EP3052257A1 - Dispositif pour le formage d'une pièce en tôle - Google Patents

Dispositif pour le formage d'une pièce en tôle

Info

Publication number
EP3052257A1
EP3052257A1 EP14777300.6A EP14777300A EP3052257A1 EP 3052257 A1 EP3052257 A1 EP 3052257A1 EP 14777300 A EP14777300 A EP 14777300A EP 3052257 A1 EP3052257 A1 EP 3052257A1
Authority
EP
European Patent Office
Prior art keywords
servo
press
die
workpiece
sheet metal
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
EP14777300.6A
Other languages
German (de)
English (en)
Other versions
EP3052257B1 (fr
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
Publication of EP3052257A1 publication Critical patent/EP3052257A1/fr
Application granted granted Critical
Publication of EP3052257B1 publication Critical patent/EP3052257B1/fr
Priority to HRP20171358TT priority patent/HRP20171358T1/hr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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.
  • Machining a workpiece can include any operation
  • 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 many, especially in the automotive industry
  • DE 102 54 103 B3 describes a deep drawing 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.
  • DE 27 27 174 C2 describes a method and a device 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.
  • Sheet thickness course during deep drawing of hollow bodies It is about a multiple buckling (deforming) and/wölben (reforming) of a
  • WO 2006/000187 A1 describes a forming press for regulating a
  • 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 a method for forming a sheet metal blank. However, the system shown operates without pneumatic or hydraulic cushions or pressure bolts.
  • the invention has for its object to make a device, a system, a method and a workpiece such that high-strength steels
  • Tool part directly that is without the interposition of functional parts. Parts that serve only to transmit the forces, such as the bolts, can be used. However, an indirect action is possible.
  • the device is designed such that the inner die and the outer die during the
  • Forming process can be moved at different speeds in the drawing direction.
  • the inner die and the outer die - optionally together with the blank holder - each assigned a special drive, which these two during the forming process
  • the servo unit moves at a higher speed than the plunger of the press in the pulling direction, thus in the direction of the plunger Units are provided over the
  • Distribution area of the press distributed 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. It can be arranged on or in a floating plate, this is a plate that distributes the pressing force on a surface.
  • Variotempo units can also be retrofitted to existing press systems.
  • the invention is explained in more detail with reference to the drawing. It details the following:
  • Figure 1 shows schematically a press with integrated servo unit.
  • the servo unit is assigned to the press table.
  • Figure 2 shows schematically a press with integrated servo unit.
  • the servo unit is assigned to the plunger of the press.
  • FIG. 3 shows a schematic representation of a servo unit.
  • Figure 4 shows a schematic representation and in elevation a
  • FIG. 5 shows the workpiece shortly before the end of the second forming phase.
  • FIG. 6 shows the workpiece at the end of the forming process.
  • FIGS 7 to 12 illustrate the forming process in six different
  • 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 from the relevant servo cushion 4
  • 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.
  • 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 shown in more detail in FIG. 3, 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 servomotor 6.
  • each servo unit 4 can have its own servomotor-pump set
  • the drawing device shown in Figure 4 comprises a punch 8 and a blank holder 9.
  • the punch 8 is of slightly conical shape. He has one
  • FIGS. 1 to 3 comprising the servo unit and the bolt, is not shown in FIG. However, it is understood that the thought at the
  • 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 disc-shaped board. It comprises a bottom 12.1, a wall 12.2 and the said drawing edge 12.3.
  • the puller works as follows: It is initially open, that is 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 In this phase, a workpiece 12 is inserted into the pulling device and clamped between the support surface 9.1 and the clamping surface 11.2. Now begins the actual work phase of the pulling device. In this case, 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. Note that this can also be the other way round.
  • the drawing apparatus shown in Figure 4 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.
  • the invention is particularly successful for large workpieces such as fenders. These can be subjected to different forming processes at different points, with correspondingly different material stresses. Are used multiple Variotempo units, over the entire
  • Distributed workpiece surface so it can be taken into account by the ratio of the speeds of inner die and outer die during the forming process is sized accordingly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Control Of Presses (AREA)

Abstract

L'invention concerne un dispositif pour le formage d'un flan en tôle, comprenant les caractéristiques suivantes: • - un châssis de presse présentant une table de presse (1), des colonnes verticales (2), une traverse, et un coulisseau de presse (3); • - un élément d'outil supérieur, comprenant une matrice extérieure et une matrice intérieure (11, 10), et un élément d'outil inférieur, comprenant un poinçon (8) et un serre-flan (9); • - au moins un dispositif d'entraînement qui est associé au moins à un des deux éléments d'outil. Le dispositif d'entraînement comprend • - une pluralité de boulons (7), qui sont disposés, coulissants verticalement, en direction du pressage, dans la table de presse (1) et/ou dans le coulisseau de presse (3) et qui agissent sur l'élément d'outil concerné; • - une pluralité de servocoussins pneumatiques ou hydrauliques (4) qui agissent, en direction du pressage, sur des boulons individuels ou sur des groupes de boulons (7); • - une servopompe (5) sollicitant les servocoussins (4), et qui est entraînée par un servomoteur.
EP14777300.6A 2013-09-30 2014-09-26 Dispositif pour le formage d'une pièce en tôle Active EP3052257B1 (fr)

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 2017-09-08 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 (fr) 2013-09-30 2014-09-26 Dispositif pour le formage d'une pièce en tôle

Publications (2)

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

Family

ID=51628119

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14777300.6A Active EP3052257B1 (fr) 2013-09-30 2014-09-26 Dispositif pour le formage d'une pièce en tôle

Country Status (20)

Country Link
US (1) US11833565B2 (fr)
EP (1) EP3052257B1 (fr)
JP (1) JP6170633B2 (fr)
KR (1) KR101842812B1 (fr)
CN (1) CN105899307B (fr)
BR (1) BR112016006959B1 (fr)
CA (1) CA2921109C (fr)
DE (1) DE102013219819A1 (fr)
DK (1) DK3052257T3 (fr)
ES (1) ES2641219T3 (fr)
HR (1) HRP20171358T1 (fr)
HU (1) HUE034049T2 (fr)
LT (1) LT3052257T (fr)
MX (1) MX2016003487A (fr)
PL (1) PL3052257T3 (fr)
PT (1) PT3052257T (fr)
RU (1) RU2016111901A (fr)
SI (1) SI3052257T1 (fr)
WO (1) WO2015044363A1 (fr)
ZA (1) ZA201600930B (fr)

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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FR2270026B1 (fr) * 1974-05-06 1981-10-09 Metal Box Co Ltd
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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 (fr) * 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
AU564379B2 (en) * 1982-08-30 1987-08-13 Amada Company Limited Press-bellow with pneumatic to hydraulic control
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
DE4112943A1 (de) * 1991-04-20 1992-10-22 Schuler Gmbh L Zieheinrichtung im pressentisch einer presse
DE69203679T2 (de) * 1991-09-04 1996-01-04 Toyota Motor Co Ltd Hydraulische Polsteranordnung für eine Presse mit verstellbarer hydraulischer Energieversorgung zum Einstellen des Anfangdruckes der Zylinder der Druckbolzen.
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
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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
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Also Published As

Publication number Publication date
MX2016003487A (es) 2016-07-06
EP3052257B1 (fr) 2017-08-16
CN105899307A (zh) 2016-08-24
HUE034049T2 (hu) 2018-01-29
US11833565B2 (en) 2023-12-05
RU2016111901A (ru) 2017-11-10
CA2921109A1 (fr) 2015-04-02
ES2641219T3 (es) 2017-11-08
KR20160064190A (ko) 2016-06-07
ZA201600930B (en) 2017-03-29
HRP20171358T1 (hr) 2017-11-03
KR101842812B1 (ko) 2018-03-27
SI3052257T1 (sl) 2017-10-30
CA2921109C (fr) 2019-07-30
BR112016006959A2 (pt) 2017-08-01
BR112016006959B1 (pt) 2022-07-26
DE102013219819A1 (de) 2015-04-02
PT3052257T (pt) 2017-10-02
WO2015044363A1 (fr) 2015-04-02
JP2016532563A (ja) 2016-10-20
US20160207093A1 (en) 2016-07-21
JP6170633B2 (ja) 2017-07-26
LT3052257T (lt) 2017-09-25
PL3052257T3 (pl) 2018-02-28
CN105899307B (zh) 2018-01-02
DK3052257T3 (da) 2017-09-25

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