| Patents for B21D 28 - Shaping by press-cutting; Perforating (12,707) |
|---|
| 01/19/1994 | CN1080884A Method of punching u-shaped parts |
| 01/18/1994 | US5279197 Punching press |
| 01/18/1994 | CA1326204C Quick release rotary punch |
| 01/05/1994 | CN2151823Y Improved punching and cutting device for c-shape steel former |
| 12/29/1993 | EP0575398A1 Method and device for manufacturing a single product from integrated circuits received on a lead frame |
| 12/28/1993 | US5272800 Method and apparatus for forming and positioning a preform on a workpiece |
| 12/22/1993 | EP0575223A1 Sequential pivot pin force multiplier |
| 12/21/1993 | US5271261 Processing machine for processing wire and strip stock or for assembling components |
| 12/14/1993 | US5269739 Tool changing apparatus for a turret punch press |
| 12/14/1993 | US5269213 Punch apparatus |
| 12/14/1993 | CA1325169C Rebar cutting and bending machine |
| 12/07/1993 | US5267384 Method for providing a toolholder body guide for punch presses |
| 11/30/1993 | US5265320 Metal stamping |
| 11/30/1993 | CA1324751C Punch and die system |
| 11/25/1993 | DE4216449A1 Machine tool having frame with stamping and shearing apparatus - has stamping piston/cylinder positioned between pair of U-shaped yokes bolted directly to frame |
| 11/24/1993 | EP0491747B1 Combination punch press and laser cutting machine |
| 11/23/1993 | US5263353 Punch and die apparatus for producing flat stamped contact devices having improved contact edge surfaces |
| 11/23/1993 | US5263237 Method for restoring punch and die alignment of a turret-type punch press machine |
| 11/17/1993 | CN2146317Y Hand-operated perforator |
| 11/17/1993 | CN2146316Y Multi-edge rectangular cutter for hand scissors |
| 11/10/1993 | CN2145660Y Ball rack punching bucket process automatic punch press |
| 11/09/1993 | US5259225 Method and apparatus for producing a stamped product |
| 11/09/1993 | US5259100 Milling tool for turret punch press |
| 11/09/1993 | CA1324073C Notching blade assembly |
| 11/02/1993 | US5257715 Method of making brake bands |
| 10/28/1993 | WO1993020973A1 Rotary forming apparatus and method |
| 10/27/1993 | EP0567398A1 Tube wall with variable curvature and process for manufacturing a headerbox of a heat exchanger |
| 10/27/1993 | CN1077680A Punch buffer for press |
| 10/20/1993 | EP0526449A4 Apparatus for producing a blank from stock material |
| 10/12/1993 | US5251502 Mechanical force enhancer |
| 10/12/1993 | CA1322879C Method for machining sheet parts by using a mecatronic machine tool |
| 10/06/1993 | EP0563444A1 Single punching machine with fitting for mounting and centering tools |
| 10/06/1993 | CN2143150Y Plunger tip for rectangle hole |
| 10/05/1993 | US5249492 Vertical trim press and stacking apparatus and method of trimming and stacking articles |
| 10/05/1993 | CA2032205C Method for stamping stepper motor laminations |
| 09/29/1993 | CN2142762Y Automatic continuous plunger die for profile fin |
| 09/28/1993 | US5247862 Process for producing burr-free workpieces by blanking, in particular in a counterblanking tool |
| 09/22/1993 | EP0561443A1 A device for supporting sheets during punching and in general operations of plastic deformation |
| 09/22/1993 | CN1076390A Method for using die stock layout correcting margin X2 as edge-lapped value |
| 09/21/1993 | US5245904 Non-skid ball bearings with adjustable stroke for punch presses |
| 09/15/1993 | EP0560333A1 A punch press machine |
| 09/15/1993 | EP0560054A1 Automatic workholder collision avoidance system for a press |
| 09/14/1993 | US5243893 Mechanism for positioning a material working machine |
| 09/14/1993 | US5243744 Machine for producing venetian blinds and punching device therefor |
| 09/10/1993 | CA2088533A1 Automatic workholder avoidance system for a press |
| 09/09/1993 | DE4207165A1 Stamping of metallic foil in piezoelectrically operated press - is performed with vertical oscillation of stamping punches held flat against both sides of foil and moved through less than half of its thickness |
| 09/01/1993 | EP0557551A1 Die having triple-structural hanging cams |
| 08/31/1993 | US5239852 Apparatus and method for forming a tubular frame member |
| 08/25/1993 | EP0556877A2 Die retaining means for a punch press |
| 08/25/1993 | EP0556876A2 Retaining means for stripper buttons in a punch press |
| 08/24/1993 | US5237849 Method of manufacturing fins for heat exchangers |
| 08/18/1993 | EP0555604A2 Turret punch press |
| 08/18/1993 | CN2140274Y Level regulator of die cutter |
| 08/17/1993 | US5235884 Punch press slug removal system |
| 08/17/1993 | US5235881 Piercing die whose punch has different amounts of chamfer at different outer peripheral edge portions |
| 08/11/1993 | EP0554507A1 Fluid actuated, double acting machine for punching, cutting, bending or the like |
| 08/11/1993 | EP0554258A1 Electromagnetically driven punch press with magnetically isolated removable electromagnetic thrust motor |
| 08/10/1993 | US5233749 Hydraulic actuator |
| 08/04/1993 | EP0553528A1 Die for driving pierce nut |
| 08/04/1993 | CN1074839A Parallelogram blanking method for dynamo stator |
| 08/03/1993 | US5231907 Noise reducing structure of slide-cam die |
| 07/29/1993 | DE4201713A1 Punch and die for stamping holes in sheet metal - have removable cutting edges which reduce the cost of re-sharpening |
| 07/27/1993 | US5230237 Cutting and flanging tools |
| 07/21/1993 | EP0551578A1 Method and system for controlling punch process noise |
| 07/15/1993 | CA2080870A1 Method and system for controlling punch press noise |
| 07/14/1993 | EP0550920A2 Apparatus for working metal workpieces |
| 07/14/1993 | EP0550705A1 A method and an apparatus for carrying out an operation on a mechanical workpiece. |
| 07/06/1993 | US5224915 Punch press with dual tool changing assemblies and method of punching |
| 07/01/1993 | DE4244544A1 Lead frame blanking appts. for integrated circuit mfr. - has press tool with individual punches set into die block for formation of connection leads for IC elements |
| 06/29/1993 | US5222385 Method and apparatus for reforming can bottom to provide improved strength |
| 06/22/1993 | CA1319353C Explosive cutting means |
| 06/17/1993 | CA2085545A1 Press with vertically movable upper and lower drive means |
| 06/16/1993 | EP0546265A1 Single shaft punch press |
| 06/16/1993 | EP0546249A2 Pressing machine |
| 06/16/1993 | CN2136083Y Rotary wheel gun type perforator |
| 06/15/1993 | US5218749 Punch tool assembly with removable punch segments |
| 06/01/1993 | US5215513 Tool changing apparatus for a turret punch press |
| 06/01/1993 | US5214991 Punching apparatus |
| 05/27/1993 | WO1993009891A1 Apparatus for working metal workpieces |
| 05/27/1993 | WO1993009890A1 Improving fatigue life of holes |
| 05/27/1993 | CA2121120A1 Improving fatigue life of holes |
| 05/26/1993 | CN2134244Y Portable hand-operated perforator |
| 05/19/1993 | EP0541959A2 Punch holder with stripper arrangement |
| 05/19/1993 | DE4137481A1 Improved material use for pressed metal components for vehicle assembly - using minor components stamped inside spaces in main components and linked to same by narrow bridges for processing |
| 05/19/1993 | CN2133747Y Hollow plate material for making hollow aluminium grid |
| 05/19/1993 | CN2133379Y Extruding aluminium mould |
| 05/18/1993 | US5212647 Die stamping press having ccd camera system for automatic 3-axis die registration |
| 05/18/1993 | US5211095 Arrangement enabling variably oriented punching with each tool in a multiple tool holder |
| 05/05/1993 | EP0539669A1 Method for operating a plate feeding system for punching presses. |
| 05/05/1993 | CN2131627Y Press die |
| 05/05/1993 | CN2131626Y Notching combined terrace die |
| 05/04/1993 | CA1317327C Apparatus for correctly feeding continuous strips with a shaped side outline to blanking machines |
| 04/29/1993 | DE4135014A1 Damper for over-run of stamping press - consists of tubular piston in a housing with throttling orifice for outlet of air |
| 04/28/1993 | CN2130617Y Multifunctional general die |
| 04/28/1993 | CN2130616Y Cut-off terrace die |
| 04/27/1993 | US5205149 Press machine having adjustable striker |
| 04/27/1993 | US5205147 Pre-loaded actuator using piezoelectric element |
| 04/21/1993 | EP0245371B2 Support system for blanking press |
| 04/20/1993 | US5203486 Crank drive for a material feeder |
| 04/15/1993 | WO1993007445A1 Apparatus to determine the operational effectiveness of a machine tool and method therefor |