A torque-dependent releasable disconnect coupling for an electric hand-held power tool, in particular a screwdriver, for selectively transmitting a torque from a drive shaft to an output shaft that is coaxial with respect to the drive shaft. An axially nondisplaceable guide ring guides a switching element, in particular a ball, and a second guide ring. A cam ring and the second guide ring are axially pretensioned against one another and accommodate the switching element axially between them. The disconnect coupling may be brought from a first, non-torque-transmitting switching position into a second, torque-transmitting switching position. The switching element is deflected in the axial direction relative to the cam ring, against the action of the pretensioning, when a first release torque in the first switching position is exceeded, thus bringing he disconnect coupling into the second switching position.
A protective element, in particular a cover, for the guard of a disk-shaped tool of an electric power tool, in particular an angle grinder. The protective element has a protective element body that is reversibly attached to the guard in an installed position by clamping the guard between attachment elements and a leaf spring of the protective element body. The invention also relates to a manufacturing method for the protective element and an electric power tool having this protective element.
A cover element for covering a spring-loaded clamping device which can be connected to a printed circuit board. A connecting section connects the cover element with a connecting section of the spring-loaded clamping device and a cover portion covers a conductor mount of the spring-loaded clamping device. The cover portion has an opening channel for form-fitting and/or force-fit mounting of a connecting strand, through which a conductor of the connecting strand can be guided and inserted into the conductor mount of the spring-loaded clamping device. A clamping system and a method for manufacturing the cover element are also provided.
An electric machine, in particular an electric motor, having an encapsulated magnetic air gap and the yoke ring of the stator being wound instead of the pole shoes. A method for manufacturing the electric machine is also provided.
A toolholder for a tool having a flat surface that can be rotated about an axis of rotation, in particular, a Weldon toolholder for a milling tool or a core drill. A clamping jaw has a contact surface spaced from the flat surface side of the flat surface and touches the flat surface when the clamping jaw is pressed against the flat surface in a second arrangement of the clamping jaw or in the assembly position of the tool. A stationary machine tool comprising this toolholder and a tool and a method for manufacturing thereof are also provided.
A stationary machine tool for machining, in particular core drilling, comprising a tool stand with a first tool stand housing interior. A chip guidance system comprises a magnet, wherein the magnet is arranged in the first tool stand housing interior such that chips produced by a machining process and entering the first tool stand interior are deflected by the chip guidance system.
A housing for an electric hand-held power tool, in particular for an angle grinder, having a housing opening for a mains cable end and having a maintenance opening which can be closed by a maintenance cover in order to permit manual access to the line contacts of the mains cable end which are arranged under the maintenance cover. An electric hand-held power tool formed with the housing is also provided.
A motor control unit for a brushless electric motor of a power tool, in particular a hand-held power tool, having an electronic control device having a power limiting device designed to limit the power absorption of the electric motor in order to restrict the power absorption of the electric motor to a maximum permissible maximum power value and to adjust this maximum power value during the operation of the electric motor as a function of the at least one temperature value. A corresponding power tool and a method are also provided.
A power tool, wherein a lubricant for gearbox lubrication can be accommodated in a gearbox housing interior of the gearbox housing, wherein the output shaft has a first end on which an insert tool unit can be mounted, and has a second end, wherein the output shaft is designed as a hollow spindle with a cavity. A hollow cylinder section is formed at its second end. An actuator is arranged in a rotationally resistant manner to the gearbox housing, which engages with the hollow cylinder section. Between the hollow cylinder section and the actuator, a gap extends along the axis of rotation which at its first end is connected to the cavity and at its second end to the gearbox housing interior. A shaft seal is disposed in the gap, which counteracts the leakage of lubricant from the gap towards the first end of the output shaft.
A tool device for use with a hand-held oscillation machine tool has at least one working region which is suitable for acting on a workpiece. The machine tool has a drive shaft with a machine connector device with an inner profile which widens conically in the direction of the rotational axis and has a profile contour which runs around the rotational axis with twelve convex projections which protrude inwards towards the rotational axis and twelve concave depressions which form an uninterrupted, continuously running profile wall, which are arranged rotationally symmetrically about the rotational axis. The conical widening is oriented in such a way that smaller internal diameters of the inner profile are situated closer to the machine tool and larger internal diameters are situated at a greater spacing from the machine tool. The tool device has a tool connector device which can be connected fixedly to the machine connector device for conjoint rotation, in order to transmit torques and forces between the machine tool and a tool device, with the result that the tool device carries out a rotational/oscillating movement coaxially with respect to the drive shaft. The tool connector device has an outer profile with a profile contour which runs around the rotational axis with at least one outwardly pointing projection for engaging into the depressions of the inner profile of the machine connector device. This projection has at least two contact surfaces. The profile contour of the tool connector device differs from the profile contour of the machine connector device by way of: the number of projections; interruptions or recesses in the profile contour of the tool connector device; the course of the profile contour of the tool connector device which does not run conically, but rather parallel to the rotational axis, or at a different inclination than the profile contour of the machine connector device.
A bearing device for supporting an accumulator module on an interface of a power tool housing section of a handheld tool and a corresponding accumulator housing section of the accumulator module, including at least one bearing element, which is designed to captively support the accumulator module in a connection position, in which the accumulator module is electrically connected to the handheld tool, and to permit the transfer of the accumulator module from the connection position into a removal position, in which the accumulator module may be removed from the handheld tool. The at least one bearing element includes a polymer and is arranged between the power tool housing section and the accumulator housing section in the connection position for the purpose of supporting the power tool housing section and the accumulator housing section.
The invention relates to a tool device which is suitable for use with a machine tool, in particular a hand guided machine tool, having a driving device moving, in particular in an oscillating manner, around a driving axis. The tool device has an attachment device which allows it to be fastened on a machine tool such that its driving axis and an axis of rotation of the tool substantially coincide. The attachment device, for absorbing the driving force, has at least two driving area regions, which are spaced apart from said tool axis of rotation and each has a plurality of surface points. The tangent planes to said surface-area points are inclined in regard to an axial plane, which encloses the tool axis of rotation. Furthermore, said tangent planes are inclined regard to a radial plane which extends perpendicularly to the tool axis of rotation. This means that the torque introduced into the tool device by the machine tool, via the driving device, is reliably absorbed.
The invention relates to a housing (20) for an electric hand-held power tool (1), in particular for an angle grinder, having a housing opening (23) for a mains cable end (10) and having a maintenance opening (31) which can be closed by a maintenance cover (50) in order to permit manual access to the line contacts (15) of the mains cable end (10) which are arranged under the maintenance cover. The invention also relates to an electric hand-held power tool (1) formed with said housing (20).
Hand-operated tools and implements for treatment of materials, and for construction, repair and maintenance, namely, magnetic machinery, magnetic stand drills, cutting saws, annular cutters, and power saw blades
(1) Hand-operated tools and implements for treatment of materials, and for construction, repair and maintenance, namely, magnetic vices, magnetic clamps for welders, magnetic pick-up lifting tools for welders; Hand-operated tools and implements for treatment of materials, and for construction, repair and maintenance, namely, magnetic clamps for welders and magnetic hand clamps for metalworking; Hand-operated tools and implements for treatment of materials, and for construction, repair and maintenance, namely, magnetic alignment tools, namely, clamping jaws; Hand-operated tools and implements for treatment of materials, and for construction, repair and maintenance, namely, magnetic holders for tools, namely vices.
Hand-operated tools and implements for treatment of materials, and for construction, repair and maintenance, namely, magnetic vices, magnetic clamps, magnetic clamps for welders, magnetic pick-up lifting tools for welders, alignment tools for welders, magnetic alignment tools, and magnetic holders for tools and magnetic hand tools
(1) Hand tools and hand-operated implements, namely, magnetic vices, magnetic clamps, magnetic clamps for welders, magnetic pick-up lifting tools for welders, pipe holders in the nature of magnetic hand-operated clamp tools.
(1) Hand-operated tools and implements for treatment of materials, and for construction, repair and maintenance, namely, core drills and parts therefor.
Hand tools and hand-operated implements, namely, magnetic vices, magnetic clamps, magnetic clamps for welders, magnetic pick-up lifting tools for welders, alignment tools for welders, and magnetic holders for tools and magnetic hand tools
A handheld electric power tool, in particular an angle grinder, having a housing that comprises a first housing part and a second housing part, having an electric motor that is accommodated in the housing and drives a rotor shaft that is connected in a force-transmitting manner to an output unit accommodated in a gear head. A housing ring is provided that connects the first housing part to the second housing part at the front.
B24B 23/02 - Portable grinding machines, e.g. hand-guidedAccessories therefor with rotating grinding toolsAccessories therefor
B25F 5/02 - Construction of casings, bodies or handles
B24B 47/12 - Drives or gearings for grinding machines or devicesEquipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
A handheld electric power tool, in particular an angle grinder, having a housing in which an electric motor is accommodated that drives a rotor shaft that is connected in a force-transmitting manner to an output unit accommodated in a gear head. A housing ring is provided that makes available at least one guide section for the gear head and a guide for the electric motor. An air guide section, in which a fan is accommodated that is attached to the rotor shaft, is formed on the side of the housing ring facing away from the housing.
An electric motor of an AC-operated, handheld power tool, with a stator that has multiple windings that are accommodated in a laminated stator core and are electrically insulated therefrom with basic insulation, in which stator a rotor is supported so as to be rotatable about an axis of rotation, wherein the rotor has a rotor shaft on which a laminated rotor core with a multiplicity of permanent magnets is held, which laminated rotor core is electrically insulated from the rotor shaft, characterized in that the stator is enclosed by a motor housing that is electrically insulated from the windings of the stator, and in that a supplementary electrical insulation is formed between the motor housing and the rotor shaft.
H02K 5/18 - Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
H02K 5/15 - Mounting arrangements for bearing-shields or end plates
H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
H02K 7/14 - Structural association with mechanical loads, e.g. with hand-held machine tools or fans
H02K 9/06 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
H02K 11/21 - Devices for sensing speed or position, or actuated thereby
Machines and machine tools for treatment of materials, namely, * electric * power-operated angle grinders [ and cordless angle grinders ] and structural parts for the aforesaid goods
A drilling machine, in particular a magnetic core drilling machine. The drilling machine having a magnetic base to detachably secure the drilling machine to a surface. A drive motor is arranged in a housing and has a rotor shaft with a rotor shaft longitudinal axis that is connected in a power-transmitting manner via a gear mechanism to a tool spindle with a spindle longitudinal axis. A tool holder is connected to the tool spindle to receive a drilling tool. The spindle longitudinal axis is aligned substantially parallel to the longitudinal axis of the rotor shaft, and the tool spindle is axially adjusted along the longitudinal axis of the spindle relative to the drive motor and the magnetic base.
A power tool, in particular an angle grinder, having a drive motor accommodated in a housing which drives a rotor shaft, a tool spindle comprising a tool holder which is preferentially connected to the rotor shaft in a power-transmitting manner by a gearing, as well as a control switch for activating the drive motor, wherein the control switch comprises a first switching element which is pivotably mounted on the housing about a pivot axis between a first switch position for switching on the drive motor and a second switch position for switching off the drive motor, and a second switching element which is rotatable about a rotational axis between a locked position which blocks the first switching element from moving into the first switch position and a release position which enables the first switching element to move into the first switch position.
An EC motor is provided having a stator, in which an armature is rotatably supported, the armature including an armature shaft, on which an armature core having a plurality of permanent magnets is held, the armature core being electrically insulated against the armature shaft with the aid of a casting compound, and a balance ring being provided on at least one axial end of the armature core, which is accommodated on the armature shaft by a central recess, a gap between the armature shaft and the central recess of the balance ring being filled with casting compound, and the permanent magnets being held in pockets of the armature core by casting compound.
H02K 15/03 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
H02K 15/12 - Impregnating, moulding insulation, heating or drying of windings, stators, rotors or machines
H02K 21/14 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
A magnetic base for an electric power tool, in particular for a magnetic core drilling machine. The magnetic base having a base body, in which at least one first solenoid coil forming an electromagnet is accommodated in a receiving space, whose magnetic force is switchable between a maximum resulting holding force and a minimum resulting holding force. A first side that is adapted to be coupled with the electric power tool. An oppositely situated second side, which is adapted to be placed on a workpiece to be processed. The receiving space is designed such that an insertion of the at least one solenoid coil into the receiving space is possible only from the first side.
A magnetic base for an electric machine tool, in particular for a magnetic core drilling machine. A body that is accommodated in a receiving space. At least one first magnet coil constituting an electromagnet, a coil winding of the at least one first magnet coil being wound on a bobbin and a magnetic force of which is switchable between a maximum resultant holding force and a minimum resultant holding force. The coil winding of the magnet coil has two end sections that are each connected to a connecting cable that serves to make electrical contact between the magnetic coil and the electric machine tool. The body has a first side adapted to be coupled to the electric machine tool and has an opposite second side adapted to be placed on a workpiece that is to be processed. End sections of the coil winding are connected to the connecting cables.
B23B 45/14 - Means for holding or guiding the drilling device or for securing it to the workThrust stands
B25H 1/00 - Work benchesPortable stands or supports for positioning portable tools or work to be operated on thereby
B28D 1/14 - Working stone or stone-like materials, e.g. brick, concrete, not provided for elsewhereMachines, devices, tools therefor by boring or drilling
B23Q 3/15 - Devices for holding work using magnetic or electric force acting directly on the work
The invention relates to a machine tool with a tool receiving device that is movable around an output shaft. The tool receiving device is designed to hold a tool device on the machine tool such that the output shaft and a tool rotation axis substantially coincide. The tool receiving device has at least one torque transmission region and a holding device. To transmit a driving force to the tool device, the torque transmission region has at least two output area regions arranged at a distance from said output shaft, with each having a multiplicity of surface points. The tangent planes to said surface points are inclined in regard to an axial plane including said output shaft. The tangent planes are inclined in regard to a radial plane extending perpendicularly to the output shaft. The machine tool thus transmits the output torque to the tool device via the tool receiving device.
The invention relates to an electric motor (1) of an AC voltage-operated handheld power tool (2), comprising a stator (6) which has a plurality of windings (9) which are accommodated in a stator laminated core (10) and have basic electrical insulation from said stator laminated core, in which stator laminated core a rotor (7) is mounted such that it can rotate about a rotation axis (8), wherein the rotor (7) has a rotor shaft (11) on which a rotor laminated core (12) comprising a plurality of permanent magnets (13) is held, the rotor laminated core being electrically insulated from the rotor shaft (11), characterized in that the stator (6) is surrounded by a motor housing (15) which is electrically insulated from the windings (9) of the stator (6), and in that an additional electrical insulation (16) is formed between the motor housing (15) and the rotor shaft (11).
H02K 7/00 - Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
The invention relates to an electric hand tool (1), more particularly an angle grinder (2), having a housing (3), which comprises a first housing part (4) and a second housing part (5), with an electric motor (6), which is received in the housing (3) and which drives a rotor shaft (11) which is connected for force transfer to an output unit (13) received in a transmission head (12). A housing ring (16) is provided to connect the first housing part (4) to the second housing part (5) on the front face thereof.
The invention relates to an electric hand-held power tool (1), in particular an angle grinder (2), comprising a housing (3) equipped with an electric motor (6) which drives a rotor shaft (11) that is connected to an output unit (13) received in a gear head (12) so as to transmit a force. A housing ring (16) is provided which provides at least one guide section (27) for the gear head (12) and a guide (30) for the electric motor (6). The housing ring (16) side facing away from the housing (3) is equipped with an air guide section (24) in which a fan (25) secured to the rotor shaft (11) is received.
An electric portable power tool, having a housing, a shaft, a control cam, an electric drive accommodated in the housing to drive the drive shaft, and an output unit that is positively connected with the drive via a mechanical shut-off clutch to transfer torque from the drive to an insertion tool connected with the output unit. The mechanical shut-off clutch comprises a control ring that is axially mounted against the force of the return spring and at least one switch element that is run on the control cam. The control cam is delimited at one end by a first switching contour for providing a release torque of the shut-off clutch and by a boundary contour at another end. The control cam is associated with a second switching contour for providing a pre-torque which is less than the release torque.
B25B 21/00 - Portable power-driven screw or nut setting or loosening toolsAttachments for drilling apparatus serving the same purpose
B25F 5/00 - Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
B25B 23/14 - Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
B25B 23/147 - Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for electrically operated wrenches or screwdrivers
A suction device for a handheld power tool that is adapted to be driven in oscillation and that is equipped with a gearbox extension housing for mounting of the suction device. The suction device having a body mounted on the gearbox extension housing of the handheld power tool via a mounting section and an air duct formed in the body, the air duct being delimited at one end by an air inlet and at an other end by an air outlet on which a suction apparatus or a dust exhauster is adapted to be detachably mounted. The mounting section of the body is formed essentially as a hollow cylinder and extends between a first plane and a second plane, which are substantially parallel.
B23Q 11/00 - Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling workSafety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
B25F 5/00 - Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
B23D 59/00 - Accessories specially designed for sawing machines or sawing devices
B23D 61/00 - Tools for sawing machines or sawing devicesClamping devices for these tools
B25F 3/00 - Associations of tools for different working operations with one portable power-drive meansAdapters therefor
A handheld electric power tool that is adapted to be driven in oscillation, the handheld electric power tool having a housing and a drive arranged in the housing for driving a toolholder, which is arranged on a tool shaft coupled to the drive and on which a tool is detachably installed. The tool shaft is accommodated in an output unit, which includes a gearhead accommodated in a gearhead housing, and a collar, which is designed so as to make possible a tool-free seating of an attachment in an installation direction oriented parallel to a longitudinal axis of the gearhead, is formed on the output unit.
B25F 5/02 - Construction of casings, bodies or handles
B25F 3/00 - Associations of tools for different working operations with one portable power-drive meansAdapters therefor
B23Q 11/00 - Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling workSafety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
B25H 1/00 - Work benchesPortable stands or supports for positioning portable tools or work to be operated on thereby
B23Q 3/00 - Devices holding, supporting, or positioning, work or tools, of a kind normally removable from the machine
The invention relates to a tool device which is suitable for use with a machine tool, in particular a hand guided machine tool, having a driving device moving, in particular in an oscillating manner, around a driving axis. The tool device has an attachment device which allows it to be fastened on a machine tool such that its driving axis and an axis of rotation of the tool substantially coincide. The attachment device, for absorbing the driving force, has at least two driving area regions, which are spaced apart from said tool axis of rotation and each has a plurality of surface points. The tangent planes to said surface-area points are inclined in regard to an axial plane, which encloses the tool axis of rotation. Furthermore, said tangent planes are inclined regard to a radial plane which extends perpendicularly to the tool axis of rotation. This means that the torque introduced into the tool device by the machine tool, via the driving device, is reliably absorbed.
B23B 31/10 - Chucks characterised by the retaining or gripping devices or their immediate operating means
B27B 5/30 - Sawing machines working with circular saw bladesComponents or equipment therefor DetailsComponent partsAccessories for mounting or securing saw blades or saw spindles
B24B 45/00 - Means for securing grinding wheels on rotary arbors
B23D 61/00 - Tools for sawing machines or sawing devicesClamping devices for these tools
B27B 5/32 - Devices for securing circular saw blades to the saw spindle
B24B 23/04 - Portable grinding machines, e.g. hand-guidedAccessories therefor with oscillating grinding toolsAccessories therefor
A suction device for a hole saw of a hand-held power tool oscillatingly driven about an oscillation axis. A substantially disk-shaped base body has a first side that faces the hand-held power tool and a second side that faces the hole saw. A fastening section detachably fastens the suction device to an oscillatingly driven hand-held power tool; and a connecting piece connects the suction device to a suction apparatus.
B23B 51/04 - Tools for drilling machines for trepanning
B23Q 11/00 - Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling workSafety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
B23D 61/00 - Tools for sawing machines or sawing devicesClamping devices for these tools
B27B 19/00 - Other reciprocating saws with power driveFret-saws
B23D 59/00 - Accessories specially designed for sawing machines or sawing devices
A gear head for a hand-held power tool for machining workpieces, in particular for an angle grinder. The gear head including a gear plate, a housing closable by the gear plate, in which a power take-off is accommodated, which is connectable to a drive of the hand-held power tool, the power take-off including a tool shaft protruding from the gear plate, which is at least partially surrounded by a safety guard fastenable to a gear flange of the housing. A securing lever locks the safety guard on the gear flange, the securing lever being adjustable around a pivot axis between a first position, in which the safety guard is rotatably fixedly connected to the gear flange and a second position, in which the safety guard is rotatable with respect to the gear flange against a force of a restoring element acting in a direction of the first position.
An oscillating power tool with an electric motor is provided, including an armature shaft with an armature and a fan wheel, including an eccentric arranged on the armature shaft at one end thereof, a first balancing mass for balancing an unbalance of the eccentric and possibly an eccentric bearing, being arranged in the proximity of the eccentric or the eccentric bearing, respectively, however, at an axial distance, further including a second balancing mass for balancing a couple unbalance caused by the axial distance between the eccentric and the eccentric bearing, respectively, and the first balancing weight, wherein the second balancing mass is arranged on the armature shaft at the side facing away from the eccentric or the eccentric bearing. Also a method for balancing such an electric motor is provided.
A magnetic base for an electric power tool, in particular for a magnetic core drilling machine. The magnetic base having a base body that has a contact surface for contacting a workpiece to be machined, at least one first permanent magnet and at least one second permanent magnet arranged in the base body, the at least one and second permanent magnet having magnetic forces that interact to form a resulting holding force. The at least one first permanent magnet and the at least one second permanent magnet are supported in the base body and rotatable around its own rotation axis between a first position, in which the resulting holding force of the magnetic base is maximized, and a second position, in which the resulting holding force of the magnetic base is minimized.
A method for operating an electric core drilling machine, in particular a magnetic core drilling machine, comprising the steps: identification of a core drill bit detachably connected to the core drilling machine, by means of an information carrier associated with the core drill bit and an information receiver associated with the core drilling machine; detection of a load quantity of the core drill bit; determination of a wear value of the core drill bit on the basis of the value of the load quantity; issuance of an error value when the wear value exceeds a wear limit value; as well as issuance of a signal to indicate the necessity of replacing and/or repairing the core drill bit. In addition, the invention relates to a core drilling machine and a core drill bit for carrying out the method.
B23B 49/00 - Measuring or gauging equipment on boring machines for positioning or guiding the drillDevices for indicating failure of drills during boringCentring devices for holes to be bored
B23B 51/04 - Tools for drilling machines for trepanning
A magnetic base for an electric machine tool, in particular for a magnetic core drilling machine, having a body in which is accommodated at least one first permanent magnet, the magnetic force of which combines with the magnetic force of at least one second permanent magnet to form a resultant holding force, wherein the at least one second permanent magnet is supported in the body such that it can rotate about a rotation axis through an angle of rotation between a first position in which the resultant holding force of the magnetic base is maximized and a second position in which the resultant holding force of the magnetic base is minimized, and having a controller for rotating the second permanent magnet between the first position and the second position.
A tool attachment, in particular hole saw, for a power tool having a driving axle that is drivable in oscillation. The tool attachment including a connecting device with which the tool attachment is attachable to the power tool such that the driving axle thereof and a tool axis essentially coincide. A work area has teeth, with the work area being at least partially circular in design and adjoining a hollow, cylindrical base. Openings are formed in the base, the openings constituting at least 60%, at least 80%, or at least 90% of the area of the base.
A tool holder for a machine tool, in particular for a core drilling machine, having a hollow shaft which has, at one end for coupling to the drive of the machine tool, a connector and, at the other end, a receiving opening with a plurality of openings in which locking elements are accommodated which are radially adjustable between a clamping position and an release position for securing a tool accommodated in the receiving opening. A switching sleeve is provided, which is adjustably mounted on the hollow shaft between a first switching position and a second switching position, a first subset of the locking elements being provided in the first switching position for locking the tool in the receiving opening, and a second subset of the locking elements being provided in the second switching position for locking the tool in the receiving opening, while the adjustment of the respective remaining locking elements is deactivated.
B23B 31/107 - Retention by laterally-acting detents, e.g. pins, screws, wedgesRetention by loose elements, e.g. balls
B23B 27/00 - Tools for turning or boring machinesTools of a similar kind in generalAccessories therefor
B23B 31/06 - Features relating to the removal of tools or workAccessories therefor
B23Q 3/12 - Devices holding, supporting, or positioning, work or tools, of a kind normally removable from the machine for securing to a spindle in general
A housing for an electric machine tool, in particular for a core drill, said housing in which a motor is accommodated, which has a motor shaft for driving a tool mount and to which cooling air is supplied through at least one air guide duct, which is delimited at one end by at least one air inlet and at the other end by at least one air outlet. A guide structure, providing air guidance for the cooling air and associated with a motor mount, in which the motor is at least partially accommodated, is disposed in the air guide duct downstream from the at least one air inlet.
An EC motor for an electric hand tool having a stator in which a rotor is rotatably mounted, which comprises a rotor lamination stack, which has a passage opening and is formed of individual laminations, and a rotor shaft which is cast in the passage opening of the rotor lamination stack by means of a casting compound, and having a plurality of permanent magnets, which are received in the pockets formed in the rotor lamination stack. An annular channel, which is connected to the pockets in a fluid-conducting manner via radial channels, each of which is formed of a plurality of channel sections formed in adjacent laminations of the rotor lamination stack, is formed between the rotor shaft and the wall of the passage opening for supplying the casting compound from the annular channel to the pockets. A method is also provided for producing a rotor for an EC motor.
H02K 15/03 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
H02K 15/12 - Impregnating, moulding insulation, heating or drying of windings, stators, rotors or machines
A torque-dependent, releasable clutch for a hand-held power tool is specified, which includes a first clutch element, which interacts with a second clutch element to transmit a torque, at least one of the two clutch elements being movable with respect to the other clutch element and being pretensioned by a spring element, the spring element having a nonlinear load-displacement characteristic.
F16D 7/02 - Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type
F16D 7/00 - Slip couplings, e.g. slipping on overload, for absorbing shock
F16D 43/21 - Internally controlled automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure with friction members
B25B 23/147 - Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for electrically operated wrenches or screwdrivers
B25B 23/14 - Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
B25B 21/00 - Portable power-driven screw or nut setting or loosening toolsAttachments for drilling apparatus serving the same purpose
A gearhead for a handheld power tool for machining workpieces, having a housing in which an output that can be connected to a drive of a handheld power tool is accommodated, and also having a tool shaft to which a tool can be coupled, wherein a braking device that can be moved between a braking position and a release position and that acts upon the tool shaft is provided for braking of the tool shaft. A switching device is provided that can be moved between a first switching position, in which the tool shaft is connected to the output in a power transmitting manner and in which the braking device is transferred into the release position, and a second switching position, in which the tool shaft is decoupled from the output and in which the braking device is transferred into the braking position.
B23Q 11/00 - Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling workSafety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
B24B 23/02 - Portable grinding machines, e.g. hand-guidedAccessories therefor with rotating grinding toolsAccessories therefor
B24B 23/08 - Portable grinding machines designed for fastening on workpieces or other parts of particular section, e.g. for grinding commutators
B25F 5/02 - Construction of casings, bodies or handles
F16H 35/00 - Gearings or mechanisms with other special functional features
A handheld power tool having a drive driving a motor shaft, which is accommodated in a power tool housing, in which at least one air inlet covered by a dust protection element is formed, and having a tool interface for connecting a tool. The dust protection element is pushed onto the power tool housing in an insertion direction and is secured on the power tool housing.
An electronic unit for a hand-held power tool, having a mounting frame having an accommodation space into which a circuit board carrying a plurality of electronic components is inserted and at least one heat sink for the heat dissipation of waste heat arising at the electronic components. A slot section with at least one insertion slot, oriented perpendicular to the printed circuit board, for mounting an electronic component along a direction of insertion is formed on the mounting frame. The at least one heat sink is associated with the slot section.
A hand held machine tool for machining workpieces, comprising a housing in which a motor driving a rotor shaft is accommodated, and having an air guide region formed in the housing for supplying cooling air to the motor along a main flow direction oriented substantially parallel to the motor longitudinal axis. The air guidance region is limited at one end by at least one air inlet and at the other end by at least one air outlet for discharging the cooling air from the housing. A separator is arranged in the air guide region for dividing the cooling air into an outer partial air flow flowing around the outer circumference of the motor and into an inner partial air flow flowing through the motor. The separator is formed such that a degree of contamination of the outer partial air flow is greater than a degree of contamination of the inner partial air flow.
H02K 9/06 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
B25F 5/00 - Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
H02K 7/14 - Structural association with mechanical loads, e.g. with hand-held machine tools or fans
B23Q 11/12 - Arrangements for cooling or lubricating parts of the machine
B24B 23/02 - Portable grinding machines, e.g. hand-guidedAccessories therefor with rotating grinding toolsAccessories therefor
B24B 55/10 - Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
70.
Drilling device and method for operating a drilling device
A drilling device having a motor for driving a tool received in a tool holder, wherein the motor is coupled to a power source providing electrical operating power, and having a first switch for switching on the motor. A temperature switching element is provided, which is reversibly transferred from a first switching position to a second switching position, which shuts off the motor when the limit temperature of the switched-on motor is exceeded. For cooling the motor, the first switch and the temperature switching element are connected such that in the second switching position of the temperature switching element, it is possible to switch on the motor by pressing and holding the first switch. Moreover, the invention relates to a method for operating a drilling device.
H02K 17/32 - Structural association of asynchronous induction motors with auxiliary mechanical devices, e.g. with clutches or brakes
H02P 29/64 - Controlling or determining the temperature of the winding
B23B 39/10 - General-purpose boring or drilling machines or devicesSets of boring or drilling machines characterised by the drive, e.g. by fluid-pressure drive, pneumatic power drive
B25F 5/00 - Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
H02P 29/032 - Preventing damage to the motor, e.g. setting individual current limits for different drive conditions
H02H 7/085 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
71.
Method for manufacturing an armature for an EC motor
An EC motor is provided having a stator, in which an armature is rotatably supported, the armature including an armature shaft, on which an armature core having a plurality of permanent magnets is held, the armature core being electrically insulated against the armature shaft with the aid of a casting compound, and a balance ring being provided on at least one axial end of the armature core, which is accommodated on the armature shaft by a central recess, a gap between the armature shaft and the central recess of the balance ring being filled with casting compound, and the permanent magnets being held in pockets of the armature core by casting compound.
H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
H02K 1/28 - Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
H02K 1/30 - Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
H02K 15/03 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
H02K 15/12 - Impregnating, moulding insulation, heating or drying of windings, stators, rotors or machines
H02K 21/14 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
72.
Oscillation drive with adjustable oscillation angle
An oscillation drive with a drive and with an eccentric coupling drive for converting a rotary motion of the drive into an oscillating rotary motion of a tool spindle about its longitudinal axis is disclosed, wherein the eccentric coupling drive has an eccentric with a first eccentricity that is driven by the drive and that works together with a coupling element that is coupled to the tool spindle in order to convert the motion of the eccentric into an oscillating rotary motion of the tool spindle, wherein the eccentric is coupled to an additional eccentric with a second eccentricity so that the eccentricities are superimposed, wherein the relative position between the eccentric and the additional eccentric is adjustable to at least two different positions in order to change the amplitude of the oscillating motions of the tool spindle.
F16H 25/16 - Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for interconverting rotary motion and oscillating motion
B24B 27/08 - Grinders for cutting-off being portable
B27B 19/00 - Other reciprocating saws with power driveFret-saws
B23D 51/16 - Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular partsCarrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of drives or feed mechanisms for straight tools, e.g. saw blades, or bows
H02K 7/00 - Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
H02K 7/075 - Means for converting reciprocating motion into rotary motion or vice versa using crankshafts or eccentrics
B25F 3/00 - Associations of tools for different working operations with one portable power-drive meansAdapters therefor
B23D 61/00 - Tools for sawing machines or sawing devicesClamping devices for these tools
B24B 23/04 - Portable grinding machines, e.g. hand-guidedAccessories therefor with oscillating grinding toolsAccessories therefor
B24B 47/16 - Drives or gearings for grinding machines or devicesEquipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces performing a reciprocating movement, e.g. during which the sense of rotation of the working-spindle is reversed
B24B 49/00 - Measuring or gauging equipment for controlling the feed movement of the grinding tool or workArrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
The invention relates to a tool device which is suitable for use with a machine tool, in particular a hand guided machine tool, having a driving device moving, in particular in an oscillating manner, around a driving axis. The tool device has an attachment device which allows it to be fastened on a machine tool such that its driving axis and an axis of rotation of the tool substantially coincide. The attachment device, for absorbing the driving force, has at least two driving area regions, which are spaced apart from said tool axis of rotation and each has a plurality of surface points. The tangent planes to said surface-area points are inclined in regard to an axial plane, which encloses the tool axis of rotation. Furthermore, said tangent planes are inclined regard to a radial plane which extends perpendicularly to the tool axis of rotation. This means that the torque introduced into the tool device by the machine tool, via the driving device, is reliably absorbed.
B23B 31/10 - Chucks characterised by the retaining or gripping devices or their immediate operating means
B27B 5/30 - Sawing machines working with circular saw bladesComponents or equipment therefor DetailsComponent partsAccessories for mounting or securing saw blades or saw spindles
B24B 45/00 - Means for securing grinding wheels on rotary arbors
B27B 5/32 - Devices for securing circular saw blades to the saw spindle
B24B 23/04 - Portable grinding machines, e.g. hand-guidedAccessories therefor with oscillating grinding toolsAccessories therefor
B23D 61/00 - Tools for sawing machines or sawing devicesClamping devices for these tools
An oscillatingly driven machine tool having a housing in which a motor with a motor shaft is received, on which an eccentric element is accommodated, with a spindle head, with a tool spindle that is rotatably mounted about its longitudinal axis in the spindle head, on which a coupling element is non-rotatably received, which cooperates with the eccentric element for generating a movement of the tool spindle which oscillates about its longitudinal axis such that, in addition to the oscillating movement, a differing, superimposed movement is introduced into the coupling element.
B23D 51/10 - Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular partsCarrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of devices for mounting straight saw blades or other tools for hand-held or hand-operated devices
B23D 51/16 - Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular partsCarrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of drives or feed mechanisms for straight tools, e.g. saw blades, or bows
B24B 23/03 - Portable grinding machines, e.g. hand-guidedAccessories therefor with rotating grinding toolsAccessories therefor the tool being driven in a combined movement
B24B 23/04 - Portable grinding machines, e.g. hand-guidedAccessories therefor with oscillating grinding toolsAccessories therefor
B25F 3/00 - Associations of tools for different working operations with one portable power-drive meansAdapters therefor
B23B 31/10 - Chucks characterised by the retaining or gripping devices or their immediate operating means
B24B 47/12 - Drives or gearings for grinding machines or devicesEquipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
B27B 19/00 - Other reciprocating saws with power driveFret-saws
B24B 27/08 - Grinders for cutting-off being portable
The invention relates to a machine tool, in particular a hand held machine tool, which has a tool receiving device that is movable, in particular in an oscillating manner, around an output shaft. The tool receiving device is designed to hold a tool device on the machine tool in such a manner that the output shaft and a tool rotation axis substantially coincide. The tool receiving device has at least one torque transmission region and a holding device. In order to transmit a driving force to the tool device, the torque transmission region has at least two output area regions that are arranged at a distance from said output shaft and each have a multiplicity of surface points. Here, the tangent planes to said surface points are inclined in regard to an axial plane which includes said output shaft. Furthermore, the tangent planes are inclined in regard to a radial plane which extends perpendicularly to the output shaft. In this way, the output torque is transmitted reliably to the tool device by the machine tool via the tool receiving device.
A hand-held tool machine comprising a housing is disclosed wherein a motor for driving a tool as well as a switch for switching on and off the motor are received, including a switching arrangement having a switch that can be moved between a non-activated position and an activated position for activating the switch, and including a locking arrangement that can be moved between a blocking position and a release position, wherein the switch lever can only be moved into the activated position, when the locking arrangement is in the release position, and wherein the locking arrangement allows for a locking of the switch lever in the activated position, wherein the locking arrangement includes a slider that is received on the switch lever slidable between a locking position and a release position, wherein on the slider there is provided a blocking element cooperating with a counter element arranged at the housing for blocking a movement of the switch lever into the activated position when being in the blocking position and for allowing a movement of the switch lever into the activated position upon shifting the slider into the release position, and wherein on the slider there is provided a latching element that cooperates with a counter element on the housing for allowing a latching of the switch lever in the activated position.
An oscillating power tool with an electric motor is provided, including an armature shaft with an armature and a fan wheel, including an eccentric arranged on the armature shaft at one end thereof, a first balancing mass for balancing an unbalance of the eccentric and possibly an eccentric bearing, being arranged in the proximity of the eccentric or the eccentric bearing, respectively, however, at an axial distance, further including a second balancing mass for balancing a couple unbalance caused by the axial distance between the eccentric and the eccentric bearing, respectively, and the first balancing weight, wherein the second balancing mass is arranged on the armature shaft at the side facing away from the eccentric or the eccentric bearing. Also a method for balancing such an electric motor is provided.
A tool holder for a machine tool, in particular a core drill, is specified, having a hollow shaft (12), on which an interface (14) is formed for coupling to a rotary drive of a machine tool. The tool holder (10) allows a first tool shaft (64), which is formed for locking with a ball (34) which engages in an associated depression in the tool shaft, to be held and allows a second tool shaft (66), which is formed for locking with a flat piece on the tool shaft (66), to be held and locked. Locking takes place automatically after a tool shaft (64, 66) is inserted into the tool holder (10).
A pipe milling machine for separating and/or cutting a pipe to length is disclosed. In an embodiment the pipe milling machine includes a milling wheel configured to separate the pipe and a motor configured to generate a feed of the pipe milling machine and to drive the milling wheel, wherein driving the milling wheel is independent of separating the pipe.
A pipe milling machine for separating and/or cutting a pipe to length includes a drive unit configured to generate a feed force to the pipe and a holding device configured to hold the pipe. The holding device is mountable around the pipe, the drive unit engages in or touches down on the holding device, the feed force is transferred to the holding device in a location, which contacts the pipe or which is adjacent to a location which contacts the pipe, and/or the drive unit is guided by the holding device.
A hand-guided machine tool is provided, in particular a hand-guided electric power tool, having a housing, whereon a grip part is provided which projects from a stop surface at one end of the housing, wherein the stop surface protrudes laterally with respect to the grip part at all sides and merges into the grip part via a preferably concave curvature.
An electric power tool is disclosed. In an embodiment, the electric power tool includes a tool, a tool holder part and a main body with a plurality of rivets integrated with the main body. The rivets include rivet shafts of a cross section for producing a positive-locking rivet joint of the tool with the tool holder part, wherein the tool and the tool holder part have circular openings which are aligned with each other, and wherein the rivet shafts are positioned aligned with the openings on the main body and protrude through the aligned openings.
B23D 23/04 - Machines or devices for shearing or cutting profiled stock by means of holding-dies, arranged side by side, subjecting the stock to torsional stress
B24B 23/04 - Portable grinding machines, e.g. hand-guidedAccessories therefor with oscillating grinding toolsAccessories therefor
B21K 25/00 - Uniting components to form integral members, e.g. turbine wheels and shafts, caulks with inserts, with or without shaping of the components
A grinding tool for a grinding device with an oscillatory drive, in particular a rotary oscillatory drive is disclosed, the drive shaft of which can be driven about its longitudinal axis, wherein the grinding tool includes a holder having a support for securing to the drive shaft of the oscillatory drive, and whereon a form profile with a grinding mechanism is provided, wherein the holder includes a profile support for releasable securement of the form profile, and wherein the profile support includes a clamping region, into which the form profile can be inserted with a holding section and can be fixed thereto, and which can be elastically enlarged for releasing the form profile.
A hand tool having a tool spindle that can be driven rotatingly oscillatingly, with an outer housing having a gripping region, an inner housing that is at least partially arranged within the outer housing and coupled therewith, and further having a drive unit including a drive shaft that can be driven rotatingly. The drive unit is received within the inner housing. The drive shaft defines a drive axis. The outer and the inner housings are coupled with each other by a deformable damping element, which in the non-mounted state is formed plate-shaped. The damping element in a mounted state defines a peripheral section and an axial section. The peripheral section in the mounted state is configured for transmitting radial forces between the outer housing and the inner housing. The axial section in the mounted state is configured for transmitting axial forces between the outer housing and the inner housing.
The invention relates to an oscillating power tool with an electric motor (12) which has an armature shaft (36) with an armature (38) and a fan wheel (40), comprising an eccentric (32) arranged on the armature shaft (36) at an end of the armature shaft (36), comprising a first balancing mass (44) for balancing an unbalance of the eccentric (32) and optionally of an eccentric bearing (42) which is arranged in the proximity of the eccentric (32) or the eccentric bearing but at an axial distance therefrom, and comprising a second balancing mass (46) for balancing a couple unbalance caused by the axial distance between the eccentric (32) or the eccentric bearing (42) and the first balancing weight (44). The second balancing mass (46) is arranged on the amateur shaft (36) at the side facing away from the eccentric (32) or the eccentric bearing (42). The invention further relates to a method for balancing such an electric motor (12).
The invention relates to a rotor for an electronically commutated electric motor, comprising a rotor shaft (12) on which a rotor packet (14) with magnets is received. The rotor shaft (12) is equipped with at least one balancing ring (20, 22) which is connected to the rotor shaft (12) and the rotor packet (14) in a rotationally secured manner. A centering element (26) for centering with the rotor packet (14) is provided on the balancing ring (20, 22). The rotor packet (14) together with the balancing rings (20, 22) is preferably electrically insulated from the rotor shaft (12) by an electric insulation (24). The invention further relates to a method which is suitable for producing such a rotor (10).
H02K 1/30 - Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
H02K 9/06 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
The invention relates to a tool device which is suitable for use with a machine tool, in particular a hand guided machine tool, having a driving device moving, in particular in an oscillating manner, around a driving axis. The tool device has an attachment device which allows it to be fastened on a machine tool such that its driving axis and an axis of rotation of the tool substantially coincide. The attachment device, for absorbing the driving force, has at least two driving area regions, which are spaced apart from said tool axis of rotation and each has a plurality of surface points. The tangent planes to said surface-area points are inclined in regard to an axial plane, which encloses the tool axis of rotation. Furthermore, said tangent planes are inclined regard to a radial plane which extends perpendicularly to the tool axis of rotation. This means that the torque introduced into the tool device by the machine tool, via the driving device, is reliably absorbed.
B23B 31/10 - Chucks characterised by the retaining or gripping devices or their immediate operating means
B24B 23/04 - Portable grinding machines, e.g. hand-guidedAccessories therefor with oscillating grinding toolsAccessories therefor
B24B 45/00 - Means for securing grinding wheels on rotary arbors
B27B 5/30 - Sawing machines working with circular saw bladesComponents or equipment therefor DetailsComponent partsAccessories for mounting or securing saw blades or saw spindles
B27B 5/32 - Devices for securing circular saw blades to the saw spindle
B23D 61/00 - Tools for sawing machines or sawing devicesClamping devices for these tools
The invention relates to a method for producing a saw tool (10a) comprising a securing region (12) for securing to a drive spindle and comprising an operating region (14) on which at least one blade (16) is provided. The method has the following steps: (a) providing a steel sheet which can be martensitically hardened; (b) detaching a blank from the steel sheet; (c) providing a press with a pressing tool for press-hardening the blank; (d) heating the blank to a temperature above the austenitization temperature; and (e) feeding the blank into the pressing tool and press-hardening the blank, wherein the blank is hardened at least in the region of the blank blade(s) (16).
Disclosed is an oscillatingly driven machine tool including a tool spindle that is mounted pivotably about its longitudinal axis, further including a drive motor that is coupled to a hydraulic generator for generating an oscillating fluid flow which drives a hydraulic motor being configured as a rotor blade motor. The rotor blade motor drives the tool spindle in such a way that the tool spindle rotates oscillatingly about its longitudinal axis. The rotor blade motor includes symmetrically arranged rotor blades that are disposed at regular angular distances with respect to each other.
B23D 47/12 - Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts of drives for circular saw blades
B23Q 5/06 - Driving main working members rotary shafts, e.g. working-spindles driven essentially by fluid pressure or pneumatic power
B24B 23/04 - Portable grinding machines, e.g. hand-guidedAccessories therefor with oscillating grinding toolsAccessories therefor
B24B 47/12 - Drives or gearings for grinding machines or devicesEquipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
B24B 47/14 - Drives or gearings for grinding machines or devicesEquipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by liquid or gas pressure
B25F 5/00 - Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
B24B 47/16 - Drives or gearings for grinding machines or devicesEquipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces performing a reciprocating movement, e.g. during which the sense of rotation of the working-spindle is reversed
B23Q 5/027 - Driving main working members reciprocating members
F15B 15/12 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the oscillating-vane or curved-cylinder type
a) that are arranged at a distance from said output shaft and each have a multiplicity of surface points. Here, the tangent planes to said surface points are inclined in regard to an axial plane which includes said output shaft. Furthermore, the tangent planes are inclined in regard to a radial plane which extends perpendicularly to the output shaft. In this way, the output torque is transmitted reliably to the tool device by the machine tool via the tool receiving device.
The invention relates to a machine tool, in particular a hand held machine tool, which has a tool-accommodating device which can be moved, in particular in oscillating fashion, about a drive axis, in order to retain a tool device on the machine tool. The tool-accommodating device has at least one clamping device, at least one retaining device and at least one locking device. The retaining device can be moved from at least one first, open position into at least one second, closed position. It is also the case that the retaining device can be forced by a clamping force, by way of the clamping device, preferably in the closing direction from said first, open position in the direction of said second, closed position. The locking device can be moved between at least one first, locking position and at least one second, unlocking position. It is possible here for said locking device to block movement of the retaining device in at least one locking position. A force applied to the locking device directly or indirectly by the tool device moves said locking device from one of said locking positions into one of said unlocking positions. This allows the tool device to be inserted particularly quickly and straightforwardly into the machine tool.
B23B 31/103 - Retention by pivotal elements, e.g. catches, pawls
B23B 31/18 - Chucks with simultaneously-acting jaws, whether or not also individually adjustable pivotally movable in planes containing the axis of the chuck
B24B 23/02 - Portable grinding machines, e.g. hand-guidedAccessories therefor with rotating grinding toolsAccessories therefor
B24B 45/00 - Means for securing grinding wheels on rotary arbors
B27B 19/00 - Other reciprocating saws with power driveFret-saws
B24B 23/04 - Portable grinding machines, e.g. hand-guidedAccessories therefor with oscillating grinding toolsAccessories therefor
B23B 31/10 - Chucks characterised by the retaining or gripping devices or their immediate operating means
A positioning aid is disclosed for a core drilling machine, having a core drill for creating a hollow-cylindrical drill hole. The positioning aid includes a light source for creating a centring pattern on a workpiece. The positioning aid is fastened in a releasable and centered manner to the core drilling machine. The positioning aid may include a laser pointer, which is releasably fastened to a centring pin.
B23B 49/00 - Measuring or gauging equipment on boring machines for positioning or guiding the drillDevices for indicating failure of drills during boringCentring devices for holes to be bored
B23Q 17/24 - Arrangements for indicating or measuring on machine tools using optics
B25H 1/00 - Work benchesPortable stands or supports for positioning portable tools or work to be operated on thereby
G01C 15/00 - Surveying instruments or accessories not provided for in groups
B23Q 15/22 - Control or regulation of position of tool or workpiece
B23Q 3/18 - Devices holding, supporting, or positioning, work or tools, of a kind normally removable from the machine for positioning only
B23B 51/04 - Tools for drilling machines for trepanning
B23Q 17/22 - Arrangements for indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work
An impact screwdriver having a housing includes an impact mechanism including a hammer interacting with an anvil for driving a tool, wherein the hammer is arranged on a drive shaft so as to be axially movable and preloaded in the axial direction, and wherein the hammer is driven by the drive shaft via a driver and is preloaded counter to the force of a spring element in order to trip and to transmit a rotary impulse to the anvil when a particular rotation angle is exceed, wherein the hammer and the anvil are mounted in a manner electrically insulated from one another and are connected to a voltage source, and wherein a sensor is provided for monitoring a current flow between the hammer and anvil during contact thereof for determining a contact duration between the hammer and anvil.
B25B 23/147 - Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for electrically operated wrenches or screwdrivers
B25B 21/02 - Portable power-driven screw or nut setting or loosening toolsAttachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket
96.
SERIES MOTOR, AND ELECTRIC TOOL COMPRISING A SERIES MOTOR
Disclosed is a series motor (10), in particular a single-phase series motor, comprising: a stator (16) and a rotor (12) that is mounted so as to be rotatable relative to the stator (16), the stator (16) being provided with a plurality of poles (28, 30, 36, 38, 40, 42) which are magnetically coupled to one another via a stator ring (26) and are designed to transmit a magnetic field to the rotor (12); a stator winding having a plurality of windings on the stator (16) in order to generate a magnetic exciting field; and a rotor winding (14) on the rotor (12) in order to generate a magnetic rotor field. The rotor winding (14) is electrically connected to the stator winding (18) in series, and the number of turns of the stator winding (18) is smaller on a first pole (30, 38, 42) than the number of turns thereof on a second pole (28, 36, 40).
H02K 23/04 - DC commutator motors or generators having mechanical commutatorUniversal AC/DC commutator motors characterised by arrangement for exciting having permanent magnet excitation
H02K 23/08 - DC commutator motors or generators having mechanical commutatorUniversal AC/DC commutator motors characterised by arrangement for exciting having series connection of excitation windings
The invention relates to an electric tool comprising an electric motor with an armature shaft (22) on which an eccentric element (24) is received for the purpose of driving an oscillating drive; and an armature core (36) which is received on said armature shaft (22) and has a plurality of teeth (38) that are each separated from one another by grooves (39), said eccentric element having an angular alignment relative to the armature shaft (22) such that a straight line (44) connecting a central axis (42) of the eccentric element (24) to a central axis (40) of the armature shaft (22) runs through a tooth (38) of said armature core (36).
The invention relates to a random orbital sander (10) comprising an eccentric drive (24) for driving a tool-receiving socket (48), to which a sanding tool (20) can be secured. The sander is provided with a rotary drive (22), which is mechanically coupled to the eccentric drive (24) for driving the tool-receiving socket (20), in order to produce a movement of the tool-receiving socket which results from the eccentric movement and the rotary movement. Preferably, the rotary drive (22) and the eccentric drive (24) can be controlled independently of one another.
B24B 23/03 - Portable grinding machines, e.g. hand-guidedAccessories therefor with rotating grinding toolsAccessories therefor the tool being driven in a combined movement
99.
FRICTION BEARING BETWEEN ROTOR AND ANVIL IN AN IMPACT WRENCH
The invention relates to an impact wrench (100) comprising: - a housing (110); - a motor-driven driveshaft (120); - an output shaft (130) for securing a tool, and - a percussion mechanism (140) which couples the driveshaft (120) to the output shaft (130) in order to transmit a torque. A first bearing torque is provided between the output shaft (130) and the housing (110), said bearing torque acting opposite the rotational direction of the output shaft (130), and a second bearing torque is provided by the percussion mechanism (140) between the output shaft (130) and the driveshaft (120) when the driveshaft (120) is not coupled to the output shaft (130), said bearing torque acting opposite the rotational direction of the drive shaft (120). The invention is characterized in that the first bearing torque is smaller than the second bearing torque.
B25B 21/02 - Portable power-driven screw or nut setting or loosening toolsAttachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket
According to the present invention, there is provided a gravity-feed liquid delivery system for a machine tool. A liquid reservoir has an attachment mechanism to attach the reservoir to a structure separate from the machine tool. Coolant contained in the reservoir is transmitted by a hose having a first end combined to the liquid reservoir and a second end attachable to the machine.
B23Q 11/10 - Arrangements for cooling or lubricating tools or work
B23Q 9/00 - Arrangements for supporting or guiding portable metal-working machines or apparatus
B23B 45/14 - Means for holding or guiding the drilling device or for securing it to the workThrust stands
B23C 1/06 - Milling machines not designed for particular work or special operations with one vertical working-spindle
B23B 45/00 - Hand-held or like portable drilling machines, e.g. drill gunsEquipment therefor
F16N 7/02 - Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with gravity feed or drip lubrication
