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)
09/1998
09/29/1998US5813301 For a press
09/29/1998US5813266 Method of forming and piercing a tube
09/23/1998EP0865846A1 Punching machine and punching method
09/23/1998CN2291981Y Iron sheet wheel type cutting machine
09/22/1998US5810704 Method of mounting die
09/22/1998US5809638 From a sheet of stock material
09/19/1998CA2226893A1 Adjustable punch assembly
09/16/1998EP0864384A2 Process for cutting metallic pieces with a high degree of finishing
09/15/1998US5808355 Lead frame of a semiconductor device and a method for designing it
09/10/1998DE19738251A1 Punch with C=shaped tool for manufacturing two opposite cuts with additional hole or stamping
09/09/1998EP0862957A1 Loading and unloading apparatus for sheet material and method thereof and pallet used for the apparatus
09/09/1998EP0676279B1 Press forwardly feed die of metallic gasket
09/08/1998US5802966 Dual mount control system
09/08/1998US5802944 Gas cylinder with internal time delay
09/08/1998US5802907 Tooling apparatus and method for high speed production of drawn metal cup-like articles
09/08/1998US5802850 Hydraulic machine having an improved air bag
09/03/1998WO1998037993A1 Member having different shapes, and layer-built body manufacturing method and apparatus
09/01/1998US5799524 Pressure forming and piercing a hollow body
09/01/1998US5799387 Lamina stack having a plurality of outer perimeter configurations and an apparatus and method for manufacturing said stack
08/1998
08/27/1998WO1998037740A1 A method of selectively metallizing a substrate using a hot foil embossing technique
08/27/1998DE19707354A1 Punch and die for producing dimpled holes in sheet metal
08/25/1998US5797306 Lamination notching apparatus
08/18/1998US5794501 Method of punching template for forming a base plate of a tape cassette
08/18/1998CA2045637C Control apparatus and method for progressive fracture of workpieces
08/13/1998DE19805093A1 Fork for Cardan joint
08/11/1998US5791240 Slide device in mechanical press
08/11/1998US5791186 Press working method for plate material and press working apparatus using the same
08/11/1998US5791185 Rotary apparatus with moveable die
08/04/1998US5787775 Multidirectional cutting tool in a punch press environment
08/04/1998CA2118341C Method of manufacturing an iron core of a multi-phase linear motor
07/1998
07/30/1998DE19702882A1 Stamp with cutter die especially for blanking press
07/28/1998US5784920 Actuator-punch assembly with forming die installation
07/23/1998WO1998025713A3 Method of forming and piercing a tube
07/23/1998DE19701423A1 Perforating sheet metal component esp. hollow body or shell in cutting tool
07/22/1998EP0726824B1 Forming openings in pipes
07/16/1998WO1998030344A1 Punching-bending machine
07/16/1998DE19700604A1 Corner connector machine with at least one stamp embossment device
07/14/1998US5778749 Flexible manufacturing press assembly
07/14/1998US5778721 Tooling machine for reshaping workpieces
07/07/1998US5775215 Machine tool equipped with marking apparatus
07/01/1998EP0850708A1 Sheet metal punching machine
06/1998
06/30/1998US5771725 Method of producing a band blade, a method of bending a strip material, and an apparatus for bending a stip material
06/25/1998DE19652995A1 Apparatus for production of apertures
06/24/1998EP0849070A1 Control device for hydraulically driven tool
06/24/1998EP0849012A1 Method of and device for manufacturing holes on the periphery of hollow profiles
06/23/1998US5768932 Double action hydraulic container domer
06/18/1998WO1998025713A2 Method of forming and piercing a tube
06/17/1998EP0848099A1 Drum for a laundry treatment machine and tool for its manufacturing
06/17/1998CN1184868A Washing drum and the prodn. tool therefor used in washing treatment machinery
06/16/1998US5765458 Die follow confirming method
06/16/1998US5765420 Process and apparatus for producing hollow bodies having at least one branch
06/11/1998WO1998024570A1 Hydraulic manual device
06/10/1998CN2283528Y Eccentric rolling cone flaring die
06/10/1998CN2283527Y Double-head blanking processing machine for tubing
06/09/1998US5761951 Mechanical hand for moving plates, in particular sheet metal panels, with respect to a machine tool such as a bending press
06/09/1998US5761949 Deep-drawn stamping process including side piercing
06/09/1998US5761944 Punching processing method and roll forming die used in this processing method
06/04/1998DE19649932A1 Hydraulisches Handgerät Hydraulic hand tool
06/03/1998EP0845314A1 Punch press machine and method of repositioning the workpiece on the table of such machine
05/1998
05/27/1998EP0844035A1 Method for producing elongated apertures in hollow profiles and device therefor
05/27/1998EP0844034A2 Method of and device for manufacturing holes on the periphery of a hollow profile
05/26/1998US5755023 Lamina stack with at least one lamina layer having a plurality of discrete segments and an apparatus and method for manufacturing said stack
05/19/1998US5752424 Releasable tool piece punch assembly
05/14/1998DE19646159A1 Device for stamping of holes in e.g. sheet metal
05/13/1998CN2281229Y Improved mould for hole punching and polishing
05/13/1998CN1181290A Process for manufacturing contacts for electronics devices, manufacturing apparatus for carrying out same process and continuous strip material for stamping used for the same process
05/12/1998US5751011 System for punching holes in a spinnerette
05/12/1998US5749279 Hydraulic punch actuator with centering apparatus
05/12/1998US5749256 Method and apparatus for manufacturing a hot rolled beam
05/06/1998EP0839594A1 A machine for punching sheet metal
05/06/1998EP0839076A1 Method of forming relatively hard materials
05/06/1998CN1180603A Punching machine
04/1998
04/30/1998DE19715217A1 Punching machine
04/30/1998DE19643232A1 Punching unit with feed mechanism for sheet-metal plate
04/29/1998EP0838545A2 Knitting tool for textile machines and method for its manufacturing
04/23/1998DE19643194A1 Stamping punch with a relatively hard cutting plate
04/16/1998WO1998015371A1 Machine tool control system
04/15/1998EP0835701A2 Die for clinch joints
04/14/1998US5737952 Method and apparatus for producing a header with openings
04/09/1998DE19637811A1 Producing sheet-metal components
04/08/1998EP0834394A1 Servo-motor driven press device
04/08/1998EP0834377A1 Composite processing device
04/08/1998EP0834357A1 Forming and stamping machine with an additional forming device
04/08/1998CN2277836Y Portable hydraulic punching machine
04/07/1998US5735186 Punching-nibbling press
04/07/1998US5735155 Method for manufacturing patterned tread plates
04/01/1998CN1177539A Punch driving device
03/1998
03/31/1998US5732587 Metallic workpiece having to-be-ironed section and method for forming the same
03/25/1998CN1176855A Method for punching cutting guiding hole on punch-head assembly's platen, and punch-head assembly as well as platen thereof
03/19/1998WO1998010880A1 Connector plate and punch for forming
03/19/1998DE19637807A1 Progressive tool for punching and cutting out flange adaptors having stepped diameters lying within one another
03/17/1998US5727436 Draw punch having relieved helical working faces
03/11/1998EP0827790A2 Punch press drive device
03/05/1998WO1998008634A1 Method of producing and stacking components
03/05/1998DE19634723A1 Verfahren zum Herstellen und Schichten von Bauteilen A method for producing layers of components and
03/05/1998CA2263900A1 Method of producing and stacking components
03/04/1998CN1175097A Perforated substrate and method of manufacture
03/03/1998US5722280 Two stage die set
02/1998
02/24/1998US5720138 Metallic wall framing, method and apparatus for producing same
02/05/1998DE19724657A1 Compression forming process for rotary-symmetrical part
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