Abstract: The press comprises a first generally-horizontal link (L1) below a second generally-horizontal link (L2). A third link (L3) extends down from the second link to the first link and carried a press tool (70) with a generally downwardly facing working surface. A fourth link (L4) is arranged to be driven by a first mechanism (DS, M2) to push the second link and thus the press tool generally forwards from a horizontally retracted start position to a horizontally advanced initial pressing position, after which the first mechanism is arranged to hold the position of the fourth link. A second mechanism (DS, C, L5) is arranged, when the position of the fourth link is being held, to pivot the first link to drag downwards the third link and thus drag the press tool generally downwards from the initial pressing position to a vertically lower final pressing position.

Abstract: A connecting rod unit is eccentrically supported on the drive shaft. The connecting rod unit is pivotally mounted via link members to double arm levers. Each double arm lever is pivotally mounted to a single arm lever. Furthermore, each single arm lever is coupled at its end remote from the double arm levers to a device for the adjusting of the height position of the ram. Each single arm lever supports a pressing column. These pressing columns are pivotally mounted to the ram. Accordingly, the structural members which transmit the driving force from the connecting rod unit to the pressing columns can be designed extremely stiff and with a minimal springiness. Also, all structural members located between the connecting rod unit and the ram, inclusive the ram, are designed in such a manner that no additional balancing forces for the vertical mass force balancing are needed.

Abstract: A support frame (14) is provided above a base (10), defining a working space (16) together with the support frame. An automatic die-replacing mechanism (24) is provided in the working space, for moving a selected one of a plurality of die units (78) to a predetermined working position. A support base table is provided with an elevating axle (18) for opening and closing the die unit located at the working position, and a drive mechanism section for moving the elevating axle up and down. The drive mechanism section has a pulse servomotor (38) and an oscillating-fulcrum mechanism (22) for transmitting a drive force to the elevating axle. The oscillating arm (46) of the oscillating-fulcrum mechanism has a fulcrum section supported by the support table, a power-point section supported by a shaft which is rotated by the pulse servomotor, and an application-point section coupled to the elevating axle.

Abstract: A slide-driving device for knuckle presses employs a side link affixed at a base end to the knuckle press, and pivoted at its outer end to a junction between links that drive the slide. The side link maintains a very small slope angle for the lower link, which raises and lowers the slide. The small slope angle prevents thrust force from being generated on the slide, and enables performing high-precision molding of products even with extrusion operations, where the molding is started from a position high above the bottom dead center of the slide. In one embodiment of the invention, the base end of the side link is rigidly affixed to the frame of the knuckle press. In a second embodiment of the invention, a bottom dead center compensation device adjusts the position of the outer end of the side link at bottom dead center to compensate for changes in the linkage.

Abstract: In a feeding mechanism 4 which reciprocates the feed arm 80 in a direction of transporting a lead frame, a movable body is linked via a second fulcrum 37 (movable fulcrum) with a rocking arm 30 which is pressingly contacted with a feed cam 11 and which rocks about a first fulcrum 31 (stationary fulcrum), rocking movement of the rocking arm 30 is converted into linear movement of the movable body which is directly coupled to reciprocal movement of the feed arm 80, and the distance between the first fulcrum 31 of the rocking arm 30 and the second fulcrum 37 is changed in the longitudinal direction of the rocking arm 30, thereby enabling a feed stroke of the feed arm 80 to be linearly changed.

Abstract: A mechanical press has a ram carried by a frame and movable to advanced and retracted positions by a ball screw assembly driven by a reversible motor to actuate a cam and follower assembly connected to the ram by a linkage system. The linkage system has a pair of pivot links pivotally connected at one end to a fixed pivot shaft connected to the press frame and connected at their opposite end to a follower nut for movement thereby as the follower nut travels along the length of the driven screw. A pair of roller followers are also driven by the follower nut to move between first and second positions within cam tracks formed in a pair of first lever arms operably connected to the ram. In use, when the motor drives the screw in one direction the first lever arms are rotated in one direction to move the ram to its advanced position wherein the ram urges a die or tool into engagement with a workpiece.

Abstract: Disclosed are a method and apparatus for manufacturing tubes, preferably tubes composed of high-tensile steels or special alloys, using the cold pilger rolling method with two rolling stands which can be moved backward and forward, at least in opposite directions at times and in the rolling direction by means of crank drives. The rolling stands have rollers which are calibrated in a tapering manner and which, driven by toothed racks via cogs, roll over the material to be rolled, with an alternating rotation direction. The majority of the forming work takes place on the first rolling stand and a relatively small portion of the forming work takes place on the second rolling stand and additional smoothing work is carried out.

Abstract: A fabricating apparatus especially designed to perform work operations in areas where access is limited. The apparatus includes a frame defining an anvil and a straight guide bore, a first fabricating tool mounted on the anvil proximate the guide bore, a power cylinder mounted on the frame, and a link defining first and second ends and pivotally mounted at the first end thereof on the frame. A piston assembly is mounted in the power cylinder and includes a piston rod having a free end pressing against the link at a location between the first and second ends of the link. A carrier is mounted for linear movement on the frame and includes a main body portion and a guide rod portion slidably received in the frame guide bore. A second fabricating tool is mounted on a first face of the carrier in confronting relation to the first fabricating tool and a roller is mounted on the second end of the link and rollably engages a second face of the carrier opposite from the first carrier face.

Abstract: A link mechanism for driving a slide in a machine press has a pivot pin with an adjustable position for varying the die height and the stroke length of the slide. A first link of the link mechanism is connected to a sliding member which is restricted to vertical movement in a groove. Another end of the first link is pivotally connected to a second link and a third link. Another end of the second link is pivotally connected to the pivot pin. Another end of the third link is connected to a plunger which is connected to the slide. The plunger is movably held in the machine press and restricted to vertical movement. The up and down motion of the sliding member is translated through the first link, second link, and third link into the up and down movement of the plunger and the slide.

Abstract: A corner bending unit (2) for achieving a reciprocating movement in a tool holder (14) for a bending tool (12), the tool holder being articulated to a foundation (4) via parallel links (16, 18). The corner bending unit (2) has a pneumatic cylinder (38) with a piston rod (36) which is pivotally (34) joined to a triangle link (30), which is in turn pivotally joined (32) to one end of a link (28), the other end of which being joined to a pivot point (22) on the tool holder. The triangle link is pivotally carried in the foundation (4) about a pivot point (24) and forms, together with the link (28), a knee-joint mechanism (28, 30), which, under the influence of the cylinder (38) piston rod (36), can be moved from the bent-out position shown to a completely extended position, the tool holder (14) being movable between a starting position and a work position. The pivot point (22) is common to parallel link (16) and the link (28), and pivot point (24) is common to parallel link (18) and the triangle link (30).

Abstract: A forge machine has a main body, a motor disposed on a top portion of the main body, a flywheel disposed on an upper portion of the main body and driven by the motor, an eccentric shaft driven by the flywheel, a slide block disposed on the upper portion of the main body, a middle portion of the eccentric shaft inserted in a link seat, a round hole formed on a lower end of the link seat receiving a first drive arm and a second drive arm, an adjusting seat disposed between the first drive arm and the second drive arm, a ball screw rod having a hexagonal flange and a ball formed on a lower end of the ball screw rod, the ball screw rod inserted through a hollow disk, the hollow disk blocked by the hexagonal flange, the ball inserted in an oil press box. An oil pipe is connected to the oil press box and an oil adjusting box. An upper end of the ball screw rod is inserted in the adjusting seat. An axle passes through the slide block, the first drive arm and the second drive arm via the round hole.

Abstract: The eccentric shaft is connected via the connecting rod and slider to single arm levers projecting at both sides away from the slider. At their ends remote from the slider the levers are supported via threaded spindles at the frame of the punch press. Groups of link members are pivotally mounted to the levers. These groups of link members are connected to double lever pairs arranged symmetrically relative to the center line of the frame of the press. Every double lever is pivotally mounted to a pressing column. The pressing columns of a respective pair of double levers are mounted to a relative ram. Each ram is guided by three guide columns, of which two are rigidly connected to a ram and one to the frame of the press. By the symmetrical dividing of the driving structures and the two rams derived therefrom the punch press is given an extremely long space for mounting the tools without that the height of the punch press, the allowable rated output and the moving masses must be kept overly large.

Abstract: A driving device for a bending unit for bending-in an edge flange against a workpiece. The bending unit comprises a stand, supporting the driving device, a supporting surface for the workpiece and a linkage system, which supports a bending tool for the movement along a predetermined path of movement. A motor (14) is mounted on the stand (1) and is coupled to a crankshaft (23) mounted in the stand. The crankshaft supports on a crank pin (25) one end of a connecting rod (26), the other end of which is articulated to a link (8) in the linkage system. The connecting rod (26) is movable, by rotation of the crankshaft (23), between a rest position, in which it keeps the linkage system (8) and the tool in a deactivated position, and a work position, in which it keeps the linkage system (8) and the tool in an end position, where bending-in of the edge flange is completed.

Abstract: An arrangement for a bending unit for bending in a projecting edge flange (4) against a surface of a workpiece (3). The bending unit comprises a stand (1), supporting a drive unit, and a supporting surface for the workpiece, as well as a link system (7, 8), which in turn supports a tool holder (6) for a bending tool (5), which is displaceable along a predetermined path of movement between a starting position and a final position. The drive unit comprises a motor (17), which is coupled to a crankshaft (15). A toggle joint (17, 19) in the form of two links is joined, firstly, to a crank pin (16) rotatable with the crankshaft (15), and, secondly, to a fixed pivot point (9) in the stand (1). A drive link (21) is articulated, on the one hand, to a link (19) in the toggle joint, and, on the other hand, to the tool holder (6). The toggle joint is also provided with elements (24, 25) for buckling ut from the extended alignment position in either direction, depending on the rotational direction of the crankshaft (15).

Abstract: In a motor-operated press mechanism, a rocking link is rockingly supported by a supporting shaft which is pivotally supported by a top plate of a press machine, while a crank shaft which supports a crank is supported on one end portion of the rocking link, and a drive section is provided on another end portion of the rocking link, which, in a press working operation, regulates the position of the rocking link so that the crank shaft, the supporting shaft, and the press ram are substantially on a straight line, and, in a resetting operation, swings the rocking link so that the press ram is moved to a retracting position above the position where it is located in the press working operation.

Abstract: A multiple stand press or similar press facility for the forming of sheet metal parts has a bedplate, several press stands, and a press slide 7 which can be moved up and down by the press drive via drive gear boxes and connection rods. Tools in progressive stations follow a drawing station. In order to be able to reduce the size of the press facility, the press slide extends along at least two stand areas, and the introduction of force takes place via the connecting rods into the press slide in the stand areas.

Abstract: An improved can body maker apparatus has a drive system for reciprocating a ram. The drive system includes a crank having a first half and a second half, both being adapted for rotational movement about a first axis in the can body maker apparatus. A brake disk is fixedly mounted on the crank first half. A crank arm is mounted on the crank second half. The brake disk and the crank arm define therebetween a second axis. A connecting rod is supported for rotational movement about the second axis. The connecting rod is adapted for mechanical communication with the body maker ram. The brake disk and the crank arm define in combination at least one additional second axis, wherein the rotation of the crank arm about the additional second axis changes the throw of the connecting rod for each revolution of the drive system crank.

Abstract: The push rods (16, 17) are connected via ball-and-socket joints (42-45) to the ram (3). The sockets (44, 45) are located within the push rods (16, 17) and the balls (42, 43) are located above the ram (3) and mounted to same. Thus, in case of off center loadings of the ram (3) no bending moments are transmitted to the push rods (16, 17). The entire bottom side of the ram (3) is available for the receipt of connecting members for the mounting of a tool to the ram.

Abstract: The invention relates to an apparatus for bending a flange into engagement with a workpiece. A bending tool is mounted on a tool holder connected to a stand by a linkage mechanism. The linkage mechanism includes a first link with its ends journalled on a pin on the tool holder and on a fixed pin on the stand, and a second link with its ends journalled on a pin on the tool holder and on a pin, the position of which in relation tot he stand can be adjusted. A first drive member pivots the first link about its fixed pin and a second drive member moves the adjustable pin.

Abstract: A crimping tool has a movable die attached to a reciprocable slide member for movement toward and away from a fixed die. A pair of rollers are journaled for rotation in pivotable links carried by the slide member. An actuating mechanism includes a wedge which is movable between the pair of rollers to drive the rollers apart and into engagement with a pair of ramps, thereby moving the slide member and the movable die toward the fixed die. A biasing mechanism is selectively operable to bias the slide member and the movable die either toward or away from the fixed die with a relatively small force during times when the wedge is withdrawn from between the rollers.

Abstract: An articulated ram assembly in a tooling module for a stamping and forming machine is disclosed. The ram assembly has a first member that is caused to reciprocate within a passageway in a box structure by a lever eccentrically coupled to a drive shaft. The ram assembly includes a second member that is in sliding engagement with the first member and coupled thereto by means of four links. The links are pivotally attached to one of the members and are pivotally coupled through slide blocks to the other member. The links are also pivotally coupled by slide blocks to the box structure so that as the first member undergoes reciprocating motion within the box structure the second member undergoes reciprocating motion at a different rate than the first member. Therefore, the length of stroke of the second member is different than the length of stroke of the first member.

Abstract: The press has a basically C-shaped frame with a base plate (10), table (13), two side cheeks (11), and a head plate (12). A guiding body (20) which is arranged on the table between the two side walls without connection with the column cheeks loaded by the pressing force or with the upper part of the press is provided for guiding the box-shaped slide (30). The pressing force is initiated by a pressure-medium cylinder on the head plate. The piston rod (47) of the pressure-medium cylinder is coupled with two articulated levers (60) which are connected in turn at a side cheek (11) via guide rods (43). The two driving levers (60) are connected with the slide via two connecting rods (40). A column damping arrangement with two columns (50) has an upper part (52) connected with the cover plate, a lower part connected with the table, and a damping cylinder piston (51) acting therebetween.

Abstract: A crimping apparatus is disclosed utilizing an angular motion actuator and a unique tooling bar arrangement to redirect the angular motion so that the crimping dies move along a straight line during the crimping process. Two identical tooling bars are utilized that interengage to form a sliding assembly so that the two crimping dies, formed in the tooling bars, move along the straight line. The tooling bars, which are operated by the actuator, have complementary recess and projected portions. The projected portion of each bar is nested within the recess of the other bar. Each tooling bar has an elongated opening and a pin that slidingly engages the elongated opening of the other tooling bar to limit the sliding motion to motion along a straight line.

Abstract: There is disclosed a mechanical pressing machine of the general-purpose type which has advantages of a crank press, a knuckle press and a cam press. The pressing machine includes a slider which is mounted on a frame for vertical sliding movement, and has an upper press die mounted on a lower surface thereof, a pair of sliding blocks mounted respectively on right and left side portions of the frame for horizontal sliding movement, a pair of right and left connecting rods which are rotatably connected at their one ends to the sliding blocks, respectively, and are rotatably connected at their other ends to the slider, an input shaft which is rotatably mounted on the frame, and is connected at its one end to a flywheel, and a rib cam mounted on the other end portion of the input shaft, the rib cam having a peripheral portion held between cam followers and a roller follower, mounted on each of the pair of sliding blocks, so as to reciprocally move the pair of sliding blocks right and left in a symmetrical manner.

Abstract: An automatic spring formation apparatus includes a base on which an upright work table is mounted. A number of linear motion spring formation tools and at least a curved motion spring formation tool are slidably mounted on the front working surface to work on a wire fed through a wire feed passage formed on the work table so as to form a spring by being driven by independent servo motors under the control of a computerized numeric control unit. The linear motion spring formation tools are movable on the front working surface in a linear way along a radial direction pointing out from the wire feed passage while the curved motion spring formation tool is not only linearly movable on the front working surface along a radial direction pointing out from the wire feed passage, but also rotatable about a pivot normal to the working surface so as to move in a combination of linear translation and angular rotation.

Abstract: Method and Apparatus for carrying out an operation, such as pressing, riveting, cutting, etc., on a mechanical workpiece which operation comprises at least one stroke, or movement, along a predetermined path, of at least two active members (6,7) each being arranged on a carrying unit (1,2). The mechanical workpiece is first positioned between the active members (6,7). Thereafter the carrying units (1,2) for the active members are approached to each other in a first part of the stroke. The carrying units (1,2) are then locked to each other at the end of said first part of said stroke and a second part of said stroke is carried out by way of the relative movement between the active members (6,7) to achieve the desired effect on the said workpiece.

Abstract: A stamping and forming machine is disclosed having two operating modules, each of which has a punch assembly and a mating die assembly that reciprocate horizontally toward and away from each other for performing stamping and forming operations. The punch and die assemblies reciprocate within a passageway formed by a tool box comprising a base plate, two side plates screwed to the base plate, and a cover plate that is removably attached to the side plates. The cover plate is attached by means of dovetails that are formed in the outside edges of the side plates and the cover plate. The dovetails are spaced so that when the dovetail halves on one side of the cover and a respective side plate are in mating engagement, the other dovetail half on the cover is spaced from the dovetail half on the other side plate. A removable gib is arranged to closely fit in this space so that there is no appreciable lateral play between the cover and the side plates.

Abstract: A ram drive mechanism for an automated terminal crimping machine of the type having a rotating crank shaft with an offset crank pin (2) protruding therefrom and orbiting about the rotation axis of the crank shaft. The mechanism includes a ram (20) mounted for reciprocating motion in a first direction toward a crimping zone and in a second direction away from a crimping zone. The ram (20) carries tooling for performing a terminal crimping operation. The invention also includes a ram drive linkage comprising a drive link (40) having a pivotal connection with the crank pin (2) at one end. An other end of the drive link (40) has a pivotal connection with a link pin (50). The drive linkage reciprocates the ram (20) in accordance with orbiting of the crank pin (2).

Abstract: A machine and method for adjustment of the tooling of a forming machine while continuously operating such machine. The adjusting device being located in a movable or stationary machine part, such as the upper tool part. A measuring device for measuring the cutting and forming result, the measuring signals of which are used to set an actuator which actuates the adjusting device is included. The adjusting device can be actuated by a servo-motor fixed with respect to a stationary machine part. The output shaft of the servo-motor can be coupled with the adjusting device via a transmission arranged on the movable machine part, the driving-sided part of the transmission being arranged on the output shaft of the servo-motor to be slidably displaceable in the direction of movement of the movable machine part and rotatable with the motor output shaft.

Abstract: Both a method and an apparatus for the reduction of the load magnitudes present during the operation of a can body maker apparatus are provided through the use of a counterbalance mass structure system. A counterbalance structure is operatively associated with the crankshaft which motivates the can body maker ram assembly so that as the ram assembly is reciprocated along a straight line path during the formation of can bodies, the counterbalance structure is reciprocated to compensate for both the straight line (X axis) motion of the ram assembly as well as motion perpendicular thereto.

Abstract: Stamping and forming machine having reciprocable rams which move towards and away from each other between open and closed positions having adjustable eccentrics for adjusting the strokes of the rams. The rams are reciprocated by oscillating levers which are coupled to a power shaft by eccentric assemblies. Each eccentric assembly has a fixed eccentric on the power shaft and an adjustable eccentric which is rotatable, for adjustment purposes, with respect to the fixed eccentric thereby to change the stroke of the associated ram assembly.

Abstract: Four lever units are linked to the arrangement of connecting rods via a common bolt. Each lever unit drives one ram of the punch press. The rams are arranged in configuration of a square. This allows a much higher loading by off-center forces and the punch press can be designed for a given punch press output with considerably smaller dimensions.

Abstract: Compressive force transmitting coupling (64) between an actuator (16), which oscillates along an arcuate path and a ram block (12) which reciprocates along a straight line path comprises first and second compression blocks (66, 68) and a bearing (70) between the compression blocks (66, 68). The compression blocks are in alignment and in compressive engagement with the ram block (12) and actuator (16). The compression blocks have opposed concave cylindrical bearing surfaces (72, 73) and the bearing (70) has oppositely facing convex bearing surfaces (74, 75) which are complementary to the concave surfaces (72, 73) of the blocks (66, 68).

Abstract: A portable crimping tool is disclosed that includes an actuating mechanism that varies the amount of force made available to the crimping dies. A linear actuator having an axis is provided to move a movable die along that axis into crimping engagement with the mating die. The actuating mechanism includes a pair of links pivotally attached to a slide member. A wedge carried by the linear actuator engages a pair of rollers on the links, causing the rollers to move about other rollers attached to the frame, thereby causing the links to move the dies into crimping engagement.

Abstract: The present invention provides a small-sized slide adjusting device for use in a forging press manufactured by a simplified manufacturing process. An adjusting lever is provided with a nut receiving section, and a nut to be received in the nut receiving section is provided with turning shafts in axial alignment. A mounting hole is provided through two sides of the receiving section, a disc having an eccentric through hole is fitted in each mounting hole, and the turning shafts of the nut are fitted in a respective through hole. In one embodiment the nut is provided with a female screw situated at a right angle to the axial alignment direction of the turning shafts, and one end of the screw is connected to a motor mounted on a slide. In the slide adjusting device of this construction, a variation in height occurs due to the circular arc motion at the time of inclined movement of the adjusting lever making a center of a wrist pin a fulcrum followed by turning movement of the disc and turning shafts.

Abstract: A machine for hemming an edge portion of an arcuate panel having a fixed die with an arcuate contour complementary to the panel, a moveable die head having prehemming and hemming dies thereon with edge contours, respectively, complementary to the edge contour of said panel. A single fluid actuator and a cam controlled linkage effect both vertical and lateral movement of both the hemming die and prehemming die relative to the fixed die upon operation of the actuator. A pair of arms are pivotally attached to the prehemming die to form a radius of rotation which controls horizontal and vertical movement of the prehemming die relative to the moveable die head to provide proper clearance and disengagement between the prehemming die and the edge portion of the arcuate panel and/or the fixed die after completion of the prehemming operation.

Abstract: Force transmitting coupling (44) for transmitting force from an actuator (16) which oscillates along an arcuate path to a ram block (12) which reciprocates along a rectilinear path comprises a flexible member (50) coupling which is connected to the actuator (16) by a lost motion connection (90, 94) and which is against the ram block (12). The flexible member (50) is supported intermediate its ends in a manner such that it can flex by a predetermined amount but not more than the predetermined amount. When the ram block (12) is pushed from a retracted position to a forward position, the flexible member is placed in compression and flexes by only the predetermined amount. The force transmitted to the ram block is applied to the axis of the ram block.

Abstract: A mechanical force enhancement device which both amplified an input force to produce a larger output force while also reducing the speed of an output member during the latter part of the output stroke. The device employs a sequential pivoting operation which is capable of providing the above results while being uncomplicated in its design and construction. The device includes a housing having a pair of spaced-apart camming plates. Each camming plate has a pair of opposing camming contours formed therein so as to define two sets of spaced-apart camming contours. At one end of each camming contour is a recess so as to define two sets of spaced-apart recesses. A linkage member is disposed between the camming plates and includes a driven end adjacent one of the sets of spaced-apart camming contours and a driving end adjacent the other set of spaced-apart camming contours.

Abstract: A clamp that encircles the outer rim of an out-of-round workpiece such as a deformed tubular pipe to reform the cross-section of same into one that is substantially round, the clamp including a frame, a plurality of pivotally mounted force applying assemblies each having a force applying member to engage the workpiece, and drive means for pivoting all of the force applying assemblies simultaneously such that the force applying members are simultaneously and uniformly repositioned radially inwardly and outwardly relative to a circle defining the locus of pivot axes for the force applying members, the force applying members being adapted to close into a circle having a diameter sized to engage the workpiece when inserted therein.

Abstract: The balancing weight for the balancing of the rotating forces is connected via link members to respective balancing weights for the balancing of the oscillating forces. The balancing weights for the balancing of the oscillating forces are each pivotable mounted to the machine frame at one end via projections. At the respective opposite ends they include further projections, via which those ends are pivotably connected to each other via a pivot member. This forms the guiding of the movement of the balancing weights.

Abstract: A press machine slide stroke adjusting apparatus comprises an eccentric sleeve connected to a slide and fitted over a circular eccentric portion of a crank shaft, first teeth provided on the eccentric sleeve and concentric to the circular eccentric portion, a main gear disposed on the crank shaft in coaxial relationship therewith, and second teeth meshing with the first teeth and provided on main gear coaxially with the crank shaft. The crank shaft is disconnected and connected from and to the main gear by coupling. A hydraulic actuator disengages the crank shaft from the main gear. The rotation of the crank shaft disconnected from the main gear is prevented by engagement of a pin and an engaging hole in an engaging block. Under such conditions, the eccentric sleeve is turned relative to the circular eccentric portion to adjust a vertical stroke of the slide.

Abstract: The present invention relates to methods and apparatus for forming features on an elongated metal wire and, in particular to making features, such as pin tips, compliant sections and retention sections on electrical terminal pins for use in interconnecting electrical leads, plated through holes in printed circuit boards and/or connector contacts.

Abstract: An apparatus and method for forming a hem on an edge of a sheet metal member including an anvil attached to a columnar support structure that also includes a cantilevered bracket that is the support for a movable hemmer bracket to which a hemming steel is attached. By the utilization of a pair of crank arms, the hemmer bracket is movable through a plurality of arcuate paths which permits the hemming steel to perform multiple forming operations on a workpiece held by the anvil. The method includes the steps of partially hemming a sheet metal member, then disengaging the hemming steel contact with the workpiece, then moving the hemming steel to a new location before recontacting the workpiece with the hemming steel.

Abstract: A press apparatus is disclosed which includes a bed, a pair of opposing ram guides fixedly mounted to the bed, and a ram slidably mounted to the ram guides for linear movement relative to the bed. A pair of pull links is arranged on opposing sides of the ram, and a pull link support shaft is provided to pivotably mount the lower ends of the pull links to the bed for pivotal movement together relative to the bed. A pair of lever links is arranged on opposing sides of the ram, and a lever link support shaft is provided to pivotally mount the pair of lever links to the ram for pivotal movement together relative to the ram. A first connecting shaft is provided to pivotally mount the upper end of each of the pull links to a respective one of the lever links. A reciprocating cylinder device is operatively connected to the lever links in order to selectively force the lever links to pivot together in first and second rotational directions relative to the ram when operated in first and second selected manners.

Abstract: Apparatus for bending a margin flange (5) which projects at an angle to a surface of a workpiece (4) against that surface, includes a bending tool (6) which is mounted on a tool holder (7) which by a linkage system (8-13) is connected to a stand (1) which carries the workpiece (4). A drive arrangement (15-24) is connected to the tool holder (7) for movement of the tool holder in relation to the stand (1). The linkage system connecting the tool holder (7) with the stand (1) includes two mutually parallel carrier links (8, 11) each of which is pivotally mounted at one end thereof on a respective journal pin (9, 12) located on the tool holder (7). The other end of one carrier link (8) is pivotally mounted on a journal pin (10) which is fixedly mounted on the stand (1) and which also pivotally carries one end of a connecting link (14), the other end of which is pivotally connected to the other end of the other carrier link (11) by a pin (13).

Abstract: Apparatus for bending a margin flange (5), which projects at an angle to a surface on a workpiece (2), against the workpiece. The apparatus includes a bending tool (6) which is mounted on a tool holder (14) carried by a parallelogram mechanism (7-12) for movement in relation to a stand (1) on which the workpiece (2) is placed. A drive arrangement (17) is drivingly connected to the tool holder (14) by a linkage (21-27). The tool holder (14) includes a main part (13) connected to the parallelogram mechanism (7-12) and a movable part (15) which is pivotal about a journal pin (16) on the main part. The journal pin (16) is substantially parallel with the axes (7, 8, 11, 12) of the parallelogram mechanism. The movable part (15) carries the tool (6) and by a resilient element (32) is urged towards a starting position with a nose of the tool (6) biased away from the workpiece (2).

Abstract: The invention relates to an apparatus for bending a flange against a workpiece (3). A preliminary bending tool (5) on a first tool holder (7) is carried by a linkage mechanism (8-13) for movement in relation to a stand (1). A bend finishing tool (6) on a second tool holder (14) is carried by a parallelogram linkage mechanism (15-20) for movement in relation to the stand (1). The first linkage mechanism (8-13) forms a parallelogram having a line between the axes (10,11) of the links extending perpendicularly to a line between the axes (17,18) of the second linkage mechanism (15-20). One single drive member (21) is connected to the parallelogram linkage mechanism (15-20) to drive the second tool holder (14). A drive link (28) is connected between the parallelogram linkage mechanism (15-20) and the first tool holder (7) to drive this.

Abstract: A machine for hemming a panel having a fixed die with an edge contour complementary to an edge of the panel, a movable die head having prehemming and hemming dies thereon with edge contours, respectively, complementary to the edge contour of said panel, a single fluid actuator, and a cam controlled linkage for effecting both vertical and lateral movement of both said hemming die and said prehemming die relative to said fixed die upon operation of said actuator.

Abstract: An upsetting press for swaging wire segments into balls or the like. The press includes a fixed matrix, a stamp holder provided for a stamp and mounted on a machine frame so as to be displaceable in the stamping direction, a cam drive mechanism for the stamp holder, and a gripper device provided for the wire segments. The cam drive mechanism is a double cam that is rotatably mounted in the machine frame. An angle lever is pivotably mounted in the machine frame. Follower rollers are carried by the angle lever and run on the double cam. A presser carriage is provided for the stamp holder and is guided in the machine frame in such a way that it can move back and forth. A knee lever is provided that has two arms, one of which is connected to the machine frame and the other of which is connected to the presser carriage. A connecting rod operatively interconnects the angle lever with the knee lever.

Abstract: A press for performing a work operation on a workpiece including a yoke defining a central bore, a ram mounted for reciprocal movement in the bore and carrying a fabricating tool on one end of the ram, an electric motor secured to an end wall of the yoke and having an output shaft passing through the end wall of the yoke, a ball screw driven by the output shaft of the motor and positioned in the bore of the yoke, a ball nut mounted in the bore on the ball screw, and a force multiplying mechanism interconnecting the ball nut and the ram and operative to move the ram to a preparatory position and thereafter multiply the force applied to the ram to facilitate the performance of the work operation.