Abstract: In a device for connecting a wire to a contact element or the like by deformation of clamping members by means of pressure elements of a crimping tool arranged interchangeably in a press, for the purposes of refining the adjustability in respect of height, coaxially rotatably associated with an adjustment disk (13) which is provided at the pressure member side and which is rotatable about the axis (A) of an arresting pin (16) or the like holding member which faces in the pressing direction (x) is a further adjustment disk (14) at the clamping member side, wherein the two adjustment disks are each provided with at least one annular surface (108) which rises spiral-like in the pressing direction (x). Each of the annular surfaces (108) has a radial step edge (110) as the boundary between the beginning and the end of the rise. The heights of the step edges are also to be the same.

Abstract: A shutheight adjustment system incorporating hydraulic tie rod nut assemblies for dynamically altering the tensioning and compression of the tie rods of a power press. Each hydraulic tie rod nut assembly includes a cylinder with an inner sliding piston threadably engaging the tie rod. A pressurizing mechanism injects pressurized fluid within a chamber formed by the piston and cylinder. By increasing pressure within the chamber of the hydraulic tie rod nut assembly, compression between the press bed and press crown may be increased thereby reducing the press shutheight.

Abstract: A lifting frame assembly having first and second spaced hooking members adjustably carried on a second portion of the lifting frame assembly is connectable to work tools of different sizes. The lifting frame assembly is connected to a lifting device by a lever arm which causes the lifting frame assembly to hang at an acute angle relative to a vertical plane so that the work tool may be aligned relative to a tool holder of a machine tool without interference. A first end portion of the lifting frame assembly is extensible in order to traverse the length of a ram of the machine tool and further improve alignment capabilities with the tool holder.

Abstract: Herein disclosed is a press tool interchanging apparatus for a press machine, comprising: a tool plate arranged in a press station and including a plurality of tool clamps hydraulically actuated for clamping a press tool; a bolster plate underlying the tool plate and having a plurality of rollers adapted to appear, when lifted, above the upper surface of the bolster plate for carrying the press tool; a plurality of lifters arranged in the bolster plate and hydraulically actuated for lifting the rollers; and a plurality of pressure fluid conduits arranged in the tool plate for feeding a fluid under pressure to the tool clamps and the lifters. Thus, the tool plate is arranged with the tool clamps and the fluid conduits, and the lifters having the vertically movable rollers are mounted in the bolster plate.

Abstract: The shut height of a crimping die set (9) for crimping an electrical terminal (T) on an anvil (22) to a lead (L) is adjustable stepwise by means of a disc (60) which can be driven by a servo motor (M1) to a plurality of angular positions each setting a theoretical ideal shut height for a particular combination of lead and terminal sizes. Since anvil wear, in particular, and/or minor variations in lead and terminal dimensions can falsify the ideal crimp height set, the actual crimp height achieved, is measured electronically or mechanically, and the height of the anvil (22) is automatically adjusted in accordance with such measurement, by means of a further servo motor (M2) to adjust the shut height of the die set (9) and anvil (22), so that the ideal shut height is achieved.

Abstract: A stamping and bending machine comprises a drive housing with a drive housing visual wall and two drive housing face walls. From each of the drive housing face walls projects at least one housing box. Processing devices are attachable to the housing boxes. A distributor gear is provided within the drive housing. Each of the housing boxes accommodates a housing box shaft drivingly connected with a distributor gear and with the processing devices.

Abstract: An apparatus for use with a press which corrects the spacing between an upper die and a lower die when the press is at bottom dead center. The apparatus includes a detector which is operative during each cycle of reciprocal movement of the press slide to detect the spacing between the upper and lower dies, a comparator which compares the detected spacing during each cycle with a prior spacing, an axially expansible/contractible piezoelectric actuator mounted on the press so that its axial length affects the spacing between the upper and lower dies when the press is at bottom dead center, and a drive circuit which is responsive to a deviation signal from the comparator to drive the actuator with a high voltage so as to expand or contract its axial length according to the difference between the detected and prior spacing of the dies.

Abstract: A press machine having a composite piston assembly, a lubricant oil recovery system, and interchangeable die alignment members. The composite piston assembly includes a primary piston member and a secondary piston member attached thereto for movement with the primary piston member. The secondary piston member includes recesses for receiving a spider and a punch retainer and also has a die retainer attached thereto. The lubricant recovery system collects lubricant which leaks from the press machine during normal operation, filters such lubricant, and returns it to the lubricating system of the press machine for re-use. The interchangeable alignment numbers are of a standardized dimension whereby when received in a receptacle on the frame of the press machine, no machining to the alignment members is required because expendable spacers of a predetermined thickness are used.

Abstract: A master brake die has a pair of adjustable die shoes. First and second shim packages each having a plurality of shims of a preselected width are positioned adjacent a respective die shoe and moveable therewith. A preselected number of shims from each shim package is controllably moved into an operative position between a stop surface and a respective die shoe.

Abstract: An apparatus for changing workpiece holders in a transfer press. An attachment 90 having suction cups 10 is removably attached to a cross-bar 8. The attachment 90 is supported on a attachment support base 19 disposed in a lower die 2a-2e. A movable upright support 12 which is movable between the attachment support base 19 and the cross-bar 8 is disposed on a die change truck 4. An attachment bearer 17 having a holding device 16 capable of holding the attachment 90 is provided on the top end of the movable upright support 12. The attachment 90 which has been supported on the attachment support base 19 is, in turn, held in position by the holding device 16 of the movable upright support 12, and then through movement of the movable upright support 12 the attachment 90 is transferred to the position of the cross-bar 8 for being fitted on the cross bar 8. Change of suction cups 10 is performed simply through attachment 90 changing. Thus, change of workpiece holders in connection with work change is automatized.

Abstract: A method and apparatus for changing dies on a moving bolster for a press including a control circuit in combination with a cam-actuated deceleration valve. A cam is located at a predetermined location along a path for the moving bolster. Upon reaching the cam location when the bolster is moving toward or away from the press, the deceleration valve is actuated to inhibit and shut off a flow of air to air-operated motors on the bolster. Thereupon, the bolster moves to a stop at a predetermined location relative to the press.

Abstract: Pliers having a pair of handles and a pair of shank members have one member of a die pair for treating a workpiece on each of the shank members. The die members are attached to the inner sides of the shank members rotatably about an axis situated in the tool plane, and a follower is provided to ensure their corotation. The workpiece may be introduced into the die pair frontally or laterally, depending on the rotational position of the die pair. In one embodiment, the die members are also pivotable about axes extending at right angles to the tool plane. The pliers may be used in many applications such as crimping electrical terminals.

Abstract: A crimp height adjustment mechanism is disclosed for use in a crimping machine having an anvil and a ram carrying a crimping die. The ram is secured against rotation and guided for reciprocal movement along a ram axis for moving the crimping die toward and away from the anvil. A drive member is connected for reciprocating the ram. The adjustment mechanism includes a first member fixed with respect to the anvil and having a first threaded portion of a first thread pitch extending along an adjustment axis parallel to the ram axis. A second member has a second threaded portion coaxial to the first threaded portion. The second threaded portion has a second thread pitch which differs from the first thread pitch. The second member is secured against rotation and coupled to move the ram linearly along the ram axis. A third member has both a third threaded portion which is threadedly engaged with the first threaded portion, and a fourth threaded portion which is threadedly engaged with the second threaded portion.

Abstract: An apparatus for replacing the tool sets without requiring any fixing or removal of the fluid pressure pipes such as hydraulic hoses or the like when the tool sets are fixed to or removed from the main body of the power molding press. Swing arms 6 having arm lengths set therein are oscillatably and rotatably fitted to the arm shafts 5 vertically installed at proper side locations of the main body 1 of the press in such a way as the rotating radius of the arm shafts may overlap the mounting position of the main body 1 of the press. The extreme ends of the swing arms 6 are provided with supporting boxes 7 on which the tool sets 3 are mounted. Rotation of the swing arms 6 enables the tool sets 3 to be moved toward or away from the centeral part of the main body 1 of the press and then the tool sets 3 to be fixed to or removed from the main body 1 of the press.

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 tool changing apparatus for changing the punches and dies on a turret punch press is disclosed, wherein a carriage device provided with a upper rotatable disk on which a plurality of punches is removably supported, and a lower rotatable disk on which a die holders supporting a plurality of dies is removably supported, is positioned at the side of the turret punch press. A punch mounting/dismounting device is further provided for dismounting a punch from and mounting a punch on the upper rotatable disk and for dismounting a punch from and mounting a punch on an upper turret disk on the turret punch press. The punch mounting/dismounting device is adapted to transport the punch between the upper rotatable disk and the upper turret disk. A die mounting/dismounting device is yet further provided for moving the die holder back and forth between a lower turret disk on the turret punch press, and the lower rotatable disk.

Abstract: A portable measuring device used for setting the shut height of the dies of a press. The measuring device includes a gauge or indicator releasably mounted on a finished surface of one of the dies. A paddle releasably mounted on a finished surface of the other die engages an indicator probe when the dies are relatively moved toward each other, to provide a measurement of the distance between the dies. This measurement is used to set the shut height of the dies.

Abstract: A press machine is disclosed for which the main components are a movable ram and a striker device connected to the ram. The striker device includes a striker for striking a tool of the press machine and a drive mechanism to adjust the position of the striker with respect to the tool.

Abstract: An upsetting press for reducing the width of rolled material, particularly for reducing the width of slabs in hot-rolled wide strip breaking-down trains. The upsetting press includes tool carriers arranged on both sides of the slab and including pressing tools which can be moved in direction of slab reduction by at least one crank drive. The crank drive and a feeding drive are arranged in a crank housing. The crank housing with crank drive and feeding drive as well as the tool carrier are combined into a structural unit. This structural unit can be displaced on a rail arrangement laterally and approximately parallel to the slab movement through a housing post window of the horizontal press stand. The unit is displaceable particularly by a displacement drive.

Abstract: Pre-loaded piezoelectric actuators provide improved work piece displacement, frequency of repetition, accuracy and repeatability. Actuators may use a coil spring providing a compressive force adequate to substantially fully compress a laminated piezoelectric element on a non-destructive basis. Upon activation, a pre-loaded actuator delivers a full workpiece drive stroke because piezoelectric element axial compression has previously occurred. Pre-loading methods and pre-loading to damp out element oscillation are also disclosed.

Abstract: A method for automatically adjusting die height in a press having a plurality of dies aligned in a work transfer direction includes a load pattern setting member for inputting possible load patterns, each pattern corresponding to the number of dies under load. A correction setting member is provided for inputting an amount of correction (compensation) by which the position of the bottom of the slide in each load pattern is rectified to a basic position corresponding to a basic load pattern. A pattern identifier is provided for identifying the current load pattern when the slide is at a given position. A correction controller is provided for selecting the proper amount of correction of the position of the bottom of the slide for the identified load pattern and sending a drive control signal corresponding to this amount to a slide position adjustment unit.

Abstract: Disclosed is a method and an apparatus for cambering a leaf spring by pressing a heated leaf spring element or member between a pair of molds, characterized in that the pair of molds each comprises a plurality of mold fingers which can be advanced or retracted relative to the opposite mold by operating a plurality of drive means connected to the plurality of mold fingers based upon a predetermined command transmitted from a control means so as to advance or retract the fingers to required heights, respectively, so that the free ends of the mold fingers as a whole may form a required mold surface; and each mold finger is locked by a releasable locking means. The cambering apparatus may further comprise a tempering section, in which the pair of molds, together with the cambered leaf spring, are designed to be immersed within the tempering liquid contained within a liquid tank so as to effect tempering of the cambered leaf spring.

Abstract: The invention provides an automatic replacement system for automatically and efficiently replacing a bar cutter and a material transfer unit as well as all or part of plural dies and punches attached to a multi-stage press forming machine. The automatic replacement system includes a carrier for conveying tools between a multi-stage press station A including plural dies and punches and tool replacements stations B and C disposed in the vicinity of the press station A; first engagement means for detachable connecting a jig for conveying dies or punches with a material transfer unit; and second engagement means for detachable connecting the carrier with a bar cutter.

Abstract: A die set having first and second dies is provided with first and second handles for carrying the die set. The first and second handles are each pivotally connected to the second die by a pin. First and second latches maintains the first and second handles at a carry position and from inadvertent pivotal movement. Each latch is releasable to permit axial movement of the handles relative to the pins and thus free the first and second handles for pivotal movement to a position at which the handles are free from interfering with connection to a ram of a press. A support is provided for maintaining the first die at a preselected position relative to the second die and from inadvertent movement relative to the second die. A lever enables rocking of the first die relative to the second so that connection to the ram of the press is easily achieved.

Abstract: For replacing pressing dies (7) in an upsetting press (1) used for width reduction of rolled material, such as for reducing slab width in hot rolled wide strip shaping trains, the width reduction is effected by the pressing dies (7) held in die carriers (8). The pressing dies (7) face one another and are located on the opposite sides of the slab. The die carriers (8) are moved in the reduction direction by a drive system (11) and are guided in a horizontal press stand containing stand beams (6). A displacement trolley (19) having a hoisting frame (20) including a hoisting drive (21) with a support mounting (22) on the hoisting frame (20) for receiving a pressing die (7). The apparatus is arranged for completely automatic replacement of the pressing dies (7). In addition, a movable carrier trolley (23) with a least one depositing location (24, 25) for a pressing die is provided for receiving worn pressing dies and for supplying replacement pressing dies.

Abstract: A press brake has upper dies and lower dies so as to be capable of attaching and detaching with an upper die exchange apparatus and a lower die exchange apparatus to a machine body of the press brake. And, the upper die and the lower die comprise the combination of divisional die chips. The storing of dies is performed with those die chips. And, the face width of the upper die chips is determined and combined according to size of a workpiece to be processed from the upper die chips.

Abstract: Mechanical forming apparatus and method for manufacturing planar contact projections for a flexible circuit is disclosed. A forming die includes a punch assembly configured for mating with a die plate. The punch assembly comprises a pin plate coupled to a punch plate and configured to hold adjusting pins and forming punches, respectively. Each forming punch has a tail with a contoured tip that conforms to the geometry of a desired contact projection. The die plate has a plurality of cavities configured and dimensioned for receiving the tail tips of the punches. In operation, the punch assembly and die plate are placed in a die set and installed in an open position in a punch press with a flexible circuit positioned therein. When activated, the press closes the die set, causing the punch tails to push against the flexible circuit, while circuit material flows into the die plate cavities. As the cavities fill, any excess material is compressed into peripheral areas of the die plate surrounding the cavities.

Abstract: An improvement is made to a die cutting press and to the method of die cutting in a press by providing two opposing and oppositely driven clamping bars which move together to clamp the die board and to accurately position the clamped die board at a predetermined location within the press. The press is operated to determine the adequacy of the cut produced by the die in sheet material fed into the press. If the cut is unsatisfactory, the opposing clamp bars are quickly driven apart thereby releasing the die board. The die board can be removed from the press and then manipulated or modified to cure any imperfection in the cut. The modified die board is then reinserted into the press and accurately repositioned at the predetermined location within the press by driving the opposing clamping bars towards each other against the die board.

Abstract: This device assists with the disengagement from and installation of a press brake die on a press brake. It includes a die receiving and holding device having a surface along which are located a number of spaced apart openings, each opening terminating at the surface of the press brake, adjacent to any press brake die which is in the press brake. Devices for engaging the bottom of a die are located within each opening, normally below the surface, but capable of movement out of the opening and above the surface. When the devices for engaging the die are moved out of their openings they engage the bottom of any die which is present, and move it away from the surace of the press brake. The system includes a mechanism for activating the movement of each die engaging device above the surface, and also for moving each die engaging device back below the surface of the press brake.

Abstract: A device for automatically adjusting die height in a press having a plurality of dies aligned in a work transfer direction includes a load pattern setting member for inputting possible load patterns, each pattern corresponding to the number of dies under load. A correction setting member is provided for inputting an amount of correction (compensation) by which the position of the bottom of the slide in each load pattern is rectified to a basic position corresponding to a basic load pattern. A pattern identifier is provided for identifying the current load pattern when the slide is at a given position. A correction controller is provided for selecting the proper amount of correction of the position of the bottom of the slide for the identified load pattern and sending a drive control signal corresponding to this amount to a slide position adjustment unit.

Abstract: A press brake has upper dies and lower dies so as to be capable of attaching and detaching with an upper die exchange apparatus and a lower die exchange apparatus to a machine body of the press brake. And, the upper die and the lower die comprise the combination of divisional die chips. The storing of dies is performed with those die chips. And, the face width of the upper die chips is determined and combined according to size of a workpiece to be processed from the upper die chips.

Abstract: A method and apparatus for changing dies on a moving bolster for a press including a control circuit in combination with a cam-actuated deceleration valve. A ramp is located at a predetermined location along a path for the moving bolster. Upon reaching the ramp location when the bolster is moving toward the press, the deceleration valve is actuated to inhibit and shut off a flow of air to air-operated motors on the bolster. Thereupon, the moves to a stop at a predetermined location relative to the press.

Abstract: A turret punch press includes an upper and lower turrets for respectively supporting a plurality of punches and dies; the punches are arranged two-dimensionally in a punch mounting regions on the upper turret and the dies are arranged two-dimensionally in a die mounting region on the lower turret. The turret punch press further includes a ram and a striker for striking the punches. The striker is provided on a bottom of the ram so as to be movable in two horizontal directions above the punches indexed in a processing region. In the turret punch press, when the turret is indexed in the processing region, many punches and dies are simultaneously indexed in the processing region. Thus, by moving the striker in two horizontal directions above the punches indexed in the processing region, many successive punch operations can be quickly performed without intermediate rotation of the turrets.

Abstract: In conventional fabrication manufacture the thickness of the steel plates are often determined by the metal section required at the weld joints. The subject apparatus and method overcomes this problem by selectively forming a thickened edge along the edge of a thinner steel plate which can now be limited to the thickness required to withstand the stresses on the fabrication. The thickened edge is produced by passing a plate supported on a table through a forming apparatus having a forming roller. The table is movable in an oblique direction relative to the plate so that the shape of the thickened edge may be varied. The forming apparatus and table are automatically controlled to produce a thickened edge of a desired shape intermittently or continuously along a linear or non-linear edge of the plate.

Abstract: A press machine comprising: a slider which reciprocates between its top dead point position and bottom dead point position; a stationary bolster; a position adjusting mechanism for adjusting an up-and-down relative position between the slider and the bolster; a bottom dead point position detecting mechanism for detecting a position of the slider held in the bottom dead point position; a moving body on which the bottom dead point position detecting mechanism is supported and which is movable in the directions in which the slider reciprocates; and a follow-up mechanism connected to the position adjusting mechanism so that the moving body can follow up a position adjustment movement of the slider, the bottom dead point position detecting mechanism being moved so that it can follow up the position adjustment movement of the slider.

Abstract: The invention provides an automatic die changing system for a power press with at least one carrier for transporting dies to and from a selected location in the press. The carrier is supported on a set of wheels, which are driven by at least one AC induction motor. An adjustable frequency AC motor drive supplies an AC frequency and voltage to the AC induction motor to control the speed of the motor and therefore the speed of a horizontal movement of the carrier into or out of the press. The speed of the carrier may be rapidly increased by increasing the AC frequency supplied to the motor on the individual wheels. A proximity detector signals the motor drive to trip a dynamic braking resistor, which electronically changes the phase order of the motors to reverse the direction of motor rotation, to decelerate the carrier in order to locate the carrier in the proper position.

Abstract: A progressive former having quick-change tooling provides tooling supports with means for adjusting the tools. The tooling is mounted so that the tooling and the structure for adjusting the tooling can be removed as units without loss of the fine-tuning of the adjustments and so that reinstallation does not require readjustment of the tooling. A transfer also provides adjustable cams for opening and closing gripper fingers which transport workpieces from one work station to the next. The adjustable cams are removable with the dies as units and can be reinstalled without further fine-tune adjustment. With the invention, entire tool sets can be changed in a very short time to eliminate loss of production capacity of the machine. Similar sized machines are provided with a fixed spacing between the locating surfaces for the stationary dies and the reciprocating tools so that tool sets having adjustments fine-tuned in one machine can be installed in a similar machine without further retuning of the adjustments.

Abstract: The invention relates to a press such as a folding press and a deep-draw press comprising a press frame with a lower yoke and an upper yoke which are mutually reciprocally movable, wherein the lower yoke and the upper yoke are each provided with co-acting tools and wherein between a yoke and its tool are arranged a curve forming device which comprises a series of curve-forming wedge pairs which lie distributed over the length of the yoke between the yoke and the tool, wherein each curve-forming wedge pair is provided with an apparatus for adjusting the mutual position of the curve-forming wedges of a curve-forming wedge pair.

Abstract: A die cart adapted to be used for the removal and installation of a cut-off die set from the carriage of a cut-off press. Whereby a slide member operating on a set of guide rails mounted to an independent frame and driven by a drive screw assembly is coupled to the die set. The drive screw assembly is then rotated to pull the die set off the carriage of the cut-off press onto the die cart and the die cart is then removed. Further, the guide rails are pivotal about a point on the frame to enable the die cart to install and remove cut-off die sets secured from the inclined carriage of a cut-off press.

Abstract: A stamping tool for use in an auto-indexable tool station having a number of character inserts that can be rotatably moved below a striker area so that a thin metal plate or sheet of metal may be marked. The stamping tool allows for automatic adjustment of tool length for any variation in material thickness. A pneumatic cylinder actuates a mechanism that engages the key way in the head nut. The tool length is changed by the rotary motion of the auto-indexable tool station. The character housing is rotated by the indexable tool station through the punch key which moves the selected character insert to the striker area within the tool. The striker area causes the character insert which is spring biased to protrude lower than the character inserts that are not in the striker area. When the stamping tool is struck by the ram, only the character insert in the striker area will contact the material to be marked.

Abstract: In the punch press of the present invention, a head portion to which are loaded punch and die (tools), a tool receiving portion for receiving a plurality of tools therein, and a tool changer disposed therebetween to effect the delivery of tools, are provided integrally, and the tool receiving portion is formed around a throat so as to be rotatable in a direction in which it intersects the axis of the throat, the throat functioning to support upper and lower frames.

Abstract: A bending press comprising a lower frame member, an upper frame member mounted above the lower frame member, tool holding means positioned in operative association with one of the frame members for holding bending tool means, die holding means positioned in operative association with the other of the frame members for holding die means, a plurality of first hydraulic rams mounted in laterally spaced relationship to be operative between the tool holding means and the associated frame member, a plurality of second hydraulic rams mounted in laterally spaced relationship to be operative between the die holding means and the associated frame member, the first hydraulic rams being adapted to be hydraulically connected together during use for hydraulic fluid to distribute a load applied to a workpiece during use evenly between the first hydraulic rams and provide compensation for frame member deflection during use, and the second hydraulic rams being adapted to be hydraulically connected together during use for hydr

Abstract: In an apparatus and a method for replacing a working-object of a processing machine, there are provided a working-object replacing support (6), a working-object moving passage (12) and a push/pull drive means (18) for the working-objects (5a)(5b).The push/pull drive means (18) is provided with a push/pull drive device (19), a push/pull engaging member pedestal (20), a push/pull transmission member (21), a guide rail (22) and a push/pull engaging member (23).An engaging portion (59) of the engaging member (23) is adapted to be shifted to a position lower than height positions of lower surfaces of engaged portions (25)(26) of the working-objects (5a)(5b) under the changed over condition to the disengagement position (Y) and at least to face upward so as to be engaged with the engaged portions (25)(26) from below under the changed over condition to the engagement position (X).

Abstract: A device is provided for crimping a coupling on the end of a hose. The device has a die assembly for holding the hose and coupling spaced apart from and in axial alignment with a crimping mechanism comprised of a hydraulic cylinder and a pusher. The cylinder has an internal stop. A fluid operated actuator mechanism moves the crimping mechanism axially downward to engage the die assembly. The device has an adjusting mechanism for adjusting the crimping mechanism in a predetermined relationship to the die assembly. The crimping mechanism and the adjusting mechanism cooperate so that when the crimping mechanism engages the internal stop, the coupling is crimped to the hose end in accordance with the predetermined relationship. The adjusting mechanism contains an angular scale and a linear scale both with marked divisions. The adjusting mechanism provides for easy recalibration of the device.

Abstract: Apparatus and a system for changing die sets in stamping presses including movable die set support carts which are positioned in a remote pre-staging or loading (and unloading) area when the presses are being used for stamping and which are positioned adjacent the presses to load a new die set into the press from one cart and to simultaneously unload an old die set from the press to another cart during a die set changing procedure.

Abstract: In a stamping operation using several presses, a new group of dies must be substituted for an old group of dies in a rapid manner for efficient use of the press line. A method for rapid exchange of dies includes: loading and unloading a die sets on to and off of transporter carts in a remote area from the presses to permit press operation during this time; moving the carts and new die sets into positions adjacent the presses; simultaneously moving an old die set out of a press and onto the cart and moving a new die set off of the cart and into another adjacent press.

Abstract: A collet surface structure is provided for a high-speed hydraulic press having collet interlock in order to eliminate leakage of oil into the clamping region. Furthermore, the formation of a harmful hydrostatic film thickness from the lubricating-oil film between the pressure rods and the collets is prevented, since the oil is immediately forced away due to the high clamping pressure between the clamping faces. These high clamping pressures result from the extremely short space of the lubricating-oil elimination grooves and the large capacity of the grooves. Thus, the oil-eliminating grooves are made large enough to eliminate reliably a hydrostatic oil film of at least 0.1 mm. This regularity is independent of the clamping diameter of the collet.

Abstract: Conventional press brake female dies which have to be manually adjusted are not adaptable to today's automated factories for producing different shaped components on a demand basis. The subject apparatus overcomes this problem by providing powered, adjustable female die jaws that are positively located by powered rotary shims having several thicknesses to be presented according to the desired opening between the jaws. The power source for adjusting the jaws and the rotary shims may be controlled electronically to adjust the jaws to a position to produce a prescribed shape from a plate of metal.

Abstract: A press that includes a frame which bears a bending device that includes an upper tool and a lower tool which can be moved in a mutually reciprocal manner. The press also includes a curve-forming element for forming a curve on the bending device. The curve-forming element has curve-forming members slidable over each other in a lengthwise direction and a transverse direction and making contact with each other. The contact surface of the curve-forming members in the lengthwise direction and the transverse direction of the bending device possess the respective determined angles of slope .alpha. and .beta.. The press has an element for adjusting the curve-forming members in the lengthwise direction and the transverse direction, wherein the curve-forming members adjoining each other at the sides preferably form a curve-forming strip which extends substantially over the whole length ofthe bending device. This curve-forming strip is preferably provided with a number of discrete contact surfaces.

Abstract: In a method of mounting and demounting at least two, upper and lower dies to and from a press molding machine, a workpiece is inserted into a press position between the upper and lower dies. The workpiece is then pressed or stamped at the press position by the upper and lower dies. The upper and lower dies are maintained at the press position to leave the workpiece after having been pressed or stamped, at the press position between the upper and lower dies. The upper and lower dies are mounted and demounted to and from the press molding machine, with the workpiece maintained at the press position between the upper and lower dies.