Patents for B21D 24 - Special deep-drawing arrangements in, or in connection with, presses (1,969)
07/2001
07/25/2001EP1117496A1 Fluid form
06/2001
06/21/2001US20010004003 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
06/12/2001US6244091 Apparatus and method for forming cup-shaped members
05/2001
05/31/2001WO2001038019A1 Control for a hydromechanical deep-drawing installation
05/31/2001DE19954310A1 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
05/29/2001US6237381 Power press ram force modulation and apparatus for use therewith
05/23/2001DE19955748A1 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
05/17/2001WO2001034319A1 Deep drawing press and method for deep-drawing sheet-metal workpieces
05/17/2001DE19953860A1 Tiefziehpresse und Verfahren zum Tiefziehen von Blechwerkstücken Deep drawing press and method for deep drawing of sheet metal workpieces
05/17/2001DE10055761A1 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
05/16/2001CN1065786C Drawing method and apparatus
05/10/2001DE19953751A1 Deepdraw press tooling for metal sheet uses mechanical hydraulic or pneumatic mechanism to control spindle force dictating draw bar movement.
05/09/2001EP1097314A1 Low contact force spring
04/2001
04/25/2001CN1064867C Pressing method and pressing system
04/19/2001DE19949946A1 Hydraulic press has displacement cylinders each with associated compensation cylinder to load press ram.
04/19/2001DE19945545A1 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
04/11/2001CN1064281C Method and apparatus for deep stamping
03/2001
03/28/2001CN1289274A Application of dry lubricant to forming dies and forging dies
03/15/2001WO2000005517A9 Low contact force spring
03/14/2001EP1082185A1 A deep drawing press with a ram hammer and drawing cushion driven by threaded spindles and spindle nuts
03/07/2001CN2422076Y Blanking deep-drawing triple action presses
03/07/2001CN1062790C Apparatus for deep drawing sheet metal
02/2001
02/14/2001CN1061909C Die set for mfg. heat exchanging fin of heat exchanger
01/2001
01/24/2001EP0852523B1 Improvement to the blank holder force regulating system in a press
01/17/2001CN1060693C Device for working cup shape circular edge piece
01/17/2001CN1060692C Stretch controlled forming mechanism and method for forming metal blanks
01/16/2001US6173914 Valve and method for producing a valve seat for a valve
01/04/2001DE19926917A1 Deforming tool for sheet cutout, with edge resting element movable toward one edge of cutout and able to rest against this edge
01/03/2001EP0804302B1 Improved lightweight ram for bodymaker
01/02/2001US6167741 Noise-reducing structure of a processing machine
12/2000
12/28/2000DE19928422A1 Presse zum Außenhochdruckformen Press for external compression molding
12/27/2000EP1063028A1 Press for external hydroforming
12/14/2000DE19926906A1 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
12/07/2000DE19923540A1 Verfahren und Vorrichtung zum Tiefziehen von Blechformteilen Method and apparatus for deep drawing of sheet metal parts
11/2000
11/30/2000DE19923217A1 Verfahren zum Verhindern der Durchbiegung bei Elementen, die unter Belastung stehen A method for preventing deflection for elements that are under stress
11/29/2000EP1055510A2 Apparatus for the compensation of deformation of a plate assembly and process therefor
11/29/2000EP1055465A2 Method and apparatus for deep drawing sheet metal plates
11/29/2000CN2407855Y Rolling type composite extending mould of vortex spring and spring plate
11/15/2000EP1052036A2 Improved seal bead for superplastic forming of aluminium sheet
11/08/2000EP0821625B1 Improved rotary cup infeed
11/02/2000WO2000064607A1 Die-stamping method and tools, use thereof for stamping benches and stamped articles such as benches thus obtained
11/02/2000EP0808224B1 Deep-drawing tool with integral holding-down device
10/2000
10/17/2000US6131497 Gas cylinder with time delay
10/11/2000CN2400199Y Roller spinning turning-up machine for cap
10/10/2000US6128936 Bulging device and bulging method
09/2000
09/27/2000EP1038141A1 Self-lubricating fluid cylinder
09/20/2000EP1036607A2 Method and apparatus for forming a bottom-profiled cup
09/13/2000EP1034858A2 Silent structure of processing machine, silent structure of pressing machine, silent structure of drawing die, and silent run-up unit thereof
08/2000
08/01/2000US6094809 Apparatus for securing a wheel rim to a spider
07/2000
07/20/2000DE19901019A1 Sheet holding force application device for deep drawing tool, with pressure cylinder able to be displaced on baseplate
07/18/2000US6089073 Drawing apparatus with blocking devices, detents and the like
07/18/2000US6089071 Method for controlling press working by means of working wheels
06/2000
06/15/2000WO2000033989A1 Application of dry lubricant to forming dies and forming dies that operate with high force
05/2000
05/30/2000US6068245 Apparatus and method for cushioning the action of draw dies operating in a stamping press and the like
05/25/2000DE19853366A1 Vorrichtung und Verfahren zum Umformen Apparatus and method for transforming
05/24/2000EP1002595A2 Method and device for forming a workpiece
05/02/2000CA2027101C A drawing apparatus in drawing stages of presses
04/2000
04/20/2000DE19857480A1 Drawing tool for drawing sheet components, comprises membrane plates movable perpendicular to their surface stretching direction
04/13/2000WO2000020143A1 Fluid form
04/13/2000DE19845186A1 Fluidform Fluid form
04/12/2000EP0992300A2 Process for stretch forming age-hardened aluminium alloy sheets
04/11/2000US6047583 Seal bead for superplastic forming of aluminum sheet
03/2000
03/30/2000WO2000016927A1 Apparatus and method for manufacturing wheels by electromagnetic high energy capacity forming
03/28/2000CA2163313C Apparatus including mutually communicating hydraulic cylinders for even distribution of blank-holding force on pressing machine
03/28/2000CA2116407C Method of diagnosing pressing machine based on detected physical value as compared with reference
03/23/2000WO2000015366A1 Draw die cushioning means
03/15/2000EP0985465A2 Bulging device and bulging method
03/07/2000US6033499 Process for stretch forming age-hardened aluminum alloy sheets
03/07/2000US6032506 Improvment to the blank holder force regulating system in a press
03/07/2000US6032505 Tooling apparatus and method for high speed production of drawn metal cup-like articles
02/2000
02/22/2000US6026670 Apparatus for use in forming can bodies
02/08/2000US6022004 Self-lubricating fluid cylinder
02/08/2000CA2102360C Method and device for controlling, checking or optimizing pressure of cushion pin cylinders of press by discharging fluid or initial pressure
02/03/2000WO2000005517A1 Low contact force spring
02/01/2000CA2176980C 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
01/2000
01/26/2000EP0974410A2 Machine with hydraulically controlled counterpressure holding element
01/25/2000US6016680 Silent structure for a drawing die and a silent run-up unit therefor
01/11/2000CA2122205C Method and apparatus for diagnosing press cushioning device, on optimum range of blank-holding force
12/1999
12/28/1999US6006578 Die for drawing molded sheet metal parts
12/28/1999US6006564 Application of dry lubricant to forming dies and forging dies that operate with high force
12/21/1999US6003359 Progressive deep-drawing machine
12/21/1999CA2151114C Press having cushioning cylinders each having two chambers whose pressure difference is adjustable to control blank-holding force
11/1999
11/30/1999US5992206 Clinching die having metallic restoring member
11/25/1999DE19821159A1 Deep draw press
11/23/1999CA2124173C Method and apparatus for adjusting pressure of cushioning pneumatic cylinder pressure on press, when cushion platen is at its setup position
11/23/1999CA2091570C Electromagnetic re-draw sleeve actuator
11/18/1999WO1999058265A1 A deep drawing press with a ram hammer and drawing cushion driven by threaded spindles and spindle nuts
11/17/1999EP0956913A1 Noise reducing device for a drawing die and run-up unit for the blank holder
11/09/1999US5979211 Hydraulic deep drawing apparatus
11/09/1999US5979210 Drawing device for a press with control device for maintaining pressure during press stoppage
10/1999
10/19/1999US5966981 Press assembly
10/05/1999US5960665 Drawing device for drawing presses
10/05/1999CA2093383C Method and apparatus for adjusting press operating conditions depending upon dies used
10/05/1999CA2060952C Die tooling for metal working
09/1999
09/30/1999WO1999048631A1 Drawing die, drawing method using drawing die, and drawn container formed using drawing die
09/15/1999EP0695225B1 An apparatus in a hydraulic press
09/14/1999CA2006773C Method and device for pressing sheet material with a deformable punch under a ram
09/09/1999DE19808586A1 Drawing tool for drawing cylindrical cups from sheet
09/07/1999CA2080998C Method and apparatus for the local forming of brittle material
08/1999
08/25/1999EP0592670B1 Method of preventing plungers from bottoming in die cushion pin pressure equalizing system
1 ... 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20