Abstract: A portable cam and lever actuated press which utilizes the substantial force available from an air spring to actuate one or more lever arms. The substantial force available from an air spring and the specialty cam system provided allows the device to perform clinching, crimping, punching, stenciling, riveting, stamping, holding, or other operations which would normally be performed with much larger and heavier equipment when the proper punches and dies are installed onto the lever arms. The unit operates pneumatically without the need for hydraulics or hydraulically assisted components.

Abstract: The present invention includes both the device and the method for utilizing two wedge shaped halves to retract a stud used to deform rivet nut material, thereby setting the rivet nut. The tool consists of two wedge shaped halves and a stud passing through both halves, extending to receive the threads of an uncompressed rivet nut. A slide screw controls the wedging action, causing the stud to retract. A stabilizing member is utilized to resist the rotational forces created during activation of the slide screw. The slide screw allows the top wedge and bottom wedge to slidably relate to one another, allowing the stud to increasingly extend beyond the bottom wedge. The extended stud threads into a rivet nut which is then passed through a predrilled hole in the material to which the rivet nut is to be fastened. Upon activation, the slide screw causes the top wedge to slide along the bottom wedge.

Abstract: The invention relates to a cotter key with an upper guiding part containing a cam element (20) and a cam guiding element (10), and with a lower guiding part containing a driver element (40), the upper guiding part (10, 20) being holdable and/or held together by at least one guiding clamp (30).

Abstract: The present invention provides a rotary cam moving apparatus of a negative angle shaping mold which can avoid an interference of rotary cams, require no canceling process in rotary cam end portions with a high accuracy, and maintain a strength in the rotary cam end portion.

Abstract: A cam-type press system is provided which includes a cam base slidably mounted on a lower die and securing a material panel with a formation pad: cam base steel is mounted on the cam base corresponding to a height of the formation cam. The cam base steel is performs a formation process on the material panel together with a formation cam. A cam slider is mounted on the cam base through a linkage assembly such that the cam slider and the cam base are able to slide. The cam slider is linked with the operation of an operational driver. First and second return assemblies are mounted respectively within the cam base and the cam slider and contacting the lower die. The first and second return assemblies exert a biasing force to return the cam base and the cam slider, respectively, to an initial position when displaced from the initial position.

Abstract: Device for actuating a slide or tappet (1) in a lifting or clamping device, especially for folding sheet metals in automobile manufacture. A slide (1) is guided in a base stand (3) and can be driven. The slide (1) supports the folding bed and presses the sheet metals to be folded against stationary folding tools. The slide (1) is supported on at least one wedge surface (7) which can be adjusted in an electromotive manner.

Abstract: A crimping tool is used to attach a metal hub plate to a plastic hub for a data storage disk. The hub is bonded to the data storage disk, and the metal hub plate allows the disk to be magnetically clamped to a spindle of a disk drive. The metal hub plate has a four tabs which are bent into respective recessed areas of the hub. The tool includes a plunger which is directed against the metal hub plate which the plate is held in a lower die assembly. The plunger includes four crimping jaws which slide against angled surfaces of the plunger. The sliding motion causes the crimping jaws to move radially inward towards each other. The lower surface of each jaw includes a cam surface and a prow. The cam surface slides against the tab, bending it to a predetermined shape, and then the prow contacts a base of the tab to bend it beyond the predetermined shape.

Abstract: A pressing apparatus provides an urging force for a slide cam to press only when necessary, and elsewhere this pressing-force is maintained as small as possible. Abnormal wear and seizure of the slide cam, slide cam base and the sliding portion of the driven cam are prevented. The pressing apparatus can also provide a larger retracting force for the slide cam near a lower dead center of a pressing stroke. The present apparatus includes a slide cam slidably provided in a guidepost attached to the slide cam base and guided by the slide cam base, a pressing member held by the slide cam, a retracting-spring between the slide cam base and the slide cam for urging the slide cam, and a driven cam for contacting and driving the slide cam. A pressing-spring for urging the slide cam only near a lower dead center of a pressing stroke is provided between the slide cam base and the slide cam and/or between the slide cam and the driven cam.

Abstract: A negative-angle forming die includes a lower die half and an upper die half. A rotary cam is rotatably provided in the lower die half, and a slide cam is slidably opposed to the rotary cam. An automatic retractor is provided in the lower die half for pivoting the rotary cam to a position allowing the work to be taken out of the lower die half after a forming operation. The rotary cam is divided into an end rotary cam and a main rotary cam which are both disposed on a same axis of pivoting. The end rotary cam is not pivoted for an initial predetermined period of the retraction, and thereafter, the end rotary cam is moved axially toward the main rotary cam.

Abstract: The present invention provides a negative-angle forming die comprising a lower die half having a supporting portion for placing a sheet metal work, and an upper die half to be lowered straightly downward onto the lower die half for forming the work, an intrusion forming portion formed in the lower die half at an edge portion near the supporting portion inward of a downward stroke line of the upper die half, a rotary cam rotatably provided in the lower die half, a slide cam including an intrusion forming portion and slidably opposed to the rotary cam, and an automatic retractor provided in the lower die half for pivoting the rotary cam back to a position thereby allowing the work to be taken out of the lower die half after a forming operation, the work placed on the supporting portion of the lower die half being formed by the intrusion forming portion of the rotary cam and the intrusion forming portion of the slide cam, the slide cam forming the work by sliding, the automatic retractor pivoting back the rotary

Abstract: A sheet fabrication machine is equipped with different servo motors for actuating its upper tool and its lower die. A direction converting mechanism is provided to each of the tool assembly and the die assembly so as to convert the non-vertical forces output by the servo motors into vertical forces that enable the tool and die to move relative to each other to effect work on a workpiece placed therebetween. The sheet fabrication machine is moreover equipped with a system and logic for automatically measuring the length of the tool and for providing a setting from which the operation of the tool can be referenced. Additional features provisioned into the sheet fabrication machine include look ahead functions for optimizing the operational speed of the machine while minimizing the noise generated as a result of the operation.

Abstract: The present invention provides a negative-angle forming die comprising a lower die half and an upper die half. The lower die half has an intrusion forming portion, a rotary cam, a slide cam, and an automatic retractor. The work is placed on the lower die half being formed by an intrusion forming portion of the rotary cam and an intrusion forming portion of the slide cam. The slide cam forms the work by sliding. The rotary cam has two ends each including a supporting shaft projecting therefrom. The supporting shafts are supported by the lower die half for rotatably supporting the rotary cam.

Abstract: Disclosed is a negative-angle forming die. The die has upper and lower halves. The upper die half has a supporting portion for receiving a sheet metal work, and an intrusion forming portion. The lower die half carries a plate-like cam which can be moved toward the lower die half for forming the work. The die also has a rotary cam, the ends of which terminate in first and second shafts journaled in the lower die half. The die also has a slide cam, which itself has an intrusion forming portion. This portion is slidably opposed to the rotary cam. The die is equipped with a cam follower arm centrally fastened to the supporting shaft. One end of the cam follower arm carries a cam follower in operable relationship with the plate-like cam carried by the upper die half. In operation moving contact between the plate-like cam and the cam follower causes the cam follower arm to rotate. This in turn causes rotation of the rotary cam.

Abstract: A radial press comprises two press yokes and eight crimping members. The yokes are arranged on a plane that is perpendicular to the press axis and are located diametrically opposite the press axis and can be moved towards each other in a straight line by means of a drive unit, whereby the direction of movement is perpendicular to the press axis. At least one part of the crimping members that are disposed in the yokes has slide surfaces that respectively cooperate with a control surface of one of the yokes or an adjacent crimping member in such a way that all of the crimping members can be moved in a uniform manner onto the press axis when the press yokes move closer to each other. Two crimping members arranged perpendicular to the direction of movement of the at least one movable press yoke are divided into two segments.

Abstract: A die block assembly includes a sliding block (50) and a die plate (70). The sliding block has a base (53) from which a pair of slanted rails (58) extends. A protrusion (61) with a vertical outer wall (62) extends from an end of the base, between the rails. The die plate defines an opening (72) for movably receiving the block. A pair of slanted guiding grooves (74) is defined in the plate, for slidably receiving the rails of the sliding block. A recess (76) bounded by a vertical inner wall (78) is defined in the plate, for movably receiving the protrusion of the block. Upon assembly, in a first position, a clearance exists between the outer wall of the block and the inner wall of the recess. In a second position, the outer wall abuts the inner wall. Thus movement of the block is limited to a predetermined range.

Abstract: A sheet fabrication machine includes a direction convert mechanism that converts the movement of the driving mechanism along one direction to drive the tool for fabricating a worksheet in another direction. The direction conversion mechanism includes a carriage plate whereon a plurality of direction convert units may be mounted. Each of the direction convert units may be configured in the form of a cam that has a number of contact surfaces each having a preset angle. The carriage plate is interposed between a drive contact, such as for example a rotating mechanism, and the ram that presses against the tool of the machine. When one of the cams in the carriage plate is positioned into alignment with the rotating mechanism and the ram, the rotating mechanism is moved along the one direction so that it applies a biasing force against the cam.

Abstract: A press die includes a lower die, a slide cam movable along the lower die, and an energizing body disposed between the slide cam and the lower die to abut against both surfaces thereof for biasing the slide cam for movement in one direction along the lower die. The slide cam is provided with a plug having an outer diameter that is larger than an outer diameter of the energizing body and abutting against an end surface of the energizing body. This arrangement enables easy attachment and detachment of the energizing body to and from the press die.

Abstract: The invention relates to process for working a workpiece (1) held between a counterholder (4) and a guide (5, 5.2) by a clamping force (14.1, 14.2) by forming a profile (3, 3.1), e.g. precision toothing, in a surface (2) of the workpiece (1) by means of a forming element (8, 8.2), the forming element (8, 8.2) being guided toward the surface (2) of the workpiece (1) at an acute angle (w) to the clamping force (14.1, 14.2) or with a rotary/thrust movement.

Abstract: A hemming apparatus is disclosed including a hemming die for placing and supporting a work, a hemming punch including previous bending portion and bending portion each placed adjacent to said heming die and carrying out bending of said work, a slide cam for fixing and supporting said hemming punch and including a cam follower, a moving mechanism for applying a resilient force to said slide cam in one direction and moving said slide cam to a prescribed distance, a cushion holder for placing and fixing said slide cam and said moving mechanism, and a movable supporting mechanism for supporting said cushion holder which can vertically move to a prescribed distance. The upper mold includes a presser for pressing and fixing the work on said hemming die, driver cam for pushing said cam follower of said slide cam; and a liner for pushing said hemming punch.

Abstract: A negative angle-forming die includes a lower die for mounting a thin metallic plate workpiece onto a supporting portion thereof, and an upper die descendable in a straight direction towards the lower die for forming the workpieces by abutting against the workpiece. A columnar body is arranged in a freely rotating manner on the lower die by a pair of spaced-apart bearings, and has an intruding forming portion formed at an edge portion thereof. A slide cam is formed with an intruding forming portion, and is arranged to oppose the columnar body in a freely sliding manner with respect to the lower die. An automatic returning tool is arranged at the lower die for retracting the columnar body in a rotating manner to an extent with which the workpiece can be taken out from the lower die upon completion of forming.

Abstract: A press apparatus includes a passive cam to which a processing member such as a punch is mounted. Removal of the passive cam from a lower die for repair is made to be easy, and workability is improved. The press apparatus has an actuation cam in an upper die, a passive cam in a lower die which is contact-pressed and driven by the actuation cam, a guide base in the lower die for sliding and guiding the passive cam, guide posts which are mounted across the guide base and move so as to slide the passive cam, and a force applying device for applying a force to the passive cam towards an opposite-work side. In such a press apparatus, the passive cam is fitted onto the guide base so that when the guide posts which are mounted across the guide base are removed, the passive cam can be lifted up and dismounted.

Abstract: A negative angular forming die having a lower die for supporting a workpiece. An upper die is lowered with respect to the lower die to abut against the workpiece for forming the workpiece. A columnar body is rotatably mounted on the lower die, and a groove is formed in the columnar body in the axial direction of the lower die. A slide cam is supported on the upper die and is opposed to the columnar body. An automatic returning tool is provided on the lower die for rotating and retracting the columnar body to a position at which the workpiece can be taken out from the lower die after the forming process is completed. The workpiece is placed on the supporting portion of the lower die with the columnar body being turned, and the slide cam is slid to form the workpiece by an entering forming portion of the columnar body. The columnar body is turned and retracted by the automatic returning tool after forming so that the formed workpiece can be taken out from the lower die.

Abstract: There provides a tool, which is capable of smoothly executing a cutting and protruding process in all the steps from the starting to ending of cutting and protruding of a small protrusion when the protrusion is cut and protruded on an upper surface of a workpiece.