Patents for B21D 28 - Shaping by press-cutting; Perforating (12,707)
02/1985
02/05/1985US4497196 Apparatus for performing operations on strip material
01/1985
01/29/1985US4495699 Hole punch apparatus
01/23/1985EP0131770A1 Method of fine-cutting work pieces, and fine-cutting tool for carrying out the method
01/22/1985CA1181442A1 Clamping apparatus
01/02/1985EP0129866A1 Stamping press including device for storing and changing tools
01/02/1985EP0129859A1 Machine tool, in particular a turret cutting press
12/1984
12/19/1984EP0128870A1 Device for the fine-cutting of openings in a ball-bearing cage
12/19/1984EP0128486A1 Lower tool-input of a stamping machine, especially for inserting a die
12/11/1984US4487566 Punching tool having interchangeable punches
12/11/1984US4486941 Punch press with automatic tool changer
12/04/1984US4485709 Apparatus for punching holes in a moving strip
12/04/1984US4485708 Punching devices
12/04/1984US4485707 Method of conveying sheets, and blanking die assembly in a pinch press
12/04/1984US4485661 Deep-drawing end edge-trimming die
12/04/1984US4485549 Apparatus for changing the tools of a punch press
11/1984
11/22/1984WO1984004571A1 A method and apparatus for briefly storing and impulsively releasing mechanical energy
11/21/1984EP0125540A2 Apparatus for making tubes with holes in the walls
11/20/1984US4483173 Device for the automatic regulation of the push rods of a stamping press
11/20/1984US4483170 Press machine structure
11/20/1984CA1178193A1 Mechanical punch driver
11/20/1984CA1178130A2 Double action press having floating punch
11/14/1984EP0124746A1 Punching machine
11/13/1984US4481700 Panel punch
10/1984
10/23/1984US4478122 Punch head for a punch press
10/16/1984US4477537 Method for producing burr-free blanks and the blanks produced thereby
10/09/1984US4475424 Blanking apparatus
10/03/1984EP0120747A1 Tubular framework for vehicle seats
10/02/1984CA1175341A1 Tool and process for precision cutting
09/1984
09/27/1984WO1984003647A1 Method for fabricating punched pieces with material saving
09/18/1984US4471680 Cam slide unit
09/18/1984US4471676 Machine tool including workpiece clamp sensor
09/04/1984US4469572 Method of continuously processing a band-shape material
09/04/1984US4468995 Apparatus for manufacturing frames from aluminum profile rails
09/04/1984CA1173739A1 Method and apparatus for perforating metal strip
08/1984
08/22/1984EP0116447A1 Apparatus for performing operations on strip material
08/21/1984US4466320 Rotary die cutter
08/21/1984US4466317 Method and apparatus for safety for presses
08/14/1984US4464920 Machine for roller forming metal louvers
08/08/1984EP0115340A2 Sectional steel machining installation
07/1984
07/31/1984US4462291 Punching or pressing machine
07/25/1984EP0114112A2 Method of mounting an eccentric tool retainer to a die shoe
07/24/1984US4461068 Automatic slotting apparatus with tool changing device
07/03/1984US4457196 Punch press assembly including a preloaded encapsulted spring
07/03/1984CA1170106A1 Method for pressing of articles and device for its realization
06/1984
06/19/1984CA1169352A1 Heat exchanger ribbon slitting device and method
06/13/1984EP0110566A2 Reduction of rupture strength of electrolytic capacitor cans
05/1984
05/29/1984CA1168148A1 Press apparatus having resilient stop blocks
05/23/1984EP0108935A2 Stamping machine having a multiple punch
05/08/1984US4446623 Notching tool
05/01/1984US4445272 Method and apparatus for stacking rotor blanks on a shaft
04/1984
04/25/1984EP0106774A2 Arrangement of turrets for punching machines
04/24/1984US4444380 Centering and grasping device
04/18/1984EP0105841A1 Strip used for manufacturing supports of components for watches
04/10/1984US4441391 Apparatus for severing an article from a carrier and for positioning the severed article
04/04/1984EP0104509A2 A machine tool for working sheet metal
03/1984
03/28/1984EP0103885A2 Punching and bending machine
03/20/1984US4437214 Non-machining method of manufacturing a solid-bottomed or internally flanged bearing race
03/14/1984EP0102646A1 Combined shear and punch press
03/14/1984EP0102620A2 Punch and ram assembly for punch press
03/14/1984EP0102429A1 Compound die assembly
03/06/1984US4435143 Small blank feeder and tray former
03/06/1984US4434693 Plate positioning apparatus
02/1984
02/28/1984US4433465 Process for manufacturing universal joint
02/22/1984EP0101252A2 A punch and winding machine
02/14/1984US4431172 Device for absorbing punching shock in a press
02/14/1984CA1162142A1 Shock dampening system for presses
02/08/1984EP0100283A2 Universal sheet metal holder
02/08/1984EP0100282A1 A bridge type punch press
02/07/1984US4429560 Apparatus for making a transition plate for a mine roof truss
01/1984
01/24/1984US4426899 Apparatus for punching holes in tubing
01/17/1984US4425829 Punch apparatus
01/03/1984US4423859 Impact damper
01/03/1984US4423546 Punch press with automatic tool changer
01/03/1984CA1159763A1 Notching tool
01/03/1984CA1159719A1 Method for producing lids from sheet-metal, more particularly from iron or steel sheet, for containers, especially cans
12/1983
12/27/1983US4422628 Clamping apparatus
12/27/1983CA1159359A1 Punch retainer
12/20/1983US4420964 Method of and apparatus for the pressworking of articles
12/06/1983US4418595 Automatic hollow punch search method for die-cutting machines, particularly for footwear production
11/1983
11/29/1983CA1157820A1 Mandrel jaw and method of manufacture
11/23/1983EP0094927A1 Device for supplying plate-shaped workpieces to a machine tool
11/08/1983CA1156548A1 Adjustable power press
11/01/1983US4412469 Turret punch presses having tool holders rotatably mounted in the turrets
10/1983
10/25/1983CA1155758A1 Adjustable punch head
10/18/1983CA1155464A1 Clamping apparatus for machine tools
10/18/1983CA1155321A1 Puncher-riveter
10/12/1983EP0091350A1 Remotely manipulable device for cutting plates and tubes in dangerous surroundings
10/04/1983US4407614 Apparatus for perforating a workpiece
10/04/1983CA1154667A1 Actuator mount for power shear or punch
09/1983
09/20/1983US4404835 Tool
09/14/1983EP0088152A1 A tube punching and/or bending assembly, particularly for punching holes having axes transversely to one another and/or for bending a tube with curves not coplanar to one another
09/13/1983US4403489 Strip winding machine and method
09/13/1983US4403417 Draw punch
09/06/1983US4402240 Heat exchanger ribbon slitting device and method
08/1983
08/30/1983US4400966 Tool for forming a lateral opening in a tube
08/30/1983US4400964 Method and device for continuous production of flanged hollow article
08/30/1983US4400861 Fabrication of seismic springs from sheets
08/03/1983EP0084568A1 Iron core laminate manufacturing apparatus
08/02/1983US4396185 Clamping apparatus for machine tools
08/02/1983US4395929 Method and stamping tool for waste-free stamping of packaging strips and packaging strips so fabricated