Patents for B21D 24 - Special deep-drawing arrangements in, or in connection with, presses (1,969) |
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08/24/1999 | CA2143695C Press having gas cylinders or plastically deformable members for even distribution of blank-holding force on pressure member through cushion pins |
08/19/1999 | DE19806079A1 Extrusion press with variable direction of extrusion for deforming flat sheets into workpieces |
08/19/1999 | DE19805706A1 Tool for deep drawing of sheet components |
08/12/1999 | WO1999040359A1 Self-lubricating fluid cylinder |
07/27/1999 | CA2109137C Spring device |
07/22/1999 | DE19801203A1 Hole-making device for flowing drawn components, particularly sheets |
07/14/1999 | CN2328450Y 空气油压缓冲器 Air hydraulic buffer |
07/13/1999 | CA2038958C Blank forming method and apparatus and product obtained thereby |
07/01/1999 | DE19757376A1 Sheet holding system for a deep-drawing moulding press |
06/24/1999 | DE19756911A1 Sheet plate drawing assembly |
06/10/1999 | DE19855322A1 Apparatus for assisting in the stripping of can bodies from the punch of a can body maker |
06/09/1999 | EP0920359A1 Valve and method for producing a valve seat for a valve |
06/08/1999 | CA2181931C Drawing method and apparatus |
06/01/1999 | US5908797 High strength, hardness |
06/01/1999 | CA2044251C Can body making apparatus |
05/19/1999 | EP0916427A1 Progressive deep-drawing machine |
05/11/1999 | US5901599 Method and apparatus for sheet forming a blank using a variable bead |
04/08/1999 | DE19743921A1 Drawing appliance for sinks, barrels, etc |
02/18/1999 | DE19734277A1 Device for deep-drawing metal plate |
01/27/1999 | EP0893171A1 Methods for constructing a die for press bending machine and determining cushion forces therefore |
01/07/1999 | WO1999000201A1 Valve and method for producing a valve seat for a valve |
01/07/1999 | DE19726991A1 Ventil und Verfahren zur Herstellung eines Ventilsitzes für ein Ventil Valve and method of producing a valve seat for a valve |
12/30/1998 | EP0887127A1 Drawing device in a press |
12/17/1998 | DE19724766A1 Method and apparatus for hydromechanical deep drawing |
11/05/1998 | DE19718212A1 Tool for drawing sheet metal blanks |
11/03/1998 | US5829137 Method for manufacturing wheels |
09/29/1998 | US5813275 Safety circuit for press die cushion |
09/23/1998 | EP0865844A2 Drawing apparatus for a press |
09/23/1998 | EP0865843A1 Drawing device for a drawing press |
09/22/1998 | CA2077595C Hydraulic cushioning system for press, having hydraulic power supply including means for adjusting initial pressure to be applied to pressure-pin cylinders |
09/11/1998 | WO1998039116A1 Progressive deep-drawing machine |
09/08/1998 | US5802907 Tooling apparatus and method for high speed production of drawn metal cup-like articles |
08/25/1998 | US5797291 Die set for manufacturing heat exchanging fin of heat exchanger |
08/18/1998 | US5794482 Apparatus in a hydraulic press |
08/05/1998 | EP0821625A4 Improved rotary cup infeed |
07/30/1998 | DE19702636A1 Tool for deep drawing sheet metal parts |
07/22/1998 | EP0737278B1 Liquid spring for punch press |
07/15/1998 | EP0852523A1 Improvement to the blank holder force regulating system in a press |
07/08/1998 | CN1187153A Improved rotary cup infeed |
07/02/1998 | DE4345340C2 Hydraulic press with shortened work time |
06/30/1998 | CA2164999C Stretch controlled forming mechanism and method for forming metal blanks |
06/09/1998 | US5761949 Deep-drawn stamping process including side piercing |
05/28/1998 | DE19645627A1 Hydraulic press with reduced ram return times |
05/20/1998 | DE19646122A1 Hold-down for segmental control of material flow in deep drawing, and method of controlling hold-down force |
05/05/1998 | US5746084 Drawing mechanism for a press |
04/30/1998 | DE19712664A1 Deep drawing press |
04/23/1998 | DE19643483A1 Hydraulic system for tools or presses for sheet-metal work |
04/15/1998 | EP0835701A2 Die for clinch joints |
04/15/1998 | EP0835699A2 Hydraulic deep drawing apparatus |
04/15/1998 | CN1178729A Hydraulic deep-drawing device |
04/14/1998 | CA2094827C Die-cushion apparatus of press machine |
04/07/1998 | US5735201 Apparatus including mutually communicating hydraulic cylinders for even distribution of blank-holding force on pressing machine |
04/02/1998 | DE19639222A1 Cushion pre-acceleration device for sheet metal working in press |
03/26/1998 | DE19639220A1 Sheet metal holder pre-accelerator for single action press |
03/12/1998 | WO1998009749A1 Method of fabricating shaft from metal plate |
03/10/1998 | US5724843 Method of diagnosing pressing machine based on detected physical value as compared with reference |
02/25/1998 | EP0804302A4 Improved lightweight ram for bodymaker |
02/18/1998 | EP0586669B1 Press with a hydraulic drive, in particular a sheet-shaping press |
02/04/1998 | EP0821625A1 Improved rotary cup infeed |
12/30/1997 | US5701778 Press having gas cylinders of plastically deformable members for even distribution of blank-holding force on pressure member through cushion pins |
12/30/1997 | US5701777 Drawing method and apparatus |
12/11/1997 | WO1997046337A1 Improvement to the blank holder force regulating system in a press |
12/09/1997 | CA2093382C Apparatus for measuring blank holding force acting on pressure ring of apress |
12/03/1997 | CN2269250Y Top impact rotary composite multistation punch head |
12/02/1997 | US5692404 Method of diagnosing pressing machine based on detected physical value as compared with reference |
11/26/1997 | EP0808224A1 Deep-drawing tool with integral holding-down device |
11/26/1997 | EP0777540A4 Wiping unit for ram of bodymaker |
11/18/1997 | US5687605 Wiping unit for ram of bodymaker |
11/18/1997 | US5687598 Press having cushioning cylinders each having two chambers whose pressure difference is adjustable to control blank-holding force |
11/13/1997 | DE19718841A1 Material flow control for bending sheet metal workpiece |
11/12/1997 | EP0806256A2 Method for controlling the material flow during the drawing of sheet metal parts and device for carrying out the method |
11/12/1997 | CN1164447A Die set for manufacturing heat exchanging fin of heat exchanger |
11/05/1997 | EP0804302A1 Improved lightweight ram for bodymaker |
11/04/1997 | CA2070100C Apparatus and method for hydroforming sheet metal |
10/30/1997 | DE4345341C2 Hydraulic press with shortened work time |
10/30/1997 | DE4345339C2 Hydraulic press with shortened work time |
10/21/1997 | US5678439 Spacer |
09/24/1997 | CN1160367A Wiping unit for ram of bodymaker |
08/26/1997 | US5660074 Method of selecting a preload oil pressure valve for a die cushion pin pressure equalizing system of a press machine |
06/17/1997 | US5639147 Variable off-set full face wheel and method and apparatus for making the same |
06/17/1997 | US5638717 For use on a high speed mechanical press |
06/11/1997 | EP0777540A1 Wiping unit for ram of bodymaker |
05/15/1997 | DE19541721A1 Hydraulic drawing unit in press |
05/14/1997 | EP0773076A1 Apparatus for controlling the pressure in hydraulic cushion devices of presses |
05/14/1997 | EP0773075A2 Method and device for controlling, checking or optimizing pressure of cushion pin cylinders of press by discharging fluid or initial pressure |
05/06/1997 | US5626046 Lightweight ram for bodymaker |
04/29/1997 | US5623848 Pressing method and system wherein cushion platen is lowered by cooperation of shock absorbers and cylinders before holding of blank between die and pressure ring |
04/29/1997 | US5623847 Method of and apparatus for deep drawing |
04/16/1997 | EP0768127A2 Drawing apparatus for a press |
03/19/1997 | CN1145285A Drawing method and apparatus |
03/13/1997 | DE19532963A1 Control of holding-down pressure and for lubricating when deep drawing |
03/04/1997 | CA2006774C Device for pressing sheet material |
02/26/1997 | CN1143921A Improved lightweight ram for bodymaker |
02/04/1997 | US5599565 Device for press forming a sheet blank |
01/29/1997 | EP0755733A1 Drawing method and apparatus |
01/29/1997 | CN1141219A Method and apparatus for sheet forming blank using variable bead |
01/28/1997 | CA2077510C Hydraulic cushioning system for press, having shut-off valve for disconnection of pressure-pin cylinders from power supply upon contact of movable die with workpiece |
01/23/1997 | DE19629074A1 High strength and hardness sintered silicon nitride-based material |
01/22/1997 | EP0754508A1 Method and apparatus for forming a blank using a variable bead |
12/19/1996 | DE19521525A1 Clamp arrangement for sheet metal workpieces |