EP1055465A2 - Procédé et appareil pour l'emboutissage profond de tôles - Google Patents

Procédé et appareil pour l'emboutissage profond de tôles Download PDF

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Publication number
EP1055465A2
EP1055465A2 EP00110779A EP00110779A EP1055465A2 EP 1055465 A2 EP1055465 A2 EP 1055465A2 EP 00110779 A EP00110779 A EP 00110779A EP 00110779 A EP00110779 A EP 00110779A EP 1055465 A2 EP1055465 A2 EP 1055465A2
Authority
EP
European Patent Office
Prior art keywords
sheet metal
deep drawing
deep
metal parts
softening
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
EP00110779A
Other languages
German (de)
English (en)
Other versions
EP1055465B1 (fr
EP1055465A3 (fr
Inventor
Gerhardt Dipl.-Ing. Söllner
Peter Dr. Von Czarnowski
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.)
Hydro Aluminium Deutschland GmbH
Original Assignee
Vereinigte Aluminium Werke AG
Vaw Aluminium 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 Vereinigte Aluminium Werke AG, Vaw Aluminium AG filed Critical Vereinigte Aluminium Werke AG
Publication of EP1055465A2 publication Critical patent/EP1055465A2/fr
Publication of EP1055465A3 publication Critical patent/EP1055465A3/fr
Application granted granted Critical
Publication of EP1055465B1 publication Critical patent/EP1055465B1/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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • 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
    • B21D24/16—Additional equipment in association with the tools, e.g. for shearing, for trimming

Definitions

  • the invention relates to a method and a device for deep drawing sheet metal parts, in which the Sheet metal parts in at least one deep drawing in one Be subjected to deep drawing press.
  • the Invention based on the object, a method or a Device for deep drawing sheet metal parts for To provide with the unwanted Strain hardening during deep drawing without Interruption of the forming process can be avoided.
  • Softening annealing in the deep-drawing press can be done at one single-stage deep-drawing process during the actual Deep drawing or in a step press especially can be realized simply by the fact that with multi-stage Deep drawing in a step press, the sheet metal parts in one Empty stage to be softened.
  • the Softening annealing in an empty stage can be Functionality of the drawing tool from the one Disconnect heater for softening anneal.
  • the method according to the invention is particularly advantageously designed in that the beam energy of a laser beam is used for the softening annealing.
  • the sheet metal part is annealed locally, for example in an empty stage of a stage press.
  • the laser light can be guided relatively easily to the desired areas of the sheet metal parts via optical waveguides and enables an optimal softening annealing process, since very high energy densities and thus very high heating rates can be guaranteed and since good spatial and temporal controllability of the laser beam is possible, so that a local narrowly limited heating of the sheet metal part is achieved.
  • the Nd: YAG laser and the CO 2 laser (CO 2 lasers are not suitable for use in connection with optical fibers) are to be mentioned here as particularly suitable laser types.
  • the integration of the laser beam via an optical waveguide into an empty stage of the tool set of a stage press represents a process-reliable procedure and thus allows economical production with the described improvement in formability by softening the material at critical points during the production process from the coil to the finished sheet metal part.
  • the sheet metal part by the beam energy annealing annealing is variable in time and space, can be optimally adapted to the respective sheet metal part Create a customized softening profile.
  • the laser beam is either scattered more or over moves the area to be softened.
  • the method according to the invention is performed using a laser characterized in that the sheet metal part for Softening annealing locally heated inductively becomes.
  • An induction coil is easy to manufacture and for example in a drawing tool Integrate deep drawing press.
  • When using a Induction coil for softening annealing is usually a shield against the deep drawing press and others Parts of a possibly used tool set necessary to avoid losses of induction power or Loads on the materials of the press or the To reduce or avoid the tool set.
  • the method according to the invention thereby advantageous designed that for the softening annealing by Heat conduction from a heated drawing tool on the Sheet metal part passing heat is used.
  • This Design of the method according to the invention enables the simple realization of softening annealing also in single-stage deep drawing.
  • Such a device is suitable in particular for use in an inventive Procedure with the possible described above Configurations and ensures the already in Advantages described in connection with the methods Deep drawing of sheet metal parts.
  • the is particularly advantageous Device according to the invention in that an empty stage Tool set for multi-stage deep drawing in at least one blank level at least one Has heating device.
  • the integration of the Heating device in an empty stage of a tool set multi-stage deep drawing enables decoupling of the Thermoforming and heating devices.
  • the embodiment shown in Fig. 1 Device for deep drawing sheet metal parts has one first die 1, a hold-down 2 and a first Stamp 3 to carry out the first deep drawing.
  • first deep draft will not be in one lead frame shown also not shown webs held sheet 10 from the first Stamp 3 pulled into the first die 1.
  • a tape in a punch in which the Sheets 10 are punched out of the band. Are there between the sheets 10 and the remaining lead frame Bars provided to the sheets 10 for further Processing, usually until the completion of the Deep drawing, better through the different deep drawing levels to be able to transport.
  • the first deep drawing shown in FIG. 1 occurs for sheets that tend to work harden Metals, such as aluminum, are too Strain hardening, especially in the areas of Sheets 10 near the edge and the transitions to Bottom of the first die 1.
  • the strengthened for work hardening regions 5 with the aid of a laser 6 softening annealed.
  • the laser 6 or optical fiber connected to a laser on the Areas 5 directed around there in terms of location and time limited to bring so much heat into the sheet metal part, that a softening anneal takes place.
  • the Lasers 6 are successively aimed at the areas 5 or several lasers can also be provided a parallel softening anneal another Prevent deep drawing or aggravate Ensure work-hardened areas 5 at the same time.
  • the deep drawing is rotationally symmetrical, so that the softening annealing advantageously by rotating the laser 6 with respect to a rotation axis 7.
  • the laser 6 sweeps over the work-hardened areas 5 evenly.
  • Guaranteed compared to the first stage of deep drawing the second stage is a reduction in the bending radii of the Sheets 10 at the top (R2 ⁇ R1) and at the transition to Bottom (r2 ⁇ r1).
  • the mean diameter decreased (D2 ⁇ D1). So they'll be the first Deep drawing strongly deformed, i.e. also work hardened Areas 5 strongly deformed again. This is only possible if the affected areas 5 before the second stage have been annealed.
  • the same work-hardened areas with radii r1 or r2 are not selectively annealed as this existing work hardening during the second deep drawing is advantageous.
  • one Device according to the invention for deep drawing Sheet metal parts as can be easily seen, the passage through an oven for the purpose of Release annealing to prepare others Deep draft levels.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
EP00110779A 1999-05-21 2000-05-20 Procédé et appareil pour l'emboutissage profond de tôles Expired - Lifetime EP1055465B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19923540A DE19923540A1 (de) 1999-05-21 1999-05-21 Verfahren und Vorrichtung zum Tiefziehen von Blechformteilen
DE19923540 1999-05-21

Publications (3)

Publication Number Publication Date
EP1055465A2 true EP1055465A2 (fr) 2000-11-29
EP1055465A3 EP1055465A3 (fr) 2001-04-18
EP1055465B1 EP1055465B1 (fr) 2002-12-18

Family

ID=7908871

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00110779A Expired - Lifetime EP1055465B1 (fr) 1999-05-21 2000-05-20 Procédé et appareil pour l'emboutissage profond de tôles

Country Status (3)

Country Link
EP (1) EP1055465B1 (fr)
DE (2) DE19923540A1 (fr)
ES (1) ES2188446T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004062896A1 (de) * 2004-11-12 2006-05-24 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zum formschlüssigen Verbinden von Werkstücken
EP2524761A1 (fr) * 2011-05-16 2012-11-21 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Outil de traitement avec au moins deux stations de travail

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010016841B3 (de) * 2010-05-07 2011-11-17 Otto Vollmann Gmbh & Co. Kg Verfahren zur Herstellung einer Buchse sowie Buchse aus tiefziehfähigem Stahlband
US9067251B2 (en) 2011-06-13 2015-06-30 GM Global Technology Operations LLC Method of forming an article from metal alloy sheet material

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2332287A1 (de) * 1973-06-25 1975-01-16 Wmf Wuerttemberg Metallwaren Verfahren und vorrichtung zur verbesserung des tiefziehverhaltens
FR2692504A1 (fr) * 1992-06-17 1993-12-24 Lorraine Laminage Procédé et dispositif de formage à tiède d'un flan de tôle en acier.
EP0916427A1 (fr) * 1997-03-04 1999-05-19 Institute Of Technology Precision Electrical Discharge Works Machine d'emboutissage profond progressif

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2332287A1 (de) * 1973-06-25 1975-01-16 Wmf Wuerttemberg Metallwaren Verfahren und vorrichtung zur verbesserung des tiefziehverhaltens
FR2692504A1 (fr) * 1992-06-17 1993-12-24 Lorraine Laminage Procédé et dispositif de formage à tiède d'un flan de tôle en acier.
EP0916427A1 (fr) * 1997-03-04 1999-05-19 Institute Of Technology Precision Electrical Discharge Works Machine d'emboutissage profond progressif

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004062896A1 (de) * 2004-11-12 2006-05-24 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zum formschlüssigen Verbinden von Werkstücken
DE102004062896B4 (de) * 2004-11-12 2006-09-07 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zum formschlüssigen Verbinden von Werkstücken
EP2524761A1 (fr) * 2011-05-16 2012-11-21 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Outil de traitement avec au moins deux stations de travail
DE102011050383A1 (de) * 2011-05-16 2012-11-22 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Bearbeitungswerkzeug mit mindestens zwei Arbeitsstationen
DE102011050383B4 (de) * 2011-05-16 2017-04-13 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Bearbeitungswerkzeug mit mindestens zwei Arbeitsstationen

Also Published As

Publication number Publication date
EP1055465B1 (fr) 2002-12-18
DE50000953D1 (de) 2003-01-30
EP1055465A3 (fr) 2001-04-18
DE19923540A1 (de) 2000-12-07
ES2188446T3 (es) 2003-07-01

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