| Patents for B21D 28 - Shaping by press-cutting; Perforating (12,707) |
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| 02/07/1989 | US4802603 For carbonated beverages |
| 02/07/1989 | US4802393 Piercing die |
| 01/26/1989 | WO1989000465A1 Tooling for forming machines having improved guidance, tool mounting, and pilot pin systems |
| 01/25/1989 | EP0300000A1 Press drive. |
| 01/24/1989 | US4799612 Foot-operated press |
| 01/10/1989 | US4797531 Cutting press |
| 12/27/1988 | US4793063 Punch gun |
| 12/21/1988 | CN88201337U Adjustable assembling die used for back-flap |
| 12/20/1988 | US4791844 Knockout device for punching a work plate in a press-machine |
| 12/15/1988 | WO1988010017A1 Electro-discharge machining electrode and method of forming |
| 12/14/1988 | EP0294765A1 Precision punching machine and associated tool change method |
| 12/01/1988 | WO1988009232A1 Rotatable multi-tool holder and a machine tool provided with such a holder |
| 11/29/1988 | US4787283 Metal stud and channel cornering die |
| 11/29/1988 | US4787282 Method and apparatus for forming by punching |
| 11/23/1988 | EP0292357A1 Method for cutting thin sheets, in particular metal plates, and elastomeric material used in this method |
| 11/22/1988 | US4785655 Method and arrangement for producing knockouts for electrical equipment cabinets |
| 11/16/1988 | CN87204982U Dies of punching rectangular small hole for modified phenolic cotton paper board |
| 11/15/1988 | US4783982 Apparatus and method for trimming a can body |
| 11/08/1988 | US4782998 Method and apparatus for press-cutting various patterns |
| 11/08/1988 | US4782678 Method for minimizing scrap loss in making a drawn container |
| 11/01/1988 | CA1243826A1 Method and apparatus for making tubes formed with holes in their peripheral walls |
| 10/25/1988 | US4779443 Complex pressing die apparatus |
| 10/05/1988 | EP0284682A2 Punch gun |
| 10/04/1988 | US4775135 Apparatus and method for clamping and positioning workpiece in machine tools |
| 10/04/1988 | US4774865 Die stamping system |
| 09/29/1988 | DE3709052A1 Piercing device for correcting the fastening holes on mudguards for motor vehicles |
| 09/28/1988 | EP0284217A1 Malfunction detector |
| 09/27/1988 | US4773250 Module-type forming machine |
| 09/20/1988 | US4771663 Multistroke punching method and apparatus therefor |
| 09/14/1988 | EP0281777A1 Cutting press |
| 09/13/1988 | US4770572 Press for manufacturing helical gears |
| 08/30/1988 | US4766707 Strip of loosely connected hold down clips |
| 08/17/1988 | EP0278046A1 Device for stamping complex matrix figures out of a metallic strip |
| 08/16/1988 | US4763551 Punching devices |
| 08/16/1988 | US4763550 Self equalizing piercing machine |
| 08/16/1988 | US4763501 Punch-probing device on a cross transfer press |
| 08/11/1988 | WO1988005724A1 Press drive |
| 08/11/1988 | WO1988005699A1 Method for sequentially continuous machining of sheet pieces from sheet material |
| 08/09/1988 | US4762043 For punching holes in workpieces |
| 08/03/1988 | EP0276634A1 Method and installation for manufacturing work pieces |
| 07/27/1988 | EP0176510B1 Apparatus for briefly storing and impulsively releasing mechanical energy |
| 07/19/1988 | US4757734 Balancing means in a punching machine |
| 07/14/1988 | DE3743041C1 Method for producing a frame element consisting of interconnected hollow-profile beams and punching device for carrying out the method |
| 07/14/1988 | DE3640447C1 Method and apparatus for punching and stacking |
| 07/12/1988 | US4756630 For punch presses |
| 07/06/1988 | EP0273690A2 Knockout device for punching a work plate in a press-machine |
| 07/06/1988 | EP0273431A2 Turret punch press machine |
| 07/05/1988 | CA1238775A1 Multiple processing machine |
| 06/23/1988 | DE3734701C1 Method for the stop-limited cutting of workpieces |
| 06/22/1988 | EP0272175A1 Press tool for displacing the punches in a direction which differs from the working direction of the press |
| 06/14/1988 | US4750393 Method for punching a cylindrical tube |
| 06/07/1988 | US4748883 Apparatus for setting the working stroke of a punching machine |
| 06/01/1988 | EP0269050A2 Fastening assembly for piercing pins in a paper blanks perforating unit |
| 05/25/1988 | EP0268534A1 Die for a press tool for guiding and positioning a profile in order to punch it |
| 05/18/1988 | EP0267287A1 Numerically controlled punch press |
| 05/17/1988 | US4744276 Method and apparatus for producing punched tube |
| 05/11/1988 | EP0267115A2 Piercing die |
| 05/11/1988 | EP0266626A2 Lower tool holder for a die or the like |
| 05/11/1988 | EP0266625A2 Upper tool holder for a punch or the like |
| 05/11/1988 | EP0266624A2 Upper tool holder for a punch or the like |
| 05/11/1988 | EP0266623A2 Upper tool holder for a punch or the like |
| 05/10/1988 | US4743900 Device for releasing control signals for a machine tool |
| 05/05/1988 | WO1988003081A1 Cylinder assembly, especially for punching or nibbling machines |
| 05/04/1988 | EP0265589A2 Stamping press |
| 05/03/1988 | US4741084 Conversion of mechanical punch presses to hydraulic punch presses |
| 04/26/1988 | US4739687 Punch |
| 04/19/1988 | US4738173 Shearing in punch press and die therefor |
| 04/19/1988 | US4738020 Method for manufacture of laminated parts |
| 04/19/1988 | CA1235370A1 Process and device for laterally perforating metallic pieces, particularly pressed pieces |
| 04/07/1988 | WO1988002286A1 Method and device for moving a tool to exact shaping or working engagement with a strip of material having a repeated basic shape |
| 03/30/1988 | EP0262106A2 Method and device for moving a tool to exact shaping and working engagement with a strip of material having a repeated basic shape |
| 03/30/1988 | EP0261805A2 Foot-operated press |
| 03/30/1988 | CN86107871A Scrapless shaping die for making multipiece circlips used in holes |
| 03/22/1988 | US4732220 Apparatus for briefly and impulsively releasing mechanical energy |
| 03/22/1988 | US4732028 For forming strip material |
| 03/17/1988 | DE3631457A1 Punching machine |
| 03/16/1988 | CN87202617U New type hingeed slice leapfrog former |
| 03/15/1988 | US4730392 Hydraulic punch tool for heat exchangers |
| 03/09/1988 | EP0258329A1 Punching and bending machine for wires and strips. |
| 03/02/1988 | EP0258209A2 Device for punching sheet metal |
| 03/02/1988 | EP0257674A2 Punching or stamping machine |
| 02/23/1988 | US4726270 Removing a punch from a retainer block |
| 02/16/1988 | US4724616 Panel punch |
| 02/09/1988 | US4723360 Rotary apparatus of die unit for manufacturing core lamination assembly |
| 02/04/1988 | DE3625895A1 Counter-holder for the slide of a hydraulic press |
| 02/03/1988 | CN87202532U Disk blank cutting device |
| 02/02/1988 | US4722125 Method for producing a tungsten carbide tip punch |
| 01/19/1988 | US4719830 Apparatus for controlling heat deformation of a turret punch |
| 01/19/1988 | US4719691 Tool change mechanism for punch presses and the like |
| 01/13/1988 | EP0252635A2 Complex pressing die apparatus |
| 01/12/1988 | US4718161 Press tool comprising interchangeable working parts |
| 01/07/1988 | EP0251796A2 Improvements in or relating to punches and presses |
| 01/07/1988 | EP0251628A1 Improvements relating to metal slitting and stamping |
| 01/05/1988 | US4716803 Self-equalizing piercing machine |
| 12/29/1987 | US4715203 For thrusting an attached mandrel through a hole in a metal workpiece |
| 12/23/1987 | EP0249862A2 Method of and apparatus for producing punched tube |
| 12/22/1987 | US4714849 Linear stepping motor |
| 12/22/1987 | US4714814 Welding machine for welding tongues onto sheet-metal members |
| 12/16/1987 | CN87103917A 辊轧成型机 Roll forming machine |
| 12/08/1987 | US4711115 Method for forming memory discs by forging |