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)
09/2003
09/24/2003EP1347216A2 Shift fork for a gearbox of a motor vehicle and method for manufacturing the shift fork
09/24/2003EP1347211A1 Cam block and method for manufacturing the same
09/24/2003EP1345868A2 Molding tool formed of gradient composite material and method of producing the same
09/24/2003CN1444516A Apparatus for punching steel studs and control circuit
09/24/2003CN1443627A Cam equipment
09/23/2003US6622601 Punch unit for punching a hole in a soft metal sheet
09/18/2003WO2002062501B1 Wedge-lockable removable punch and die bushing in retainer
09/18/2003US20030172519 Method and device for machining stacked core
09/17/2003EP1344586A1 Cam apparatus
09/17/2003CN2573110Y Simple extra short deep-hole punching die
09/11/2003US20030170481 Method for production and/or processing of plug parts in follow-on composite tools
09/11/2003US20030167874 Cam apparatus
09/10/2003CN1440860A Hole opener with guide hole positioner
09/09/2003US6615636 Method and apparatus for improving the fatigue life of components and structures using the stresswave process
09/03/2003EP1340559A2 Knockout punch with pilot hole locator
09/03/2003EP1140385B1 Rotary punching apparatus
09/03/2003CN2569937Y Modified automatic puncher structure of wheel band
09/03/2003CN1440058A Metal board and shaping method thereof
09/03/2003CN1439466A Two stage punching process with stage feed die
09/03/2003CN1120073C Member comprising several layers of flat material and method for making the same
08/2003
08/28/2003US20030162616 Continuously variable transmission belt and method of producing metal element of the belt
08/28/2003US20030159561 Knockout punch with pilot hole locator
08/27/2003EP1338826A2 Continuously variable transmission belt and method of producing metal element of the belt
08/27/2003EP1338354A1 Punch press, method of replacing punch and die for punch press, and punch system
08/27/2003CN1438753A Method and apparatus for making magnetic path for one generator
08/21/2003WO2003068429A1 Press action simulator for aerial cam set up
08/21/2003WO2003029069A3 Truck cab space frame
08/21/2003US20030157359 Metal plate and method of shaping the same
08/21/2003US20030154836 Ball-lock insert assemblies
08/21/2003US20030154759 Plate material processing machine with bending function and tool for the same
08/20/2003CN1436643A Die for punching & laminating simultaneously
08/19/2003US6607171 Shelf supporting bracket
08/14/2003WO2003066251A1 Seat frame structure and method for forming
08/14/2003US20030152318 Method for processing an insert pipe for use in injection molding
08/14/2003US20030150315 Cam gear punch
08/13/2003EP1335480A1 Method and device for producing a magnetic circuit for an electric motor
08/13/2003EP1334783A2 Ball-lock insert assemblies
08/13/2003EP1334782A1 Metal mold device
08/13/2003EP1007241B1 Method for producing exact cut edges
08/06/2003CA2370811A1 Seat frame structure and method for forming
08/05/2003US6601492 Punching press device for punching openings in profiled bars, and method of punching
07/2003
07/31/2003US20030141164 Friction generating device and method of making the same
07/31/2003DE20023264U1 Adapter for polygonal holes has locking device preventing radial punch displacement
07/30/2003CN1116134C Method and device for mfg. ring metal sheet group
07/24/2003WO2003060257A1 Non-slip material
07/23/2003CN1115240C Punch Drive controller
07/15/2003US6591726 Orientation device for turret punching machine
07/15/2003US6591648 Method of stamping and piercing a tube
07/15/2003US6591647 Method for manufacturing a corrugated fin for a plate-type heat exchanger and device for implementing such a method
07/10/2003DE20307384U1 Blade for punching and stenciling tool, comprising rounded cutting edge of specific hardness and softer ridge
07/09/2003EP1091815B1 Device and method for shaping flat articles
07/03/2003WO2003053620A1 Die assembly
07/03/2003US20030121378 Diodometer
07/03/2003CA2469158A1 Die assembly
07/02/2003CN1426861A Punching mould for flexible belt material
07/01/2003US6584672 Method for the manufacture of bundles of metal sheets of annular shape
06/2003
06/25/2003EP1321202A2 Manufacturing method and internal high pression forming tool for carrying out the manufacturing method
06/25/2003EP1187706A4 Self-guiding punch and die set
06/19/2003US20030111783 Workpiece shift apparatus for punch press
06/18/2003CN2555960Y Improved automatic perforating machine for accumulator
06/12/2003WO2003048538A1 Finned multi-aperture sheet metal, method of manufacturing the sheet metal, part for exhaust emission control device using the sheet metal, and method of manufacturing the part for exhaust emission control device
06/12/2003US20030106441 Workpiece shift apparatus for punch press
06/12/2003US20030106404 Method and machine for the continuous multi-stroke slotting of plate-shaped workpieces
06/12/2003US20030106400 Die assembly
06/12/2003US20030106225 Hand-held tool for punching a reverse button lock projection in sheet metal
06/11/2003EP1317974A1 Method and machine for multiple travel slitting of plate-shaped workpieces, in particular of metal sheets
06/11/2003EP1152842A4 Roll forming using turret punch press
06/11/2003EP1123169B1 A sheet fabrication center and methods therefor of optimally fabricating worksheets
06/05/2003US20030102762 Sensorless control induction motor rotor slot shapes and fabrication methods
06/04/2003EP1316410A1 A working machine for conducting machining by pressing of a sheet material
06/04/2003EP1316373A1 Method and apparatus for die-cutting in succession a semi-finished piece or blank from a metal strip
06/04/2003CN1110381C Press equipment
05/2003
05/28/2003EP1210190B1 Thin sheet punching device
05/28/2003CN1419973A Automotive plate mfg. method
05/27/2003US6568306 Aperture punching unit
05/22/2003US20030094242 Punch die for punching and laminating simultaneously
05/20/2003US6565349 Apparatus for producing outsert molded parts in production line
05/20/2003US6564702 System for measuring material in a press
05/15/2003WO2003039781A1 An improved apparatus for forming a baffle
05/14/2003EP1310308A2 Punching machine
05/14/2003EP1200211B1 Method and apparatus for forming opposing holes in a side wall of a tubular workpiece
05/14/2003EP0778092B1 Punch press system and control method therefor
05/14/2003CN1417010A Perforator
05/13/2003US6561065 Hollow body hole punching apparatus, system, and method
05/07/2003EP1135224A4 A punching apparatus
05/06/2003US6557254 Metallic wall framing, method and apparatus for producing same
05/02/2003EP0880416B1 Hydraulic manual device
05/01/2003WO2003035300A1 Method and tool for providing convexities
05/01/2003US20030080460 Manufacturing method for double tube having a hole formed therein, and mold for implementation thereof
04/2003
04/29/2003US6553805 Double-lanced suspension
04/24/2003WO2003033835A1 Non-slip structure
04/24/2003US20030075034 Two-piece metal punch construction and method for making
04/23/2003EP1304179A1 Metal mold for press working
04/23/2003EP1303207A1 Bracket system for shelving
04/23/2003CN1411927A Float scraps detector and detecting method
04/22/2003US6550241 Fluid-operated circuit for setting the top and bottom dead center location of the punch actuation cylinder in punching machines
04/17/2003US20030070518 Method and apparatus for manufacturing a press-formed object
04/17/2003US20030070516 Slug float detecting device and detection method thereof
04/17/2003US20030070296 Method for manufacturing spool valve
04/16/2003EP1301317A1 Apparatus for punching steel studs and control circuit
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