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: The guideway for each working carriage has a predetermined parking position in a bending machine for skein-shaped material, in which several working carriages can be adjusted in positions determined by a bending program in a working plate and which comprises at least one working carriage guideway and a drivable working carriage transport device, with which each working carriage can be optionally coupled for adjustment. Each working carriage positioned for working can be adjusted to its parking position with the transport device and can be adjusted again to any optional position from the parking position by the transport device. A program control unit is preferably provided which clears the working carriages after the machining of a lot size of a bending program to their parking positions with leader and trailer programs and, prior to the beginning of a lot size, brings the working carriages from their store parking positions with a new bending program and adjusts them to the new positions.

Abstract: A bending die includes a first die portion for bending a stretch portion of a composite flange and a second die portion for bending a straight portion of the composite flange. The first die portion has a first inclined surface inclined at a first angle with respect to a horizontal direction, and the second die portion has a second inclined surface inclined at a second angle with respect to the horizontal direction. The second angle is smaller than the first angle. As a result, when the bending die is moved toward the composite flange, the first inclined surface begins to contact the stretch portion before the second inclined surface contacts the straight portion, so that a warp is prevented from being generated in the composite flange.

Abstract: A method of efficiently bending a lead of an electric part by use of a bender including an upper die and a lower die without denting or scratching the lead and hence causing no peeling of the plating therefrom. The method comprises the steps of: clamping the root portion of the leads between a moving stripper of the upper die and a fixed die member of the lower die; effecting a first motion in which the distal end portion of the lead that is clamped between a moving punch of the upper die and a moving die member of the lower die is pressed downwardly; and effecting a second motion simultaneously with the first motion, in which the moving punch and the moving die member, which clamp the distal end portion of the lead, are moved in a direction perpendicular to the direction of the first motion, thereby bending the lead along an approximately circular locus about the root portion of the lead by a resultant motion from the first and second motions of the moving punch and the moving die member.

Abstract: There is disclosed, a kit of parts for a hand tool (2) for forming electrical tabs (T1,T2) projecting from cable end portions (FC1, FC2) to a plurality of different configurations. The kit of parts comprises a plurality of different tab forming dies (14,16,18), a base assembly (8) having thereon two spaced tab forming anvils (10,12) for co-operation respective ones of the dies (14,16,18), an upper tooling mount assembly (6) having a spline (60) for receiving a selected one of the dies (14,16,18), and an actuating mechanism (4). The tooling mount assembly (6) is mounted to the base assembly (8) so as to be moveable theretowards through a working stroke to cause the selected die (14,16,18), on the spline (60) to co-operate with the appropriate anvil (10,12) to form the tabs (T1 or T2) of a cable end portion (FC1,FC2) laid on a cable receiving surface (92,104) of the appropriate anvil (10,12) to a particular configuration determined by the choice of the die (14,16,18) and anvil (10,12).

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 device for bending a workpiece having a substantially planar leg fixed to a substantially planar cap at an initial angle comprises a block bar having a rounded bending surface for contacting the leg of a workpiece and a punch for urging the leg of the workpiece against the rounded bending surface to vary the angle between the cap and the leg from the initial angle to a desired angle while simultaneously maintaining the substantially planar shape of the cap and the leg. A method for bending a workpiece having a substantially planar leg fixed to a substantially planar cap at an initial angle comprises positioning the workpiece adjacent a block having a rounded bending surface and urging the leg of the workpiece against the bending surface.

Abstract: An apparatus, and method of using the apparatus for forming multiple bends in the lead wires of a multiple lead integrated circuit package. The apparatus comprises cooperating first form punches which provide a first bend in the lead wires, and a plurality of second form punches and anvils to provide a second bend in the lead wires. The lead wires are held by a clamp mechanism during the bending process so as to prevent damage to the package. The integrated circuit package is provided in a lead frame strip which is indexed through the apparatus so that a plurality of packages are worked at each of the three different positions. A misfeed mechanism is provided to shut down power to the device in the event of a misfeed.

Abstract: The present invention provides a device for bending thin metallic pipes suitably used as a fuel supply pipe, brake pipe and the like of an automobile, which are bent at a plurality of portions thereof not in the same direction but in three-dimensional directions. The device according to the invention includes a stationary mold form having a first and a second bending section to the shapes of which a metallic pipe is bent and a guide member erected upright on the mold form at the second bending section, a bending member arranged outside the mold form and movable toward the latter for bending the metallic pipe, a rotor for rotating the bending member and an actuator for operating the rotor through a wire.

Abstract: A small-diameter metallic conduit bending machine includes a stationary frame which is shaped so as to substantially conform to a finished metallic conduit. A bending member is provided movably toward the stationary frame from thereoutside to bend a metallic conduit. To prevent the bending member from interfering with the metallic conduit which is moving as the result of the bending process of a preceding stage, an actuator is provided to remove the bending member from the moving area of the metallic conduit. That is, the binding member is made movable toward the stationary frame and retractable from the moving area of the metallic conduit.

Abstract: A straightening method particularly for an elongated metal member having a long longitudinally linear length, is carried out by an automatic straightening apparatus by the manner of preliminarily setting a plurality of points at which distortion are to be straightened. When it is required to straighten an amount of distortion to be straightened at a certain point, the amount is adjusted in consideration of the amounts of strains to be straightened at the other points by utilizing the method of least squares so that the elongated metal member has substantially a linearly straight shape. According to this manner, the amounts of the respective points of the long member to be straightened are adjusted. The distortion of the elongated metal member can thus be substantially straightened to a highly improved accuracy.

Abstract: A small-diameter metallic conduit bending machine comprises a stationary frame segment and a movable or separated frame segment, each including a bending station. Where a metallic conduit seems to interfere with the movable frame segment kept in its normal position when the metallic conduit is bent by a bending member, the movable frame segment is displaced to avoid interference, a subsequent bending work is performed beforehand, and then the subject bending work is performed after the movable frame segment is returned to its normal position.

Abstract: Method and apparatus for straightening of cast anodes on their way to a stage for electrolytic refining of metals. The straightening of the anodes and the elimination of casting fins is carried out by pressing the anode at several spots or spot areas simultaneously.

Abstract: Method and apparatus for straightening of cast anodes on their way to a stage for electrolytic refining of metals. The straightening of the anodes and the elimination of the casting fins is carried out by pressing the anode at several spots or spot areas simultaneously. The apparatus includes a pressing member formed of horizontal and vertical bars. The adjacent ends of the horizontal and vertical bars form at least one of a 45.degree. miter joint configuration or are right-angled.

Abstract: A prickle chain wherein each link has two side portions which are joined at one end by a curved bridge portion, the side portions terminating in respective outwardly projecting ends which cross each other and extend in opposite directions, the projections being the "prickles" of the chain. Each link is formed by engaging opposite ends of a straight rod in respective brackets which are pivoted by hydraulic piston/cylinder assemblies firstly to form the rod to a "U" shape, and then cause the ends to cross each other and project outwardly in opposite directions.

Abstract: The disclosure relates to improved methods of forming sheet metal of general application, and particularly useful in the formation of certain forms of merchandise display devices having relatively moving parts serving to serially advance stacks of merchandise packages.

Abstract: There is provided a new and useful slip lock forming apparatus comprising a support structure, a forming die mounted on the support structure, a clamping mechanism mounted on the support structure and comprising a pair of clamping members movable between an open and a closed position for holding a workpiece in position relative to the die, a press mechanism mounted on the structure and comprising a pair of pressing surfaces at least one of which is movable relative to the other between a first position in which the surfaces are in contact and a second position in which the surfaces are spaced from each other, and a forming bar mounted on the structure and movable between a retracted position and an extended position for forming a workpiece around the die.

Abstract: In a multi-slide wire and strip forming machine, an improvement that enhances the flexibility of the machine primarily from the standpoint of providing increased forming time relative to feeding time. The machine includes a wire forming means operable at the work station in response to the machine camshaft and operable over a predetermined forming. Wire feeding means is also included operable in response to the camshaft over a predetermined feeding period. An improved gearing arrangement is provided intercoupling the camshaft and the wire feeding means and configured to provide during a full camshaft rotation, different intervals of the predetermined forming and feeding periods, respectively.

Abstract: A bending press includes a work support table comprised of a pair of support elements, at least one of which is mounted on the frame for movement generally vertically relative to the work support plane. Workpiece positioning elements are located on opposite sides of the work station defined by the upper and lower dies and are movable horizontally of the work support plane defined by the work support table. A drive motor effects horizontal movement of at least one of the workpiece positioning elements relative to the other positioning elements so as to move the workpiece on the work support table and effect its precise positioning in desired positions relative to the work station. The machine includes a computer control for operating the various drive motors and may include a rotatable work support table for effecting rotation of the workpiece to reorient it relative to the work station.

Abstract: In order to manufacture shaped tubular articles of plastics material, a semi-finished tube of softened plastics which is substantially straight and has a diameter about equal to the diameter of the article to be formed is introduced into a mould defining a cavity which is substantially straight. Subsequently, the mould is operated so as to deform the cavity and give it a shape corresponding to the shape of the article to be formed.

Abstract: The apparatus of this invention, for bending wire and metal strip, comprises a stationary working plate, a drive shaft rotatable in bearings spaced along its length and fixed relative to the working plate, and a tool guide unit confined to adjustment relative to the working plate in directions parallel to the drive shaft and carrying a tool slide that it guides for reciprocation transverse to the drive shaft. A cam on the drive shaft by which the tool slide is reciprocated is fixed to an axial sleeve portion concentric to the drive shaft and axially slidable along it, which sleeve portion is rotatably received in a cam bearing that is secured in the tool guide unit. The cam bearing thus radially supports the cam and the drive shaft so that the drive shaft can be relatively slender and light.

Abstract: A forming disc exchanging method and apparatus for use in a forming apparatus for performing bending operations in multiple directions by timing and sequentially operating a plurality of bending slides. The forming apparatus includes a forming disc which includes a plurality of bending slides, a gear mechanism for actuating the bending slides, a product discharging device and a mold. A main forming machine has the forming disc removably attached thereto and includes a guide structure for allowing the disc to slide thereon. Further included is a truck which includes a drive device having the forming disc removably attached thereto for turning the gears, guides for allowing the disc to slide thereon, and a transfer device for sliding and transferring the forming disc.

Abstract: A duct-shaping machine having a pair of major-axis duct-shaping modules for elongating the cross section of a cylindrical duct as they are forced apart, a minor-axis compaction assembly having first and second compactors pressing inwardly towards the center line between the modules to flatten the sides of the duct.

Abstract: A cable bending device specifically adapted to form an expansion bend or loop in a cable television wire or cable to enable the cable television cable to expand and contract during temperature changes without undue tension, stress or buckling of the cable television cable. The bending device includes an elongated, generally vertical plate supported from the lasher cable at a point adjacent a supporting pole or the like with the plate including a pair of end shoes engaging the undersurface of the cable television cable and a center shoe engaging the top surface of the cable television cable. The center shoe can be adjusted vertically by a handcrank and screw threaded shaft arrangement and the two end shoes can be adjusted and locked by eccentric locking mechanism.

Abstract: An apparatus is provided which forms flanges on sheet metal for ventilation duct walling. The apparatus comprises a die support which contains a pressure die, a beam punch carrier mounted in low-friction manner on the die support, and a forming roller pivotally housed in a recess of the die support. Hydraulic drives are supported, each between the die support on the one hand and the beam punch carrier or the forming roller on the other hand, and these produce the movements necessary for edge folding and roll forming. The forces which arise are taken up directly at their point of origin by the mutually moving parts themselves.

Abstract: A device for corrugating a sheet material with forming staggered cut corrtions, comprising a mechanism 1 for feeding a sheet material 2 to at least two punches 3, 4. The punches 3, 4 are mounted for reciprocating motion on both sides of the material 2 in the plane perpendicular to the plane of the material 2 and over the surface of the material 2 at right angles to the direction of its feeding. The device is provided with dies 12, 13 disposed on both sides of the punches 3, 4 in the direction of feeding the material 2, with a clearance being not less than the thickness of the material 2. The dies 12, 13 are adapted to reciprocate relative to the punches 3, 4 at right angles to the plane of the material 2 such that in the process of forming the corrugations the punches 3, 4 are forced in the material 2 between the oppositely lying dies.

Abstract: A press apparatus having a lower die, an upper die and a lateral pressing cam mechanism adapted to apply a lateral pressure to a work clamped between the upper and lower dies. The lateral pressing cam mechanism includes a slidable cam adapted to be slided towards the clamped work through cooperation with a fixed cam fixed to an actuator. The apparatus has a guide mechanism pivotally secured at its one end to a supporting member extended from the lower die and provided at its other end with a guide portion for locating the work on the lower die. A mutually cooperating cam is provided on the upper portion of the slidable cam and on the central portion of the guide mechanism, so that the guide mechanism is swung from the path of the slidable cam as it is moved towards the work clamped between the two dies.

Abstract: This invention relates to the bending of shaped sheet metal, which shows alternatingly occurring longitudinal ridges and valleys, the lateral portions of which constitute lateral portions of the ridges, about an axis, which extends perpendicularly to the longitudinal direction of the ridges and valleys and is in parallel with the plane of the sheet. Known methods of bending such shaped sheet metal have proved to have certain limitations with respect to applicability and smallest bending radius to be obtained in one or more coherent bending moments or steps. For eliminating these shortcomings a method of bending shaped sheet metal is proposed, at which the bending takes place in at least two subsequent moments or steps.

Abstract: A machine for bending wire into a ring having a plurality of circumferentially spaced and radially outwardly projecting loops. A loop is formed by the cooperation of a pair of first mandrels longitudinally spaced apart on one side of a wire segment and a second mandrel normally positioned on the other side of the wire segment and moved generally transversely across the longitude of the wire segment along a path between the first mandrels while essentially simultaneously the first mandrels are moved generally longitudinally toward each other. Pairs of third and fourth mandrels disposed on opposite sides of the wire form bends in the wire to provide a plurality of rectilinear portions interconnecting adjacent loops to form a ring-like configuration.

Abstract: The invention relates to a method of rolling tire rim blanks from flat metal strips obtained by unwinding strip material from a coil which is cut into strips of desired lengths which are then rolled into a circular shape by anvil rolls cooperating with bodily moveable bending rolls producing a controlled flat portion on the leading end of the strip prior to rolling and another controlled flat portion on the trailing end of the strip following the rolling.

Abstract: A method of producing a corrugated annulus is disclosed which has substantially radial folds therein, the method consisting essentially of forming in one continuous straight piece of metal a curved or arcuate head for a reel or the like which method consists in forming a number of radial folds extending from one edge of the strip to the other, the radial folds being of variable depth decreasing from the inner to the outer periphery of the formed annulus.

Abstract: There is disclosed herein a method and apparatus for fabricating a pulley which the pulley rim is fabricated from a cylindrically-shaped blank of constant diameter which is deformed by relatively movable die forming members so as to form a ring having a V-shaped cross section which may then be assembled to a hub member. Auxiliary forming dies are also disclosed which may assist in the proper formation of the V-shaped cross section. In another form, the pulley rim is fabricated with multiple annular V-grooves. Apparatus effective for carrying out the above method is also disclosed herein.

Abstract: Disclosed herein is a method of forming a cutting link from a generally planar cutting blank, and an apparatus capable of performance in accordance with the method and comprising a stationary die part, means including a first die part movable relative to the stationary part in a first path and operable, in response to movement of the first movable die part relative to the stationary die part, to bend a shank part of the blank relative to a link part of the blank to form a link shank portion into angular relation a cutting link linking portion and to partially bend a toe part of the blank relative to the shank part, and means including a second die part movable in a direction transverse to the first path and relative to the stationary die part and operable, in response to movement of the second die part relative to the stationary die part, to cold flow the toe part to form a link toe portion into angular relation to the link shank portion and into transverse relation to the linking portion.

Abstract: A rectangular tubing bender having a frame provided with an arrangement for locking in place a tube to be bent. Structure on the frame forms directly opposed depressions on opposite sides of the rectangular tube prior to bending of the tube adjacent the depressions for permitting a completely closed and square bend to be formed. The locking arrangement may be mounted on a carriage movable on the frame for bending the tube by moving same against a stationary forming point member subsequent to the formation of the depressions in the tube. Cam operated rockers are advantageously employed to form the depressions.

Abstract: Disclosed herein is a method and apparatus for forming a saw chain cutting link blank including a link portion, a shank portion extending from the link portion, and a toe portion extending from the shank portion, into a saw chain cutting link wherein the shank portion extends from the link portion in angular relation thereto and wherein the toe portion extends from the shank portion in angular relation thereto and in transverse relation to the link portion, the apparatus comprises means for locating a blank relative to a stationary die part, means including a first die part movable in a rectilinear path relative to the stationary die part for bending the shank portion relative to the link portion into the angular relation in response to movement of the first movable die part relative to the stationary die part, means including a second die part movable in the direction of the rectilinear path and relative to the stationary die part for partially bending the toe portion relative to the shank portion in respons

Abstract: A new process of folding sheet metal to form various kinds of structures. The characteristic feature of each of the structures capable of being formed by the invention is that they are developable without slitting and have at least two adjacent surface segments which together, or in combination with each other if more than two are present, form a complex surface, developable without slitting. The structure consists of one or more of the types of surfaces known as plane, cylindrical, conical and convolute surfaces arranged in such relation that straight bend lines upon the complex surface and the images thereof when projected on the pattern meet within the confines of the surface and pattern at other than a straight line extending from edge to edge of the complex surface and pattern, respectively. A specific form of the apparatus particularly adapted for carrying out the process also is disclosed. The principles of this apparatus may be used to form various useful objects, by the method described and claimed.

Abstract: A sheet metal bending brake apparatus adapted to make complex bends in a sheet metal workpiece, comprising a frame, a fixed holding bar mounted adjacent of said surface, a movable holding bar mounted on said frame movable between a forward clamping position in opposed clamping relationship with the fixed bar and a rearward and downward position below the plane of the fixed surface, a bending brake element adjacent the fixed jaw adapted to contact sheet metal held between the same, said bending element adapted to rotate 180.degree., or more, around a point adjacent the jaws, the movable holding bar being coordinated with the bending brake to release from the holding position before the bending brake has rotated 180.degree..