Patents
Sitemap › B21 - Mechanical metal-working without essentially removing material; Punching metal › B21D - Working or processing of sheet metal or metal tubes, rods or profiles without essentially removing material; Punching › B21D 28 - Shaping by press-cutting; Perforating
Patents for B21D 28 - Shaping by press-cutting; Perforating (12,707)
10/1999
10/27/1999CN2345301Y Hand perforating press
10/26/1999US5970838 Machine for punching sheet metal with a counterpunch extracting means
10/26/1999US5970832 Turrent-type press machine using repositioning system to reduce offset
10/26/1999US5970770 Modular multipurpose bending machine and its linear positioning system
10/21/1999WO1999052666A1 Process for manufacturing a captive screw
10/21/1999CA2328161A1 Process for manufacturing a captive screw
10/20/1999EP0950444A1 Corner joining machine
10/20/1999CN2344110Y Inner cover bulkhead renovation die
10/14/1999DE19914462A1 Punch with punching head to cut hole in work pieces
10/13/1999EP0949020A2 Piercing apparatus
10/05/1999US5960664 Channel forming and punching machine
10/05/1999US5960533 Apparatus for manufacture of laminated parts
09/1999
09/29/1999EP0945194A2 Machine for working plat-like members, in particular metal sheets
09/29/1999EP0944446A2 Method of forming and piercing a tube
09/29/1999CN2340605Y High speed mono-slot punch
09/29/1999CN2340532Y Electric controller of high speed slot punching apparatus
09/23/1999WO1999047303A1 Method and apparatus for producing beneficial stresses around apertures by the use of focused stress waves
09/23/1999DE19912445A1 Hydraulic-molded transverse control arm for vehicle
09/23/1999DE19808399C1 Mehrfachwerkzeug The multi-tool
09/23/1999CA2323779A1 Method and apparatus for producing beneficial stresses around apertures by the use of focused stress waves
09/22/1999EP0944235A2 Imaging system with integral punch assembly
09/22/1999CN1045175C Rotary forming apparatus and method
09/21/1999US5953972 Punch press drive device
09/20/1999CA2265357A1 Hydroformed control arm
09/16/1999WO1999046068A1 Methods of manufacturing metal part and sheet retaining foil and printer
09/14/1999CA2168061C Burring processing method, jig for burring processing and burring processing apparatus
09/08/1999EP0940200A2 Method and device for removing a slug from an internal high-pressure forming tool
09/08/1999EP0927630B1 Press, in particular punch press
09/07/1999US5946961 Web bowing apparatus
09/05/1999CA2264491A1 Method and device for removing a slug from a hydroforming tool
09/02/1999WO1999043474A1 Quick change adjustable punch tool assembly and method of adjustment
09/01/1999EP0938938A2 Multiple tool
09/01/1999CN2335721Y Perforating die for perforated steel strap
08/1999
08/31/1999US5943934 Cutting device with movable punch
08/26/1999DE19807845A1 Process for pressing metal parts
08/24/1999US5943240 Machine tool control system and method utilizing metal mold arrangement information
08/24/1999US5941673 Loading and unloading apparatus for sheet material and method thereof and pallet used for the apparatus
08/24/1999CA2073204C Noise reducing structure of slide-cam die
08/19/1999WO1999041046A1 Apparatus for punching steel studs
08/19/1999DE19805275A1 Wall breakthrough production
08/19/1999CA2321078A1 Apparatus for punching steel studs
08/18/1999CN2333459Y Rim punching machine
08/17/1999US5938127 Outlet for connecting spray nozzles, drop tubes or the like to an irrigation pipe
08/12/1999WO1999026740A3 Method for producing work pieces
08/10/1999US5934165 Adjustable punch assembly
08/10/1999US5934110 Laundry drum for a washing machine and tool for producing the same
08/10/1999CA2114887C Punching die
08/05/1999DE19803814A1 Perforating stamp cutting even softest plastics, metals and composites much more cleanly, without jamming stamping in matrix bore
08/04/1999CN2331452Y Cutting processing device for pipe body
08/03/1999US5931074 Press device
08/03/1999US5931070 Punch press system and its control method
07/1999
07/27/1999US5927140 Tool accelerator
07/22/1999DE19801203A1 Hole-making device for flowing drawn components, particularly sheets
07/21/1999EP0929369A1 Connector plate and punch for forming
07/20/1999CA2066803C Rotary forming apparatus and method
07/14/1999EP0739254B1 Workpiece-deforming tool and die for use in a punch press
07/13/1999CA2041552C A turret punch press with a die exchanging device
07/08/1999DE19756232C1 Verstellbares Werkzeug Adjustable tool
07/07/1999EP0927630A1 Press, in particular punch press
07/07/1999EP0927600A1 Press machine
07/07/1999EP0927584A1 Punch assembly
07/06/1999US5918359 For manufacturing electric motor parts from a sheet of stock material
07/01/1999DE19809519C1 Method of removal of core from pressure molded hollow workpiece
06/1999
06/30/1999CN1220921A Press device
06/29/1999CA2137302C Apparatus for making self-piercing nuts
06/24/1999WO1999030896A1 Adjustable tool
06/22/1999US5913939 Face gear having a notched positioning groove on the circumference
06/22/1999US5913761 Punch press
06/22/1999US5913760 Tool set mounting method
06/17/1999DE19753549A1 Keiltrieb Wedge drive
06/16/1999EP0922509A1 Press device
06/16/1999EP0921876A1 Method of producing and stacking components
06/16/1999EP0731739B1 Locking ring stripper plate assembly
06/16/1999CN1219895A Precision blanking press with knife-edged ring and counter cylinders
06/15/1999US5911806 For stamping items
06/10/1999WO1999028117A1 V-belt drive
06/09/1999EP0920933A2 Improved punching machine for metal sheet panels
06/09/1999EP0920932A1 Method and apparatus for punching a workpiece
06/08/1999US5910052 Process for manufacturing a captive screw
06/08/1999US5909908 Combined processing apparatus
06/05/1999CA2250781A1 Improved punching machine for metal sheet panels
06/03/1999WO1999026740A2 Method for producing work pieces
06/02/1999EP0919306A1 Member having different shapes, and layer-built body manufacturing method and apparatus
06/01/1999US5908797 High strength, hardness
05/1999
05/27/1999WO1999025507A2 Device for producing a workpiece by stamping
05/27/1999DE19752156A1 Method for producing workpieces
05/27/1999DE19751238A1 Press tool for making precision components from strip material, and method for servicing tool
05/26/1999EP0917918A2 Loading and unloading device for sheet metals
05/19/1999CN2319151Y Rim punching machine
05/18/1999US5904064 Cam assembly for use in a pressing machine
05/12/1999EP0784520B1 Method and apparatus for making nipple holes in a double-walled hollow rim of a spoke wheel
05/12/1999CN1216486A Rotary forming apparatus and method of rotary forming
05/11/1999US5901628 Die lifting system for a turret punch press
05/06/1999EP0912326A1 Punching tool, in particular for punching sheet metal
05/06/1999DE19747607A1 Punching method for hollow workpieces
05/05/1999CN2317024Y Ratary disc of rim perforating press
05/05/1999CN2317023Y Hand operating perforating press
05/04/1999US5899131 Apparatus and method for providing pockets in a roller cage of a bearing assembly and a roller cage produced by such an apparatus and method
05/04/1999US5899110 Pivoting fabricating apparatus with a linear action
05/04/1999US5898996 Method of forming a cylindrical heat exchanger header tank
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