Abstract: A stamping apparatus is provided for producing an ammunition tray from metal sheet template with interleaving parallel cutouts in conjunction with a shop press. The apparatus includes upper and lower tray dies, upper and lower binders, and a pair of bolsters. Each die has opposite external and internal sides. The external side has a depression pocket. The internal side has a die impression to shape the template. Each binder has a cavity. The tray dies are disposed between the binders. The bolsters are disposed for engaging the shop press to apply compressive force. Each bolster correspondingly inserts through the cavity and into the depression pocket. The template is disposed between lower and upper internal sides of respective the dies. The shop press applies compression to the bolsters for stamping the template by the dies into the ammunition tray.

Abstract: A guidewire retraction device having a first support structure located opposite a second support structure. The first support structure has a primary bore traversing the length of the first support structure. The first support structure has a first opening bordering a first ramp. The first ramp is connected to the primary bore. A second support structure has a secondary bore traversing the length of the second support structure. The second support structure has a second opening bordering a second ramp. The second ramp is connected to the secondary bore. The first ramp of the first support structure and the second ramp of the second support structure are configured to receive a guidewire. A rotation element is rotated in a first direction to orient the guidewire in a retracted orientation. The rotation element is rotated in a second direction to orient the guidewire in an advanced orientation.

Abstract: According to one embodiment, a stabilizer manufacturing device includes a first forming unit and a second forming unit. The first forming unit includes a first forming mandrel, a holding member and a first bending roller. The first forming mandrel includes a first forming portion having an arc shape when viewed from above, and a support portion which supports a workpiece. The first bending roller moves along the first forming portion. The second forming unit includes a second forming mandrel, a holding member and a second bending roller. The second forming mandrel includes a second forming portion having an arc shape when viewed from above, and a support portion which supports the workpiece. The second bending roller moves along the second forming portion.

Abstract: A guidewire retraction device having a first support structure located opposite a second support structure. The first support structure has a primary bore traversing the length of the first support structure. The first support structure has a first opening bordering a first ramp. The first ramp is connected to the primary bore. A second support structure has a secondary bore traversing the length of the second support structure. The second support structure has a second opening bordering a second ramp. The second ramp is connected to the secondary bore. The first ramp of the first support structure and the second ramp of the second support structure are configured to receive a guidewire. A rotation element is rotated in a first direction to orient the guidewire in a retracted orientation. The rotation element is rotated in a second direction to orient the guidewire in an advanced orientation.

Abstract: Disclosed is a die for a press brake including a base, a first half portion and a second half portion of a mold, each including a plurality of plates parallel to one another and alternated in a longitudinal direction of the die, the die including a translation device to move the half portions away from and toward each other, the device including a plurality of guides obtained on the plates, a shaft slidingly engaged with the guides, a first pinion and a second pinion mounted on the shaft and at least a first rack and at least a second rack respectively on a first plate of the first half portion and on a second plate of the second half portion and meshed respectively with the first and second pinion.

Abstract: A wire forming apparatus comprises a first rack moveable relative to a second rack in a first direction. Multiple forming structures are provided on the first rack and the second rack. The plurality of forming structures include a first plurality of forming structures configured to move relative to the first rack in a second direction, and a second plurality of forming structures configured to move relative to the second rack in the second direction. A plurality of are actuators are configured to move the first rack relative to the second rack, move the first plurality of forming structures relative to first rack, and move the second plurality of forming structures relative to the second rack.

Abstract: The application of image transfer paper and a wrap to a curved surface of a container is described. A device for affixing the image transfer paper and wrap includes a base, a support member to support the container, and two wrap applicator arms coupled to the base in a pivoting manner. The support member includes a shoulder and, when the container is placed upon the support member, an edge of the container around an opening of the container rests upon the shoulder and a perimeter of the shoulder extends beyond a perimeter of the edge of the container. The shoulder receives the image transfer paper and aligns the image transfer paper with the edge of the container. Each wrap applicator arm is configured to receive a respective end of the wrap. Rotating the wrap applicator arms about the support member stretches the wrap around the container and image transfer paper.

Abstract: A curvature retaining device (1) includes two support points (25a) that can abut against one surface of a plate-shaped workpiece W, one or more pressing points (40a) that can abut against a position of the other surface of the plate-shaped workpiece (W) between the support points (25a), and forward/backward drive means (support unit (23) and pressing unit (33)) for moving at least either the support points (25a) or the pressing points (40a) forward to and backward from the other. Preferably, the two support points (25a) abut against the one surface of the plate-shaped workpiece (W) at a first distance (Ls), the two pressing points (40a) abut against the other surface of the plate-shaped workpiece (W) at second distance (Lp) shorter than the first distance (Ls), and a middle point of the first distance (Ls) and a middle point of the second distance (Lp) match with each other.

Abstract: A pre-forming apparatus (4) for an electrical bar conductor (8), comprising a punch (12) provided with moving members for exerting a thrust on the conductor (8) during the relative pre-forming, the punch (12) being axially sliding along a pre-forming direction (X-X) and being provided with a cursor (20) and with a pre-forming head (24) suitable for engaging with the conductor (8). The apparatus (4) comprises a first pre-forming chamber (44) suitable for being crossed by the conductor (8) and by the punch (12) during the forward movement of the punch (12) for the pre-forming operation.

Abstract: A method for hot-forming and hardening a sheet-metal component with flanges in a cooled forming tool and an apparatus for carrying out the method are disclosed. A heated sheet-metal blank is inserted in a forming tool having a hollow form, with the sheet-metal blank projecting over the hollow form in marginal regions. The sheet-metal component formed from the sheet-metal blank is hardening of in the hollow form. A first flange having an X-bending axis is formed in a first marginal region with an auxiliary tool, and a second flange having a Y-bending axis is formed in a second marginal region with the auxiliary tool. The auxiliary tool has a plurality of dies, and the X- and Y-bending axes are not collinear and may be orthogonal to each other. Bending axes with a substantially perpendicular mutual orientation can be produced simultaneously in a single forming step.

Abstract: An electric wire shaping apparatus includes a pair of male and female shaping dies and a pressing mechanism. Each of the male and female shaping dies has a shaping surface that includes a plurality of straight parts and a plurality of bent parts. The pressing mechanism moves one of the male and female shaping dies toward the other, thereby pressing a turn portion of an electric wire between the shaping surfaces of the male and female shaping dies in a width-wise direction of the turn portion. Furthermore, the male and female shaping dies are so configured that when they are located closest to each other, a gap W2 between a corresponding pair of the bent parts of the shaping surfaces of the male and female shaping dies is different in size from a gap W1 between a corresponding pair of the straight parts of the shaping surfaces.

Abstract: A method and a device for bending a metal hollow thick walled member to a predetermined angle without deviation of the bending center position and without separation from a half die when presser die moves up. With a pair of guide plates (GP1 and GP2) turnably attached to a center pin CP kept horizontal and the axis center of the center pin intersecting with the axis center of the metal hollow thick walled member PM, the member PM is mounted on a half die (82a). When die holding members (80a and 80b) fixedly connected to the above guide plates and kept horizontal are inclined and separated from each other as the center pin lowers, the member PM is bent to the predetermined angle and held on the half die (82b). When the center pin that can be moved vertically by a guide member moves down to a predetermined position, a contact portion (96b) contacts the inclined surface of a stopper (92b) to allow a base plate (16) to receive a pressing force from an upper die via the stopper.

Abstract: A method of measuring a length of sections of extrados or intrados curves of an elongated workpiece travelling in a bending machine along a forwarding direction, the elongated workpiece having cross-sections each of which is separated by a neutral axis in both an extended portion and a compressed portion when the elongated workpiece is subjected to bending, and at least a neutral cross-section, i.e. not subjected to bending, neutral cross-section beyond which the bending of the elongated workpiece begins along the forwarding direction thereof, provides a measuring instrument positioned so that it engages either an extrados or an intrados point of the elongated workpiece near the neutral cross-section, but displaced therefrom in the forwarding direction of the elongated workpiece. Further, a measuring instrument on a bending machine that embodies the method is described.

Abstract: A powered conduit bending tool comprises a portable drive housing including a handle and having a powered drive gear. A bracket is secured to the housing defining a pivot connection spaced from the drive gear. A guide is operatively secured to the housing. A platform is pivotally connected to the bracket at the pivot connection and includes a driven gear operatively engaging the drive gear to controllably pivot the platform. A shoe is removably mountable to the platform and comprises a first bender defining a downwardly opening arcuate channel selectively positionable proximate the guide. A hook is proximate one end of the bender for engaging a conduit received in the channel. In use, the guide supports a conduit engaged by the hook and pivotal movement of the shoe driven by the platform deforms the conduit as it passes by the guide.

Abstract: Devices, systems and methods are disclosed which relate to a wire bending apparatus capable of both on and off-plane nose and mandrel bends. Exemplary embodiments of the present invention incorporate a center turret cluster with a plurality of radii possible, a nose-bending mandrel, and a mandrel-bending mandrel. This apparatus forms a bending head that is attached to a CNC wire bending machine. This combination allows increased flexibility in forming complex wire forms and cuts down secondary operations, such as operations from robot arms, sometimes associated with CNC wire bending. In addition, the turret cluster position in the center allows for bending support with mandrel bends or nose bending on the back side of the bending head, usually 180 degrees away from the normal bending area. This allows the manufacturing of double end-loop forms without the addition of external clamps or robotic manipulation.

Abstract: A pipe bending shoe including a support frame, a pipe channel defined by a first bending frame connected with the support frame and by a second bending frame connected with the support frame, and a plurality of flexible straps spaced along the pipe channel and spanning the pipe channel transversely between the first bending frame and the second bending frame in order to provide a transversely segmented pipe sling, wherein the pipe sling maintains a constant convex longitudinal sling profile during bending of a pipe using the pipe bending shoe.

Abstract: A bottom tool/bending die for use in sheet metal forming. The bottom tool includes a pair of movable dies that provide substantially continuous support of a work piece as it is being deformed. Each die includes an upper surface configured to contact the work piece and having an inner and an outer edge. As the die moves in the tool, the inner edge of the upper surface is closer to a center of rotation of the die than the outer edge. In some embodiments, the upper surfaces of the dies are shaped so that a fixed separation is maintained between the inner edges of the dies as they rotate. In at least one embodiment, sector gears are used to control the motion of the dies.

Abstract: A propeller repair apparatus suitable for repairing and changing the pitch of a propeller includes a first rail parallel to and spaced from a second rail. A tapered shaft extends upwardly between the first and second rails for mounting a propeller thereon. A first frame extending between the first and second rails is movably mounted on the first and second rails for movement along the first and second rails. In one embodiment, a first actuator is pivotally mounted to the first frame and includes an extendible ram engagable with a propeller mounted on the tapered shaft.

Abstract: The invention is a machine, machine system, and method of using a machine that alters metal plates to enable rigid stacking of the metal plates. In a preferred embodiment, the machine system includes a machine cabinet, a first altering system secured in the machine cabinet and configured to enable the machine to produce a divot or other indention in a metal plate, and a second altering system secured in the machine cabinet, the second altering system being configured to interact with the first altering system to change the shape of a metal plate, such as by bending a corner.

Abstract: A suspension component for an automobile, such as a stabilizer bar, is provided and includes at least one localized portion having a strengthened outer surface. The localized portion is positioned at a location of highest stress along the suspension component. A method of forming the suspension component is also disclosed.

Abstract: An apparatus and method for forming corrugated contours in a sheet are provided. The apparatus includes at least three pairs of elongate dies that extend in a longitudinal direction. Each pair of dies is generally parallel and defines a nip therebetween so that the sheet can be moved successively through the nips. At least one actuator is configured to actuate each pair of dies in successively opposed directions generally perpendicular to a direction of motion of the sheet to thereby form the contours in the sheet. Further, each pair of dies is adjustable in a transverse direction generally parallel to the direction of motion of the sheet so that an offset distance between each successive pair of dies can be adjusted.

Abstract: One-step offset bender for speed and accuracy in offsetting pipe or other materials. The offset bender (100) includes a base (110) on which is mounted a fixed shoe support (130) and a traveling shoe support (160). The fixed shoe support fixedly holds a first shoe assembly (200), and the traveling shoe support holds a second shoe assembly (200′) that can be moved vertically and horizontally. The offset bender simultaneously produces two, aligned, equal and opposite bends in conduit by pressing down on the second shoe assembly (200′). The conduit shoe assemblies include a plurality of conduit shoes that can be selectively aligned to accommodate the desired conduit. The fixed shoe support is pivotally attached to the base, and the traveling shoe support is removable, such that the bender may be folded for easy transport. A motor (361) or other power system may be used to facilitate making the bend.

Abstract: One-step offset bender for speed and accuracy in offsetting pipe or other materials. The offset bender (100) includes a base (110) on which is mounted a fixed shoe support (130) and a traveling shoe support (160). The fixed shoe support fixedly holds a first shoe assembly (200), and the traveling shoe support holds a second shoe assembly (200′) that can be moved vertically and horizontally. The offset bender simultaneously produces two, aligned, equal and opposite bends in conduit by pressing down on the second shoe assembly (200′). The conduit shoe assemblies include a plurality of conduit shoes that can be selectively aligned to accommodate the desired conduit. The fixed shoe support is pivotally attached to the base, and the traveling shoe support is removable, such that the bender may be folded for easy transport. A motor (361) or other power system may be used to facilitate making the bend.

Abstract: According to one embodiment of the invention, a system for bending a structural member includes a base, a pair of pivot plates rotationally coupled to the base, an actuator coupled between the pair of pivot plates, and a plurality of adjustable supports adjustably coupled to the pair of pivot plates. The adjustable supports are adjustable in a transverse direction, and are operable to bend the structural member through a rotation of the pivot plates.

Abstract: A method and apparatus for manufacturing a thick-walled bent pipe capable of manufacturing an elbow material for piping with higher size accuracy with use of a thick-walled pipe material are provided.

Abstract: A method for forming a folded fin includes at least the following steps: providing a horizontal metallic strip; forming number of pairs of indents alternately in a top face and a bottom face of the strip; clamping the strip with three folding tools, wherein a first tool is located between a first pair of indents in the top face of the strip, a second tool is located between a successive second pair of indents in the bottom face of the strip and a third tool is located between a fuirther successive third pair of indents in the top face of the strip; and moving the second and third tools toward the first tool to a position where parts of the strip between the first and second tools and between the second and third tools are bent to be vertical, wherein the third tool moves horizontally toward the first tool and the second tool moves at an angle toward an upper side of the first tool.

Abstract: A folding apparatus (10) includes a pair of dies (20) defining a recess (20M) therebetween, a cushion pad (30) vertically movable in the recess, a pair of support blocks (40), a pair of pivoting blocks (50) rotatable about the dies, and a vertically movable punch (60). The thickness of each pivoting block is substantially equal to the distance between the cushion pad and each die. Each pivoting block defines a groove (52) in an inner surface, for shifting the center of gravity outwardly. Each support block includes a horizontal portion (42) secured under the cushionpad, an inclined portion (46), and a shoulder (44) between the horizontal portion and the inclined portion.

Abstract: The method of bending the long length of the member and a bending apparatus which are capable of restraining the occurrence of wrinkles in flanges of the long length of the member, preventing free end sides of the flange of the long length of the member, preventing free end sides of the flanges from buckling, and setting and taking out the long length of the member easily in bending a long length of a member in the longitudinal direction, which is approximately L-shaped or U-shaped in cross section and has a platelike bottom portion and flanges installed in a standing manner at the end of the platelike bottom portion, it is to provide.

Abstract: A method for making a folded fin for a heat sink comprises the steps of: preparing a metal plate; clamping the metal plate with three forming jigs in an initial position, the lower jig portion of the second forming jig having a tapered end; actuating the second forming jig to upwardly move toward the first forming jig at a specified angle and the third forming jig to horizontally move toward the first forming jig to a second position where a portion of the metal plate between the forming jigs has been bent into a pair of symmetrically inclined sections; and actuating the lower jig portion of the second forming jig to downwardly move away from the metal plate at a specified angle, and the third forming jig and the upper jig portion of the second forming jig to continue moving toward the first forming jig to a final position where the pair of symmetrically inclined sections of the metal plate has been bent double thereby forming a folded fin.

Abstract: A method of manufacturing a U-shaped conductor segment which has a U-shaped head and a pair of legs includes setting a straight conductor wire of a prescribed length on the outer peripheries of a pair of parallel rollers, and pushing a bender against one side of the conductor wire opposite the rollers between the pair of rollers so that the conductor wire can be bent to allow the bender to pass between the pair of rollers.

Abstract: A press-forming die set including a first die and a second die which are linearly movable in a press-forming direction for mutual engagement to form a negative-angle portion on a workpiece placed on the second die, the press-forming die further including a rotary cam having a first negative-angle forming portion, and a forming cam having a second negative-angle forming portion. The first negative-angle forming portion is disposed such that the rotary cam is rotatable about an axis of rotation inclined with respect to a bottom surface of the workpiece. The rotary cam is engageable with the second die and is rotated about the axis of rotation in one of opposite directions when the first and second dies are moved toward each other, and is rotated in the other direction when the first and second dies are moved away from each other.

Abstract: In an apparatus for cold bending a metal sheet for making an elongated article with a predetermined pro-file, supports are provided to receive opposite ends of the sheet being formed. A form, whose cross section defines a predetermined profile, is operated perpendicularly with respect to its longitudinal axis, so as to clamp the sheet, resting on the supports, to a stop. Bending members are carried by two plates which are mounted for oscillating on a vertical plane transversal to the form, so that the bending members rotate around spindles parallel to the stop plate. The bending members are operated in time relation with a synchronous movement of the form and of the stop, so as to fold the two ends of the sheet piece over the form.

Abstract: A forming press for L-shaped and T-shaped workpieces includes first and second press members relatively movable toward and away from each other along a first direction, a first forming die carried by the first press member for engaging and deforming the workpiece to a desired shape when the press members are moved toward each other with the workpiece held therebetween, and a clamping assembly mounted on the second press member for clamping the leg of the workpiece to stabilize the workpiece during shaping thereof. The clamping assembly comprises at least one cam member fixed with respect to the second press member. The cam member defines a pair of spaced-apart cam surfaces oppositely inclined so as to form a channel that widens in the first direction toward the first press member. The clamping assembly further includes a pair of clamping members disposed within the channel so as to be movable along the first direction.

Abstract: An apparatus for straightening a U-shaped leaf spring wherein the spring includes a curved section having a concave side and a convex side and wherein the spring has a pair of elongated legs spaced-apart relationship with each other from the curved section of the spring and the curved section of the spring has a radius of curvature adjacent a side of the legs facing away from each other, the apparatus comprising a plurality of pivotal block members which simultaneously rotate counter to one another, each of the blocks having a channel disposed thereon adapted to receive one of the leaf spring legs therein and the channel having an outer wall facing toward the other block outer wall which extends away from the curved section of the leaf spring to a respective free end such that the combined lengths of the outer walls on both blocks are substantially the same length of the convex side of the curved section of the leaf spring; each block channel having a respective inner wall facing away from the inner wall of t

Abstract: A pipe bending machine includes a horizontal pipe support platform defining a horizontal pipe feed channel. A first pipe engaging member is positioned on a first side of the pipe feed channel. A second pipe engaging member and a third pipe engaging member are arranged in spaced relation on a second side of the pipe feed channel. Either the first pipe engaging member or the second pipe engaging member and third pipe engaging member are movable into the pipe feed channel, thereby exerting a bending force upon a pipe positioned in the pipe feed channel.

Abstract: Disclosed is a preferred embodiment of straightening apparatus (100) featuring a pair of adjacent rotary block members (8) and (8') having channels (30) and (30') respectively disposed therein for receiving spaced-apart legs (6) and (6') of a heated leaf springs folded into a substantially flat "U" shaped configuration as block members (8) and (8') are caused to rotate in unison in opposite directions, inner walls (12) and (12') of channels (30) and (30') respectively engage and urge legs (6) and (6') away from each other whilst outer walls (10) and (10') of channels (30) and (30') respectively are operative to engage and provide support for substantially the entire length of a convex side (26) of a curved section (24) of the folded leg spring effective to prevent warpage thereof during the straightening process.

Abstract: An automatic hydraulic system 10 for the actuation of the bending beds 101, 102 hinge plate 103 and pin up plate 104 of a pipe bending apparatus. The hydraulic system 10 includes a hydraulic control circuit unit 14 that controls the operation of a pin up hydraulic ram unit 11, a bending bed hydraulic ram unit 12, and a hinge plate hydraulic ram unit 13 in response to a pair of adjustable detent main control valves 81, 82 and a sequence valve 66, and adjustable hydraulic relief valve 59.

Abstract: There is disclosed a process and apparatus for producing reinforcement profiles on sheet metal panels wherein the profiles are obtained with the same metal sheet which constitutes the body of the finished shelf. The profiles are obtained by performing a drawing action so as to create a channel of inverted "C" shape and then performing a successive bending action capable of causing the reciprocal approach of the ends of its two parallel sides, obtaining, at the end of the operation, a shape in the form of an inverted isosceles triangle which constitutes the reinforcement profile.

Abstract: A universal positioning and support structure for tools usable by a machine for bending elongated elements such as tubes or profiled sections, includes at least one base body and a support platform for the tools. The support platform is movably mounted on the base body. The platform is capable of rotating circumferentially and for contemporaneously being displaced radially with respect to a pivot fixed to the base body.

Abstract: A coupling between the piston and cylinder controlling and actuating member and the bending head of a portable pipe bending machine comprising a collar (5) made up of two half collars (5', 5") with concavities complementary with the side wall of the cylinder (3), which are removably joined (6, 6') to each other to clamp the cylinder itself, one of them (5') being rigidly joined (6, 6') to the bending head (1), a coupling which is desired further comprises structure for preventing the axial displacement of the collar (5) upon the cylinder (3), particularly a groove (9', 9") on the collar and a complementary ridge (9) on the cylinder (3).

Abstract: A pipe bending machine is described which utilizes a cord and lattice support structure having a first end, a second end, an interior lattice framework and an exterior connecting cord which connects the periphery of the interior lattice framework. Pipe securing tie backs are secured to the support structure adjacent each of the first end and the second end. At least one pressure exerting hydraulic cylinder is secured to the support structure intermediate the first end and the second end. The hydraulic cylinder has a pressure member movable in relation to the support structure thereby exerting a bending force upon a pipe held by the pipe securing means. The bending force places the interior lattice framework in compression and the connecting cord in tension. The forces of compression and tension being off-setting thereby enabling the support structure to withstand the bending force.

Abstract: A pipe bending apparatus (10) for bending a section of pipe (100) at a desired location; wherein, the apparatus (10) comprises; a floating central hinge plate member (40) pivotally connected on opposite ends to a pair of bending bed members (30) which move the section of pipe (100) against a pipe bending template (50) in response to the actuation of a hydraulic unit (15) to produce a bend in the section of pipe.

Abstract: A sheet bending device (1) is described, comprising two bending punches (19, 20), pivotally connected together, which are disposed alongside each other in a frame (2), and of which at least one is pivotally mounted and is coupled to a pivoting drive (24), and comprising a counter-punch (10), situated opposite the bending punches (19, 20) and arranged to be linearly movable between a working position on the sheet (18) and a retracted position, about which counter-punch the sheet (18) is bent in the working position, wherein the two bending punches (19, 20) are articulated to each other or pivotally supported in the frame (2) in the working region itself.

Abstract: A tooling module for use in a stamping and forming machine comprises a tooling portion and an actuator portion. The actuator portion is fixed to a reciprocable ram and the tooling portion is slidably carried by the actuator portion. The tooling portion is normally spaced from to the actuator portion and is movable to an adjacent position. The tooling portion has forming tooling thereon for performing a bending or other operation on strip material. The actuator portion has an actuator such as a cam for moving the forming tooling when the module is moved by the ram against the strip on which forming operations are being carried out.

Abstract: An apparatus for bending and forming sheet metal into U-shaped channel members is comprised of a support block for supporting a blank of sheet metal in a centered position, a pair of rollers that engage in rolling contact against opposite ends of the sheet metal, and an anvil around which the sheet metal blank is formed into the U-shaped channel member. The sheet metal blank is formed over opposite sides of the anvil by the rollers engaging in rolling contact against the opposite ends of the sheet metal blank. As the rollers roll over the opposite ends of the sheet metal blank, they bend and form the sheet metal ends into channel bends having acute interior angles. When the rollers are removed from the sheet metal ends, the resiliency of the sheet metal causes the channel bends to spring back from their acute angle configurations to right angle configurations.

Abstract: A method and apparatus for shaping the winding end turns of a stator assembly wherein the outside diameter of the end turns is first engaged by a set of alternate segments in a circular array and is thereafter engaged by a set of intervening segments of the array while the first set remains engaged. The motion and configuration of the segments avoids the risk of pinching a wire of the winding by eliminating relative circumferential closing movement between adjacent segments. The inside diameter of the end turns is shaped by an expandable mandrel assembly that includes interengaged shoes that have a sliding movement in expansion and contraction that also avoids the risk of pinching strands of the winding.

Abstract: A device is provided for forming coils which are inserted into radially inwardly open slots of a stator or rotor plate pack of an electric machine. The device enables intermediate forming of coils disposed in specific slots in order to also allow insertion of the coils of a further winding in the same slots and thus allow free forming. The device comprises a holding device for the plate pack and a forming mandrel. The latter includes a plurality of radially extendable laminae distributed about the periphery thereof. Different groups of laminae can be extended by a predetermined radial path length by push rods which can be driven independently of one another in order to force outwardly, and form in certain slots, the coil strands that have been inserted into the slots. Further, forming rings which are axially movable relative to the plate pack are provided to enable forming of winding heads.

Abstract: Stamping and forming apparatus (54) has a bending station in which blanks (28,28'), which extend from the two side edges of strip material (4), are reversely bent (180) degrees in opposite directions so that the end portions (36a,36a') of the reversely bent blanks extend back towards the carrier strip (4). The apparatus has first and second tooling assemblies (86,86') which are on ram assemblies (72,72'). The ram assemblies move relatively towards and away from each other with the strip positioned (4) between the tooling assemblies. Each tooling assembly (86,86') has a mandrel (44,44') around which the blank (28,28') is bent and each tooling assembly has two bending sets of tooling therein, a primary bending set (46,46') and a secondary bending set (50/50') for bending the blank initially through a 90 degree angle and then completing the bending operation to form a 180 degree bend.

Abstract: A method and apparatus is provided for forming bends in a tube. A set of bend forming elements are mounted on each of a pair of parallel guideways. Each set of bend forming elements are interconnected by lazy tongs and a motor is provided to drive each set of bend forming elements along the guideways so that each set of bend forming elements may be moved together or separated while maintaining equal spacing between the elements. When a straight tube is placed between the sets of bend forming elements and the bend forming elements are driven together while the guideways simultaneously are driven apart, bends are formed in the tube to form the tube into a serpentine configuration. The bend forming elements have at least two different curvatures on their external surfaces so that the bends in the tube are formed in two stages with each of the different curvatures being sequentially operative to form the final bends in the tube.

Abstract: This invention relates to a die device for the die bending of metal plates (sheet), with two shafts (4, 5), supported rotatable around their lengthwise axis, flattened on one side, and arranged side by side, parallel lengthwise. In particular, in order to be able to produce even bending legs with a length less than the radius of the shaft, in the die device according to the invention, the rotation of the shafts in opposite directions is force-coupled by coupling mechanism (6-10).