EP1396297A1 - Dispositif et procédé d' emboutissage - Google Patents

Dispositif et procédé d' emboutissage Download PDF

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Publication number
EP1396297A1
EP1396297A1 EP02020094A EP02020094A EP1396297A1 EP 1396297 A1 EP1396297 A1 EP 1396297A1 EP 02020094 A EP02020094 A EP 02020094A EP 02020094 A EP02020094 A EP 02020094A EP 1396297 A1 EP1396297 A1 EP 1396297A1
Authority
EP
European Patent Office
Prior art keywords
deep
rod
acting
sheet
material flow
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
EP02020094A
Other languages
German (de)
English (en)
Other versions
EP1396297B1 (fr
Inventor
Carsten Greisert
Torsten Hallfeldt
Jürgen Wesemann
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.)
Ford Global Technologies LLC
Original Assignee
Ford Global Technologies LLC
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 Ford Global Technologies LLC filed Critical Ford Global Technologies LLC
Priority to DE50203897T priority Critical patent/DE50203897D1/de
Priority to EP20020020094 priority patent/EP1396297B1/fr
Publication of EP1396297A1 publication Critical patent/EP1396297A1/fr
Application granted granted Critical
Publication of EP1396297B1 publication Critical patent/EP1396297B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B21D24/10—Devices controlling or operating blank holders independently, or in conjunction with dies
    • 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
    • B21D22/22—Deep-drawing with devices for holding the edge of the blanks

Definitions

  • the invention relates to a deep-drawing device for deep-drawing metallic, sheet-like blanks or blanks, hereinafter called blanks, essentially comprising a stamp, a hold-down and a Deep-drawing mold, and comprising at least one on the metallic, sheet-like Circuit board acting, in particular individually adjustable, integrated in the stamp Drawbar.
  • the invention also relates to a method for deep drawing metallic, sheet-like boards, in which the board to be machined in one Thermoforming device via a hold-down device and a corresponding one Counter stop surface (die) of the deep-drawing mold, determined and depending on the drawing depth, clamped and via drawing rods acting on this board the deep-drawing process, to reduce the springing back of the board, in is essentially controlled.
  • Deep drawing devices and methods are known from the prior art known for deep drawing of metallic, sheet-like blanks.
  • the well-known Deep drawing devices and deep drawing processes are also used in manufacturing used by body elements. It is used in the deep drawing of blanks a high material strength (e.g. HSLA 340, DP600) or of boards with one compared to steel, the modulus of elasticity is lower (e.g. aluminum) Accuracy by springing back, springing back or springing open of the material or worsened by wrinkling. There are therefore drawing rods in the Hold-down device of the deep-drawing device or in the corresponding counter-stop surface The deep-drawing mold has been integrated to prevent it from jumping back and forming folds to reduce.
  • HSLA 340, DP600 high material strength
  • the modulus of elasticity e.g. aluminum
  • a deep-drawing device or a method is also known from US Pat. No. 6,276,185 B1 known for deep drawing, in which in the hold-down device of the deep-drawing device several drawing rods are provided to control the deep-drawing process.
  • the blanks to be machined become a two-stage deep-drawing process undergo, in which in the first step in particular machined the marginal areas and in the second step the deep-drawing process is completed, whereby here too different drawing depths over the length can be provided.
  • the deep-drawing tool comprises a punch, a die and a hold-down device, with the hold-down attached directly to the stamp and throughout Forming process is in contact with the sheet metal.
  • the hold-down can be designed and arranged differently, further additional, with elements that are operatively connected to the hold-down device, such as intermediate pieces, Brake elements or the like can be provided.
  • DE 195 04 649 C1 describes a method and a drawing tool for Stretch drawing of sheet metal is known, in which the drawing process in essentially two Phases is divided to a plastic also in the inner area of the sheets To enable deformation, given a uniform material thickness should.
  • the drawing process comprises a first phase in which the sheet metal is transverse to Direction of pull and the material of the areas remote from the edge is pulled out, as well as a second phase, in which the material near the edge is pulled out.
  • the object is achieved according to the deep-drawing device according to the invention in that the at least one acting on the metallic, sheet-like plate, especially individually adjustable drawing rod directly on the stamp of the deep-drawing device is arranged.
  • the at least one acting on the metallic, sheet-like plate, especially individually adjustable drawing rod directly on the stamp of the deep-drawing device is arranged.
  • the advantage of the arrangement according to the invention lies especially in the combination of a low inhibiting, the material flow controlling device at the beginning of the deep-drawing process in order to achieve a good formability with a significantly increased, the material flow inhibiting and reduced or preventing device at the end of the deep-drawing process Reduction or avoidance of a form deviation by springing back deep-drawn circuit board.
  • one or several individually adjustable drawing rods directly in or on the stamp of the Thermoforming device integrated or arranged.
  • the at least one on the metallic, sheet-like board acting drawing rod in each case located in a stamp of the deep-drawing device Pocket is arranged.
  • the Height of the at least one acting on the metallic, sheet-like board Pull rod is adjustable.
  • the present one is preferred Invention for the functional action of the at least one drawing rod the metallic, sheet-like plate an additional, acting on the drawing rod, Force resistance element provided. It is recommended that the Pull rod acting, additional force resistance element adjustable is.
  • the additional force resistance element acting on the drawing rod can expediently by a spring element, in particular a gas spring element, be educated.
  • an active hydraulic force control can be provided for the deep-drawing device.
  • the deep-drawing mold in be essentially flat.
  • the deep-drawing mold has the each pulling rod acting on an additional cavity.
  • the at least one drawing rod on its to hollow out the Thermoformed side facing a convex and the cavity itself one has a correspondingly shaped concave configuration.
  • Execution is provided that the at least one drawing rod on its Hollow out the deep-drawing mold facing a substantially rectangular and the excavation itself also has a corresponding rectangular shape Has configuration.
  • the at least one drawing rod each firmly on the stamp of the deep-drawing device bag located. It is recommended that the Height of the drawing rod fixed in the pocket on the stamp the pocket inserted intermediate plates are formed.
  • a movable insert on which a Force resistance element acts is a movable insert on which a Force resistance element acts. This can be due to the mobile use in force resistance element acting on the cavity of the deep-drawing mold is preferred be adjustable. This is preferred for mobile use acting force resistance element by spring elements, in particular by Gas spring elements, formed, can also be used for additional control of the active hydraulic power control can be provided for mobile use.
  • the object on which the invention is based becomes solved according to the invention in that at the beginning of the deep-drawing process Increase the formability of the board a little inhibitory Thermoforming control force is applied to the board that at a predetermined time of the deep-drawing process, the inhibitory, the deep-drawing process controlling force is significantly increased by attacking the drawing rods on the board and that in the final part of the deep-drawing process, the deep-drawing process Controlling force increased to minimize bouncing back of the board is maintained.
  • This is the first time in process engineering Regarded realizes that good formability of the deep-drawn sheet is achieved is and is still guaranteed that at the same time the geometric accuracy is not deteriorated by the material jumping back.
  • the one The advantage underlying the method according to the invention lies in particular in the type of variation of the deep-drawing process controlling the material flow.
  • Another method feature of the present invention is used expediently the material flow during the final part of the deep-drawing process controlling device at a predetermined position on the board, such that the material flow is significantly reduced until the end of the deep-drawing process or is inhibited.
  • the deep-drawing device is generally designated 10.
  • This Deep-drawing device 10 is used for deep-drawing metallic, sheet-like blanks, the deep-drawing device 10 in particular for the production of Body elements is used.
  • the deep-drawing device 10 includes essential, see e.g. B. Fig. 1 of the drawing, a stamp 12, a Hold-down 13 and a deep-drawing mold 14, and it further comprises at least one acting on the metallic, sheet-like board 11, preferably individually adjustable, pull rod 15.
  • the at least one on the metallic, sheet-like plate 11 acting, preferably individually adjustable Drawing rod 15 is arranged directly on the punch 12 of the deep-drawing device 10.
  • This arrangement ensures that the one arranged directly on the stamp 12 respective drawing rod 15 at a predetermined time during the Deep drawing process attacks on the board 11.
  • the advantage of the invention lies in particular in the combination of a low inhibitory effect Material flow controlling device at the beginning of the deep-drawing process Achieving good formability with a significantly increased material flow controlling device at the end of the deep-drawing process to reduce or Avoidance of the thermoformed plate 11 jumping back.
  • the deep-drawing device 10 shown in FIG. 1 of the drawing this is done a flat or preformed board 11 placed on the deep-drawing mold 14 and the Hold-down device 13 is closed.
  • the Hold-down 13 controlled by quill 23 on which the hold-down 13 is fixed is.
  • the deep-drawing mold 14 is arranged on a spacer 24, which in turn is on a press table 25, which is only schematically indicated here.
  • the Stamp 12 is located on a plunger designated 22, which e.g. one passes here schematically indicated double-acting press device. It is also an application of the arrangement according to the invention in other than that shown press arrangements, for. B. single-acting presses etc., intended.
  • FIG. 1 exactly two individually adjustable drawing rods 15 directly arranged on the punch 12 of the deep-drawing device 10.
  • the amount of drawing rod 15 acting on the metallic, sheet-like plate 11 is present adjustable in order to be able to change the position of the attack on the circuit board 11.
  • the shape of the drawing rod 15 can have any suitable geometry.
  • the deep-drawing mold is 14 formed essentially flat.
  • the deep-drawing mold 14 at the location of the respective drawing rod 15 in each case has an additional cavity 18.
  • the respective drawing rod 15 on its 18 to the cavity Thermoformed mold 14 facing a convex and the cavity 18 itself one have a corresponding concave configuration.
  • the respective drawing rod 15 on it to the cavity 18 of the deep-drawing mold 14 facing a substantially rectangular and the cavity 18 itself also a corresponding type have a rectangular configuration.
  • the drawing rod 15 is fixed in each case the stamp 12 of the deep-drawing device 10 located pocket 16.
  • the drawn rod 15 into the pocket 16 inserted intermediate plates are formed, this embodiment is in the Figures of the drawing are not shown.
  • an embodiment with or possible without pockets, where the drawing rods can be exchanged without Stamps are arranged or are integrated in the stamp.
  • the drawing is in the additional Cavity 18 of the deep-drawing mold 14 for more precise adjustment of the control of the Material flow a movable insert 20 is provided on the one Force resistance element 21 acts. That on this movable insert 20 acting force resistance element 21 is adjustable and is in the present case formed by spring elements, in particular by gas spring elements.
  • this movable insert 20 acting force resistance element 21 is adjustable and is in the present case formed by spring elements, in particular by gas spring elements.
  • other solutions can also be provided here.
  • an active for additional control of the movable insert 20 hydraulic power control can be provided.
  • the method according to the invention is now described below. This is characterized in that at the beginning of the deep-drawing process to increase the Formability of the circuit board 11 is a low inhibitory, controlling the material flow Device is applied to the board 11 at a predetermined rate
  • the time of the deep-drawing process that inhibits the material flow Device by gripping the drawing rods 15 on the board 11 is significantly increased and that in the final part of the deep-drawing process the material flow controlling device for minimizing a jumping back of the board 11 increased is maintained.
  • the drawing rods 15 do not touch the circuit board 11, see 1 and 3, at this time or in this phase, the circuit board 11 but already via the punch 12 into the recess 26 of the deep-drawing mold 14 drawn.
  • the material flow is controlled via the force on Hold-down device 13, via spacers between hold-down device and deep-drawing mold or optionally via additional drawing rods (not shown here) in the area of the hold-down device 13th
  • the deep-drawing mold 14 is flat educated.
  • the Thermoforming mold 14 has an additional cavity 18, different here Geometries with respect to the drawing rods 15 and selected according to the cavity 18 can be.
  • the material flow is through this training at the final Part of the deep-drawing process additionally inhibited. If here the drawing rods 15 attack the circuit board 11, the material in this cavity 18 of the deep-drawing mold 14 pulled, see Fig. 10.
  • the material flow is inhibited when the distance SDB Drawing rod 15 - cavity 18 is smaller than the original thickness S0 of the board 11, or reduced if the distance SDB drawing rod 15 - cavity 18 is equal to or is greater than the original thickness S0 of the circuit board 11. This also applies to the Embodiment according to FIG. 11.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
EP20020020094 2002-09-07 2002-09-07 Dispositif et procédé d' emboutissage Expired - Lifetime EP1396297B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE50203897T DE50203897D1 (de) 2002-09-07 2002-09-07 Tiefziehvorrichtung und Verfahren zum Tiefziehen
EP20020020094 EP1396297B1 (fr) 2002-09-07 2002-09-07 Dispositif et procédé d' emboutissage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20020020094 EP1396297B1 (fr) 2002-09-07 2002-09-07 Dispositif et procédé d' emboutissage

Publications (2)

Publication Number Publication Date
EP1396297A1 true EP1396297A1 (fr) 2004-03-10
EP1396297B1 EP1396297B1 (fr) 2005-08-10

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EP20020020094 Expired - Lifetime EP1396297B1 (fr) 2002-09-07 2002-09-07 Dispositif et procédé d' emboutissage

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EP (1) EP1396297B1 (fr)
DE (1) DE50203897D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006003268A1 (de) * 2006-01-24 2007-08-09 Ford Global Technologies, LLC, Dearborn Verfahren sowie Tiefziehvorrichtung zum Tiefziehen von Metallblechen
CN112654564A (zh) * 2018-11-02 2021-04-13 必达包装国际有限公司 金属箔容器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104043713A (zh) * 2014-06-26 2014-09-17 梧州恒声电子科技有限公司 一种双动压力机拉伸模具工艺

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2828431A1 (de) * 1978-06-08 1979-12-13 Aluminiumwerke Ag Rorschach Vorrichtung zum tiefziehen eines ziehteiles
JPS58157531A (ja) * 1982-03-16 1983-09-19 Nissan Motor Co Ltd プレス型
DE19504649C1 (de) * 1995-02-13 1996-08-22 Daimler Benz Ag Verfahren und Ziehwerkzeug zum Streckziehen von Blechen
US6276185B1 (en) * 1999-12-09 2001-08-21 General Motors Corporation Flow lock bead control apparatus and method for drawing high strength steel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2828431A1 (de) * 1978-06-08 1979-12-13 Aluminiumwerke Ag Rorschach Vorrichtung zum tiefziehen eines ziehteiles
JPS58157531A (ja) * 1982-03-16 1983-09-19 Nissan Motor Co Ltd プレス型
DE19504649C1 (de) * 1995-02-13 1996-08-22 Daimler Benz Ag Verfahren und Ziehwerkzeug zum Streckziehen von Blechen
US6276185B1 (en) * 1999-12-09 2001-08-21 General Motors Corporation Flow lock bead control apparatus and method for drawing high strength steel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 283 (M - 263) 16 December 1983 (1983-12-16) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006003268A1 (de) * 2006-01-24 2007-08-09 Ford Global Technologies, LLC, Dearborn Verfahren sowie Tiefziehvorrichtung zum Tiefziehen von Metallblechen
DE102006003268B4 (de) * 2006-01-24 2008-02-07 Ford Global Technologies, LLC, Dearborn Verfahren sowie Tiefziehvorrichtung zum Tiefziehen von Metallblechen
CN112654564A (zh) * 2018-11-02 2021-04-13 必达包装国际有限公司 金属箔容器
CN112654564B (zh) * 2018-11-02 2023-02-28 必达包装国际有限公司 金属箔容器

Also Published As

Publication number Publication date
DE50203897D1 (de) 2005-09-15
EP1396297B1 (fr) 2005-08-10

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