Abstract: The bending machine (100) has an upper beam (211) and a lower beam (212), each of the beams (211, 212) having a clamping element extending therefrom adapted for clamping an elongated flat sheet metal workpiece (218) with a portion extending from the machine in cantilever fashion. Bending tool carriers (221, 222) having a bending tool (223, 224) extending therefrom are movable relative to the beams so that the bending tool (223, 224) can extend and pivot to form an elongated bend in the workpiece (218). A plurality of wedges (251, 252) are selectively extendable between the beams (211, 212) and the carriers (221, 222) to provide uniform depth of the bend in the workpiece (218) along the length of the bend, the depth of extension being adjustable with ball screws (261, 262) attached to synchro or servomotors (265, 266).

Abstract: An integrated molding device suitable for the bending and hemming of a flat sheet, comprising a stand, a worktable, a slider, and a turning beam. The stand comprises a frame structure composed of an upper cross beam, a lower cross beam, and columns on both sides, two ends of the slider are connected to the columns on both sides by means of a pair of sliding pairs A respectively, and the clutching of a bending die is achieved by means of the linear movement of the sliding pairs A; the worktable is fixed on the lower cross beam, and the clutching of a pressing die is achieved by means of the linear movement of the sliding pairs A; two ends of a swing frame are connected to the columns on both sides by means of one connecting block respectively, the connecting block and the columns are connected therebetween by means of a pair of rotating pairs B, and the connecting block and the swing frame are connected therebetween by means of a pair of sliding pairs C.

Abstract: A shaping method making use of shaper tooling suitable for high-temperature shaping of a preformed metal part having two side fins extending from a nose, the method including putting the preformed metal part into place in a first bottom die of the tooling, holding the preformed metal part in a first determined position with a first movable central insert, forming one of the side fins of the preformed metal part into its final shape in alignment with the nose by moving with a first movable top die, turning over the preformed metal part, putting the preformed metal part into place in a second bottom die of the tooling, holding the preformed metal part in a second determined position with a second movable central insert, and shaping the other side fin into its final shape in alignment with the nose by moving with a second movable top die.

Abstract: A processing machine for performing a bending operation on a workpiece includes a die, a punch movable in a first direction for pressing the workpiece against the die, a slide member movable in a second direction perpendicular to the first direction, a first cam device that moves the punch toward the die for deforming the workpiece when being actuated by movement of the slide member, a second cam device that moves the punch for pressing a surface of the workpiece when being actuated by movement of the slide member. The pressure angle of the second cam device is smaller than a pressure angle of the first cam device. The processing machine further includes a drive member configured to move the slide member such that the second cam device is actuated after the first cam device is actuated.

Abstract: A panel bender (10) designed for making bends on sheet metal sheets (13) comprises a substantially C-shaped main structure (11) equipped with a fixed element (12) and a mobile element (14) designed to support and clamp in a preset position a sheet metal sheet (13) to be bent, and also comprises a substantially C-shaped blade holder structure (16) connected to the main structure (11) and mobile in space inside this by means of a series of vertical guides (15) at right angles to the plane of the sheet metal sheet (13) to be bent. The blade holder structure is equipped with an upper blade (26) and a lower blade (27) designed to enter into contact with the surface of the sheet metal sheet (13) to be bent clamped between the mobile and fixed elements (12, 14) of the main structure (11) and to deform the sheet metal sheet by means of a movement with a programmable trajectory.

Abstract: A crust bending apparatus includes a positioning assembling and a bending assembly. The positioning assembly includes a conveyance cylinder, a conveyance block, a positioning cylinder, a positioning rod, a positioning block, a holding cylinder, a holding rod, and a holding block. The bending assembly includes a bending cylinder, a bending rod, a bending block, first and second pivot pins, a line-to-rotation conversion member, and an outer casing. The bending rod has an end coupled to the bending cylinder and an opposite end forming a projection having a circular cross-section on a side surface thereof. The projection is received in a position constraint slot defined in the line-to-rotation conversion member. The apparatus is operated with power cylinder based mechanisms to replace human labor in bending a metal crust in order to reduce undesired influence of human factor and also to realize stable assembling operation and improve product passing rate and throughput.

Abstract: A bending machine designed to bend and shape sheet metal comprises a blade-holder unit (10) with a “C” shaped cross-section, mobile along two mutually orthogonal directions with respect to a fixed bed, and on which one or more bending blades are fixed. This machine comprises a kinematic system for driving the operating units, in which servomotors (15, 21, 22) and epicyclical reduction gears are used for the movement of the blade-holder unit (10). Moreover, the blade-holder unit (10) of the bending machine uses an articulated mechanism consisting of two mechanical units (13, 14) which form a closed kinematic chain with five members connected by five kinematic turning pairs.

Abstract: Improved sheet-metal working machine comprising at least one manipulator for manipulating metal sheets (25), characterised in that the manipulator is provided with at least one stop surface (22-24) against which sheet-metals (25) which are manually supplied can be positioned.

Abstract: The machine (20) comprises: a supporting structure (24, 26); a movable unit (28) mounted on the supporting structure (24, 26) so that it can translate along a first working direction (Z) and along a second direction (X) towards and away from a stationary workpiece-carrying structure (88); a tool-carrying unit (10, 11, 12) carried by the movable unit (28); and a driving system for controlling the movement of the movable unit (28) in the working direction (Z). The driving system includes a first motor unit (60) for controlling the rotation of a driving shaft (62) and a mechanism for converting the rotational movement of the shaft (62) into the translational movement of the movable unit (28). The motion conversion mechanism comprises a cam member (76), which is rotatably mounted on the movable unit (28) and the rotation of which is controlled by the driving shaft (62), and a roller member (78) which is rotatably mounted on the supporting structure (24, 26) and on which the cam member (76) rests.

Abstract: A lower platen is provided with a hem punch and a slide cam. The hem punch is floating-supported to the slide cam. An upper platen is provided with a hem punch driver cam and a liner. The hem punch driver cam is used to change the hem punch to a pre-hemming position and to a final hemming position. The liner applies a processing load to the hem punch being in the final hemming position. By moving the hem punch to which the processing load is applied from the liner, a final hemming part of the hem punch is pressed against a bent portion of the workpiece.

Abstract: A pre-hemming apparatus for use with a hemming die includes a driving member adapted to be centrally disposed below the hemming die. A plurality of link arms are operatively, pivotally connected to the driving member. A lever arm is operatively connected to each link arm. A flanging member is operatively connected to each lever arm at an end thereof. A plurality of mounts for supporting the lever arms are adapted to be mounted to a side of the hemming die. Each lever arm is pivotally connected to one of the mounts intermediate ends of the lever arm. An actuator is operatively engagable with the driving member. Actuation of the driving member moves the flanging members towards the hemming die through the lever arms and the link arms for pre-hemming, and away from the hemming die cycling the apparatus.

Abstract: A plate bending machine for bending a plate clamped between a lower die and a pressure die by a blade of a bending die mounted on a bend beam which is controlled in the vertical and horizontal directions. The bend beam has a vertical cross-section of substantially C-shaped configuration, and includes a first bending die attached to an upper portion of the substantially C-shaped configuration and a second bending die attached to a lower portion of the same. Blades are formed on at least one of the first and second bending dies to extend in the upward and downward directions, respectively. The horizontal bend arm may be connected to one end of a vertical bend arm which is disposed substantially vertically, by a shaft B (eccentric shaft).

Abstract: A metal shaping apparatus to shape a metal blank into one of a plurality of configurations comprising a radius die including at least one substantially cylindrical die section having a plurality of metal blank receiving channels or slots formed therein to receive and shape the metal blank into one of the plurality of configurations.

Abstract: Method and device for bending a portion of an element in a bending machine (12) comprising a bending assembly (14), a supporting plane (18) and an electronic processing unit (32), wherein the bending process is filmed and displayed on a screen (36). The portion (24) is bent with a first movement of the bending assembly (14) to make a first bend of a nominal value. By means of reference indicator elements an angle of deviation is determined and the portion is again bent with a new movement of the bending assembly (14), taking into account the angle of deviation. All movements of the bending assembly (14) are acquired by a position transducer (15) and recorded by the electronic processing unit (32) in order to have a global parameter for obtaining an angle which corresponds to the nominal value, and in order to use the global parameter in subsequent analogous or similar bends.

Abstract: A C-shaped frame is movable in a direction in which the C-shaped frame is adjacent to and away from a workpiece having an outer panel and an inner panel assembled with each other. After the C-shaped frame is advanced and a pre-hemming punch is advanced by a swing cylinder provided at the C-shaped frame, a hemming die is raised by a lifter hydraulic cylinder provided on a lower portion of the C-shaped frame and a flange of the outer panel is provisionally hemmed. Then, after retreat of the pre-hemming punch following lowering of the hemming die, the hemming die is raised again and a final hemming is conducted between the hemming die and the hemming punch.

Abstract: A bending device has one or more bending tools and each bending tool has one or more adjustable bending jaws and one or more stationary bending jaws for producing a fold on a sheet metal plate. The adjustable bending jaw is pivotably supported on the stationary bending jaw so as to be pivotable about a pivot axis. The adjustable and stationary bending jaws have end faces and bending strips arranged in the area of the end faces. The bending strips in an initial position of the adjustable and stationary bending jaws delimit an opening angle having a bisecting line intercepting the pivot axis. At least one joint connects the adjustable bending jaw and the stationary bending jaw to one another. At least one adjusting device engages the adjustable bending jaw and is supported on the stationary bending jaw for adjusting the adjustable bending jaw.

Abstract: A hemming machine having a stationary base and defining a work station. A lifting beam is vertically movably mounted to the base at the work station while a motor assembly moves the lifting beam between a raised and a lowered position. Two die cartridges, each having hemming tooling and a nest vertically movably mounted to the die cartridge, are horizontally movable relative to the base by a conveyor assembly. A conveyor motor selectively moves the die cartridges between a position laterally spaced from the work station and the work station. With the die cartridge positioned at the work station, a first clamp releasably secures the nest to the lifting beam while a second clamp assembly releasably secures the die cartridge to the base. With the nest secured to the lifting beam and the die cartridge secured to the base, hemming operations are performed at the work station in the conventional fashion.

Abstract: A hemming machine is disclosed having a base, a nest adapted to support a part to be hemmed, a nest carrier which supports the nest and in which both the nest and nest carrier are vertically movably mounted to the base. At least one hemming die is laterally slidably mounted to the base and movable between an extended position in which the die overlies a portion of the nest, and a retracted position in which the die is spaced laterally outwardly from the nest. A lock unit selectively locks the nest carrier against vertical movement relative to the base in at least one, and preferably two positions, so that, with the nest carrier locked against movement relative to the base, inflation of a hydraulic bladder sandwiched between the nest and nest carrier displaces the nest vertically upwardly from the carrier so that the part carried by the nest is compressed against the hemming dies and performs the hemming operation.

Abstract: A hemming machine is disclosed having a base, a nest adapted to support a part to be hemmed, a nest carrier which supports the nest and in which both the nest and nest carrier are vertically movably mounted to the base. At least one hemming die is laterally slidably mounted to the base and movable between an extended position in which the die overlies a portion of the nest, and a retracted position in which the die is spaced laterally outwardly from the nest. A lock unit selectively locks the nest carrier against vertical movement relative to the base in at least one, and preferably two positions, so that, with the nest carrier locked against movement relative to the base, inflation of a hydraulic bladder sandwiched between the nest and nest carrier displaces the nest vertically upwardly from the carrier so that the part carried by the nest is compressed against the hemming dies and performs the hemming operation.

Abstract: A modular system for seaming and a headstock to perform it, that has a structure, a table (2) and a cradle (1) on which the parts to be machined are supported. It includes a slide that moves in a linear manner (6) and that includes the tools, which are mounted on a tool holder that turns on a shaft on the body of the moving slide, and towards the parts to be seamed. It permits the seaming of both internal and external contours.

Abstract: A flanging or hemming device (1) is provided with an external flanging unit (6) and/or an internal flanging unit (7) as well as a clamping device (3). The clamping device (3) has one or more leading pressing and clamping elements (71) which are movable or deformable and can be adjusted in accordance with the place or time and/or force with which they act on the workpiece or work-pieces (9). The pressing and clamping elements (71) are notably elastically deformable. They can also comprise a spring (72) or be fluidically pre-stressed.

Abstract: There is described a new bending and squeezing blade for sheet metal bending machine. The blade comprises a bending tooth provided with a head surface that is suitable to engage the edge of a sheet metal to carry out its bending at 90° and with a foot surface that is suitable to engage the 90° folded edge of the sheet metal to carry out its additional bending at an angle greater than 90° and its possible squeezing on the remaining part of the sheet metal up to an angle substantially equal to 180°. In order to assure the locking of the sheet metal during the operation of squeezing the machine preferably comprises a blank holder provided with a pressing member, that can be controlled so as to project from the support foot of the blank holder in order to lock the sheet metal on a fixed counter blade.

Abstract: A two-stage hemming machine has a centrally located press station with an anvil extendable along a vertical axis, and a loading station and an unloading station located on opposite sides of the press station. Separate first and second dies slide on horizontal tracks mounted above the press, the first die movable therealong between the loading station and the press station, and the second die movable between the unloading station and the press station. The dies shuttle back and forth, in unison, between the press station during a production cycle wherein a component to be hemmed is loaded into the first die in the loading station, is carried into the press station along with the first die where the first stage of the hemming operation occurs, and remains on the anvil as the anvil is lowered. The first die then returns to the loading station as the second die moves into the press station.

Abstract: There is described a new bending blade for sheet metal bending machine, that in order to allow the bending of the sheet metal both upward and downward comprises two bending teeth extending from a single body of blade in directions orthogonal to each other. One of the two teeth extends substantially upward for the execution of upward bending, while the other tooth extends substantially in horizontal direction for the execution of downward bending.

Abstract: A modular system for seaming and a headstock to perform it, that has a structure, a table (2) and a cradle (1) on which the parts to be machined are supported. It includes a slide that moves in a linear manner (6) and that includes the tools, which are mounted on a tool holder that turns on a shaft on the body of the moving slide, and towards the parts to be seamed. It permits the seaming of both internal and external contours.

Abstract: A hemming apparatus comprises a main die configured to supports panels to be hemmed together. The main die is raised and lowered between a home position and a hemming position by a drive using a fixed cam and a moveable cam. The apparatus also includes a hemming die assembly having a pre-hemming and final hemming die block mounted on a frame. An electromechanical motor assembly drives the frame along an inclined path. Shot pins are provided to lock the frame into positions for pre-hemming and final hemming. The frame travels along ways and surfaces associated with frame travel are hand scraped to provide a precision movement of the frame for accurate and consistent hemming operations.

Abstract: A modular system for seaming and a headstock to perform it, that has a structure, a table (2) and a cradle (1) on which the parts to be machined are supported. It includes a slide that moves in a linear manner (6) and that includes the tools, which are mounted on a tool holder that turns on a shaft on the body of the moving slide, and towards the parts to be seamed. It permits the seaming of both internal and external contours.

Abstract: An edging device or hemming device is disclosed with a machine frame (1), an edging bed (2) which is positioned inside said frame where it is raised and lowered with an edging lift and/or a displacement lift. A plurality of edging jaws are provided, which can be moved into the working area of the edging bed (2). Drive mechanisms are provided for the edging bed (2) and the edging jaws (3). The drive mechanisms for the edging lift and the displacement lift are configured as electromechanical drive mechanisms (7) which move the edging bed (2) using driven eccentric cams (12) or cranks. This simplifies the control of the drive mechanisms and reduces the masses of the structural parts being moved.

Abstract: A device that includes a frame equipped with guiding means, blank holder modules to be moved along the guiding means, means for blocking independently each blank holder module in a specific position, a magazine of end modules located near each end of the guiding means and gripping and handling means for grasping an end module to fix the end module to a blank holder module and vice-versa.

Abstract: Guide means interposed between a blade-holder (20) and the frame (12) of a bending press comprise a slide (40) slidable along an axis (Z) perpendicular to the plane of the metal sheet (P) to be bent. The blade-holder (20) is coupled to the slide (40) so as to be slidable along an axis inclined to a plane perpendicular to the plane of the sheet (P). First means (38) for bringing about movements of the blade-holder (20) along the axis perpendicular to the plane of the sheet (P) are interposed between the frame (12) and the blade-holder (20). Second means for bringing about movements of the slide (40) along the inclined axis are interposed between the slide (40) and the blade-holder (20) in order to produce movements of the blade-holder (20) towards and away from the blank-holder (16, 18), parallel to the plane of the sheet (P). These movements can be brought about in preselected combinations, preferably under the control of a numerical-control device.

Abstract: A metal forming machine includes a moveable central pillar, a slidable blade assembly mounted to the pillar for reciprocating movement therewith, and a fixed slide plate mounted to a stationary block secured to the pillar. A moveable or slideable blade holder of the blade assembly and having a ramped wall carries a blade or forming element mounted thereto. Respective wear plates mounted to the slide plate and blade holder contact each other during movement of the pillar. A blade or forming element secured to the slidable holder contacts metal to be formed or pierced. The stop block assembly associated with the slidable blade holder limits movement of the blade in a first direction such that continued force applied thereto during movement of the pillar causes movement of the blade or forming element in a second direction transverse to that of the first direction.

Abstract: A hemming machine of the type having a base, a nest for supporting a sheet metal part to be hemmed, and at least one die is disclosed in which the nest supporting the part to be hemmed is vertically displaced against the dies in order to form the hem. The improvement includes at least three elongated and external shafts wherein each shaft has one end rotatably mounted to the base so that the shafts are spaced apart and parallel with each other. A nut threadably engages each shaft, and these nuts are swivelly secured to the nest which permits a small amount of angular and radial deflection of the nut and shafts during movement of the nest from its lower to its upper position.

Abstract: The movable blank-holder (16) of a bending press comprises a series of sections (26, 28) and a pair of motor-driven carriages (42) each of which has an entraining member (44) which can selectively engage and release the sections (26, 28) in order to move them for re-arrangement purposes. Each of two sections (28) situated at opposite ends of the series comprises a shoe-holder body (48) which supports a respective shoe (50) by means of inclined guides. Each shoe-holder (48) carries a respective slide (56) having a driving portion (60) and each shoe (50) has a driven portion (64). These driving and driven portions have formations (62, 64) cooperating with one another directly with a shaped coupling with a single degree of freedom, arranged in a manner such that movements of the slide (56) are converted into oblique movements of the respective shoe (50) for releasing it from and engaging it with a lateral channel-shaped bend which has already been made in a sheet-metal panel, without sliding on the panel.

Abstract: A device for hemming of sheet metals, particularly of coachwork sheet metals for small-lot production series in automobile manufacture is disclosed. A ram with a superimposed hemming bed is arranged in a base rack presses the sheet metals to be hemmed against the hemming jaws of the pre-hemming and/or finish hemming tools. One or more hemming jaws (8, 8') are affixed to a rotary head (4) lying opposite to the ram (2) and are swingable by turning the rotary head (4) in working position. Moreover, the invention provides for that the hemming bed (5) is linearly traversable or swingable in horizontal plane between a loading point (B) and a working point (A).

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 device for hemming of sheet metals, particularly of coachwork sheet metals in automobile manufacture, wherein a driven ram with superposed hemming bed arranged in a base rack presses the sheet metals to be hemmed against stationary hemming tools. The working stroke and the force for hemming of sheet metals is pneumatically transmitted to ram by the aid of a compressed-air cushion arranged between base rack and ram.

Abstract: An apparatus constructed to be received within an interior opening of a sheet metal panels to form a pre-hem and a complete hem about the periphery of the opening with a plurality of generally radially outwardly movable hemming plates or steels which are driven by an actuator to move from a retracted position within the opening to an extended position overlying a portion of the periphery of the opening to pre-hem a flange about the periphery of the opening. With the hem steels in their extended position, a second actuator displaces the steels towards the sheet metal panels to complete the folding or final hemming of the flange about the periphery of the opening.

Abstract: A bending apparatus includes: an upper bending die 63U for downward bending both ends of the plate material gripped between upper and lower plates 59U and 59L provided on upper and lower frames 35U and 35L, respectively and a lower bending die 63L for upward bending both ends of the same plate material; and upper and lower bending mechanisms each including a link mechanism for moving the upper bending die or the lower bending die in both upward or downward direction, respectively. In the bending apparatus according to the present invention, since the upper and lower bending mechanisms 61U and 61L are constructed by a link mechanism, respectively, it is possible to move the upper or lower bending die 63U or 63L far away from the bending position of the plate material W.

Abstract: The bending press is of the type comprising a movable blank-holder formed by a series of sections in which two spaced-apart sections are in the form of shoes (34) with projections (36) pointing in opposite direction so that each can be engaged in a channel-shaped bend which has already been made. Each shoe (34) is supported by a shoe-holder body (38) by means of inclined guides (40) by virtue of which, when the movable blank-holder moves away from the fixed blank-holder, the two shoes (134) move towards one another in order to release their projection (36) from the channel-shaped bends.

Abstract: Machine used for folding, profiling and cutting metal sheets includes a fixed support structure (1) holding a lower presser element (3), on which the sheet (4) rests, and an associated upper mobile presser element (5). Together, the presser elements (3, 5) keep the sheet (4) pressed in a proper horizontal plane. The machine further includes a mobile structure (7) having a C-shaped cross section which defines a channel (2) of longitudinal orientation. This C-shaped structure holds a pair of holding blades (8-9) which perform the folding of the sheet (4) when the same C-shaped structure is raised and lowered or made to advance or withdraw with respect to the sheet (4). In the interior of the channel (2) at least one removable tool holding group (10-11) is situated. This permits repositioning of the tool holding group along the longitudinal course of the channel (2).

Abstract: An apparatus for bending metal sheet comprises a frame (1), a stationary lower beam (2) with a lower clamp (5) and a movable upper beam (3) with an upper clamp (6). The clamps each have a clamping face for clamping a metal sheet in a working position. The apparatus further comprises a lower bending beam (13) and/or an upper bending beam (14) for bending upwardly or downwardly, respectively, a clamped metal sheet. At both sides the bending beam(s) is/are supported in the frame rotatably around an axis and independent of the upper and/or lower beam. The body of the lower or upper bending beam (13, 14) in a working starting position extends substantially perpendicular to the clamping face and the lower and upper clamps (5, 6) determine in cross-section in the working position a V-shape, the apex of which is directed towards the axis (15, 16) of the bending beam being in the working position.

Abstract: A press is described for prehemming and final hemming the internal periphery of an aperture in sheet material received on an anvil (10) on which the sheet material (12) is held down so that the upturned edge (14) of the aperture which is to be hemmed is substantially in alignment with the edge of the opening in the anvil (10). A composite hemming tool (40, 42) is provided adapted to perform prehemming and final hemming and carried b a tool carrier (36, 38). Drive means (24, 26) protrudes up from the press through the opening in the anvil so that a lower inclined leading edge (44, 46) of the tool substantially registers with the upturned edge (14) to be hemmed. The drive means operates so as to force the tool first of all towards the edge so as to bend the upturned edge over until it is bent through substantially 90 degrees from its upstanding position and thereafter to move in a generally downward direction so as to compress the downturned ege. A method of hemming is also described based on this machine.

Abstract: A bending apparatus includes: an upper bending die 63U for downward bending both ends of the plate material gripped between upper and lower plates 59U and 59L provided on upper and lower frames 35U and 35L, respectively and a lower bending die 63L for upward bending both ends of the same plate material; and upper and lower bending mechanisms each including a link mechanism for moving the upper bending die or the lower bending die in both upward or downward direction, respectively. In the bending apparatus according to the present invention, since the upper and lower bending mechanisms 61U and 61L are constructed by a link mechanism, respectively, it is possible to move the upper or lower bending die 63U or 63L far away from the bending position of the plate material W.

Abstract: A hemming machine and method of operating the machine is presented in which a work supporting anvil is vertically positioned and driven in an impact stroke by an electric servo motor. A compound flanging and hemming die is mounted on a carriage for horizontal movement into and out of alignment with the anvil for successive formation of a flange and impacting the flange into a finished hem.

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: A panel bender which can remarkably improve productivity in a bending process, and can feed in and out works having different widths with a single conveyer without causing interference between a main body and the conveyer has a construction in which a plurality of main bodies (1) are provided at opposite positions across a conveyer (16) for feeding the work (A) to a working position within the panel bender, each of the main bodies being movable in a back and forth direction with respect to the other by a back and force feeding device (13). The conveyer (16) disposed between the main bodies is adapted to expand and contract in the width direction in cooperation with back and forth movement of the main bodies.

Abstract: A device for moving blades of a press used for bending sheets, has blades supported and placed in motion by a bending block which is movable in the vertical direction with respect to two counter blades with the sheet to be bent being placed between the two counter blades. For the purpose of imparting motion to the bending block with respect to the counter blades, there is provided a track along which the bending block rolls. There are also provided two connecting rods, the upper end of which is hinged to the lower part of the bending block. The two rods are pivoted in the lower part to an arm (7) which is placed substantially radially and which is integral with a cylinder (8). Cylinder (8) is integral with a second arm (9) which is connected with a fluid dynamic cylinder. There may also be provided a second fluid-dynamic cylinder which forms with the first fluid-dynamic cylinder a structure having cylindrical symmetry.

Abstract: A bending machine, capable of accurately bending a workpiece to a desired angle while protecting the workpiece from damage, comprises an upper die fastened to a ram, which is movable vertically and acts in cooperation with a stationary table to fix a workpiece to be bent, a bending blade selection arm which can be vertically swung by a bending blade selection cylinder and to which a downward bending beam and an upward bending beam are fastened in such a manner that the downward bending beam and the upward bending beam are able to swing while being vertically separated from each other, a downward bending blade for bending the workpiece downwardly when the downward bending beam is swung by a downward blade swing cylinder, and an upward bending blade for bending the workpiece upwardly when the upward bending beam is swung by an upward bending blade swing cylinder. Therefore, the upward and the downward bending blades do not rub the workpiece.

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: 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).