A method and tooling for forming a cartridge case blank comprising backward extruding a tube from a length of wire stock in multiple backward extrusion steps with progressive tooling to obtain an intermediate blank that can be finish drawn without a preceding annealing step and which if otherwise not subjected to multiple backward extrusion steps, would require annealing prior to finish drawing to avoid tearing.
A method and tooling for forming a cartridge case blank comprising backward extruding a tube from a length of wire stock in multiple backward extrusion steps with progressive tooling to obtain an intermediate blank that can be finish drawn without a preceding annealing step and which if otherwise not subjected to multiple backward extrusion steps, would require annealing prior to finish drawing to avoid tearing.
A progressive former having a bolster and a ram reciprocal towards and away from the bolster, a plurality of workstations evenly spaced across the bolster and ram including aligned tooling piece holders on the bolster and ram, cylindrical die cases in the tooling holders on the bolster and cylindrical tool cases in the tooling holders on the ram, the tooling cases at the workstations being coaxial, a sideways forming mechanism at one of said workstations, the mechanism including a cam and a cam follower radially outward of imaginary outward projections of the associated tooling cases, the cam follower being arranged to be activated by forward motion of the ram towards the bolster, the mechanism including a tool for forming the blank by applying a sideways force on the blank.
A progressive cold forming machine and a robot for automatically changing a cutoff cassette, tooling cassettes, a transfer slide and transfer cam. A loading area adjacent the machine and robot has provisions for supporting a tooling cassette pallet and a transfer slide and camshaft pallet and a holding area for temporarily receiving some of the componentry being exchanged.
B21J 13/08 - Accessoires pour la manipulation des pièces ou des outils
B23Q 3/155 - Agencements pour insérer ou retirer automatiquement les outils
B21D 37/04 - Montage mobile ou interchangeable des outils
B21D 43/05 - Avancement du matériau en fonction du mouvement de la matrice ou de l'outil au moyen d'un élément mécanique coopérant avec le matériau spécialement adapté aux presses à étages multiples
B21K 27/04 - Dispositifs d'alimentation pour barres, fils ou bandes permettant une succession de phases de travail
B21J 9/02 - Réalisations ou structures particulières
B30B 15/02 - MatricesGarnitures ou montures appropriéesMoules
B21D 37/14 - Aménagements particuliers pour manipuler et maintenir en place les matrices complètes
An impact cutoff device for a progressive high speed cold former having a low mass rigid cutter carriage, a torsion spring for carriage return, and an articulated, oil lubricated and dampened carriage drive block on a pivoting drive lever serving to reduce impact induced vibration otherwise leading to fatigue failure and wear of the various cutter parts and consequent loss of cutoff accuracy and quality.
A progressive cold forming machine and a robot for automatically changing a cutoff cassette, tooling cassettes, a transfer slide and transfer cam. A loading area adjacent the machine and robot has provisions for supporting a tooling cassette pallet and a transfer slide and camshaft pallet and a holding area for temporarily receiving some of the componentry being exchanged.
B21J 13/08 - Accessoires pour la manipulation des pièces ou des outils
B23Q 3/155 - Agencements pour insérer ou retirer automatiquement les outils
B21D 37/04 - Montage mobile ou interchangeable des outils
B21D 43/05 - Avancement du matériau en fonction du mouvement de la matrice ou de l'outil au moyen d'un élément mécanique coopérant avec le matériau spécialement adapté aux presses à étages multiples
B21K 27/04 - Dispositifs d'alimentation pour barres, fils ou bandes permettant une succession de phases de travail
B21J 9/02 - Réalisations ou structures particulières
B30B 15/02 - MatricesGarnitures ou montures appropriéesMoules
B21D 37/14 - Aménagements particuliers pour manipuler et maintenir en place les matrices complètes
A progressive forming machine having a frame supporting a plurality of workstations uniformly spaced in a horizontal plane, a transfer mechanism for shifting parts from one station to another and from a last station to a discharge station, a conveyor in the frame for lowering parts from the transfer discharge station, the conveyor having individual part carriers, the conveyor being arranged to present a carrier beneath the discharge station in timed relation to the operating cycle of the machine.
B65G 17/12 - Transporteurs comportant un élément de traction sans fin, p. ex. une chaîne transmettant le mouvement à une surface porteuse de charges continue ou sensiblement continue, ou à une série de porte-charges individuelsTransporteurs à chaîne sans fin dans lesquels des chaînes constituent la surface portant la charge comprenant une série de porte-charges individuels fixés ou normalement fixés à l'élément de traction
B65G 47/52 - Dispositifs pour transférer objets ou matériaux entre transporteurs, p. ex. pour décharger ou alimenter
B65G 47/64 - Changement de voies des transporteurs
B21C 35/00 - Enlèvement des produits travaillés ou des déchets des presses d'extrusionÉjection des produits extrudésNettoyage des matrices, des filières, des conteneurs ou des mandrins pour extrusion du métal
B21K 27/00 - Dispositifs de manutention, p. ex. d'alimentation, d'alignement, de déchargeMoyens de coupeAgencement de ces moyens
B21J 9/02 - Réalisations ou structures particulières
An improved cartridge case completely produced net shape on a progressive cold former that includes a trim to lengthy station with an internal shearing tool.
B21J 5/02 - MatriçageÉbarbage par utilisation de matrices particulières
B21D 51/54 - Fabrication d'objets creux caractérisés par l'usage de l'objet des douilles, p. ex. pour munitions, pour cartouches de correspondance dans les systèmes pneumatiques
B21K 21/04 - Formage d'articles creux à parois minces, p. ex. cartouches
B23D 21/14 - Machines ou dispositifs pour le cisaillage ou le tronçonnage de tubes découpage de tubes de l'intérieur
B23P 15/22 - Fabrication d'objets déterminés par des opérations non couvertes par une seule autre sous-classe ou un groupe de la présente sous-classe de cartouches ou corps cylindriques équivalents
A progressive forming machine with die and tool units, one of said units sliding a limited distance along its axis and biased by a spring force towards the other unit, the units each having an end face with a smooth surface finish adapted to press against the smooth surface finish of the end face of the other unit, the end face area of one of the units being relatively small compared to its major cross-sectional area whereby a high contact pressure between the end faces is obtained for a given spring bias force such that extrusion/cooling oil coating a workpiece received in cavity portions is restrained from leakage from the cavity portions across said end faces during a hydrostatic trapped extrusion shaping the workpiece to a degree beyond limits of conventional cold-forming processes.
A method of improving the surface finish of a sheared end face of a cylindrical blank in a progressive forming machine comprising deforming the end face out of its original as sheared transverse plane into a first shape concentric with the axis of the blank that slightly departs from the original plane a distance that increases with proximity to the axis of the blank, thereafter deforming the end face from the first shape into a second shape in a direction opposite a direction the first shape was displaced from the original shear plane, the second shape slightly departing from a transverse plane a distance that increases with proximity to the axis of the blank.
B21J 1/04 - Façonnage des pièces brutes par forgeage ou pressage uniquement
B21D 3/10 - Redressage ou remise en forme des barres, tubes ou profilés métalliques, ou des objets déterminés faits à partir de ces matériaux, qu'ils comportent ou non des parties en tôle entre des marteaux et des enclumes ou butées
A method of improving the surface finish of a sheared end face of a cylindrical blank in a progressive forming machine comprising deforming the end face out of its original as sheared transverse plane into a first shape concentric with the axis of the blank that slightly departs from the original plane a distance that increases with proximity to the axis of the blank, thereafter deforming the end face from the first shape into a second shape in a direction opposite a direction the first shape was displaced from the original shear plane, the second shape slightly departing from a transverse plane a distance that increases with proximity to the axis of the blank.
B21J 1/02 - Traitement préliminaire des matériaux métalliques sans mise en forme particulière, p. ex. conservation des propriétés physiques de certaines zones, forgeage ou pressage des pièces à l'état brut
B21J 9/02 - Réalisations ou structures particulières
B21F 1/00 - Cintrage des fils métalliques autre que l'enroulementRedressage des fils métalliques
A method and apparatus for forming metal parts in a progressive forming machine wherein one of the opposed tools on a ram and die breast is spring biased to operatively close the tools before the ram reaches front dead center thereby allowing material of the blank to extrude sideways through an aperture formed by both of the opposed tools in the final forward movement of the ram.
B21J 5/02 - MatriçageÉbarbage par utilisation de matrices particulières
B21D 51/14 - Aplatissage des objets creux pour le transport ou le stockageRemise en forme de ces objets
B30B 3/02 - Presses caractérisées par l'emploi d'organes de pression rotatifs, p. ex. rouleaux, anneaux, disques les organes rotatifs coopérant avec un organe fixe
B21J 9/02 - Réalisations ou structures particulières
B21D 19/08 - Mise en forme ou autres traitements des bords, p. ex. des bords des tubes par l'action unique ou successive d'outils presseurs, p. ex. de mors d'étaux
B21C 23/00 - Extrusion des métauxExtrusion par percussion
B21C 23/18 - Fabrication de produits non revêtus par extrusion par percussion
An improved cartridge case completely produced net shape on a progressive cold former that includes a trim to lengthy station with an internal shearing tool.
B21D 51/54 - Fabrication d'objets creux caractérisés par l'usage de l'objet des douilles, p. ex. pour munitions, pour cartouches de correspondance dans les systèmes pneumatiques
B21D 22/02 - Estampage utilisant des dispositifs ou outils rigides
An improved cartridge case completely produced net shape on a progressive cold former that includes a trim to lengthy station with an internal shearing tool.
B21D 51/54 - Fabrication d'objets creux caractérisés par l'usage de l'objet des douilles, p. ex. pour munitions, pour cartouches de correspondance dans les systèmes pneumatiques
B21K 21/04 - Formage d'articles creux à parois minces, p. ex. cartouches
B23P 15/22 - Fabrication d'objets déterminés par des opérations non couvertes par une seule autre sous-classe ou un groupe de la présente sous-classe de cartouches ou corps cylindriques équivalents
A set of tooling for a progressive forming machine comprising die and tool units having internal complementary cavity portions for receiving a workpiece, one of said units being arranged to slide a limited distance along its axis and to be biased by a spring force towards the other unit when the units are mounted in the forming machine, the units each having an end face with a smooth surface finish adapted to press against the smooth surface finish of the end face of the other unit, the end face area of one of the units being relatively small compared to its major cross-sectional area whereby a high contact pressure between the end faces is obtained for a given spring bias force such that extrusion/cooling oil coating a workpiece received in the cavity portions is restrained from leakage from the cavity portions across said end faces during a hydrostatic trapped extrusion of the workpiece in the die and tool units whereby the die and tool units are capable of shaping the workpiece to a degree beyond limits of conventional cold-forming processes.
In a multi-station forging machine having a stationary die breast and a reciprocating slide moveable in a direction towards and away from the die breast, the slide carrying a tool holder at a workstation, a tool case moveable back and forth on the tool holder in the direction of slide movement, tool segments carried in the tool case and moveable between open and closed positions, a pivotal lever carried on the slide having one portion engaging a rearwardly facing surface adjacent a rear of the tool case, a pivot surface around which said lever pivots, and another portion on a part of the lever extending from the pivot surface remote from the one portion, a high force spring mounted on the die breast, the spring being arranged to apply a high biasing force to said other lever portion when the slide is near or at front dead center, the lever transferring said biasing force to said tool case to bias said tool case forwardly.
A method and apparatus for detecting a turned blank at a workstation in a progressive forging machine comprising simultaneously monitoring both the force on a tool in the workstation and the crank angle of the machine, determining a reference crank angle when the tool is subjected to a force at the workstation about to deliver a blow and a blank in the workstation is properly angularly aligned, operating the machine to forge blanks in a normal manner when a force on the tool at the workstation occurs substantially at the reference crank angle, and interrupting said normal manner when the force on the tool at the workstation occurs before said reference crankshaft angle to enable the blank being formed at the workstation to be separated from remaining blanks being forged in the machine.
B30B 15/14 - Commande des presses actionnées mécaniquement
B21D 55/00 - Dispositifs de sécurité protégeant la machine ou l'opérateur, spécialement adaptés aux appareils ou machines couverts par la présente sous-classe
B21B 37/00 - Dispositifs ou procédés de commande spécialement adaptés aux laminoirs ou aux produits laminés
B21D 43/05 - Avancement du matériau en fonction du mouvement de la matrice ou de l'outil au moyen d'un élément mécanique coopérant avec le matériau spécialement adapté aux presses à étages multiples
A set of tooling for making pointed headed bolts of a given diameter in numerous lengths with roll thread ready threaded to the head and partially threaded shanks in a four forming station forming machine, the tools being configured to work on wire stock as received at the first station of a diameter larger than or substantially the same as the roll diameter and not greater than the nominal diameter of the bolt, including at least two sequential head forming tools for mounting on the slide, an extrusion pointing tool for mounting on the die breast, a roll diameter extrusion tool for mounting on the die breast and a head support tool mountable in a station on the slide at multiple axial positions corresponding to standard lengths of the bolts being made, the head support tool being arranged to work at either the extrusion pointing station or the roll diameter extrusion station.
A machine, method and tooling to precision cold-form roller blanks for anti-friction bearings. The machine is a multistage progressive former using floating die cavities to enable simultaneous shaping of the ends of the roller with high accuracy and without flash. The tools and staged forming create an improved roller with an advantageous grain pattern and devoid of structural defects previously attributable to the presence of sheared end face material in the radiused corners of the blank and flash at its mid-section.
