at the vertices of a rectangle centered on the central axis of the probe body.
G01N 27/9093 - Dispositions de support du capteurCombinaisons de capteurs de courants de Foucault et de dispositions auxiliaires pour le marquage ou l’envoi au rebut
42.
INDUCTION HEATING METHOD AND INDUCTION HEATING APPARATUS FOR RING-SHAPED MEMBER, MANUFACTURING METHOD FOR RING-SHAPED MEMBER, MANUFACTURING METHOD FOR BEARING, MANUFACTURING METHOD FOR VEHICLE, AND MANUFACTURING METHOD FOR MECHANICAL DEVICE
An induction heating method includes a step of supplying a ring-shaped member to a predetermined section serving as a heating target section using an induction coil, and a step of moving the ring-shaped member along a reference axis so as to pass through the predetermined section. The moving step includes controlling contact between the ring-shaped member and a different member by a contact control portion.
The objective of the present invention is to provide a signal processing device, a diagnostic system, and a signal processing method capable of improving the accuracy of a determination value used for determining a lubrication state in a rolling device. Provided is a signal processing device (3) for calculating a determination value to be used for determining a lubrication state in a rolling device on the basis of a measurement signal acquired by a sensor (2), the signal processing device (3) comprising: a first processing unit (321) that performs band-limiting and envelope-processing to the measurement signal and converts the measurement signal into a time-domain signal; a second processing unit (322) that converts the time-domain signal into a first frequency-domain signal; a third processing unit (323) that converts a logarithmic spectrum of the first frequency-domain signal into a first quefrency domain signal; a fourth processing unit (324) that generates a second quefrency domain signal in which a higher-order cepstrum domain of the first quefrency domain signal including the rotational frequency of the rolling device is set to a prescribed value; a fifth processing unit (325) that converts the second quefrency domain signal into a second frequency domain signal; and a determination value calculation processing unit (33) that calculates the determination value on the basis of the second frequency domain signal.
G01M 13/045 - Analyse acoustique ou des vibrations
G01H 17/00 - Mesure des vibrations mécaniques ou des ondes ultrasonores, sonores ou infrasonores non prévue dans les autres groupes de la présente sous-classe
44.
CROWN-TYPE RETAINER FOR BALL BEARING, AND BALL BEARING
A crown cage for a ball bearing includes an annular main portion, pillar portions protruding in an axial direction at predetermined intervals in a circumferential direction from the main portion, and a pocket formed between the adjacent pillar portions and having a spherical concave surface having a spherical shape capable of holding a ball. The pillar portion includes a pair of claw portions having tip end portions arranged at intervals therebetween and a connection portion connecting the claw portions. An inlet portion having a width shorter than a diameter of the ball and for inserting the ball is provided between the tip end portions of the two adjacent claw portions configuring the pocket. A distance from an inner circumferential surface of the pocket to a center of the crown cage for a ball bearing is smaller than a radius of an inner circumferential surface of the pillar portion.
F16C 33/41 - Cages à billes comportant une bague portant des doigts de séparation des éléments de roulement
F16C 19/06 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges radiales principalement avec une seule rangée de billes
45.
Motor control device, electric actuator product, and electric power steering device
A motor control device including: a current command value calculation unit configured to calculate a current command value for driving a motor; a current value detection unit configured to detect current flowing through the motor; a current control unit configured to output a first voltage command value according to deviation between a current detected value, the current detected value being a detected value of current detected by the current value detection unit, and the current command value; a voltage disturbance control unit configured to calculate a second voltage command value by adding output from a delay element to the first voltage command value and also input the second voltage command value to the delay element; and a driving circuit configured to drive the motor, based on the second voltage command value.
B62D 5/04 - Direction assistée ou à relais de puissance électrique, p. ex. au moyen d'un servomoteur relié au boîtier de direction ou faisant partie de celui-ci
[Problem] To provide a structure that can switch between enabling and disabling a reverse input shutoff function for preventing torque that is reversely inputted to an output member from being transmitted to an input member. [Solution] A pressed member 2 has a fixed element 7 supported by and fixed to a portion that does not rotate even during use, a movable element 8 supported on the radially inner side of the fixed element 7 so as to be capable of relatively rotating with respect to the fixed element 7, and a coupling member 9 extending between the fixed element 7 and the movable element 8 so as to be capable of engaging with and disengaging from at least one element of the fixed element 7 and the movable element 8.
F16D 41/08 - Roues libres ou embrayages à roue libre avec organes d'accouplement intermédiaires d'arrêt entre une surface intérieure et une surface extérieure avec moyens de modifier le fonctionnement en roue libre
47.
SERVO PRESS MECHANISM, PRESSING METHOD, PRODUCTION METHOD FOR BEARING, PRODUCTION METHOD FOR MECHANICAL DEVICE, AND PRODUCTION METHOD FOR VEHICLE
A servo press mechanism (1) comprises a slide (2), a main press part (3) that has a master shaft (5), and a sub-press part (4) that has slave shafts (6a, 6b). The slide (2) can move in a first direction that is a pressing direction and a second direction that is different from the first direction on the basis of drive by the main press part (3). In a first mode, the slide (2) is driven with assistance from the sub-press part (4). In a second mode, the slide (2) is driven without substantial assistance from the sub-press part (4).
B30B 1/18 - Presses, utilisant un élément pilonnant, caractérisées par le mode d'entraînement du pilon, la pression étant transmise au pilon ou à la platine de presse directement ou uniquement par l'intermédiaire d'organes travaillant en simple poussée ou traction par des systèmes à vis
B30B 15/00 - Parties constitutives des presses ou accessoires de pressesMesures auxiliaires prises en rapport avec le pressage
F16C 19/06 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges radiales principalement avec une seule rangée de billes
F16C 19/36 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à rouleaux essentiellement du même gabarit, disposés dans une ou plusieurs rangées circulaires, p. ex. roulements à aiguilles pour charges à la fois axiales et radiales avec une seule rangée de rouleaux
F16C 33/78 - Dispositifs d'étanchéité pour roulements à billes ou à rouleaux avec diaphragme, disque ou bague, avec ou sans parties élastiques
In the present invention, a housing (30) includes a first axial surface (AX1) oriented in a first direction. A load from a ball screw (20) along a second direction is received by the first axial surface (AX1) via an inner ring (41), a rolling body (43), and an outer ring (42). A bearing (40) includes a restricting member (50) disposed in contact with the outer ring (42). The restricting member (50) includes a third axial surface disposed facing a second axial surface (AX2). When a screw shaft (21) or a nut (22) is rotated with respect to the housing (30), relative movement in a circumferential direction is performed between the second axial surface (AX2) and the third axial surface (AX3). Relative axial movement of the inner ring (41) relative to the outer ring (42) in the first direction is restricted on the basis of an axial positional relationship between the second axial surface (AX2) and the third axial surface (AX3).
F16H 25/22 - Mécanismes à vis avec billes, rouleaux ou organes similaires entre pièces travaillant en conjugaisonÉléments essentiels pour l'utilisation de ces organes
F16C 19/16 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges à la fois radiales et axiales avec une seule rangée de billes
F16C 19/36 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à rouleaux essentiellement du même gabarit, disposés dans une ou plusieurs rangées circulaires, p. ex. roulements à aiguilles pour charges à la fois axiales et radiales avec une seule rangée de rouleaux
F16C 33/58 - Chemins de roulementBagues de roulement
F16C 35/07 - Leur fixation sur l'arbre ou dans la carcasse d'enveloppe avec interposition d'un organe
F16C 35/077 - Leur fixation sur l'arbre ou dans la carcasse d'enveloppe avec interposition d'un organe entre la carcasse d'enveloppe et la bague extérieure de roulement
The present invention comprises a ball screw provided with a threaded shaft and a nut, a pair of intermediate supports positioned so as to be vertically movable around the threaded shaft, a pair of frame bodies respectively attached to the pair of intermediate supports and connected by a connection member, a linear-motion guiding part having a pair of outer cylinders which pass through the shaft and to which the pair of frame bodies are respectively attached, and a pair of buffer devices. The nut has a state in which the nut comes into contact with the intermediate support or the frame body positioned above and moves in the vertical direction together with the pair of intermediate supports and the pair of frame bodies, and a state in which the nut is not in contact with the intermediate support or the frame body positioned above.
F16H 25/22 - Mécanismes à vis avec billes, rouleaux ou organes similaires entre pièces travaillant en conjugaisonÉléments essentiels pour l'utilisation de ces organes
F16H 25/24 - Éléments essentiels pour ces mécanismes, p. ex. vis, écrous
A housing (30) has a first axial surface (AX1) oriented in a first direction and a second axial surface (AX2) oriented in a second direction. A load from a ball screw (20) along the second direction is received by the first axial surface (AX1) via an inner race (41), a rolling body (43), and an outer race (42). A bearing (40) or the ball screw (20) has a third axial surface (AX3) disposed facing the second axial surface (AX2). When a screw shaft (21) or a nut (22) is rotated with respect to the housing (30), relative movement in the circumferential direction occurs between the second axial surface (AX2) and the third axial surface (AX3). Axial relative movement of the inner race (41) with respect to the outer race (42) in the first direction is restricted on the basis of an axial positional relationship between the second axial surface (AX2) and the third axial surface (AX3).
F16H 25/22 - Mécanismes à vis avec billes, rouleaux ou organes similaires entre pièces travaillant en conjugaisonÉléments essentiels pour l'utilisation de ces organes
F16C 19/16 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges à la fois radiales et axiales avec une seule rangée de billes
F16C 19/36 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à rouleaux essentiellement du même gabarit, disposés dans une ou plusieurs rangées circulaires, p. ex. roulements à aiguilles pour charges à la fois axiales et radiales avec une seule rangée de rouleaux
F16C 33/58 - Chemins de roulementBagues de roulement
F16C 35/07 - Leur fixation sur l'arbre ou dans la carcasse d'enveloppe avec interposition d'un organe
A detection method for detecting a state of a bearing device including a tapered roller bearing includes applying an AC voltage to an electric circuit including an outer member, an inner member, and a plurality of rollers in a state in which a predetermined load is applied to the bearing device; measuring an impedance and a phase angle of the electric circuit when the AC voltage is applied; and based on the impedance and the phase angle, deriving an oil film thickness and a metal contact ratio between the inner member and the plurality of rollers or between the inner member and at least one of the plurality of rollers by using a calculation formula corresponding to the electric circuit.
A component (17) of a roller bearing includes: a central section (27) that has a peripheral surface having a linear profile extending at least in the axial direction; and end sections (25) that each have a peripheral surface having a crown profile. A superfinishing method involves: using first grinding wheels (31) to subject the end sections (25) to superfinishing while rotating the component (17); and using a second grinding wheel (33), which was prepared separately from the first grinding wheels (31), to subject the central section (27) to superfinishing while rotating the component (17).
B24B 35/00 - Machines ou dispositifs pour le superfinissage des surfaces, c.-à-d. pour le travail au moyen de blocs abrasifs animés d'un mouvement de va-et-vient à haute fréquence
In this linear motion guide, a raceway surface has: an end-side raceway surface intersecting a longitudinal-direction end surface of a slider body; and an inner raceway surface disposed on the opposite side of the end-side raceway surface to the longitudinal-direction end surface. The end-side raceway surface has a rotationally symmetrical shape with respect to an end-side raceway surface central axis that coincides or is parallel with a linear-portion center line of a rolling passage, and has: a partially conical raceway surface connected to the inner raceway surface; and a curved raceway surface connecting the partially conical raceway surface and the longitudinal-direction end surface. In a cross section including the end-side raceway surface central axis, the surface of the partially conical raceway surface has a linear shape and the surface of the curved raceway surface has an arc shape. In the cross-section, the tangent of the partially conical raceway surface and the tangent of the curved raceway surface are the same at the boundary between the partially conical raceway surface and the curved raceway surface.
A friction clutch device 7 comprises: a retaining ring 32 externally fitted to a second member 102; a pressing plate 36 that faces a lateral surface on one axial side of a friction plate which is either a first friction plate 45 or a second friction plate 46 located furthest on said one axial side, and is externally fitted to the second member 102 in a manner capable of moving axially toward or away from the friction plate located furthest on said one axial side; an elastic member 37 that is sandwiched between the retaining ring 32 and the pressing plate 36 and that elastically biases the pressing plate 36 toward the other axial side; and a spacer 33 and a fastening ring 34 that are locked to a locking groove 15 of the second member 102 and that prevent the retaining ring 32 from being displaced toward said one axial side.
The present invention implements a method with which it is possible to prevent generation of an internal defect in a build-up layer having a raceway surface on a surface. The method comprises a build-up step of radiating a laser 10 emitted from a laser light source to a raceway surface 4a (or a portion where a raceway surface of a base material is formed) provided on an inner circumferential surface or an outer circumferential surface of a bearing ring 3a, and relatively rotating the laser light source with respect to the raceway ring 3a and relatively displacing the laser light source in a width direction of the raceway surface 4a (or a portion where the raceway surface is formed) while supplying welding material 11 to a portion of the raceway surface 4a irradiated with the laser 10, thereby forming a build-up portion 15 composed of a plurality of annular beads or beads wound without a gap on the raceway surface 4a. In the build-up step, the radiation direction of the laser 10 with respect to the raceway surface 4a is a direction inclined, with respect to a normal direction of the raceway surface 4, forward in relation to a relative displacement direction in an axial direction of the laser light source with respect to the raceway ring 3a.
F16C 19/22 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à rouleaux essentiellement du même gabarit, disposés dans une ou plusieurs rangées circulaires, p. ex. roulements à aiguilles
Provided is a seal structure capable of reducing seal torque. A seal structure 3 comprises: at least one seal lip 23; at least one lip sliding-contact surface 24; and grease 25. The at least one seal lip 23 and the at least one lip sliding-contact surface 24 slide by means of an oil film of the grease 25. The at least one lip sliding-contact surface 24 has a plurality of recesses 35. With respect to the plurality of recesses 35, the average value of the difference in height between the bottom sections and the opening edge sections is 1-10 μm inclusive, and the percentage of the total opening area of the plurality of recesses 35 to a certain area of the at least one lip sliding-contact surface 24 is 30% or more but less than 100%.
F16C 33/78 - Dispositifs d'étanchéité pour roulements à billes ou à rouleaux avec diaphragme, disque ou bague, avec ou sans parties élastiques
F16C 19/18 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges à la fois radiales et axiales avec plusieurs rangées de billes
F16C 33/66 - Pièces ou détails particuliers pour la lubrification
F16J 15/3232 - Joints d'étanchéité entre deux surfaces mobiles l'une par rapport à l'autre par joints élastiques, p. ex. joints toriques avec au moins une lèvre ayant plusieurs lèvres
Disclosed is a quenching method for a quenching object including a race provided with an object through hole. The quenching method includes a step of preparing a quenching tool which is a rod body, a step of suspending a plurality of the quenching objects on the rod body by inserting the quenching tool into the object through hole, and a step of immersing the quenching tool and the quenching objects in a cooling oil. In the step of suspending, each of the quenching objects is disposed on the rod body such that a contact state between the quenching tool and the object through hole is line contact.
C21D 9/40 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour anneauxTraitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour roulements de paliers
C21D 1/18 - DurcissementTrempe avec ou sans revenu ultérieur
C21D 1/63 - Dispositifs pour trempe pour bains de trempe
C21D 11/00 - Commande ou régulation du processus lors de traitements thermiques
12 - Véhicules; appareils de locomotion par terre, par air ou par eau; parties de véhicules
Produits et services
Machine elements (not for land vehicles); bearings, for use as machine elements other than for land vehicles; ball screws (machine elements not for land vehicles); linear motion bearings (machine elements not for land vehicles). Machine elements for land vehicles; wheel bearings for land vehicles; wheel bearings integral with wheel hub for land vehicles; bearings for clutch for land vehicles; ball screws for land vehicles.
A resin cage includes at least one circular ring portion and a plurality of column portions extending in an axial direction from the circular ring portion. Balls are rotatably held by cylindrical or partially cylindrical pockets formed between adjacent column portions. The circular ring portion has a guide surface guided by an inner circumferential surface of an outer ring or an outer circumferential surface of an inner ring. A roundness of the guide surface is 5 μm or less, differences between angles formed by centers of adjacent pockets P and 360°/number of pockets are all within ±0.1°, and orientations of centers C of all the pockets P are oriented to one side in a circumferential direction and one side in the axial direction from an outer diameter side toward an inner diameter side.
A connection device electrically connects a hollow rotary shaft and a conductive member. The connection device includes a first conductive portion attached to an end of the rotary shaft, and a second conductive portion inserted into a recess of the first conductive portion to electrically connect the first conductive portion and the conductive member. The first conductive portion includes a first abutting portion that abuts on the second conductive portion. The second conductive portion includes a second abutting portion that abuts on the first abutting portion. At least one of the first abutting portion and the second abutting portion has a protrusion shape. The first abutting portion and the second abutting portion abut on each other on a rotation axis of the rotary shaft.
This brush unit is brought into contact with a shaft conductive part provided on a rotating shaft to electrically connect a housing and the shaft conductive part. The brush unit is provided with: a holder; a brush that is brought into contact with the shaft conductive part via a first opening provided in the holder; a spring; a cylindrical sleeve that holds the brush; an electrode; and wiring that connects the brush and the electrode. The electrode is sandwiched between a second protruding part of the holder and the sleeve.
F16C 19/02 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires
H01R 39/00 - Collecteurs de courant rotatifs, distributeurs ou interrupteurs
H02K 5/173 - Moyens de support des paliers, p. ex. supports isolants ou moyens pour ajuster les paliers dans leurs flasques utilisant des roulements à rouleaux, p. ex. des roulements à billes
62.
BEARING DAMAGE DETECTION SYSTEM AND BEARING DAMAGE DETECTION METHOD
This bearing damage detection system comprises: a rotation sensor that detects rotation of a rolling bearing and outputs a rotation signal; a rotation fluctuation extraction unit that extracts rotation fluctuations of the rolling bearing from the rotation signal and generates a rotation fluctuation signal; a frequency analysis unit that performs frequency analysis on the waveform of the rotation fluctuation signal to find a frequency characteristic; a peak intensity calculation unit that finds a peak intensity corresponding to bearing damage from the frequency characteristic; and a damage detection unit that detects bearing damage of the rolling bearing on the basis of the peak intensity. The rotation fluctuation extraction unit finds the waveform of the rotation fluctuation signal from which various types of noise have been removed.
F16C 19/18 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges à la fois radiales et axiales avec plusieurs rangées de billes
F16C 19/52 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec dispositifs affectés par des conditions anormales ou indésirables
G01M 13/045 - Analyse acoustique ou des vibrations
A reverse-input blocking clutch includes a housing, an input shaft, an output shaft, a pair of engaging elements, a first bearing mechanism provided between the input shaft and the housing, and a second bearing mechanism provided between the output shaft and the housing. At least one of the input shaft, the output shaft, and the housing has a raceway surface which contacts at least one rolling element of the first bearing mechanism and the second bearing mechanism.
F16D 41/08 - Roues libres ou embrayages à roue libre avec organes d'accouplement intermédiaires d'arrêt entre une surface intérieure et une surface extérieure avec moyens de modifier le fonctionnement en roue libre
64.
INDUCTION HEATING METHOD AND MANUFACTURING METHOD FOR RING-SHAPED MEMBER, RING-SHAPED MEMBER, BEARING, INDUCTION HEATING APPARATUS, MANUFACTURING METHOD FOR BEARING, MANUFACTURING METHOD FOR VEHICLE, AND MANUFACTURING METHOD FOR MECHANICAL DEVICE
A ring-shaped member is induction-heated by supplying a current to an induction coil. An induction heating step includes induction-heating the ring-shaped member using an induction coil disposed at a radially inward position of the ring-shaped member in a state in which no substantial coil is disposed at a radially outward position of the ring-shaped member, or induction-heating the ring-shaped member using an induction coil disposed at the radially outward position of the ring-shaped member in a state in which no substantial coil is disposed at the radially inward position of the ring-shaped member. Effective lengths of the induction coils are set to be larger than an axial length of the ring-shaped member.
The present invention provides a linear motion guide device in which, provided that a vertical center plane CP is defined to be a plane passing through the widthwise center of a slider body and a longitudinal axis line of a guide rail, a horizontal reference plane HP is defined to be a plane orthogonal to the vertical center plane CP and passing through a straight-portion centerline of a rolling path, and a vertical reference plane VP is defined to be a plane parallel to the vertical center plane CP and intersecting a chamfered portion, the surface of the chamfered portion lies on a locus of revolution centered on a point O2 shifted along the horizontal reference plane HP so as to be farther away from a first orbital plane than the groove-bottom center O1 of the first orbital plane in a cross section perpendicular to the straight-portion centerline, and the locus of revolution has a minimum radius that is greater than a groove-bottom radius r of the first orbital plane.
In this linear motion guide device, when a plane passing through the width-direction center of a slider body and the longitudinal axis of a guide rail is defined as a vertical center plane CP, a plane orthogonal to the vertical center plane CP and passing through the linear part center line of a rolling path is defined as a horizontal reference plane HP, and a plane parallel to the vertical center plane CP and crossing a second inclined surface and a third inclined surface is defined as a vertical reference plane VP, a point P2 on a first inclined surface farthest from the vertical reference plane VP is separated from the vertical reference plane VP farther than a point P1 on a first raceway surface farthest from the vertical reference plane VP, and a point P4 on the second inclined surface and the third inclined surface farthest from the horizontal reference plane HP is separated from the horizontal reference plane HP farther than a point P3 on the first raceway surface farthest from the horizontal reference plane HP.
Provided is a diagnosis device for diagnosing a rolling device in which a lubricant is used, the diagnosis device including: an acquisition means for acquiring, by using an electric impedance method, the impedance and the phase of the rolling device in a stopped state after the rolling device starts rotating and prescribed rotation is performed; a derivation means for deriving, from the impedance and the phase, the thickness of a film originating from the lubricant in the rolling device; and a determination means for determining the lubrication state of the rolling device on the basis of the thickness of the film.
F16H 25/22 - Mécanismes à vis avec billes, rouleaux ou organes similaires entre pièces travaillant en conjugaisonÉléments essentiels pour l'utilisation de ces organes
F16H 25/24 - Éléments essentiels pour ces mécanismes, p. ex. vis, écrous
F16N 29/00 - Dispositifs particuliers dans les installations ou les systèmes de lubrification indiquant ou détectant des conditions indésirablesUtilisation des dispositifs sensibles à ces conditions dans les installations ou les systèmes de lubrification
F16N 29/02 - Dispositifs particuliers dans les installations ou les systèmes de lubrification indiquant ou détectant des conditions indésirablesUtilisation des dispositifs sensibles à ces conditions dans les installations ou les systèmes de lubrification agissant sur l'alimentation en lubrifiant
68.
BEARING DEVICE STATE DETECTING METHOD, DETECTING DEVICE, AND PROGRAM
A detection method for detecting a state of a bearing device including a slide bearing includes: applying an AC voltage to an electric circuit including the slide bearing and a rotation shaft; measuring an impedance and a phase angle of the electric circuit when the AC voltage is applied; and deriving an oil film thickness and a metal contact ratio between the slide bearing and the rotation shaft based on the impedance and the phase angle, in which the oil film thickness and the metal contact ratio are derived by using a calculation formula corresponding to an electric circuit constructed by a line contact generated between the slide bearing and the rotation shaft.
This state diagnosis system includes: an acquisition means for acquiring an image including a diagnosis target; a specification means for specifying a damaged portion and type of damage of the diagnosis target in the image acquired by the acquisition means by using a trained model that receives input of an image to output a damaged portion and type of damage of a diagnosis target included in the image; and an output means for outputting the image acquired by the acquisition means and the damaged portion and type of damage specified by the specification means in association with each other.
A quenching tool is used for quenching a quenching object which includes a disc-shaped race having a race through hole. The quenching tool includes a support mesh having a first support portion configured to be in contact with the quenching object, and support wires which are a plurality of second support members each having a second support portion configured to be in contact with the quenching object. A position of the second support portion is offset in a normal direction with respect to the first support portion. Further, the position of the second support portion is also offset in a direction of an axis contained in an in-plane direction orthogonal to the normal with respect to the first support portion.
A quenching-attitude-setting program causes a computer to execute setting of the quenching attitude of an object to be quenched. The quenching-attitude-setting program causes the computer to execute a first process of dividing a virtual model obtained by modeling the object to be quenched into a plurality of elements based on a world coordinate system including a vertical direction as an axis, and a second process of evaluating whether a vapor film generated when the virtual model is immersed in cooling oil remains for each of the plurality of elements. In the quenching-attitude-setting program, the first process and the second process are repeated while changing an attitude of the virtual model with respect to the world coordinate system until the number of elements evaluated as having the vapor film remaining satisfies a preset condition.
A ball screw (10) comprises: a screw shaft formed with a screw shaft-side raceway groove (21); a nut (30) provided with a through-hole (32) formed with a circular cross-sectional shape to provide communication between an outer peripheral surface (33) and a nut-side raceway groove (31); a plurality of balls (26) that roll on a ball rolling path (25); and a circulation component (40) that forms a ball circulation path (45). The circulation component (40) has a cylindrical nut insertion part (42) that is fitted into the through-hole (32), and, at a tip of the nut insertion part (42), has a semi-cylindrical part (46) provided such that a rolling surface of the ball circulation path (45) is continuous with a rolling surface of the nut-side raceway groove (31), and a tongue part (47) provided so as to enter the screw shaft-side raceway groove (21). A center line (C1) of the nut insertion part (42) is closer to an axis (O) of the nut (30) relative to a ball center trajectory (L) of the ball (26) scooped up in a tangential direction from the screw shaft-side raceway groove (21).
F16H 25/22 - Mécanismes à vis avec billes, rouleaux ou organes similaires entre pièces travaillant en conjugaisonÉléments essentiels pour l'utilisation de ces organes
This clutch hub comprises: a cylindrical part that has a first engagement part which is disposed on one side portion of an outer peripheral surface in an axial direction and to which a component constituting a friction clutch device is engaged, a second engagement part which is disposed on the other side portion of the outer peripheral surface in the axial direction and to which a component constituting a device differing from the friction clutch device is engaged, and oil holes which penetrate in a radial direction a plurality of sites in the same axial direction range as the first engagement part; and a side plate part that extends inwardly in the radial direction from an end part on the one side of the cylindrical part in the axial direction, wherein the cylindrical part has a damming surface that faces the one side in the axial direction at an axially intermediate part positioned on an inner peripheral surface and on the other side in the axial direction from the oil holes, and the inner diameter of the damming surface is equal to or less than the inner diameter of the portion, of the inner peripheral surface that is adjacent thereto at the one side in the axial direction from the damming surface, that has the smallest inner diameter.
F16H 3/48 - Transmissions ayant uniquement deux engrenages centraux reliés par des engrenages à mouvement orbital avec engrenages orbitaux uniques ou paires d'engrenages orbitaux rigidement liés
[Problem] To realize, in an electric vehicle drive device capable of switching a speed reduction ratio to two stages of high and low levels, a structure capable of preventing a sense of incongruity from being given to an occupant when switching from a low speed reduction ratio mode to a high speed reduction ratio mode during regenerative traveling in which regenerative torque acts on a drive motor. [Solution] In order to switch a two-stage transmission 3 from a low speed reduction ratio mode to a high speed reduction ratio mode by a speed reduction ratio switching function in a state where torque is transmitted from an output member 9 to an input member 8, a coordinating control function is provided, the coordinating control function executing a pre-shift process for: rotationally driving a drive cam 38 by an electric actuator 32; reducing a force that presses a first friction plate 33 and a second friction plate 34 against each other, and increasing the braking force by a friction brake device 5 while reducing regenerative torque of a drive motor 2.
F16H 3/54 - Transmissions ayant uniquement deux engrenages centraux reliés par des engrenages à mouvement orbital avec engrenages orbitaux uniques ou paires d'engrenages orbitaux rigidement liés comprenant des engrenages orbitaux droits un des engrenages centraux étant denté intérieurement et l'autre denté extérieurement
B60W 10/04 - Commande conjuguée de sous-ensembles de véhicule, de fonction ou de type différents comprenant la commande des ensembles de propulsion
B60W 10/08 - Commande conjuguée de sous-ensembles de véhicule, de fonction ou de type différents comprenant la commande des ensembles de propulsion comprenant la commande des unités de traction électrique, p. ex. des moteurs ou des générateurs
This electric vehicle drive device is capable of switching the reduction ratio between two stages of high and low, wherein a structure is realized in which a rotary transmission state switching device can smoothly switch modes even during regenerative travel in which regenerative torque acts on a drive motor. A control device of the electric vehicle drive device is provided with a cooperative control function for executing, in association with the mode switching of a two-stage transmission (3) by a reduction ratio switching function, a pre-shift step for increasing the braking force from a friction brake device (5) while reducing the regenerative torque of a drive motor (2) before one engagement claw (94 (or 97)), between a first engagement claw (94) and a second engagement claw (97), that extends from a base (93 (or 96)) pivotally supported by a second member (75) toward the other side in the circumferential direction is pressed in the radial direction or the axial direction by a protrusion (100) so as to retreat from an engagement recess (77).
F16H 3/54 - Transmissions ayant uniquement deux engrenages centraux reliés par des engrenages à mouvement orbital avec engrenages orbitaux uniques ou paires d'engrenages orbitaux rigidement liés comprenant des engrenages orbitaux droits un des engrenages centraux étant denté intérieurement et l'autre denté extérieurement
B60L 7/24 - Systèmes de freins électrodynamiques pour véhicules, en général avec freinage additionnel mécanique ou électromagnétique
B60W 10/02 - Commande conjuguée de sous-ensembles de véhicule, de fonction ou de type différents comprenant la commande d'accouplements de la chaîne cinématique
B60W 10/18 - Commande conjuguée de sous-ensembles de véhicule, de fonction ou de type différents comprenant la commande des systèmes de freinage
[Problem] To provide a nut for a ball screw device, which can improve slidability of the outer circumferential surface and ensure fatigue strength of a nut side ball screw groove. [Solution] A nut 3 comprises: an outer circumferential surface 10 having a sliding surface 21; and an inner circumferential surface 11 having a part provided with a nut-side ball screw groove 12. At least the sliding surface 21 of the outer circumferential surface 10 is composed of a compound layer 17, and at least the part of the inner circumferential surface 11 provided with the nut-side ball screw groove 12 is composed of a diffusion layer 16.
F16H 25/24 - Éléments essentiels pour ces mécanismes, p. ex. vis, écrous
F16H 25/22 - Mécanismes à vis avec billes, rouleaux ou organes similaires entre pièces travaillant en conjugaisonÉléments essentiels pour l'utilisation de ces organes
77.
Power source device and electric power steering device
A power source device including: a DC power source; an inverter to which power is supplied from the DC power source; a capacitor connected between the DC power source and the inverter in parallel with the inverter; a reverse connection protection circuit connected between the DC power source and the capacitor and configured to block current flowing through a positive electrode-side power source line of the DC power source from the capacitor to the DC power source; and an overvoltage protection circuit configured to control both-end voltage across the capacitor to a voltage less than or equal to a predetermined voltage when the both-end voltage becomes greater than or equal to the predetermined voltage.
H02P 29/024 - Détection d’un défaut, p. ex. court circuit, rotor bloqué, circuit ouvert ou perte de charge
B62D 5/04 - Direction assistée ou à relais de puissance électrique, p. ex. au moyen d'un servomoteur relié au boîtier de direction ou faisant partie de celui-ci
78.
DEVICE AND METHOD FOR PROCESSING RING-SHAPED MEMBER, METHOD FOR MANUFACTURING BEARING, METHOD FOR MANUFACTURING MACHINE DEVICE, AND METHOD FOR MANUFACTURING VEHICLE
The present invention comprises a rotation drive mechanism (2) that rotates a metal ring-shaped member (5) in the circumferential direction around a reference axis, a grinding mechanism (40) that has a grindstone (3) pressed against the outer peripheral surface of the ring-shaped member (5), and a support mechanism (4) that supports the ring-shaped member (5). The support mechanism (4) has a support part (42) that is in contact with the inner peripheral surface of the ring-shaped member (5) in at least one circumferential range around the reference axis.
B24B 41/06 - Supports de pièces, p. ex. lunettes réglables
F16C 19/04 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges radiales principalement
This sun gear unit of a planetary gear mechanism includes: a sun gear shaft having a first end part for inputting and outputting rotational force and a second end part on the opposite side to the first end part, and having an axial raceway surface formed on the outer peripheral surface; a sun gear provided at the second end part and engaged with a planetary gear of the planetary gear mechanism; an outer ring attached to a support part for supporting the sun gear shaft, provided so as to surround the axial raceway surface, and having an outer ring raceway surface formed on the inner peripheral surface; and a plurality of rolling elements arranged between the axial raceway surface and the outer ring raceway surface.
F16H 1/28 - Transmissions à engrenages pour transmettre un mouvement rotatif avec engrenages à mouvement orbital
F16C 19/10 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges axiales principalement
F16C 19/16 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges à la fois radiales et axiales avec une seule rangée de billes
F16C 33/58 - Chemins de roulementBagues de roulement
F16C 35/077 - Leur fixation sur l'arbre ou dans la carcasse d'enveloppe avec interposition d'un organe entre la carcasse d'enveloppe et la bague extérieure de roulement
F16C 43/06 - Mise en place des organes roulant dans les cages de roulement ou dans les paliers
80.
HYDRAULIC PRESSURE GENERATION DEVICE AND HYDRAULIC PRESSURE OPERATION DEVICE
This hydraulic pressure generation device comprises: a hollow housing provided with a cylinder chamber into which hydraulic oil can be injected; a screw shaft in which a male screw groove is formed; a nut which is supported in the housing so as to be movable in the axial direction and in which a female screw groove is formed; a plurality of balls accommodated in a rolling path which is formed by the male screw groove and the female screw groove that oppose one another; and a piston which is slidably disposed in the cylinder chamber and connected to the nut. By rotating the screw shaft, the piston moves in the axial direction together with the nut to increase or decrease the volume of the space in which the hydraulic oil can be stored in the cylinder chamber.
F04B 9/02 - "Machines" ou pompes à piston caractérisées par les moyens entraînants ou entraînés liés à leurs organes de travail les moyens étant mécaniques
F16H 25/24 - Éléments essentiels pour ces mécanismes, p. ex. vis, écrous
A machine component 40 includes: a housing 41; a bearing 42 which is disposed within the housing 41 and rotatably supports a shaft member 31; a temperature sensor 43b which is disposed on the outer surface of the housing 41 and detects the temperature of the bearing 42; and a connection member 44 which has a thermal conductivity higher than that of the housing 41 and thermally connects the bearing 42 and the temperature sensor 43b.
F16C 19/52 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec dispositifs affectés par des conditions anormales ou indésirables
F16C 19/16 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges à la fois radiales et axiales avec une seule rangée de billes
G01K 1/14 - SupportsDispositifs de fixationDispositions pour le montage de thermomètres en des endroits particuliers
G01K 1/024 - Moyens d’indication ou d’enregistrement spécialement adaptés aux thermomètres pour l’indication à distance
G06K 19/07 - Supports d'enregistrement avec des marques conductrices, des circuits imprimés ou des éléments de circuit à semi-conducteurs, p. ex. cartes d'identité ou cartes de crédit avec des puces à circuit intégré
82.
MONITORING SYSTEM AND MAINTENANCE MANAGEMENT SYSTEM
The present invention appropriately monitors an object to be monitored. Provided is a monitoring system including a wireless tag provided to an object to be monitored, and a movable data acquisition device that acquires data from the wireless tag, wherein: the wireless tag includes a storage unit that stores identification information, and a communication unit that transmits the identification information; and the data acquisition device moves in the vicinity of the wireless tag and, when moving in the vicinity of the wireless tag, stores the identification information acquired from the wireless tag.
G01M 99/00 - Matière non prévue dans les autres groupes de la présente sous-classe
B65G 43/02 - Dispositifs de commande, p. ex. de sécurité, d'alarme ou de correction des erreurs détectant une condition physique dangereuse des porte-charges, p. ex. pour stopper l'entraînement en cas d'échauffement
G01K 1/02 - Moyens d’indication ou d’enregistrement spécialement adaptés aux thermomètres
G01N 25/20 - Recherche ou analyse des matériaux par l'utilisation de moyens thermiques en recherchant la production de quantités de chaleur, c.-à-d. la calorimétrie, p. ex. en mesurant la chaleur spécifique, en mesurant la conductivité thermique
G06K 7/10 - Méthodes ou dispositions pour la lecture de supports d'enregistrement par radiation électromagnétique, p. ex. lecture optiqueMéthodes ou dispositions pour la lecture de supports d'enregistrement par radiation corpusculaire
G06K 17/00 - Méthodes ou dispositions pour faire travailler en coopération des équipements couverts par plusieurs des groupes principaux , p. ex. fichiers automatiques de cartes incluant les opérations de transport et de lecture
G06K 19/07 - Supports d'enregistrement avec des marques conductrices, des circuits imprimés ou des éléments de circuit à semi-conducteurs, p. ex. cartes d'identité ou cartes de crédit avec des puces à circuit intégré
G08B 25/10 - Systèmes d'alarme dans lesquels l'emplacement du lieu où existe la condition déclenchant l'alarme est signalé à une station centrale, p. ex. systèmes télégraphiques d'incendie ou de police caractérisés par le moyen de transmission utilisant des systèmes de transmission sans fil
83.
MONITORING SYSTEM AND MAINTENANCE MANAGEMENT SYSTEM
The present invention appropriately monitors an object-to-be monitored. This monitoring system comprises a wireless tag provided to an object-to-be-monitored, and a data acquisition device that acquires data from the wireless tag. The wireless tag includes: a storage unit that stores identification information; and a physical quantity sensor that detects a physical quantity of the object-to-be-monitored and outputs physical quantity data corresponding to the physical quantity, wherein the object-to-be-monitored is monitored on the basis of the physical quantity data and the identification information acquired by the data acquisition device.
G01M 99/00 - Matière non prévue dans les autres groupes de la présente sous-classe
B65G 43/02 - Dispositifs de commande, p. ex. de sécurité, d'alarme ou de correction des erreurs détectant une condition physique dangereuse des porte-charges, p. ex. pour stopper l'entraînement en cas d'échauffement
G01K 1/02 - Moyens d’indication ou d’enregistrement spécialement adaptés aux thermomètres
G06K 7/10 - Méthodes ou dispositions pour la lecture de supports d'enregistrement par radiation électromagnétique, p. ex. lecture optiqueMéthodes ou dispositions pour la lecture de supports d'enregistrement par radiation corpusculaire
G06K 17/00 - Méthodes ou dispositions pour faire travailler en coopération des équipements couverts par plusieurs des groupes principaux , p. ex. fichiers automatiques de cartes incluant les opérations de transport et de lecture
G06K 19/07 - Supports d'enregistrement avec des marques conductrices, des circuits imprimés ou des éléments de circuit à semi-conducteurs, p. ex. cartes d'identité ou cartes de crédit avec des puces à circuit intégré
G08B 25/10 - Systèmes d'alarme dans lesquels l'emplacement du lieu où existe la condition déclenchant l'alarme est signalé à une station centrale, p. ex. systèmes télégraphiques d'incendie ou de police caractérisés par le moyen de transmission utilisant des systèmes de transmission sans fil
Provided are a retainer cage and a bearing device capable of suppressing fluctuation of torque. A bearing device of the present disclosure includes: an inner ring having an outer circumferential track surface on an outer circumferential surface; an outer ring having an inner circumferential track surface on an inner circumferential surface; a plurality of balls disposed between the outer circumferential track surface and the inner circumferential track surface; and a retainer cage.
A mechanical device 20 includes a shaft member 31, a bearing 42 that rotatably supports the shaft member 31, and an RFID tag 33a that has a temperature sensor 33b for detecting a temperature of the shaft member 31 and that transmits the temperature detected by the temperature sensor 33b to a reader/writer 3.
F16H 25/22 - Mécanismes à vis avec billes, rouleaux ou organes similaires entre pièces travaillant en conjugaisonÉléments essentiels pour l'utilisation de ces organes
B23Q 5/22 - Avance des éléments supportant les outils ou les pièces à usiner
B23Q 5/40 - Avance par transmission mécanique des autres organes supportant les outils ou les pièces, p. ex. avance des traînards, des glissières d'outils à avance continue par un arbre, p. ex. une vis-mère
B23Q 11/14 - Procédés ou dispositions pour maintenir des parties de machines-outils ou les outils à une température constante
B23Q 17/22 - Agencements sur les machines-outils pour indiquer ou mesurer pour indiquer ou mesurer la position réelle ou désirée de l'outil ou de la pièce
F16C 19/06 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges radiales principalement avec une seule rangée de billes
F16C 19/52 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec dispositifs affectés par des conditions anormales ou indésirables
F16C 29/06 - Roulements à billes ou à rouleaux dans lesquels les billes ou rouleaux ne supportent la charge que sur une partie du chemin de roulement
A machine component 40 includes: a housing 41; a bearing 42 that is disposed in the housing 41 and rotatably supports the shaft member 31 with respect to the housing 41; and a temperature sensor 43b that is disposed on the outer surface of the housing 41 and detects the temperature of the housing 41. When the housing 41 is viewed along the axial direction of the bearing 42, the temperature sensor 43b overlaps a portion where the stress generated by the force acting from the bearing 42 in the housing 41 becomes maximum.
F16C 35/067 - Leur fixation dans la carcasse d'enveloppe
F16C 19/52 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec dispositifs affectés par des conditions anormales ou indésirables
G01K 1/14 - SupportsDispositifs de fixationDispositions pour le montage de thermomètres en des endroits particuliers
G01K 1/024 - Moyens d’indication ou d’enregistrement spécialement adaptés aux thermomètres pour l’indication à distance
G06K 19/07 - Supports d'enregistrement avec des marques conductrices, des circuits imprimés ou des éléments de circuit à semi-conducteurs, p. ex. cartes d'identité ou cartes de crédit avec des puces à circuit intégré
This machine component 40 comprises: a housing 41; a bearing 42 that is disposed in the housing 41 and rotatably supports a shaft member 31; a temperature sensor 43b that is disposed on an outer surface of the housing 41 and detects the temperature of the bearing 42; and a connection member 44 that has a thermal conductivity higher than the thermal conductivity of the housing 41, is disposed in the housing 41, and thermally connects the bearing 42 and the temperature sensor 43b.
F16C 19/52 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec dispositifs affectés par des conditions anormales ou indésirables
F16C 19/16 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges à la fois radiales et axiales avec une seule rangée de billes
G01K 1/14 - SupportsDispositifs de fixationDispositions pour le montage de thermomètres en des endroits particuliers
G01K 1/024 - Moyens d’indication ou d’enregistrement spécialement adaptés aux thermomètres pour l’indication à distance
G06K 19/07 - Supports d'enregistrement avec des marques conductrices, des circuits imprimés ou des éléments de circuit à semi-conducteurs, p. ex. cartes d'identité ou cartes de crédit avec des puces à circuit intégré
An information acquisition system capable of efficiently reading data from a wireless tag is provided. The present invention is an information acquisition system in which a data acquisition device moves near a plurality of wireless tags, and the data acquisition device acquires information from the wireless tags. The information acquisition system includes: a storage unit that stores position data about objects to which the plurality of wireless tags are attached, respectively; an identification unit that identifies a communication range of each of the plurality of wireless tags on the basis of the position data about the wireless tags stored in the storage unit; a creation unit that creates, on the basis of the communication range of each of the wireless tags identified by the identification unit, a route along which the data acquisition device should move; and a drive unit that drives an actuator for moving the data acquisition device along the route created by the creation unit.
G06K 7/015 - Alignement ou centrage du dispositif de lecture par rapport au support d'enregistrement
G06K 7/10 - Méthodes ou dispositions pour la lecture de supports d'enregistrement par radiation électromagnétique, p. ex. lecture optiqueMéthodes ou dispositions pour la lecture de supports d'enregistrement par radiation corpusculaire
G06K 19/07 - Supports d'enregistrement avec des marques conductrices, des circuits imprimés ou des éléments de circuit à semi-conducteurs, p. ex. cartes d'identité ou cartes de crédit avec des puces à circuit intégré
H04B 5/70 - Systèmes de transmission en champ proche, p. ex. systèmes à transmission capacitive ou inductive spécialement adaptés à des fins spécifiques
89.
RESIN RETAINER FOR ROLLING BEARING AND ROLLING BEARING
Provided is a resin retainer that undergoes little dimensional change and does not hinder rolling element assembly work. In a resin retainer (1) for a rolling bearing, the ratio of dimensional change is less than 0.16%, and polyacetal (POM) is a preferable form of the resin. A rolling bearing is provided with said resin retainer (1) for a rolling bearing, and is suitable for use as a speed reduction mechanism used in a joint portion of a robotic arm.
F16C 19/36 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à rouleaux essentiellement du même gabarit, disposés dans une ou plusieurs rangées circulaires, p. ex. roulements à aiguilles pour charges à la fois axiales et radiales avec une seule rangée de rouleaux
Provided is a resin gear capable of suppressing the occurrence of damage on a tooth surface, thereby improving durability and prolonging a service life. The resin gear has a tooth part made of a resin material. Fatigue crack development speed da/dN of the resin material is measured in accordance with ASTM E647, and in a case where a crack development speed is represented by a double logarithmic graph given that the vertical axis is a crack development speed and the horizontal axis is a value (ΔK/E) obtained by dividing a stress expansion coefficient range ΔK by a Young's modulus E of the resin material, a fatigue crack development speed da/dN (mm/cycle) calculated by the relational expression in a range of ΔK/E<7×10-4[√m] is equal to or less than a value A calculated using formula (3). In formula (3), ΔK is a value obtained using the formula described in ASTM E647.
F16H 55/06 - Emploi de matériauxEmploi de traitements d'organes dentés ou de vis sans fin pour modifier les propriétés intrinsèques des matériaux
B62D 5/04 - Direction assistée ou à relais de puissance électrique, p. ex. au moyen d'un servomoteur relié au boîtier de direction ou faisant partie de celui-ci
F16H 55/22 - Organes dentésVis sans fin pour transmissions à arbres se croisant, en particulier vis sans fin, engrenages à vis sans fin
A ball screw device of the present disclosure includes: a screw shaft in which an outer peripheral raceway surface is provided on an outer peripheral surface; a nut into which the screw shaft is inserted and in which an inner peripheral raceway surface is provided on an inner peripheral surface; a plurality of balls arranged on a raceway between the outer peripheral raceway surface and the inner peripheral raceway surface; and at least one deflector provided with an S-shaped groove surface that circulates the balls. The outer peripheral surface of the screw shaft is provided with a recess portion that is recessed to an inner side in a radial direction and that houses the deflector, and an inner peripheral surface of the recess portion and an outer peripheral surface of the deflector are not circular when viewed from an outer side in the radial direction of the screw shaft.
F16H 25/22 - Mécanismes à vis avec billes, rouleaux ou organes similaires entre pièces travaillant en conjugaisonÉléments essentiels pour l'utilisation de ces organes
F16H 25/24 - Éléments essentiels pour ces mécanismes, p. ex. vis, écrous
In a reverse input cutoff clutch (1), two contact parts (PI1 and PI2) of a first group are respectively disposed closer to a first reference line (RL1) than two of a fifth contact part (PO1), a sixth contact part (PO2), a seventh contact part (PO3), and an eighth contact part (PO4), and two contact parts (PI3 and PI4) of a second group are respectively disposed farther from the first reference line (RL1) than the other two of the fifth contact part (PO1), the sixth contact part (PO2), the seventh contact part (PO3), and the eighth contact part (PO4).
F16D 41/10 - Roues libres ou embrayages à roue libre avec organes d'accouplement intermédiaires d'arrêt entre une surface intérieure et une surface extérieure avec moyens de modifier le fonctionnement en roue libre à inversion automatique
Rolling bearings (10A, 10B) for rotatably supporting an inner member (30) in relation to an outer member (20) are provided with outer rings (11A, 11B) fitted into the outer member (20), inner rings (12A, 12B) fitted over the inner member (30), and a plurality of rolling bodies (13A, 13B) rollably disposed between the outer rings (11A, 11B) and the inner rings (12A, 12B). The outer rings (11A, 11B) have overlapping parts that overlap swing gears (50A, 50B) even when eccentric parts (43, 44) are positioned on the innermost diameter side when viewed in the axial direction.
F16H 1/32 - Transmissions à engrenages pour transmettre un mouvement rotatif avec engrenages à mouvement orbital dans lesquels l'axe central de la transmission est situé à l'intérieur de la périphérie d'un engrenage orbital
Provided are: a ball screw that is capable of improving adhesion to an outer peripheral surface of a ball screw shaft, excellent in sealability, and capable of reducing abrasion of a seal plate; and a seal member for a ball screw. This ball screw (10) comprises: a screw shaft (20) in which a spiral screw groove (21) is formed on the outer peripheral surface; a nut (30) in which a spiral screw groove (31) is formed on the inner peripheral surface; a plurality of balls (50) that roll on a load track constituted by the screw groove (21) of the screw shaft (20) and the screw groove (31) of the nut (30); and a seal member (40) that is attached to at least one end of the nut (30) in the axial direction and seals the gap between the screw shaft (20) and the nut (30). The seal member (40) has a ring-shaped seal plate (42) having an inner peripheral surface that contacts the outer peripheral surface of the screw shaft (20), and a pair of ring-shaped holding plates (41, 43) that sandwich the seal plate (42). The seal plate (42) is composed of a sponge material.
F16H 25/24 - Éléments essentiels pour ces mécanismes, p. ex. vis, écrous
F16H 25/22 - Mécanismes à vis avec billes, rouleaux ou organes similaires entre pièces travaillant en conjugaisonÉléments essentiels pour l'utilisation de ces organes
F16J 15/06 - Joints d'étanchéité entre surfaces immobiles entre elles avec garniture solide comprimée entre les surfaces à joindre
A magnetostrictive torque sensor for detecting a torque applied to a magnetostrictive member having magnetostrictive properties, includes a detection coil arranged on an outer peripheral side of the magnetostrictive member; a magnetic ring composed of a ferromagnetic material arranged on an outer peripheral side of the detection coil; a housing having a facing portion facing the magnetic ring across the detection coil; a plug member closing an opening formed between the magnetic ring and the facing portion; a resin mold section covering the housing while exposing the magnetic ring and the plug member; a cable electrically connected to the detection coil and drawn out from the housing and the resin mold section; and a heat shrinkable tube covering the housing, a portion of the resin mold section, and an end portion of the cable exposed from the housing and the resin mold section.
G01L 3/10 - Dynamomètres de transmission rotatifs dans lesquels l'élément transmettant le couple comporte un arbre élastique en torsion impliquant des moyens électriques ou magnétiques d'indication
96.
METHOD FOR MEASURING REVOLUTION PERIOD OF ROLLING ELEMENT OF ROLLING BEARING, ROLLING BEARING STATE DETECTING METHOD, MEASURING DEVICE, STATE MONITORING DEVICE, AND PROGRAM
Provided is a measuring device for measuring the revolution period of a rolling element of a rolling bearing, the measuring device including: an acquiring means for acquiring waveform data of a current and a voltage applied to the rolling bearing; a calculating means for calculating an instantaneous amplitude and an instantaneous phase from the waveform data using a Hilbert transform; a deriving means for deriving an impedance using the waveform data, the instantaneous amplitude, and the instantaneous phase; and an identifying means for identifying the period of the impedance using an autocorrelation function and identifying the period as the revolution period of the rolling element of the rolling bearing.
G01R 31/00 - Dispositions pour tester les propriétés électriquesDispositions pour la localisation des pannes électriquesDispositions pour tests électriques caractérisées par ce qui est testé, non prévues ailleurs
A ball screw device includes a nut (3), a screw shaft, and a plurality of balls arranged between the nut (3) and the screw shaft. The nut (3) includes a first member (11) disposed to surround the screw shaft, a second member (10) disposed between the screw shaft and the first member (11), and a third member (12) disposed between the first member (11) and the second member (10). The third member (12) includes a laminate body (12A) having a plurality of plates (22a, 22b) laminated in an axial direction. The laminate body (12A) includes an inner surface facing an outer surface of the second member (10). The inner surface of the laminate body (12A) has a shape corresponding to a shape of the outer surface of the second member (10).
F16H 25/22 - Mécanismes à vis avec billes, rouleaux ou organes similaires entre pièces travaillant en conjugaisonÉléments essentiels pour l'utilisation de ces organes
The magnetic encoder is constituted by integrally bonding a magnet portion obtainable by forming a magnetic material containing a magnetic powder and a binder for the magnetic powder in a circular ring shape to a slinger. The binder contains at least a thermoplastic resin and an impact resistance-improving agent.
F16J 15/326 - Joints d'étanchéité entre deux surfaces mobiles l'une par rapport à l'autre par joints élastiques, p. ex. joints toriques pourvus d’armatures ou de supports avec armatures ou supports rigides comprenant deux éléments d’armature ou de support, individuellement fixés sur chacune des surfaces, p. ex. joints de type cartouche avec moyens de détection ou de mesure de la rotation relative des deux éléments
G01P 3/44 - Dispositifs caractérisés par l'utilisation de moyens électriques ou magnétiques pour mesurer la vitesse angulaire
G01P 3/487 - Dispositifs caractérisés par l'utilisation de moyens électriques ou magnétiques pour mesurer la vitesse angulaire en mesurant la fréquence du courant ou de la tension engendrés de signaux ayant la forme d'impulsions délivrés par des aimants rotatifs
F16C 19/18 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges à la fois radiales et axiales avec plusieurs rangées de billes
A magnetostrictive torque sensor has: a holder having an inner cylindrical portion arranged around a rotating shaft; a side plate portion arranged on one side in an axial direction of the inner cylindrical portion; an outer cylindrical portion arranged on an outer side in a radial direction of the side plate portion; and a recessed accommodating portion communicating an inner space on an inner side in the radial direction of the outer cylindrical portion and an outer space, a cover covering an opening portion on the other side in the axial direction of the recessed accommodating portion, a flexible substrate having a detection portion; and a signal line portion, a part of which is accommodated inside the recessed accommodating portion, and a connector attached to a tip-end portion of the signal line portion, the cover having a connector support portion for supporting the connector.
G01L 3/10 - Dynamomètres de transmission rotatifs dans lesquels l'élément transmettant le couple comporte un arbre élastique en torsion impliquant des moyens électriques ou magnétiques d'indication
[Problem] To achieve the structure of a magnetostrictive torque sensor that can easily secure mountability to a fixed part. [Solution] A holder 4 has a storage recess part 13 that communicates the inner space with the outer space and opens the other side in an axial direction. A portion of a signal line part 43 of a flexible substrate 6 is stored in the storage recess part 13. A connector 7 is attached to the tip of the signal line part 43. A connector support part 26 is provided to support the connector 7 on a cover 5 that covers an opening part of the storage recess part 13.
G01L 3/10 - Dynamomètres de transmission rotatifs dans lesquels l'élément transmettant le couple comporte un arbre élastique en torsion impliquant des moyens électriques ou magnétiques d'indication
