EP3052257B1 - Vorrichtung zum umformen eines werkstückes aus blech - Google Patents

Vorrichtung zum umformen eines werkstückes aus blech Download PDF

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Publication number
EP3052257B1
EP3052257B1 EP14777300.6A EP14777300A EP3052257B1 EP 3052257 B1 EP3052257 B1 EP 3052257B1 EP 14777300 A EP14777300 A EP 14777300A EP 3052257 B1 EP3052257 B1 EP 3052257B1
Authority
EP
European Patent Office
Prior art keywords
servo
die
assigned
workpiece
press
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.)
Active
Application number
EP14777300.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3052257A1 (de
Inventor
Michael Wolf
Ottmar Lehr
Dieter Waidmann
Peter König
Klaus LEINMÜLLER
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.)
Allgaier Werke GmbH and Co KG
Original Assignee
Allgaier Werke GmbH and Co KG
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 Allgaier Werke GmbH and Co KG filed Critical Allgaier Werke GmbH and Co KG
Priority to SI201430352T priority Critical patent/SI3052257T1/sl
Priority to PL14777300T priority patent/PL3052257T3/pl
Priority to HRP20171358TT priority patent/HRP20171358T1/hr
Publication of EP3052257A1 publication Critical patent/EP3052257A1/de
Application granted granted Critical
Publication of EP3052257B1 publication Critical patent/EP3052257B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B21D24/02—Die-cushions
    • 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
    • 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 the field of machining workpieces of metal, for example of steel or other metals. It relates to a device for forming a workpiece, in particular a sheet metal blank.
  • the machining of a workpiece may include any operations such as cutting, pressing, drawing, forming.
  • the workpieces are often cup-shaped components.
  • Pot-shaped components include a bottom, a pot wall and a drawing edge.
  • Such a component is often used as a spring cup to accommodate the ends of a coil spring. They find particular use in the automotive industry in many ways.
  • thermoforming tool for deep drawing of molded parts.
  • This comprises an annular clamping device for clamping a circuit board.
  • the clamping device encloses a space in which a bottom former and a frame former can be moved in the pulling direction. These two can have different speeds. As a result, a higher dimensional accuracy is to be achieved.
  • DE 27 27 174 C2 describes a method and apparatus for deep-drawing an aluminum container. Two parts are movable against each other, namely a punch and a die. The speed of the upwardly moving punch can be greater than the speed of the moving down die. As a result, a large thermoforming ratio is to be achieved.
  • WO 2006/000187 A1 describes a forming press for regulating a sheet holding force between the tool lower part and the tool top.
  • electric drives comprising a linear or rotary direct drive for applying a pressure to the blank holder.
  • DE 10 2012 005 635 B3 describes a system and method for forming a sheet metal blank. However, the system shown operates without pneumatic or hydraulic cushions or pressure bolts.
  • one or more die cushions are provided which move during the drawing process in displacement mode as fast as the press ram. Also during the operation, the plunger cushion is displaced with ram speed.
  • the invention has for its object to make a device, a system, a method and a workpiece such that high-strength steels are deformable without tearing occurs in the edge regions, and that a greater draw depth than previously achieved.
  • the device is designed such that the inner die and the outer die can be moved at different speeds in the drawing direction during the forming process.
  • the inner die and the outer die - optionally together with the blank holder - each associated with a special drive, which moves these two during the forming process at different speeds in the drawing direction - hereinafter called "Variotempo unit".
  • the servo unit moves at a faster speed than the plunger of the press in the pulling direction, thus in the direction of the plunger.
  • variotempo units can be provided, distributed over the effective area of the press. This can be important in large components, for example, in fenders for automobiles. In such components, the load on the workpiece - during forming or in operation - be particularly high, so it is recommended to provide a Variotempo unit at the corresponding points of the workpiece during forming.
  • a variotempo unit can be arranged in the press table or in the press ram or in these two.
  • this is a plate that distributes the pressing force on a surface.
  • Variotempo units can also be retrofitted to existing press systems.
  • the press includes u. a. a press table 1, 2 columns and a plunger 3. Between the press table 1 and the plunger 3, a die, not shown, and an unrepresented punch are arranged, the tool shells or a lower tool part wear.
  • the servo unit comprises two servo pillows 4 in the form of hydraulic chambers, further comprising a servo pump 5 and a servomotor 6.
  • a servo pump 5 In the press table. 1 bolts 7 are arranged. These are acted upon by the respective servo pad 4, so that they go up and down vertically.
  • Each servo pad 4 may be associated with a different number of pins 7. So each servo pad can be assigned a single bolt. But it is also possible to assign two or more bolts a cushion.
  • the operating medium of the servo unit is in this case a liquid. It could also be a pneumatic system.
  • FIG. 2 the servo unit is assigned to the plunger 3. Only pump 5 is indicated.
  • the servo unit is structurally integrated in the press table or in the ram.
  • the servo unit is in FIG. 3 shown in more detail, again schematically. It is integrated in a stamp 8. Instead of the punch, the servo unit could also be integrated into a die.
  • Each servo unit 4 acts on two bolts 7.
  • Each servo chamber 4 is acted upon by a servo pump 5, which is driven by a servo motor. 6
  • each servo unit 4 can be assigned its own servo motor pump set. But it can also be applied to a plurality of servo units 4 by a single servo motor pump set. In this case, a control valve (not shown here) is connected in front of each servo unit 4.
  • control of the press or of the forming process will be linked to the control of the servo unit or units.
  • the drawing device shown comprises a punch 8 and a sheet holder 9.
  • the punch 8 is of slightly conical shape. It has a bottom mold surface 8.1 and a wall mold surface 8.2.
  • the in the FIGS. 1 to 3 illustrated thought, including servo unit and bolt, is in FIG. 4 not shown. However, it should be understood that the thought of the pulling device according to FIG. 4 is realized.
  • Stamp 8 is surrounded by the sheet holder 9.
  • Sheet metal holder 9 has a support surface 9.1.
  • Sheet holder 9 is annular.
  • an inner die 10 It is at least approximately cylindrical. It is surrounded by an outer die 11. This is ring-shaped.
  • the inner die 10 in turn has a bottom mold surface 10.1.
  • the outer die 11 is annular. It has a wall molding surface 11.1, further a clamping surface 11.2 for clamping the drawing edge 12.3 of a workpiece 12 on the support surface 9.1 of the sheet holder 9.
  • the workpiece 12 has emerged from a circular disk-shaped board. It comprises a bottom 12.1, a wall 12.2 and the said drawing edge 12.3.
  • the clamping surface 11.2 of the outer die 11 is located approximately at the height of the bottom mold surface 10.1 of the inner die 10. At about the same height or higher is the support surface 9.1 of the sheet holder 9, sufficient for insertion of the workpiece 12th
  • a workpiece 12 is inserted into the pulling device and clamped between the support surface 9.1 and the clamping surface 11.2.
  • the inner die 10 and the outer die 11 move together with the preformed workpiece 12, as well as with the sheet holder 9 down.
  • the said parts (inner die 10, outer die 11, plate holder 9 and preformed workpiece) have the same speed.
  • the outer die 11 overtakes the inner die 10.
  • FIG. 4 The drawing apparatus shown is only one station of a series of drawing stations. These are not shown here. In practice, they are connected in series in a workshop.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Control Of Presses (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
EP14777300.6A 2013-09-30 2014-09-26 Vorrichtung zum umformen eines werkstückes aus blech Active EP3052257B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SI201430352T SI3052257T1 (sl) 2013-09-30 2014-09-26 Naprava za preoblikovanje oblikovanca izdelanega iz pločevine
PL14777300T PL3052257T3 (pl) 2013-09-30 2014-09-26 Urządzenie do obróbki plastycznej przedmiotu obrabianego z blachy
HRP20171358TT HRP20171358T1 (hr) 2013-09-30 2014-09-26 Uređaj za oblikovanje obratka izrađenog od lima

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013219819.1A DE102013219819A1 (de) 2013-09-30 2013-09-30 Vorrichtung zum Umformen eines Werkstückes aus Blech
PCT/EP2014/070641 WO2015044363A1 (de) 2013-09-30 2014-09-26 Vorrichtung zum umformen eines werkstückes aus blech

Publications (2)

Publication Number Publication Date
EP3052257A1 EP3052257A1 (de) 2016-08-10
EP3052257B1 true EP3052257B1 (de) 2017-08-16

Family

ID=51628119

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14777300.6A Active EP3052257B1 (de) 2013-09-30 2014-09-26 Vorrichtung zum umformen eines werkstückes aus blech

Country Status (20)

Country Link
US (1) US11833565B2 (pl)
EP (1) EP3052257B1 (pl)
JP (1) JP6170633B2 (pl)
KR (1) KR101842812B1 (pl)
CN (1) CN105899307B (pl)
BR (1) BR112016006959B1 (pl)
CA (1) CA2921109C (pl)
DE (1) DE102013219819A1 (pl)
DK (1) DK3052257T3 (pl)
ES (1) ES2641219T3 (pl)
HR (1) HRP20171358T1 (pl)
HU (1) HUE034049T2 (pl)
LT (1) LT3052257T (pl)
MX (1) MX374449B (pl)
PL (1) PL3052257T3 (pl)
PT (1) PT3052257T (pl)
RU (1) RU2016111901A (pl)
SI (1) SI3052257T1 (pl)
WO (1) WO2015044363A1 (pl)
ZA (1) ZA201600930B (pl)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109848275A (zh) * 2019-04-09 2019-06-07 马鞍山瑞恒精密制造有限公司 金属铁壳拉伸、冲压自动化生产装置

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US2294451A (en) * 1940-03-29 1942-09-01 Hydraulic Dev Corp Inc Blank holder and die cushion cylinder having separate adjustable pressures
FR2270026B1 (pl) * 1974-05-06 1981-10-09 Metal Box Co Ltd
CH621271A5 (pl) 1977-06-15 1981-01-30 Aluminiumwerke Ag Rorschach
DE3022844A1 (de) * 1980-06-19 1982-01-07 Uniplanung Metall- und Kunststoffengineering GmbH & Co KG, 7552 Durmersheim Einrichtung an werkzeugen oder pressen zum ziehen von blechformteilen
JPS5776998U (pl) * 1980-10-22 1982-05-12
JPS584230U (ja) * 1981-06-30 1983-01-12 株式会社東芝 金型装置
JPS584230A (ja) 1981-06-30 1983-01-11 日本電気ホームエレクトロニクス株式会社 温度ヒユ−ズ
GB2127336B (en) * 1982-08-30 1986-04-03 Amada Co Ltd Improvements in or relating to presses
JPH02205210A (ja) * 1989-02-03 1990-08-15 Akebono Brake Ind Co Ltd 絞りプレス型
DE4008377A1 (de) * 1990-03-15 1991-09-19 Dieffenbacher Gmbh Maschf Hydroelastische tiefzieheinrichtung
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US5299444A (en) * 1991-09-04 1994-04-05 Toyota Jidosha Kabushiki Kaisha Hydraulic cushioning system for press, having hydraulic power supply including means for adjusting initial pressure to be applied to pressure-pin cylinders
US5457980A (en) * 1992-11-05 1995-10-17 Toyota Jidosha Kabushiki Kaisha Method and device for controlling, checking or optimizing pressure of cushion pin cylinders of press by discharging fluid or initial pressure
JP2776196B2 (ja) * 1993-04-28 1998-07-16 トヨタ自動車株式会社 均圧クッション装置の均圧診断方法および装置
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
AU681982B2 (en) * 1995-02-10 1997-09-11 Ogihara America Corporation Stretch controlled forming mechanism and method for forming multiple guage welded blanks
DE19711780A1 (de) * 1997-03-21 1998-09-24 Schuler Pressen Gmbh & Co Zieheinrichtung für Ziehpressen
US6014883A (en) * 1998-06-08 2000-01-18 Can Industry Products, Inc. Apparatus and method for forming cup-shaped members
DE10254103B3 (de) 2002-11-20 2004-04-15 H&P Systec Gmbh Tiefziehwerkzeug und Verfahren zum Tiefziehen von Formteilen
DE102005026818B4 (de) 2004-06-24 2007-05-31 Müller Weingarten AG Ziehkissenvorrichtung mit NC-Antrieben
US7237423B1 (en) * 2004-11-12 2007-07-03 Miller Tool And Die Company Inc. Apparatus for stretch forming blanks
CA2586049C (en) * 2004-11-24 2011-03-29 Honda Motor Co., Ltd. Draw forming method and device
DE102006010648A1 (de) * 2005-03-07 2006-09-14 Müller Weingarten AG Ziehkissen-Vorrichtung mit NC-Antrieb und hydraulischem Polster
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Also Published As

Publication number Publication date
BR112016006959B1 (pt) 2022-07-26
CA2921109C (en) 2019-07-30
LT3052257T (lt) 2017-09-25
MX374449B (es) 2025-03-06
EP3052257A1 (de) 2016-08-10
WO2015044363A1 (de) 2015-04-02
US11833565B2 (en) 2023-12-05
ES2641219T3 (es) 2017-11-08
MX2016003487A (es) 2016-07-06
PT3052257T (pt) 2017-10-02
CA2921109A1 (en) 2015-04-02
DE102013219819A1 (de) 2015-04-02
JP6170633B2 (ja) 2017-07-26
RU2016111901A (ru) 2017-11-10
HUE034049T2 (hu) 2018-01-29
ZA201600930B (en) 2017-03-29
CN105899307B (zh) 2018-01-02
HRP20171358T1 (hr) 2017-11-03
JP2016532563A (ja) 2016-10-20
DK3052257T3 (da) 2017-09-25
CN105899307A (zh) 2016-08-24
PL3052257T3 (pl) 2018-02-28
US20160207093A1 (en) 2016-07-21
KR101842812B1 (ko) 2018-03-27
KR20160064190A (ko) 2016-06-07
SI3052257T1 (sl) 2017-10-30
BR112016006959A2 (pt) 2017-08-01

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