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EP0074421A1 - Agencement d'emboutissage pour presses à poinçon d'emboutissage actionné mécaniquement - Google Patents

Agencement d'emboutissage pour presses à poinçon d'emboutissage actionné mécaniquement Download PDF

Info

Publication number
EP0074421A1
EP0074421A1 EP81107203A EP81107203A EP0074421A1 EP 0074421 A1 EP0074421 A1 EP 0074421A1 EP 81107203 A EP81107203 A EP 81107203A EP 81107203 A EP81107203 A EP 81107203A EP 0074421 A1 EP0074421 A1 EP 0074421A1
Authority
EP
European Patent Office
Prior art keywords
sheet metal
piston
ram
pressure medium
metal holder
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP81107203A
Other languages
German (de)
English (en)
Other versions
EP0074421B1 (fr
Inventor
Heinz Gerber
Klaus Adam
Heinz Horn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
L Schuler GmbH
Original Assignee
L Schuler GmbH
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
Application filed by L Schuler GmbH filed Critical L Schuler GmbH
Priority to EP81107203A priority Critical patent/EP0074421B1/fr
Priority to DE8181107203T priority patent/DE3170614D1/de
Priority to PCT/DE1982/000181 priority patent/WO1983000821A1/fr
Priority to US06/525,906 priority patent/US4499750A/en
Priority to JP57502797A priority patent/JPS58501419A/ja
Priority to BR8207859A priority patent/BR8207859A/pt
Publication of EP0074421A1 publication Critical patent/EP0074421A1/fr
Application granted granted Critical
Publication of EP0074421B1 publication Critical patent/EP0074421B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
    • B21D24/04—Blank holders; Mounting means therefor
    • B21D24/08—Pneumatically or hydraulically loaded blank holders

Definitions

  • the invention relates to a drawing device for presses with a mechanically driven ram and with a sheet metal holder, the holding force acting on the sheet metal, counteracting the drawing direction, is exerted via a pressure plate by means of a drawing cushion piston which supports it and is pressurized with pressure medium in a fixed drawing cushion cylinder.
  • the sheet metal is first pressed against the sheet holder by the drawing ring and then moved together with the latter against the pressure force acting in the drawing cushion cylinder, the sheet metal held between the sheet holder and drawing ring being simultaneously pulled by the drawing die of the one fixed on the press table Tool is deformed.
  • the drawing plunger moves the sheet metal holder against the pressure force acting on the drawing cushion piston, the drawing plunger also having to overcome the inertia force caused by the acceleration of the movable sheet metal holder and die cushion mass.
  • the sheet metal holder which is supported on the die cushion piston, namely forms a rigid system with a large, coherent mass, which has to be accelerated suddenly from rest to the speed of impact of the die rod.
  • a resilient member is arranged between the sheet metal holder and the movable masses of the die cushion.
  • the movable mass of the die cushion is accelerated in time after the mass of the sheet metal holder, so that the inertial forces of the entire system do not add up.
  • the resilient link causes a steady increase in speed of the die cushion piston up to the speed of the die ram.
  • This steady increase in speed of the die cushion piston reduces the effective inertia force of the die cushion piston.
  • the plunger hits the sheet at rest, lying on the sheet holder, at its given speed in this range of motion, so that there is an undamped impact.
  • the object of the invention is to avoid or at least reduce this impact impact in a pulling device of the type mentioned at the outset.
  • This object is achieved in that a piston is attached to the pressure surface acting in the direction of drawing, and that a ram path-dependent control is provided, by which the plunger is placed on the sheet metal holder by pressing the active surface with pressure medium on a movement can be accelerated in the direction of pull.
  • the sheet metal holder with the sheet metal lying thereon is already moving in the direction of drawing when the drawing ram strikes the sheet metal; the relative speed between the ram and the sheet is therefore lower than when it hits the stationary sheet. The impact impact is thereby mitigated or avoided entirely.
  • a particularly sensitive adjustment of the movement of the sheet metal holder to the movement of the drawing ram can be achieved in that the control influences the application of pressure medium to the active surface via a proportional oil valve.
  • the movement of the sheet metal holder in the drawing direction can expediently be accelerated to a speed which is equal to or slightly less than the speed of the drawing ram when it is placed on the sheet metal holder.
  • a pulling device is shown in a vertical section as an exemplary embodiment of the invention.
  • a lower tool 3 with a fixed punch 4 and a sheet metal holder 5 movable in the drawing direction is arranged on a press table 2.
  • the sheet metal holder 5 is supported via pressure pins 6 on a pressure plate 7, which is attached to the upper end of a piston rod 8, to which a piston 9 and a die cushion piston 10 are rigidly attached.
  • the piston 9 is guided in a cylinder 11 fixed to the frame and has an upper active surface which can be acted upon in the direction of drawing.
  • the drawing cushion piston 10 is guided in a drawing cushion cylinder 12 fixed to the frame, in the lower region of which an annular piston 13 surrounding the piston rod 8 is also guided, the movements of which in the drawing direction downward through the end wall of the drawing cushion cylinder 12 and upward through an inner annular collar 14 on the drawing cushion cylinder 12 are limited.
  • a bladder accumulator 15 is connected to the pressure medium space formed under the annular piston 13 in the die cushion cylinder 12.
  • a pressure medium supply 16 via a check valve 17 and a pressure medium discharge line 18 via a pressure relief valve 19 are connected to the pressure medium space formed under the drawing cushion piston 10 in the drawing cushion cylinder 12 above the annular collar 14.
  • a Pressure medium supply and discharge connected via a switchable valve 20.
  • the valve 20 is connected via an operative connection 21 to a ram path-dependent control, which consists of a cam follower 22 and a cam 23, which rotates synchronously with a mechanical drive (not shown in the drawing) for a drawing ram 24.
  • the drawing tappet 24 carries on its underside a drawing ring 25 opposite the sheet metal holder 5 and an ejector 26 opposite the drawing punch 4.
  • a working cycle of the pulling device begins in the - shown in the drawing - initial position, in which a plate 27 rests on the plate holder 5, which is in its highest position, in which it rests against a collar 28 of the lower tool 3 from below.
  • the plunger 24 begins its downward movement.
  • the control causes the active surface on the top of the piston 9 to be pressurized, so that the piston rod 8 with all the parts attached to it and the sheet holder 5 are accelerated in the drawing direction.
  • the sheet metal holder 5 with the sheet metal 27 lying thereon drops so far that the upper sides of the sheet metal holder 5 and the lower tool 3 are at the same height and the sheet metal 27 rests on the punch 4.
  • the tappet 24, which moves faster in the direction of drawing, has reached the top of the plate 27 with the drawing ring 25.
  • the pressure medium enclosed in the pressure medium space under the die cushion piston 10 has also shifted the annular piston 13 by its stroke 29 until it abuts the lower end wall of the die cushion piston 12.
  • the stroke 29 is equal to the extent to which the sheet metal holder 5 projects in its highest position with its upper side above the upper side of the lower tool 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
EP81107203A 1981-09-12 1981-09-12 Agencement d'emboutissage pour presses à poinçon d'emboutissage actionné mécaniquement Expired EP0074421B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP81107203A EP0074421B1 (fr) 1981-09-12 1981-09-12 Agencement d'emboutissage pour presses à poinçon d'emboutissage actionné mécaniquement
DE8181107203T DE3170614D1 (en) 1981-09-12 1981-09-12 Deep-drawing arrangement for presses with mechanically driven drawing punch
PCT/DE1982/000181 WO1983000821A1 (fr) 1981-09-12 1982-09-07 Dispositif d'etirage pour presses muni d'un poinçon actionne mecaniquement
US06/525,906 US4499750A (en) 1981-09-12 1982-09-07 Drawing device for presses with mechanically driven drawing ram
JP57502797A JPS58501419A (ja) 1981-09-12 1982-09-07 機械的に駆動されるポンチを備えたプレスの絞り装置
BR8207859A BR8207859A (pt) 1981-09-12 1982-09-07 Instalacao de embutir para prensas com porta-puncao de embutir acionado mecanicamente

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP81107203A EP0074421B1 (fr) 1981-09-12 1981-09-12 Agencement d'emboutissage pour presses à poinçon d'emboutissage actionné mécaniquement

Publications (2)

Publication Number Publication Date
EP0074421A1 true EP0074421A1 (fr) 1983-03-23
EP0074421B1 EP0074421B1 (fr) 1985-05-22

Family

ID=8187905

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81107203A Expired EP0074421B1 (fr) 1981-09-12 1981-09-12 Agencement d'emboutissage pour presses à poinçon d'emboutissage actionné mécaniquement

Country Status (6)

Country Link
US (1) US4499750A (fr)
EP (1) EP0074421B1 (fr)
JP (1) JPS58501419A (fr)
BR (1) BR8207859A (fr)
DE (1) DE3170614D1 (fr)
WO (1) WO1983000821A1 (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3619109A1 (de) * 1985-10-30 1987-05-07 Warnke Umformtech Veb K Einrichtung zur auftreffstossdaempfung fuer ziehkissen an pressen
GB2197813A (en) * 1986-11-27 1988-06-02 Mueller Weingarten Maschf Controlling or adjusting blank holder force during a drawing process
US4821552A (en) * 1986-11-28 1989-04-18 L. Schuler, Gmbh Drawing mechanism for a press
DE3737967A1 (de) * 1987-11-07 1989-05-18 Mueller Weingarten Maschf Pneumatische zieheinrichtung fuer mit gesteuerter stossdaempfung zwischen druckwange und druckzylinder der zieheinrichtung
EP0268893A3 (en) * 1986-11-28 1989-12-27 L. Schuler Gmbh Drawing device for a press
EP0417753A3 (en) * 1989-09-12 1991-06-05 Maschinenfabrik Mueller-Weingarten Ag Mechanical or hydraulic press with drawing or pressing station for multiple stage press
US5138857A (en) * 1990-04-23 1992-08-18 Maschinenfabrik Mueller-Weingarten Ag Drawing device in a press for drawing shaped sheet-metal parts
US5255552A (en) * 1991-02-12 1993-10-26 Maschinenfabrik J. Dieffenbacher Gmbh & Co. Hydroelastic deep-drawing apparatus
EP0956913A1 (fr) * 1998-05-11 1999-11-17 Umix Co., Ltd. Dispositif de réduction du bruit dans un outil d'emboutissage et dispositif d'accélération du serre-flan
EP1034858A3 (fr) * 1999-03-09 2002-04-17 Umix Co., Ltd. Structure silentieux pour machine outil, structure silentieux pour presse, structure silentieux pour matice d'étirage profond et dispositif d'accélération silentieux pour cette machine
DE102010019324A1 (de) * 2010-05-03 2011-11-03 Schuler Pressen Gmbh & Co. Kg Hydraulischer Zylinder für ein hydraulisches Ziehkissen
EP2335840A3 (fr) * 2009-12-15 2014-12-31 Robert Bosch GmbH Entraînement de presse hydraulique
WO2017072173A1 (fr) * 2015-10-29 2017-05-04 Hatebur Umformmaschinen Ag Dispositif actionneur
DE102015016773A1 (de) 2015-12-23 2017-06-29 Wieland Petter Verfahren zum Bearbeiten und zur Formgebung metallischer und anderer Werkstoffe

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4589270A (en) * 1985-04-30 1986-05-20 Reynolds Metals Company Hydraulic bottom former
JPS6313632A (ja) * 1986-07-03 1988-01-20 Hideo Hoshi 複合プレス金型装置
DE3807683A1 (de) * 1988-03-09 1989-09-21 Schuler Gmbh L Ziehapparat in ziehstufen von pressen
US4850282A (en) * 1988-07-18 1989-07-25 Stephen Postic Portable food tray
US5249447A (en) * 1989-02-16 1993-10-05 Toyo Seikan Kaisha Ltd. Process for preparation of thickness-reduced deep-draw-formed can
US5003807A (en) * 1989-10-30 1991-04-02 Teledyne Industries, Inc. Press assembly and method of operation
US5065606A (en) * 1989-10-30 1991-11-19 Teledyne Industries, Inc. Press assembly with cushion assembly and auxiliary apparatus
DE4031645A1 (de) * 1990-10-05 1992-04-09 Dieffenbacher Gmbh Maschf Steuerung fuer eine hydroelastische tiefzieheinrichtung
JP2727954B2 (ja) * 1994-03-03 1998-03-18 トヨタ自動車株式会社 プレス装置
JP2812201B2 (ja) * 1994-07-15 1998-10-22 トヨタ自動車株式会社 プレス装置
JP3060908B2 (ja) * 1994-12-21 2000-07-10 トヨタ自動車株式会社 プレス機械の均圧装置
DE19538316A1 (de) * 1995-10-14 1997-04-17 Schuler Pressen Gmbh & Co Ziehvorrichtung für eine Presse
JP3850663B2 (ja) 1998-07-23 2006-11-29 テレダイン・インダストリーズ・インコーポレーテッド 低接触力のばね
US6322059B1 (en) 1998-07-23 2001-11-27 Barnes Group Inc. Low contact force spring
JP4315547B2 (ja) * 1999-11-12 2009-08-19 株式会社小松製作所 プレッシャーピン均圧化装置の油圧補償装置
US7775966B2 (en) 2005-02-24 2010-08-17 Ethicon Endo-Surgery, Inc. Non-invasive pressure measurement in a fluid adjustable restrictive device
US8066629B2 (en) 2005-02-24 2011-11-29 Ethicon Endo-Surgery, Inc. Apparatus for adjustment and sensing of gastric band pressure
US7658196B2 (en) 2005-02-24 2010-02-09 Ethicon Endo-Surgery, Inc. System and method for determining implanted device orientation
US7699770B2 (en) 2005-02-24 2010-04-20 Ethicon Endo-Surgery, Inc. Device for non-invasive measurement of fluid pressure in an adjustable restriction device
US7927270B2 (en) 2005-02-24 2011-04-19 Ethicon Endo-Surgery, Inc. External mechanical pressure sensor for gastric band pressure measurements
US8016744B2 (en) 2005-02-24 2011-09-13 Ethicon Endo-Surgery, Inc. External pressure-based gastric band adjustment system and method
US7775215B2 (en) 2005-02-24 2010-08-17 Ethicon Endo-Surgery, Inc. System and method for determining implanted device positioning and obtaining pressure data
US8870742B2 (en) 2006-04-06 2014-10-28 Ethicon Endo-Surgery, Inc. GUI for an implantable restriction device and a data logger
US8152710B2 (en) 2006-04-06 2012-04-10 Ethicon Endo-Surgery, Inc. Physiological parameter analysis for an implantable restriction device and a data logger
US8187163B2 (en) 2007-12-10 2012-05-29 Ethicon Endo-Surgery, Inc. Methods for implanting a gastric restriction device
US8100870B2 (en) 2007-12-14 2012-01-24 Ethicon Endo-Surgery, Inc. Adjustable height gastric restriction devices and methods
US8377079B2 (en) 2007-12-27 2013-02-19 Ethicon Endo-Surgery, Inc. Constant force mechanisms for regulating restriction devices
US8142452B2 (en) 2007-12-27 2012-03-27 Ethicon Endo-Surgery, Inc. Controlling pressure in adjustable restriction devices
US8591395B2 (en) 2008-01-28 2013-11-26 Ethicon Endo-Surgery, Inc. Gastric restriction device data handling devices and methods
US8192350B2 (en) 2008-01-28 2012-06-05 Ethicon Endo-Surgery, Inc. Methods and devices for measuring impedance in a gastric restriction system
US8337389B2 (en) 2008-01-28 2012-12-25 Ethicon Endo-Surgery, Inc. Methods and devices for diagnosing performance of a gastric restriction system
US8221439B2 (en) 2008-02-07 2012-07-17 Ethicon Endo-Surgery, Inc. Powering implantable restriction systems using kinetic motion
US7844342B2 (en) 2008-02-07 2010-11-30 Ethicon Endo-Surgery, Inc. Powering implantable restriction systems using light
US8114345B2 (en) 2008-02-08 2012-02-14 Ethicon Endo-Surgery, Inc. System and method of sterilizing an implantable medical device
US8057492B2 (en) 2008-02-12 2011-11-15 Ethicon Endo-Surgery, Inc. Automatically adjusting band system with MEMS pump
US8591532B2 (en) 2008-02-12 2013-11-26 Ethicon Endo-Sugery, Inc. Automatically adjusting band system
US8034065B2 (en) 2008-02-26 2011-10-11 Ethicon Endo-Surgery, Inc. Controlling pressure in adjustable restriction devices
US8187162B2 (en) 2008-03-06 2012-05-29 Ethicon Endo-Surgery, Inc. Reorientation port
US8233995B2 (en) 2008-03-06 2012-07-31 Ethicon Endo-Surgery, Inc. System and method of aligning an implantable antenna
JP5844768B2 (ja) * 2013-04-11 2016-01-20 アイダエンジニアリング株式会社 ダイクッション装置
CN109834972B (zh) * 2017-11-28 2021-02-12 广西南宁桂尔创环保科技有限公司 一种可降噪的冲压装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD73020A (fr) *
US3456478A (en) * 1967-07-07 1969-07-22 Bliss Co Hydraulic locking cylinders
DE1452943C (de) * 1965-02-23 1973-03-01 VEB Kombinat Umformtechnik Erfurt, χ 5010 Erfurt Zieheinrichtung
DE2755495A1 (de) * 1976-12-14 1978-06-15 Redicon Corp Zweiseitig arbeitende behaelterformpresse

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1550626A (en) * 1923-11-08 1925-08-18 Marquette Tool & Mfg Co Power press
US1884700A (en) * 1930-04-19 1932-10-25 American Can Co Drawing press hydraulic cushion
FR780177A (fr) * 1933-10-26 1935-04-19 Berlin Erfurter Maschinenfabri Porte-tôle hydraulique pour presses, machines à estamper et autres analogues
FR1097681A (fr) * 1953-02-25 1955-07-08 Système auxiliaire pour outils d'emboutissage profond pour presses à excentrique ou à friction
US3296850A (en) * 1964-08-25 1967-01-10 Rauland Corp Mask forming
US3453848A (en) * 1965-06-07 1969-07-08 Dro Eng Co Di Apparatus for deep drawing metal with hydraulically controlled dies
US3460500A (en) * 1967-02-14 1969-08-12 Carando Machine Works Flanging die
US3636748A (en) * 1969-03-24 1972-01-25 George Roberts Hall Drawing of sheet metal
US3817076A (en) * 1973-05-03 1974-06-18 Reynolds Metals Co Apparatus for and method of drawing a cup-shaped article
US3967482A (en) * 1975-03-17 1976-07-06 American Can Company Production of closed bottom shells

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD73020A (fr) *
DE1452943C (de) * 1965-02-23 1973-03-01 VEB Kombinat Umformtechnik Erfurt, χ 5010 Erfurt Zieheinrichtung
US3456478A (en) * 1967-07-07 1969-07-22 Bliss Co Hydraulic locking cylinders
DE2755495A1 (de) * 1976-12-14 1978-06-15 Redicon Corp Zweiseitig arbeitende behaelterformpresse

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3619109A1 (de) * 1985-10-30 1987-05-07 Warnke Umformtech Veb K Einrichtung zur auftreffstossdaempfung fuer ziehkissen an pressen
GB2197813A (en) * 1986-11-27 1988-06-02 Mueller Weingarten Maschf Controlling or adjusting blank holder force during a drawing process
FR2607416A1 (fr) * 1986-11-27 1988-06-03 Mueller Weingarten Maschf Dispositif pour la commande ou la regulation de la force du serre-flan d'une presse par exemple pendant une operation d'emboutissage
GB2197813B (en) * 1986-11-27 1991-07-24 Mueller Weingarten Maschf A mechanical drawing press.
US4821552A (en) * 1986-11-28 1989-04-18 L. Schuler, Gmbh Drawing mechanism for a press
EP0268894A3 (en) * 1986-11-28 1989-11-29 L. Schuler Gmbh Drawing device for a press
EP0268893A3 (en) * 1986-11-28 1989-12-27 L. Schuler Gmbh Drawing device for a press
US4896594A (en) * 1986-11-28 1990-01-30 L. Schuler Gmbh Drawing installation for a press
DE3737967A1 (de) * 1987-11-07 1989-05-18 Mueller Weingarten Maschf Pneumatische zieheinrichtung fuer mit gesteuerter stossdaempfung zwischen druckwange und druckzylinder der zieheinrichtung
EP0417753A3 (en) * 1989-09-12 1991-06-05 Maschinenfabrik Mueller-Weingarten Ag Mechanical or hydraulic press with drawing or pressing station for multiple stage press
US5138857A (en) * 1990-04-23 1992-08-18 Maschinenfabrik Mueller-Weingarten Ag Drawing device in a press for drawing shaped sheet-metal parts
US5255552A (en) * 1991-02-12 1993-10-26 Maschinenfabrik J. Dieffenbacher Gmbh & Co. Hydroelastic deep-drawing apparatus
EP0956913A1 (fr) * 1998-05-11 1999-11-17 Umix Co., Ltd. Dispositif de réduction du bruit dans un outil d'emboutissage et dispositif d'accélération du serre-flan
EP1034858A3 (fr) * 1999-03-09 2002-04-17 Umix Co., Ltd. Structure silentieux pour machine outil, structure silentieux pour presse, structure silentieux pour matice d'étirage profond et dispositif d'accélération silentieux pour cette machine
EP2335840A3 (fr) * 2009-12-15 2014-12-31 Robert Bosch GmbH Entraînement de presse hydraulique
DE102010019324A1 (de) * 2010-05-03 2011-11-03 Schuler Pressen Gmbh & Co. Kg Hydraulischer Zylinder für ein hydraulisches Ziehkissen
DE102010019324B4 (de) * 2010-05-03 2015-05-07 Schuler Pressen Gmbh Hydraulisches Ziehkissen
US9038431B2 (en) 2010-05-03 2015-05-26 Schuler Pressen Gmbh & Co. Kg Hydraulic cylinder for a hydraulic drawing cushion
EP2384834A3 (fr) * 2010-05-03 2015-10-21 Schuler Pressen GmbH & Co. KG Vérin hydraulique pour un coussin de serre-flan hydraulique
WO2017072173A1 (fr) * 2015-10-29 2017-05-04 Hatebur Umformmaschinen Ag Dispositif actionneur
CH711715A1 (de) * 2015-10-29 2017-05-15 Hatebur Umformmaschinen Ag Aktuatorvorrichtung.
EA034846B1 (ru) * 2015-10-29 2020-03-27 Хатебур Умформмашинен Аг Исполнительное устройство
US10786845B2 (en) 2015-10-29 2020-09-29 Hatebur Umformmaschinen Ag Actuator device
DE102015016773A1 (de) 2015-12-23 2017-06-29 Wieland Petter Verfahren zum Bearbeiten und zur Formgebung metallischer und anderer Werkstoffe
DE102015016773B4 (de) * 2015-12-23 2024-12-24 Wieland Petter Verfahren zum Bearbeiten und zur Formgebung metallischer und anderer Werkstoffe

Also Published As

Publication number Publication date
WO1983000821A1 (fr) 1983-03-17
JPS58501419A (ja) 1983-08-25
DE3170614D1 (en) 1985-06-27
BR8207859A (pt) 1983-08-30
JPH0422649B2 (fr) 1992-04-20
US4499750A (en) 1985-02-19
EP0074421B1 (fr) 1985-05-22

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