Patents
Patents for B21J 5 - Methods for forging, hammering, or pressing; Special equipment or accessories therefor (5,577)
03/1994
03/30/1994EP0589598A1 Method of making a tubular body having a deformable internal skirt
03/30/1994EP0589514A1 Method of manufacturing a dynamic groove bearing, die suitable for use in such a method, and housing and bearing part manufactured by such a method; data storage unit provided with such a groove bearing; method of manufacturing a rotatable scanning unit, and magnetic tape device provided with such a scanning unit
03/23/1994CA2105706A1 Method of making a tubular body having a deformable internal skirt
03/22/1994US5295382 Cold extrusion of externally toothed helical members
03/16/1994CN1083751A Method and apparatus for precision mold forging
03/15/1994US5293766 Method for making slender seamless steel mold
02/1994
02/23/1994EP0583381A1 Precision forming apparatus, method and article
02/22/1994CA1327133C Tool bits and method of shaping
02/03/1994DE4225368A1 Method for forming external toothing on hollow shafts - axial pressure forces are applied to material under section to be formed and produce multi-axial stress condition in workpiece
02/03/1994DE4225366A1 Method of manufacturing externally toothed hollow bodies - uses forming die and rollers to reduce original blank diameter to preliminary working diameter for tooth cutting
02/03/1994DE4225365A1 Percusion drum with body forming cylinder - has several bristle-shaped spring or damping members in drum skin edge region.
02/02/1994EP0581483A1 Device for and method of forging a helical gear
01/1994
01/26/1994CN2154139Y Multi-combination cold-heading mould for bearing roller
01/19/1994EP0579005A1 Method for manufacturing a workpiece having a pressed section and device for carrying out the method
01/04/1994US5275046 Entrance contour design to streamline metal flow in a forging die
12/1993
12/28/1993US5272896 Forging method and system
12/09/1993WO1993024257A1 Method of making a threaded connection for reinforcing bars
12/09/1993WO1993024256A1 Method for obtaining hollow forgings by radial forging of continuous blanks
12/09/1993WO1993024255A1 Method of radial forging of blank
12/01/1993EP0572105A1 Method for forming tube-shaped rack bar and device therefor
11/1993
11/30/1993US5265457 Method of forming an oil groove on the end surface of a rotor of an aluminum alloy
11/11/1993DE4214444A1 Mfg. spherical shells for homo-kinetic joints - by deforming sequentially and radially tubular or cup-shaped blank with shaping cross-sectional reduction
11/03/1993EP0568411A1 Press working apparatus
11/02/1993US5257717 Method of manufacturing a cooking utensil
11/02/1993US5257522 Process of hot forging at ultrahigh temperature
11/02/1993US5257453 Process for making exhaust valves
10/1993
10/27/1993CN1022547C Production process of crowbar and its die
10/23/1993CA2094682A1 Method and bending machine for making a piece of bent wire or tube including an upset part
10/12/1993US5251585 Rocker arm
10/12/1993CA2065435C Billet pre-piercer apparatus and method
10/05/1993US5249451 Method and arrangement for die forging elongated workpieces by multistation press tool
10/05/1993US5249450 Probehead for ultrasonic forging
09/1993
09/29/1993CN1022222C Machining method and apparatus of dies for precise fooge of bevel gears
09/16/1993WO1993017814A1 Process and device for producing cross-head screwing tools or the like, especially in the form of bits
09/16/1993WO1993017812A1 A method and an apparatus for ejecting an elongate blank from a die
09/16/1993WO1993017811A1 A machine for forming objects
09/16/1993WO1993017810A1 A method and an apparatus for making screws, rivets or similar objects
09/16/1993WO1993017808A1 A method and an apparatus for making a head on an elongate blank
09/16/1993DE4207964A1 Cold forming process and equipment esp. for screw driver bits of cross slot form - with hexagonal head formed at one end of round bar blank and cross-slot profile formed at other end with concentric closing pile
09/16/1993DE4207963A1 Screwing tool bits mfr. - in which workpiece is subjected to axial spring forces during the forming operation
09/13/1993CA2088019A1 Plastic working method for a holed member
09/08/1993EP0558815A1 Device for producing a hollow workpiece, profiled, at least internally, in a straight or oblique direction with respect to the workpiece-axis, and its use
08/1993
08/31/1993US5240137 Method of manufacturing a cooking utensil
08/24/1993US5237745 Method of and apparatus for manufacturing drive plate
08/19/1993WO1993015928A1 Gearshift lever and a method of forming a gearshift lever
08/19/1993DE4302781A1 Lever to actuate valves in IC engines - has central round passage in pivot direction, and H- shaped sections on either side
08/19/1993DE4204213A1 Production of balls by upsetting lengths of wire - involves tools which use compressed air to withdraw tool at end of working stroke
07/1993
07/27/1993US5230134 Method of making a petal rod
06/1993
06/30/1993EP0353231B1 Process and apparatus for forging one piece track roller rim
06/22/1993CA1319309C Die-upset manufacture to produce high volume fractions of re-fe-b type magnetically aligned material
06/16/1993EP0546609A1 Integrated ball joint
06/15/1993US5218853 Single-cycle closed die metal forging method
06/11/1993CA2077200A1 Integrated ball joint
06/10/1993WO1993010924A1 Method of internally and externally upsetting the end of a metal tube
06/04/1993CA2079639A1 Method of internally and externally upsetting the end of a metal tube
06/02/1993CN2134900Y Straight-line swinging roller
05/1993
05/12/1993CN1020553C Method and apparatus for upsetting forged bars
04/1993
04/28/1993CN1071356A Malleable forging method for alloy steel ingot
04/20/1993CA1316501C Magnetic stem and vertically fixed pocket device for a stationary riveting machine
04/07/1993CN1070597A Sub-thermal forging technology for steel forge piece
03/1993
03/23/1993US5195349 Forming machine and process for forming material therewith
03/17/1993CN1069916A Die-forming process for ic engine cylinder water jacket and its mould
02/1993
02/16/1993US5186082 Ironing punch for making socket of ball-and-socket joint and method of manufacturing such ironing punch
02/10/1993CN1068762A Technology for upsetting and shaping of coupler of hollow pumping rod
02/09/1993US5184495 Method of internally and externally upsetting the end of a metal tube
02/03/1993EP0526174A1 Process for making exhaust valves
02/03/1993EP0525454A1 Method of manufacturing a cooking vessel
02/03/1993EP0525453A1 Method of manufacturing a cooking vessel
01/1993
01/31/1993CA2074915A1 Method of manufacturing a cooking utensil
01/31/1993CA2074897A1 Method of manufacturing a cooking utensil
01/19/1993CA2091898A1 Method of plastic forming
01/13/1993EP0522501A1 Process of hot forging at ultrahigh temperature
12/1992
12/15/1992US5170556 Production method for forged component made of composite material
12/09/1992EP0516750A1 Method for superplastic forming of rapidly solidified magnesium base metal alloys
12/01/1992US5167734 Process for identification evaluation and removal of microshrinkage
11/1992
11/26/1992WO1992020475A1 Precision forming apparatus, method and article
11/03/1992US5160108 Process and tool for producing a barrel for a telescopic universal transmission joint
10/1992
10/27/1992CA1309280C Method and apparatus for continuous compression forging of continuously cast steel
10/20/1992US5156689 Shrinking the molded shape while maintaining the temperature below the alpha-beta transition temperature
10/14/1992EP0508096A1 Method of making an expanding dowel of metal
10/14/1992CN1065224A Punch pressing mechanism of forging machinery
10/13/1992CA1308580C Method of reducing slab in widthwise direction
09/1992
09/24/1992DE4109407A1 Precision forging press with hydraulically actuated tool - forges workpiece in single stroke of press
09/15/1992CA1307389C Method and apparatus for manufacturing a constant velocity joint and the like
08/1992
08/19/1992CN1017878B Hand straight shank link lever punching device
08/05/1992CN1063246A Production process of crowbar and its die
07/1992
07/08/1992EP0493792A1 Method of manufacturing drive plate
06/1992
06/10/1992CN1016944B Automobile transmission shaft universal-joint fork squeezing die forming technology and die set
05/1992
05/20/1992CN1061173A Process of hydraulic press upset widen and its installation
05/12/1992US5111575 Swaging tool for bearing installation
05/05/1992US5109888 High-pressure metallic pipe provided with connecting head part and method for formation thereof
04/1992
04/22/1992CN1016326B Closed forge moulding technology and die for lamination
04/22/1992CN1016325B Method of reducing slab in width direction
04/21/1992US5106012 Dual-alloy disk system
04/14/1992CA1298723C Fully enclosed die forging apparatus
04/08/1992CN1060047A Four link roll forging method and its roll forging machine
03/1992
03/31/1992US5100050 Method of manufacturing dual alloy turbine disks
03/18/1992EP0233938B1 Rivet installation method and construction
03/17/1992CA1297321C Fully enclosed die forming apparatus
03/11/1992EP0473797A1 Device for hydro-mechanical forming of articles
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