US3596485A - Hydromechanical method and device for the reverse redrawing of sheet metal - Google Patents

Hydromechanical method and device for the reverse redrawing of sheet metal Download PDF

Info

Publication number
US3596485A
US3596485A US857030A US3596485DA US3596485A US 3596485 A US3596485 A US 3596485A US 857030 A US857030 A US 857030A US 3596485D A US3596485D A US 3596485DA US 3596485 A US3596485 A US 3596485A
Authority
US
United States
Prior art keywords
container
blank
pressure
holddown
plunger
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.)
Expired - Lifetime
Application number
US857030A
Other languages
English (en)
Inventor
Eugen Burk
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.)
SEG Hausgeraete GmbH
Original Assignee
Siemens Elektrogaerate 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 Siemens Elektrogaerate GmbH filed Critical Siemens Elektrogaerate GmbH
Application granted granted Critical
Publication of US3596485A publication Critical patent/US3596485A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

Definitions

  • Blanks for sheet metal are drawn with the aid of a pressure container, a liquid displacing annular plunger pres sure tightly glidable in the container and having a top adapted for accommodating the blank, a holddown for pressing the blank against the top, and a draw punch passing through the holddown.
  • the container and plunger are first filled with liquid up to the top. Then the blank is placed onto the top, whereafter the holddown is forced downwardly against the blank, thereby pressing the plunger into the container.
  • the increasing liquid pressure in the container draws the blank to a shape bulging upwardly into the holddown. Thereafter, the blank is reversely redrawn into the pressure container by pressing the punch from above against the blank and downwardly into the container.
  • the displacing plunger 4 thus is pressed into contact of its top flange with the tool bottom portion 1 (FIG. 2), while the correspondingly in-, creasing liquid pressure draws the blank 7 to the cup shape ap' parent from FIG. 2.
  • the bottom of the draw punch 9 may then form a limiting stop.
  • additional stops or abutments may also be inserted so as to form part of the holddown member.
  • the pressure container and the annular plunger glidable in the container are filled with liquid up to the top rim, whereafter the blank is placedupon theannular top of the displacement plunger and so loaded by the holddown'as to press the displacement plunger into the pressure container.
  • the liquid pressure thus belng increased in the interior of the container and plunger is deformed into the hollow space formed within the annular holddown and, as the case may be, also by the withdrawn drawing punch. This results in preshaping the blank to a bulging or cup shape by the hydromechanical action.
  • the predrawing operation does not require any particular control or regulation of the liquid quantity because the volume er liquid displaced can readily be so dimensioned as to render further control unnecessary.
  • the reverse redrawing operation requires controlling the liquid to obtain a predetermined pressure because the volume of liquid in the pressure container must become reduced during redrawing.
  • FIG. 1, 2 and 3 illustrate the reverse redrawing device in diametrical section through the essential components and in three different drawing stages respectively; and FIG. 4 shows a modified detail of the same device.
  • the bottom portion 1 of the tool assembly to be used in, or as part of, a punch press, is designed as a pressure container in whose interior 2 an annular displacement plunger 4 is glidably displaceable.
  • the plunger 4 is provided with sealing rings at its periphery for maintaining a liquidtight and pressuretight seal.
  • the top of the plunger 4 forms a flange above the container 1 and has a top face 5 for accommodating a blank '7.
  • a sealing ring 6 surrounding the tubular hollow of the plunger t is in workpiece. This can be done, for example, by providing cor-- respondingly' adjustable or exchangeable stops between the bottom portion l and the displacing plunger 4, such as the inserted stop 15 shown in FIG. 4.
  • FIG. 3 shows how thereafter the punch 9 reversely draws the predrawn workpiece '7 into the pressure container. During this operation, liquid is issued from the pressure container into the tank 12 in accordance with the predetermined pressure set by the control valve ill.
  • the liquid used for the method and device according to the invention may be water.
  • the device for performing the method according to the invention is not limited to the embodiment illustrated but that a variety of shapes can be drawn during the predrawing stroke as well as during the reverse redrawing stroke. For predrawing it is merely to be taken into account redrawing operation.
  • the blank 7 is pressed against the seal 6 by meansof an holddown member 8 whose hollow is traversed by a drawing plunger 9.
  • the pressure space 2 within the tool bottorn portion 1 is connected through pipes and a V check valve 10 as well as an overpressure valve lll to a tank 12.
  • FIG. ,1 shows the tool assembly open.
  • the interior of the pressure space 2 within the tool bottom portion 1 and within the plunger 4 has been completely'filled with liquid and a invention.
  • a hydromechanical reverse redrawing method for shaping blanks of sheet metal with the aid of a pressure container, a liquid displacing annular plunger pressure tightly glidable in said container and having outside said container a top adapted for accommodating a blank, 21 holddown for pressing the blank against the top and a draw punch passing through the holddown which method comprises the steps of filling the container and plunger with liquid up to the top, placing the blank onto the top, forcing the holddown against the blank and thereby pressing the plunger into the containerwhereby the increasing liquid pressure draws the blank to a preshape bulging upwardly into the holddown, and thereafter reversely redrawing the blank into the pressure container by pressing the punch from above against the preshaped blank and downwardly into the container.
  • a hydromechanical reverse redrawing device for shaping blanks of sheet metal comprising an upwardly open container for pressure liquid having liquid supply ducts, a plunger having a hollow and being glidably and pressure tightly displaceable in said container, said plunger having a flange with a top outside and above said container and having scalable means on said top for receiving the workpiece blank across the hollow so that the blank when pressed against the plunger forms a closure of said container, an holddown movable under pressure toward the container to force the plunger into the container whereby the increasing liquid pressure draws the workpiece blank to a shape bulging upwardly into the holddown, and a draw punch vertically movable in the hollow of said holddown for reversely redrawing the preshaped workpiece by pressing it from above into the container.
  • said punch when in its top position, forming within the hollow of said holddown an

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
US857030A 1968-09-12 1969-09-11 Hydromechanical method and device for the reverse redrawing of sheet metal Expired - Lifetime US3596485A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1777153A DE1777153C3 (de) 1968-09-12 1968-09-12 Vorrichtung zum hydromechanischen Tiefziehen

Publications (1)

Publication Number Publication Date
US3596485A true US3596485A (en) 1971-08-03

Family

ID=5703063

Family Applications (1)

Application Number Title Priority Date Filing Date
US857030A Expired - Lifetime US3596485A (en) 1968-09-12 1969-09-11 Hydromechanical method and device for the reverse redrawing of sheet metal

Country Status (10)

Country Link
US (1) US3596485A (enrdf_load_stackoverflow)
JP (1) JPS51558B1 (enrdf_load_stackoverflow)
AT (1) AT291714B (enrdf_load_stackoverflow)
BE (1) BE738685A (enrdf_load_stackoverflow)
CH (1) CH496491A (enrdf_load_stackoverflow)
CS (1) CS168517B2 (enrdf_load_stackoverflow)
DE (1) DE1777153C3 (enrdf_load_stackoverflow)
FR (1) FR2017904A1 (enrdf_load_stackoverflow)
GB (1) GB1252307A (enrdf_load_stackoverflow)
SE (1) SE347670B (enrdf_load_stackoverflow)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3890819A (en) * 1972-07-25 1975-06-24 Centro Speriment Metallurg Apparatus for deforming sheet metal blanks by fluid pressure
US4314468A (en) * 1978-12-11 1982-02-09 Societe De Vente De L' Aluminium Pechiney Stamping in liquid female tool
US4361020A (en) * 1977-07-05 1982-11-30 Toyo Seikan Kaisha, Limited Drawing apparatus
US4419876A (en) * 1979-12-12 1983-12-13 Tovarny Strojirenske Techniky, Koncern Pressure control apparatus for hydromechanical drawing
DK156034B (da) * 1977-04-28 1989-06-19 Stolle Corp Fremgangsmaade og indretning til ved dybtraekning i en presse at forme en skaal udfra et metalemne
US5157969A (en) * 1989-11-29 1992-10-27 Armco Steel Co., L.P. Apparatus and method for hydroforming sheet metal
US5865054A (en) * 1989-08-24 1999-02-02 Aquaform Inc. Apparatus and method for forming a tubular frame member
WO2002024370A3 (en) * 2000-09-22 2002-07-04 Univ Michigan State Hydroforming of composite materials
US7007531B2 (en) * 2001-03-02 2006-03-07 Audi Ag Forming tool for hydromechanically deep-drawing workpieces from sheet metal blanks
US20060185413A1 (en) * 2005-02-07 2006-08-24 Yasuhiro Nobata Hydroforming machine and a method of hydroforming
WO2009004617A1 (en) * 2007-07-02 2009-01-08 Pessach Seidel Device and method for hydroforming sheet metal
US20090205394A1 (en) * 2008-02-14 2009-08-20 Luckey Jr George Method and apparatus for superplastic forming
US8756970B2 (en) 2011-03-14 2014-06-24 Ford Global Technologies, Llc Method of drawing a blank by preforming a channel in a preform that is subsequently drawn into a die cavity

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH633203A5 (de) 1978-03-31 1982-11-30 Alusuisse Verfahren und vorrichtung zum herstellen einer verpackungsmulde in einer metall-kunststoffverbundfolie.
DE4134596A1 (de) * 1991-10-18 1993-04-22 Eichelberg & Co Gmbh H D Verfahren zum hydrostatischen umformen von insbesondere ebenen flaechenhaften blechkoerpern aus kaltumformbarem metall und diesbezueglicher vorrichtung
CN109834152B (zh) * 2019-03-13 2020-10-27 中南大学 一种板材电磁力反胀拉深成形方法及成形装置
DE102019126708B4 (de) * 2019-10-02 2021-07-22 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung einer Batteriegehäuseanordnung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3208255A (en) * 1961-07-07 1965-09-28 Siemens Elektrogeraete Gmbh Method and apparatus for hydraulic deep-drawing of sheet material
US3504070A (en) * 1968-02-19 1970-03-31 Comet Ind Vacuum forming method and apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3208255A (en) * 1961-07-07 1965-09-28 Siemens Elektrogeraete Gmbh Method and apparatus for hydraulic deep-drawing of sheet material
US3504070A (en) * 1968-02-19 1970-03-31 Comet Ind Vacuum forming method and apparatus

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3890819A (en) * 1972-07-25 1975-06-24 Centro Speriment Metallurg Apparatus for deforming sheet metal blanks by fluid pressure
DK156034B (da) * 1977-04-28 1989-06-19 Stolle Corp Fremgangsmaade og indretning til ved dybtraekning i en presse at forme en skaal udfra et metalemne
US4361020A (en) * 1977-07-05 1982-11-30 Toyo Seikan Kaisha, Limited Drawing apparatus
US4314468A (en) * 1978-12-11 1982-02-09 Societe De Vente De L' Aluminium Pechiney Stamping in liquid female tool
US4419876A (en) * 1979-12-12 1983-12-13 Tovarny Strojirenske Techniky, Koncern Pressure control apparatus for hydromechanical drawing
US5865054A (en) * 1989-08-24 1999-02-02 Aquaform Inc. Apparatus and method for forming a tubular frame member
US5157969A (en) * 1989-11-29 1992-10-27 Armco Steel Co., L.P. Apparatus and method for hydroforming sheet metal
US5372026A (en) * 1989-11-29 1994-12-13 Armco Steel Company Apparatus and method for hydroforming sheet metal
WO2002024370A3 (en) * 2000-09-22 2002-07-04 Univ Michigan State Hydroforming of composite materials
US6631630B1 (en) 2000-09-22 2003-10-14 Board Of Trustees Of Michigan State University Hydroforming of composite materials
US7007531B2 (en) * 2001-03-02 2006-03-07 Audi Ag Forming tool for hydromechanically deep-drawing workpieces from sheet metal blanks
US20060185413A1 (en) * 2005-02-07 2006-08-24 Yasuhiro Nobata Hydroforming machine and a method of hydroforming
US7313939B2 (en) * 2005-02-07 2008-01-01 Toyota Jidosha Kabushiki Kaisha Hydroforming machine and a method of hydroforming
WO2009004617A1 (en) * 2007-07-02 2009-01-08 Pessach Seidel Device and method for hydroforming sheet metal
US20090205394A1 (en) * 2008-02-14 2009-08-20 Luckey Jr George Method and apparatus for superplastic forming
US7614270B2 (en) * 2008-02-14 2009-11-10 Ford Global Technologies, Llc Method and apparatus for superplastic forming
US8756970B2 (en) 2011-03-14 2014-06-24 Ford Global Technologies, Llc Method of drawing a blank by preforming a channel in a preform that is subsequently drawn into a die cavity

Also Published As

Publication number Publication date
CH496491A (de) 1970-09-30
SE347670B (enrdf_load_stackoverflow) 1972-08-14
DE1777153A1 (de) 1971-10-07
CS168517B2 (enrdf_load_stackoverflow) 1976-06-29
FR2017904A1 (enrdf_load_stackoverflow) 1970-05-22
BE738685A (enrdf_load_stackoverflow) 1970-02-16
DE1777153B2 (de) 1973-10-11
JPS51558B1 (enrdf_load_stackoverflow) 1976-01-08
DE1777153C3 (de) 1974-05-09
GB1252307A (enrdf_load_stackoverflow) 1971-11-03
AT291714B (de) 1971-07-26

Similar Documents

Publication Publication Date Title
US3596485A (en) Hydromechanical method and device for the reverse redrawing of sheet metal
US4689979A (en) Pressing method and punch and die press for the same
US2075847A (en) Art of drawing
US3786667A (en) Apparatus for and method of making a nestable container
US3771344A (en) Apparatus for stripping container bodies from metal working punches
HK18988A (en) Shell reforming method and apparatus
US3623347A (en) Method for the hydromechanical drawing of workpieces
CN101244439A (zh) 一种机械-液压辅助反拉深模具的设计方法
GB1153664A (en) Forming method and apparatus
US3580041A (en) Die assembly
CN107052126A (zh) 管件液压成形设备
US3286496A (en) Apparatus for hydraulic deep-drawing of sheet metal
US2952875A (en) Apparatus for the drawing of plastics
DE10164662A1 (de) Vorrichtung zum hydromechanischen Tiefziehen
KR101536447B1 (ko) 하이드로포밍 장치 및 방법
CN206952043U (zh) 一种冲压模具
GB2131334A (en) Tapered two-piece metal containers
GB1018018A (en) Method and means of making valve bodies
US3220235A (en) Method and apparatus for making bulged articles
US3568487A (en) Apparatus for hydromechanical deep-drawing
GB778545A (en) Method and apparatus for making a container body of sheet metal
JPH0890094A (ja) 段付絞り製品成形装置
NO125877B (enrdf_load_stackoverflow)
DE2002748C3 (de) Gesamtverbundwerkzeug zum Formen von Behaltern aus dünner Folie
GB1109722A (en) Apparatus for deep drawing metal