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 37 - Tools as parts of machines covered by this subclass
Patents for B21D 37 - Tools as parts of machines covered by this subclass (19,804)
07/1990
07/03/1990US4938105 Method of manufacturing a one-sided or two-sided punching knife for non-metallic materials
06/1990
06/30/1990CA2006772A1 Method and device for pressing sheet material on an elastic forming die
06/05/1990US4930332 Apparatus for exchanging tool for bending machine
05/1990
05/31/1990DE3938854A1 Monitoring punching tools during punching process - by detecting parameters, e.g. body signal noise and punching force, in time correlation with punching process
05/29/1990US4928377 Machine tool
05/22/1990CA1269218A1 Cast-to-size epoxy tools for stamping sheet metal panels
05/16/1990EP0367920A2 Machine tool
05/09/1990CN2056874U Forming device for flatting pipe
05/08/1990CA2001662A1 Machine tool
05/02/1990CN2056616U Impact mould for chain sheet
04/1990
04/26/1990DE3836288A1 Tool-holding and -changing device
04/25/1990CN2056366U Combined hole punching device
04/18/1990CN1007592B Process for preparing sculpture of cold-forging metal
04/17/1990US4916951 A press, having a substructure with vertical spring supports
04/11/1990EP0363251A1 Quick tool-mounting system for presses of 20 to 200 tons
04/03/1990US4912961 Structure for securing a die to a bolster plate
04/03/1990US4912960 Automatic precision stamping press and method for changing tools
03/1990
03/27/1990US4910993 Progressive former and method of producing same
03/21/1990EP0359601A1 Process for the manufacture of moulding tools, especially for deep-drawing parts out of sheet metal
03/20/1990US4909493 Cylinder type hydraulic clamp
03/13/1990CA1266718A1 Recovery of stored data from mutilated tape data blocks
03/08/1990DE3833765A1 Die try-out press
03/06/1990US4905556 Blanking press
02/1990
02/28/1990EP0183648B1 Press for processing work pieces made from metal
02/20/1990US4901427 Punch press
02/08/1990WO1990000943A1 Press for manufacturing sheet metal preforms in several stages
02/06/1990US4898225 Mold lubricant exhausting apparatus for knocking-out mechanism
01/1990
01/24/1990EP0351741A1 Press for making sheet metal parts in several steps
01/23/1990US4895014 Failsafe tool clamping system for press brake
01/17/1990EP0350671A2 Apparatus for bending or straightening work pieces by plastic deformation
01/16/1990CA1264420A1 Press tool with removable working parts under the press
01/09/1990US4891965 System for connecting a bending blade to its corresponding support in a sheet metal panel bending machine
12/1989
12/27/1989CN1038228A Spiral bevel-gear cold-straightening technological equipment and straightening method thereof
12/20/1989EP0346481A1 Method of defining hole positions of punch-fitting component
12/13/1989CN1006052B Assembling die
12/06/1989EP0344386A1 Press tool for plates with high deformability grade
11/1989
11/30/1989DE3816739A1 Punching tool for insertion between the ram and the bolster of a press
11/29/1989EP0343552A2 Stamping machine with an exchangeable punching tool and work piece advance
11/15/1989EP0342103A1 Strip tool module, adapted to work alone or in combination with other modules
11/08/1989EP0340543A2 Progressive former and method of producing same
11/08/1989EP0340311A1 Dies changing method for presses
11/07/1989US4878288 Press
11/07/1989EP0272305A4 Apparatus and method for forming an integral object from laminations.
10/1989
10/18/1989EP0337156A2 Die spring construction
10/17/1989US4874234 Toric contact lens with displaced center of gravity
10/11/1989CN1005393B Press with chucking plates for sets of tools
10/04/1989EP0335602A1 Whisker reinforced ceramic material working tools
10/04/1989CN1035966A Making technique of cold forged metal sculpture works
10/03/1989CA1262034A1 Cable and cable pulling eye assemblies
09/1989
09/28/1989DE3907687A1 Punching (stamping) machine
09/19/1989US4866974 Method of changing die assemblies for press machine
09/12/1989CA1259305A1 Sulfur-containing compositions, and additive concentrates, lubricating oils, and metal working lubricants containing same
09/06/1989CN1005093B Punching die with guiding and relieving apparatus of metal strip
08/1989
08/30/1989EP0329724A1 Tooling for forming machines having improved guidance, tool mounting, and pilot pin systems
08/29/1989US4860428 Lifting hand for a punch press tool changer
08/15/1989US4856399 Apparatus for blanking thin sheets using a punch having localized regions of hand and soft elastic material
08/02/1989EP0325947A2 Progressive method and die for punched parts
08/01/1989US4852377 Tool pack
07/1989
07/05/1989EP0322617A2 Cylinder type hydraulic clamp
07/04/1989US4844429 Die spring construction
07/04/1989US4843931 Punch and die system
07/04/1989US4843704 Tool exchange apparatus
06/1989
06/27/1989US4842506 Clamping device for removably securing shaping moulds on the plates of moulding presses
06/21/1989EP0321437A2 Method for the manufacture of a single- or double-edged press knife for nonmetallic materials
06/20/1989US4840052 Mobile nozzle device for die lubricating
06/14/1989EP0320128A2 Floating mold changer carriage
06/06/1989US4836071 Modular punch apparatus for punching complex shapes from a metal ribbon or tape
06/06/1989US4836009 Upper tool support for a stamping machine or the like
06/01/1989WO1989004732A1 Method of defining hole positions of punch-fitting component
05/1989
05/24/1989EP0317412A1 Composed die set for drawing press
05/23/1989US4831865 Lower tool support for a stamping machine or the like
05/17/1989EP0316131A2 Metal mold for molding or coining or sizing a sintered part
05/17/1989EP0316116A1 Die sets
05/16/1989US4830337 Device for pushing and pulling an accessory instrument of manufacturing plant
05/09/1989US4827758 Upper tool support for a stamping machine or the like
05/05/1989WO1989003898A1 Use of a tool steel for tools for pressing motor car sheet steel
05/05/1989WO1989003747A1 Drive module for tool aggregates
05/05/1989WO1989003731A1 Sheet metal pressing resin mold and method of manufacturing same
05/03/1989DE3735493A1 Werkzeugaggregat Tool unit
04/1989
04/27/1989DE3734636A1 Quick-change device for tools in deep-drawing presses
04/20/1989WO1989003262A1 Dies changing method for presses
04/11/1989US4819554 For maximizing machine utilization
04/11/1989US4819476 Tooling for forming machines having improved guidance, tool mounting, and pilot pin systems
04/05/1989EP0310479A1 Method for making an apparatus for flanging edges on pressed articles and apparatus for carrying out
04/04/1989CA1251993A1 Press with chucking plates for sets of tools
04/04/1989CA1251915A1 Die clamp
03/1989
03/22/1989EP0308363A1 Circulating shelf
03/01/1989EP0305239A1 Press tool, in particular for trimming metal plate blanks, and method of making it
03/01/1989EP0304928A1 Tool-setting system, particularly for a machine tool
03/01/1989CN1031338A Material and manufacture method of die
02/1989
02/28/1989US4807456 Workpiece transfer device for press machine
02/21/1989US4805440 Punching or stamping machine
02/02/1989DE3724479A1 Bending device for the individual pre-bending of osteosynthesis plates during surgery
01/1989
01/26/1989WO1989000465A1 Tooling for forming machines having improved guidance, tool mounting, and pilot pin systems
01/25/1989EP0300019A1 Propoxylated guerbet alcohols and esters thereof
01/04/1989CN2030115U Cold-drawn rolling die for making screwed steel
12/1988
12/28/1988EP0296650A2 System for connecting a bending blade to its corresponding support in a sheet metal panel bending machine
12/28/1988CA1247461A Press roller transfer system
12/27/1988US4793231 Composite tool and method of making
12/21/1988CN88101709A Mold lubricant exhausting apparatus for knocking-out mechanism
1 ... 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199