SE7803797A - A hydraulic circuit for a press for hydro-mechanical pressing - Google Patents

A hydraulic circuit for a press for hydro-mechanical pressing


Publication number
SE7803797A SE7803797A SE7803797A SE7803797A SE 7803797 A SE7803797 A SE 7803797A SE 7803797 A SE7803797 A SE 7803797A SE 7803797 A SE7803797 A SE 7803797A SE 7803797 A SE7803797 A SE 7803797A
Prior art keywords
throttle valve
Prior art date
Application number
Other languages
Swedish (sv)
Other versions
SE425146B (en
J Spacek
J Kosek
V Smrcek
V Penaz
J Hrdina
M Sykora
J Hajek
Original Assignee
Vyzk Ustav Tvarecich Stroju
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to CS225677A priority Critical patent/CS190125B1/en
Application filed by Vyzk Ustav Tvarecich Stroju filed Critical Vyzk Ustav Tvarecich Stroju
Publication of SE7803797A publication Critical patent/SE7803797A/en
Publication of SE425146B publication Critical patent/SE425146B/en



    • B21D22/00Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20Deep-drawing
    • B21D22/205Hydro-mechanical deep-drawing


There is disclosed a hydraulic circuit of a press for the hydromechanical drawing of pressings or workpieces in a pressure chamber forming the drawing die which includes at least two spaces for the fluid separated from each other by at least one piston transmitter. At least one of the spaces for the fluid in the pressure chamber separated from the pressure fluid for the forming of the pressing by the piston transmitter is connected by means of a connection branch with a controlled throttle valve with the hydraulic unit of the main working cylinder of the press which drives the drawing punch of the press. To the space for the fluid in the pressure chamber, which is separated by the piston transmitter from the pressure fluid for forming the pressing, is connected a filling branch with a return valve incorporated by means of a hydraulic distributor in the circuit of a hydrogenerator for driving the main working cylinder of the press. The controlled throttle valve is incorporated in a feedback circuit including an auxiliary hydrogenerator as a reference source of pressure fluid for the piston of the controlled throttle valve.
SE7803797A 1977-04-05 1978-04-04 Hydraulic circuit for a device for hydromechanical drawing, serskilt deep drawing objects plat SE425146B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CS225677A CS190125B1 (en) 1977-04-05 1977-04-05 Hydraulic press periphery for hydromechanic drawing

Publications (2)

Publication Number Publication Date
SE7803797A true SE7803797A (en) 1978-10-06
SE425146B SE425146B (en) 1982-09-06



Family Applications (1)

Application Number Title Priority Date Filing Date
SE7803797A SE425146B (en) 1977-04-05 1978-04-04 Hydraulic circuit for a device for hydromechanical drawing, serskilt deep drawing objects plat

Country Status (6)

Country Link
US (1) US4229965A (en)
JP (1) JPS53128566A (en)
CS (1) CS190125B1 (en)
DD (1) DD136030A1 (en)
DE (1) DE2813152A1 (en)
SE (1) SE425146B (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5592430U (en) * 1978-12-20 1980-06-26
JPS5956925A (en) * 1982-09-27 1984-04-02 Matsushita Electric Works Ltd Opposed liquid pressure forming method
JPH0234696B2 (en) * 1982-11-19 1990-08-06 Matsushita Electric Works Ltd
JPS6217995Y2 (en) * 1983-10-24 1987-05-08
DE3716308A1 (en) * 1987-05-15 1988-11-24 Paals Packpressen Fabrik Gmbh Baler
JPH0331448Y2 (en) * 1988-03-04 1991-07-04
US5100113A (en) * 1988-10-18 1992-03-31 Aida Engineering Co., Ltd. Pneumatic die cushion equipment
SE466769B (en) * 1991-04-24 1992-03-30 Stromsholmens Mek Verkstad Gasfjaeder after compression has a foerdroejd aatergaang to the original Height
US5588641A (en) * 1993-11-26 1996-12-31 Stromsholmens Mekaniska Verkstad Ab Gas spring which after compression has a time delayed return to its original length
WO1993019866A1 (en) * 1992-03-27 1993-10-14 Mannesmann Rexroth Gmbh Hydraulic drive for a press, in particular a sheet-shaping press
DE19626692A1 (en) * 1996-07-03 1998-01-15 Zeuna Staerker Kg An exhaust purification device for an internal combustion engine as well as processes for their preparation
DE19711207A1 (en) * 1997-03-18 1998-09-24 Schuler Pressen Gmbh & Co Puller for a press
DE19952104A1 (en) * 1999-10-29 2001-05-03 Schuler Smg Gmbh & Co Kg Metal sheet deforming device, access aperture of lower tool of which is part of pressure cavity of piston-cylinder unit
DE19955748A1 (en) * 1999-11-19 2001-05-23 Mannesmann Rexroth Ag 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
US6412616B1 (en) * 2000-02-22 2002-07-02 Lockheed Martin Corporation Energy dissipation system
SE519035C2 (en) 2000-11-09 2002-12-23 Flow Holdings Sagl High-pressure press comprising a floating piston, use of and method of operating such a press
DE102007023669B4 (en) * 2007-05-22 2010-12-02 Cosma Engineering Europe Ag Ignition device for explosion forming
JP5466834B2 (en) * 2008-05-22 2014-04-09 株式会社小松製作所 Die cushion device
US8534106B2 (en) * 2009-10-19 2013-09-17 Ford Global Technologies, Llc Hydromechanical drawing process and machine
US8701453B2 (en) * 2010-12-23 2014-04-22 Ford Global Technologies, Llc Method of reducing cycle time in a hydro-mechanical forming process and a tool for hydro-mechanically forming a part
US20140020534A1 (en) * 2012-07-17 2014-01-23 National Taiwan Ocean University Fine hydro-blanking device
CN105710218B (en) * 2016-04-01 2017-09-29 中航飞机股份有限公司西安飞机分公司 A kind of flexible diel of plate semicanal and process for stamping
CN106064192B (en) * 2016-04-05 2018-03-13 天津市天锻压力机有限公司 A kind of hydraulic servo control system of liquid-filling shaping hydraulic machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2890669A (en) * 1954-09-10 1959-06-16 Floyd M Williamson Mechanisms for hydraulically controlling movement of pads in dies
US3085530A (en) * 1958-10-22 1963-04-16 Floyd M Williamson Hydraulic press ram cushion
US3491565A (en) * 1966-08-17 1970-01-27 Barogenics Inc Equipment adapted for hydrostatic extrusion and other uses

Also Published As

Publication number Publication date
SE425146B (en) 1982-09-06
DD136030A1 (en) 1979-06-13
JPS53128566A (en) 1978-11-09
CS190125B1 (en) 1979-05-31
DE2813152A1 (en) 1978-10-19
US4229965A (en) 1980-10-28

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