EP0760266A2 - Matrice d'emboutissage avec un revêtement de surface échangeable - Google Patents

Matrice d'emboutissage avec un revêtement de surface échangeable Download PDF

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Publication number
EP0760266A2
EP0760266A2 EP96112182A EP96112182A EP0760266A2 EP 0760266 A2 EP0760266 A2 EP 0760266A2 EP 96112182 A EP96112182 A EP 96112182A EP 96112182 A EP96112182 A EP 96112182A EP 0760266 A2 EP0760266 A2 EP 0760266A2
Authority
EP
European Patent Office
Prior art keywords
deep
mold half
shell
molded shell
carrier
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.)
Withdrawn
Application number
EP96112182A
Other languages
German (de)
English (en)
Inventor
Frank Dr. Ebert
Dieter Vogel
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP0760266A2 publication Critical patent/EP0760266A2/fr
Withdrawn legal-status Critical Current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
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/20—Making tools by operations not covered by a single other subclass

Definitions

  • the invention relates to a deep-drawing tool with a carrier mold half and with a thin-walled mold shell inserted therein, which is interchangeable, the carrier mold half having a negative shape corresponding to the sheet metal parts to be produced by deep-drawing, taking into account the mold shell thickness.
  • a deep-drawing tool forms at least the internal state of the art.
  • Deep-drawing tools whose tool surface is coated, for example by PVD, are used in particular for deep-drawing aluminum sheet metal parts.
  • the coating is optimized so that a high surface quality of the deep-drawn sheet metal parts is achieved over a long tool life.
  • the edge areas in the negative form of the deep-drawing tool are particularly stressed by the so-called friction welding.
  • Thermoforming tools require a new coating, which is extremely expensive, especially for large tools.
  • a remedial measure would be to insert an exchangeable molded shell into the so-called carrier mold half of the deep-drawing tool instead of the coating.
  • This molded shell could be relatively thin-walled and fully rest on the negative mold provided in the carrier mold half, taking into account the molded shell thickness, which essentially corresponds to the sheet metal parts to be produced by deep drawing. In the event of wear, this molded shell could then simply be replaced.
  • the object of the invention is therefore to demonstrate on a deep-drawing tool according to the preamble of claim 1 measures by means of which the requirements just mentioned are met.
  • the molded shell is fastened to the support mold half with a plurality of releasable connecting elements which engage at its edge region.
  • the connecting elements can be designed as bolts welded to the molded shell, which can be inserted into adapted receptacles in the carrier mold half and screwed to the latter.
  • a solution to the further object of demonstrating an advantageous manufacturing method for a molded shell of a deep-drawing tool according to the preamble of claim 1 is specified in the third claim and consists in that two sheets are deep-drawn one above the other in the carrier mold half without an inserted molded shell with the cooperation of the corresponding counter-mold half which one gives the molded shell and the other the sheet metal part to be produced in the deep-drawing tool.
  • Reference number 1 denotes a carrier mold half of a deep-drawing tool which has a negative mold 2 which corresponds essentially to the sheet metal parts to be produced by deep-drawing.
  • a thin-walled molded shell 3 is placed on the tool surface in the area of the negative mold 2 and beyond and overlapping this area.
  • the negative mold 2 of the carrier mold half 1 is also designed with regard to the inserted mold shell 3, ie when dimensioning this negative mold 2, it is taken into account that the fragmentary representation, to be produced using this carrier mold half 1 by deep drawing Sheet metal part 5 does not rest directly on the carrier mold half 1, but on the mold shell 3.
  • the molded shell 3 For a successful deep-drawing process of the sheet metal part 5, the molded shell 3 must on the one hand be securely fastened to the carrier mold half 1, on the other hand, it is desirable to be able to easily replace the molded shell 3.
  • a plurality of connecting elements 6 which engage on the edge region 4 of the molded shell 3 and are detachably fastened either to the molded shell 3 or to the carrier mold half 1.
  • This bolt 6a is inserted into an adapted receptacle 6b in the carrier mold half 1 and has a through hole which makes it possible to screw this bolt 6a onto the carrier mold half 1 by means of a screw 6c.
  • the bolt 6a or the plurality of bolts 6a or connecting elements 6 arranged on the circumference of the molded shell 3 not only serve to fasten the molded shell 3 to the carrier mold half 1, but at the same time ensure their exact positioning.
  • the molded shell 3 can be removed from the carrier mold half 1 and exchanged for a new molded shell 3, which can then also be reinserted into the negative mold 2 with its connecting elements 6.
  • This exchange of molded shells 3 can be carried out not only when a molded shell 3 shows relatively high signs of wear, but also when different tool surfaces are required for special deep-drawing processes.
  • different molded shells made of different materials can be used. It is also possible to provide molded shells 3 of different thicknesses, whereby sheet metal parts 5 of different thicknesses of essentially the same shape can be shaped, ie deep-drawn, in the shown carrier mold half 1 or the corresponding deep-drawing tool.
  • the exemplary embodiment described shows a carrier mold half in the form of a die, a correspondingly adapted upper mold / patrix being of course required to form the sheet metal part 5.
  • the upper part of the tool i. H. the patrix can be provided with a corresponding molded shell, but it is also possible to provide a conventional mold half without a molded shell for the upper part of the tool.
  • the counter-mold half should also have a molded shell, three sheets can be formed one above the other in a single deep-drawing process, the lower sheet metal part being the molded shell of the lower mold half, the upper sheet metal part being the molded shell of the upper mold half, and the middle sheet being actually deep-drawn Sheet metal part 5 results.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
EP96112182A 1995-09-01 1996-07-27 Matrice d'emboutissage avec un revêtement de surface échangeable Withdrawn EP0760266A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1995132375 DE19532375C2 (de) 1995-09-01 1995-09-01 Tiefziehwerkzeug mit einer austauschbaren Formschale
DE19532375 1995-09-01

Publications (1)

Publication Number Publication Date
EP0760266A2 true EP0760266A2 (fr) 1997-03-05

Family

ID=7771074

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96112182A Withdrawn EP0760266A2 (fr) 1995-09-01 1996-07-27 Matrice d'emboutissage avec un revêtement de surface échangeable

Country Status (2)

Country Link
EP (1) EP0760266A2 (fr)
DE (1) DE19532375C2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19807404A1 (de) * 1998-02-21 1999-08-26 Hortig Tief- und Streckziehwerkzeug mit durch konturgetreu geformte Masken abgedeckten Funktionsflächen und Verfahren zu seiner Herstellung
DE102005041460A1 (de) * 2005-08-31 2007-03-01 Daimlerchrysler Ag Umformwerkzeugsystem und Verfahren zu seiner Herstellung
DE102008016118A1 (de) * 2008-03-19 2009-09-24 Volkswagen Ag Vorrichtung und Verfahren zur Herstellung von Formbauteilen in Fertigungsverfahren
DE102009058657A1 (de) * 2009-12-16 2011-06-22 Benteler Automobiltechnik GmbH, 33102 Verfahren zur Herstellung eines Warmformwerkzeugs und Warmformwerkzeug mit Verschleißschutz
DE102015213485B4 (de) 2015-07-17 2022-04-28 Bayerische Motoren Werke Aktiengesellschaft Pressenwerkzeug mit einer Formschale für die Umformung von Tailored Blanks und Verfahren zur Herstellung einer Formschale

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3041989A (en) * 1959-06-04 1962-07-03 Lawrence S Tanner Die with plastic liner
DE1279623B (de) * 1965-01-08 1968-10-10 Paul Ensio Leskinen Matrize aus Kunststoff
GB1084625A (en) * 1966-02-16 1967-09-27 Ford Motor Co Method of making a set of die facings for metal pressing operations

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Also Published As

Publication number Publication date
DE19532375A1 (de) 1997-03-06
DE19532375C2 (de) 1999-04-01

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