Patents for B21D 24 - Special deep-drawing arrangements in, or in connection with, presses (1,969) |
---|
07/25/2001 | EP1117496A1 Fluid form |
06/21/2001 | US20010004003 Die surface of the press forming die is shaped by press forming, simplification; die, punch and assembly are suitable for press forming a blank material into a product panel |
06/12/2001 | US6244091 Apparatus and method for forming cup-shaped members |
05/31/2001 | WO2001038019A1 Control for a hydromechanical deep-drawing installation |
05/31/2001 | DE19954310A1 Method for quick-action regulation of drawing process in presses has piezo-electric actuator for precision regulation, between pressure bolt and pressure piston for rough regulation |
05/29/2001 | US6237381 Power press ram force modulation and apparatus for use therewith |
05/23/2001 | DE19955748A1 Control system for hydro-mechanical deep drawing machine has pressure intensifier with regulator valve to regulate pressure in water tank dependent upon drawing die position |
05/17/2001 | WO2001034319A1 Deep drawing press and method for deep-drawing sheet-metal workpieces |
05/17/2001 | DE19953860A1 Tiefziehpresse und Verfahren zum Tiefziehen von Blechwerkstücken Deep drawing press and method for deep drawing of sheet metal workpieces |
05/17/2001 | DE10055761A1 Hydraulic pressure equalization procedure for pressure equalization apparatus has connection of pressure equalization circuit and oil supply device according to hydraulic pressure of circuit and predetermined pre-charge pressure |
05/16/2001 | CN1065786C Drawing method and apparatus |
05/10/2001 | DE19953751A1 Deepdraw press tooling for metal sheet uses mechanical hydraulic or pneumatic mechanism to control spindle force dictating draw bar movement. |
05/09/2001 | EP1097314A1 Low contact force spring |
04/25/2001 | CN1064867C Pressing method and pressing system |
04/19/2001 | DE19949946A1 Hydraulic press has displacement cylinders each with associated compensation cylinder to load press ram. |
04/19/2001 | DE19945545A1 Apparatus for selectively deep drawing or die casting has a vertically moving upper plunger for receiving an upper deep drawing tool and a lower press table for receiving the lower deep drawing tool |
04/11/2001 | CN1064281C Method and apparatus for deep stamping |
03/28/2001 | CN1289274A Application of dry lubricant to forming dies and forging dies |
03/15/2001 | WO2000005517A9 Low contact force spring |
03/14/2001 | EP1082185A1 A deep drawing press with a ram hammer and drawing cushion driven by threaded spindles and spindle nuts |
03/07/2001 | CN2422076Y Blanking deep-drawing triple action presses |
03/07/2001 | CN1062790C Apparatus for deep drawing sheet metal |
02/14/2001 | CN1061909C Die set for mfg. heat exchanging fin of heat exchanger |
01/24/2001 | EP0852523B1 Improvement to the blank holder force regulating system in a press |
01/17/2001 | CN1060693C Device for working cup shape circular edge piece |
01/17/2001 | CN1060692C Stretch controlled forming mechanism and method for forming metal blanks |
01/16/2001 | US6173914 Valve and method for producing a valve seat for a valve |
01/04/2001 | DE19926917A1 Deforming tool for sheet cutout, with edge resting element movable toward one edge of cutout and able to rest against this edge |
01/03/2001 | EP0804302B1 Improved lightweight ram for bodymaker |
01/02/2001 | US6167741 Noise-reducing structure of a processing machine |
12/28/2000 | DE19928422A1 Presse zum Außenhochdruckformen Press for external compression molding |
12/27/2000 | EP1063028A1 Press for external hydroforming |
12/14/2000 | DE19926906A1 Control of the sheet clamping force during mechanical or hydraulic sheet forming processes by spreading of the clamping and drawing forces over the surface of the sheet being worked |
12/07/2000 | DE19923540A1 Verfahren und Vorrichtung zum Tiefziehen von Blechformteilen Method and apparatus for deep drawing of sheet metal parts |
11/30/2000 | DE19923217A1 Verfahren zum Verhindern der Durchbiegung bei Elementen, die unter Belastung stehen A method for preventing deflection for elements that are under stress |
11/29/2000 | EP1055510A2 Apparatus for the compensation of deformation of a plate assembly and process therefor |
11/29/2000 | EP1055465A2 Method and apparatus for deep drawing sheet metal plates |
11/29/2000 | CN2407855Y Rolling type composite extending mould of vortex spring and spring plate |
11/15/2000 | EP1052036A2 Improved seal bead for superplastic forming of aluminium sheet |
11/08/2000 | EP0821625B1 Improved rotary cup infeed |
11/02/2000 | WO2000064607A1 Die-stamping method and tools, use thereof for stamping benches and stamped articles such as benches thus obtained |
11/02/2000 | EP0808224B1 Deep-drawing tool with integral holding-down device |
10/17/2000 | US6131497 Gas cylinder with time delay |
10/11/2000 | CN2400199Y Roller spinning turning-up machine for cap |
10/10/2000 | US6128936 Bulging device and bulging method |
09/27/2000 | EP1038141A1 Self-lubricating fluid cylinder |
09/20/2000 | EP1036607A2 Method and apparatus for forming a bottom-profiled cup |
09/13/2000 | EP1034858A2 Silent structure of processing machine, silent structure of pressing machine, silent structure of drawing die, and silent run-up unit thereof |
08/01/2000 | US6094809 Apparatus for securing a wheel rim to a spider |
07/20/2000 | DE19901019A1 Sheet holding force application device for deep drawing tool, with pressure cylinder able to be displaced on baseplate |
07/18/2000 | US6089073 Drawing apparatus with blocking devices, detents and the like |
07/18/2000 | US6089071 Method for controlling press working by means of working wheels |
06/15/2000 | WO2000033989A1 Application of dry lubricant to forming dies and forming dies that operate with high force |
05/30/2000 | US6068245 Apparatus and method for cushioning the action of draw dies operating in a stamping press and the like |
05/25/2000 | DE19853366A1 Vorrichtung und Verfahren zum Umformen Apparatus and method for transforming |
05/24/2000 | EP1002595A2 Method and device for forming a workpiece |
05/02/2000 | CA2027101C A drawing apparatus in drawing stages of presses |
04/20/2000 | DE19857480A1 Drawing tool for drawing sheet components, comprises membrane plates movable perpendicular to their surface stretching direction |
04/13/2000 | WO2000020143A1 Fluid form |
04/13/2000 | DE19845186A1 Fluidform Fluid form |
04/12/2000 | EP0992300A2 Process for stretch forming age-hardened aluminium alloy sheets |
04/11/2000 | US6047583 Seal bead for superplastic forming of aluminum sheet |
03/30/2000 | WO2000016927A1 Apparatus and method for manufacturing wheels by electromagnetic high energy capacity forming |
03/28/2000 | CA2163313C Apparatus including mutually communicating hydraulic cylinders for even distribution of blank-holding force on pressing machine |
03/28/2000 | CA2116407C Method of diagnosing pressing machine based on detected physical value as compared with reference |
03/23/2000 | WO2000015366A1 Draw die cushioning means |
03/15/2000 | EP0985465A2 Bulging device and bulging method |
03/07/2000 | US6033499 Process for stretch forming age-hardened aluminum alloy sheets |
03/07/2000 | US6032506 Improvment to the blank holder force regulating system in a press |
03/07/2000 | US6032505 Tooling apparatus and method for high speed production of drawn metal cup-like articles |
02/22/2000 | US6026670 Apparatus for use in forming can bodies |
02/08/2000 | US6022004 Self-lubricating fluid cylinder |
02/08/2000 | CA2102360C Method and device for controlling, checking or optimizing pressure of cushion pin cylinders of press by discharging fluid or initial pressure |
02/03/2000 | WO2000005517A1 Low contact force spring |
02/01/2000 | CA2176980C 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 |
01/26/2000 | EP0974410A2 Machine with hydraulically controlled counterpressure holding element |
01/25/2000 | US6016680 Silent structure for a drawing die and a silent run-up unit therefor |
01/11/2000 | CA2122205C Method and apparatus for diagnosing press cushioning device, on optimum range of blank-holding force |
12/28/1999 | US6006578 Die for drawing molded sheet metal parts |
12/28/1999 | US6006564 Application of dry lubricant to forming dies and forging dies that operate with high force |
12/21/1999 | US6003359 Progressive deep-drawing machine |
12/21/1999 | CA2151114C Press having cushioning cylinders each having two chambers whose pressure difference is adjustable to control blank-holding force |
11/30/1999 | US5992206 Clinching die having metallic restoring member |
11/25/1999 | DE19821159A1 Deep draw press |
11/23/1999 | CA2124173C Method and apparatus for adjusting pressure of cushioning pneumatic cylinder pressure on press, when cushion platen is at its setup position |
11/23/1999 | CA2091570C Electromagnetic re-draw sleeve actuator |
11/18/1999 | WO1999058265A1 A deep drawing press with a ram hammer and drawing cushion driven by threaded spindles and spindle nuts |
11/17/1999 | EP0956913A1 Noise reducing device for a drawing die and run-up unit for the blank holder |
11/09/1999 | US5979211 Hydraulic deep drawing apparatus |
11/09/1999 | US5979210 Drawing device for a press with control device for maintaining pressure during press stoppage |
10/19/1999 | US5966981 Press assembly |
10/05/1999 | US5960665 Drawing device for drawing presses |
10/05/1999 | CA2093383C Method and apparatus for adjusting press operating conditions depending upon dies used |
10/05/1999 | CA2060952C Die tooling for metal working |
09/30/1999 | WO1999048631A1 Drawing die, drawing method using drawing die, and drawn container formed using drawing die |
09/15/1999 | EP0695225B1 An apparatus in a hydraulic press |
09/14/1999 | CA2006773C Method and device for pressing sheet material with a deformable punch under a ram |
09/09/1999 | DE19808586A1 Drawing tool for drawing cylindrical cups from sheet |
09/07/1999 | CA2080998C Method and apparatus for the local forming of brittle material |
08/25/1999 | EP0592670B1 Method of preventing plungers from bottoming in die cushion pin pressure equalizing system |