EP1147833A2 - Procédé et dispositif d'emboutissage de pièces en tôle - Google Patents

Procédé et dispositif d'emboutissage de pièces en tôle Download PDF

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Publication number
EP1147833A2
EP1147833A2 EP01107980A EP01107980A EP1147833A2 EP 1147833 A2 EP1147833 A2 EP 1147833A2 EP 01107980 A EP01107980 A EP 01107980A EP 01107980 A EP01107980 A EP 01107980A EP 1147833 A2 EP1147833 A2 EP 1147833A2
Authority
EP
European Patent Office
Prior art keywords
shaped
elements
contours
shaped elements
molded
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Withdrawn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
EP01107980A
Other languages
German (de)
English (en)
Other versions
EP1147833A3 (fr
Inventor
Ralf Dr. Kolleck
Bernd Dr. Engel
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.)
Schuler SMG GmbH and Co KG
Original Assignee
Schuler SMG 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 Schuler SMG GmbH and Co KG filed Critical Schuler SMG GmbH and Co KG
Publication of EP1147833A2 publication Critical patent/EP1147833A2/fr
Publication of EP1147833A3 publication Critical patent/EP1147833A3/fr
Withdrawn legal-status Critical Current

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    • 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
    • B21D22/205—Hydro-mechanical deep-drawing

Definitions

  • the invention relates to a method for deep drawing flat sheets to form parts arranged on the part bottom local shape contours with a small shape radius by the sheet metal clamped on the edge by means of a contour of the molded part against a fluid active medium is reshaped.
  • the invention further relates to a Device for performing the method.
  • Methods of the aforementioned type are also called hydromechanical Referred to as deep drawing.
  • active media have in oil emulsions. That from the hold-down sheet metal clamped against the lower tool becomes at the same time pressed against a seal and thereby the space below of the sheet sealed.
  • This space of the lower tool is then filled with the oil emulsion in which the necessary movement due to the movement of the stamp over the sheet Forming pressure builds up.
  • the sheet is molded onto the die. After reaching the final contour, the pressure in the lower tool dismantled and the molded part can be removed.
  • This deep-drawing process works with simple molded part contours inexpensive and compared to conventional deep-drawing technology with little tool wear with less Strain on sheet metal or molded part. Instructs the molding shape contours in its bottom, which is shaped against the active medium with tight radii, such as local depressions, beads, Cant or the like on the leading Face of the press ram formed as corresponding contours are required, especially towards the end of the forming process high pressures in the active medium and a corresponding high locking force to ensure pressure tightness.
  • the invention is based, the hydromechanical task To further develop thermoforming processes in such a way that Moldings with local shape contours with small shape radii with such a final pressure or hold-down force can be reshaped as for reshaping Moldings without such local shape contours are necessary.
  • Another object of the invention is to provide a Propose a suitable device to carry out the method.
  • the first task is a hydromechanical one Thermoforming process of the type mentioned at the outset, that the sheet in the area of the local shape contours against resiliently positioned in the active medium Solid-form elements is formed.
  • the method according to the invention largely uses the deformation work the advantages of the hydromechanical Deep drawing. Wherever this process has high media pressures and therefore requires a large locking force, namely when reshaping local shape contours with small shape radii the method according to the invention works with a kind of embossing process, in which these shape contours by molding resiliently shaped elements are formed.
  • the shaped elements in the Active medium positioned so that the sheet by the movement of the die at the end of the forming process in the area the local shape contours are shaped by means of the shape elements becomes.
  • molded elements are made from an elastically deformable Material used, the deformation work on the shaped elements for forming the sheet worries.
  • the elastically deformable material used should also be highly wear-resistant. Form elements are preferred made of a cast polyurethane resin.
  • the invention is based on a device with a a press frame guided die with the contour of the molded part bottom, a container-shaped lower tool with inlet and outlet for the active medium and one that Plate holding clamp on the edge.
  • a device with a a press frame guided die with the contour of the molded part bottom, a container-shaped lower tool with inlet and outlet for the active medium and one that Plate holding clamp on the edge.
  • the device is characterized in that in the lower tool with respect to the local shape contours small form radius on the press ram solid form elements are positioned that are resilient and flexible in one are arranged such that the ram with the Sheet metal towards the end of the forming process on the form elements accumulates.
  • the solid form elements are corresponding in the lower tool the arrangement of the local form contours on the form stamp positioned. They are arranged at such a height that they are towards the end of the forming movement of the die take effect by pressing the stamp against the sheet the form elements tarnish and give way elastically, however only to such an extent that the sheet metal on the local Shape contours is embossed. While the hydromechanical Deep drawing for such shape contours up to 1500 bar must be generated in the invention trained device the active media pressure remain limited to approx. 100 bar. That way you can large workpieces with small form radii Shaped devices with relatively low locking force become. Radii can also be molded in, not with conventional hydromechanical forming are more malleable.
  • the Form elements set in their relative position to the form stamp be what is preferably hydraulic Actuators happen.
  • the hydraulic Actuators may have a higher pressure than the active media pressure are applied.
  • the shaped elements preferably consist of an elastic deformable and wear-resistant material, whereby polyurethane casting resin has proven to be particularly advantageous Has.
  • the shaped elements do not need any on their active surface have a special shape, rather forms this by elastic change in shape when the die is started with the sheet against the form elements by itself out.
  • the shaped elements are preferably interchangeable in the lower tool arranged to replace them when worn can.
  • the lower tool supports according to the local shape contours positioned on the die and the elastic molded elements are interchangeably attached.
  • the supports can be rigid or as hydraulic actuators, e.g. as a hydraulic cylinder, be formed by means of which the shaped elements are deliverable to the form stamp.
  • the drawing shows only a schematic representation of the Connection with the invention essential components of a hydromechanical press. It has one as the upper tool Press die 1 on the in the guides, not shown Press frame is vertically raised and lowered and its in essential vertical peripheral surface 3 in connection with the leading end face 4 the inner contour of the to be manufactured Determined molding.
  • the press also instructs Lower tool 5, which is essentially container-shaped is formed and with an inlet 6 and outlets 7 for a hydraulic active medium, e.g. an oil emulsion is.
  • the press has a hold-down 8 on, against the upper edge 9 of the lower tool 5 is deliverable, in which a sealing device 10, e.g. a circumferential ring seal is arranged.
  • the press ram 1 has on its leading end face 4 a molding surface which depicts the bottom of the molded part, the in the exemplary embodiment shown, local shape contours 11, 12 and 13 in the form of depressions with small radii contains.
  • shaped elements 15, 16 and 17 are resilient. They exist in the embodiment shown, depending on the course of the local Shape contours from strip or cone-shaped bodies made of an elastically deformable material, like Fig.1 and 2 show, on their active surface facing the die have no special contouring.
  • the form elements 15, 16 and 17 are each on a rigid support 18th or exchangeable on the movable link of a hydraulic cylinder fixed. For example, they consist of shaped bodies made of a PU cast resin.

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)
EP01107980A 2000-04-20 2001-03-29 Procédé et dispositif d'emboutissage de pièces en tôle Withdrawn EP1147833A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10019685 2000-04-20
DE2000119685 DE10019685A1 (de) 2000-04-20 2000-04-20 Verfahren zum Tiefziehen von Blechen und Vorrichtung zur Durchführung des Verfahrens

Publications (2)

Publication Number Publication Date
EP1147833A2 true EP1147833A2 (fr) 2001-10-24
EP1147833A3 EP1147833A3 (fr) 2003-01-15

Family

ID=7639514

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01107980A Withdrawn EP1147833A3 (fr) 2000-04-20 2001-03-29 Procédé et dispositif d'emboutissage de pièces en tôle

Country Status (2)

Country Link
EP (1) EP1147833A3 (fr)
DE (1) DE10019685A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006048302A1 (fr) * 2004-11-08 2006-05-11 Thyssenkrupp Steel Ag Procede pour transformer une platine pour toles de grande surface en une piece moulee, telle qu'une partie exterieure d'une carrosserie de vehicule
CN100500320C (zh) * 2008-05-19 2009-06-17 哈尔滨理工大学 一种提高板材充液拉深成形极限的装置及方法
CN107952872A (zh) * 2017-12-08 2018-04-24 山东大学 基于可调柔性多支撑的液压辅助渐进成形装置及方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10208532C1 (de) * 2002-02-27 2003-06-05 Mueller Weingarten Maschf Vorrichtung zur Ausformung lokaler Formkonturen
DE102010052742B4 (de) 2010-11-26 2023-11-30 Cellcentric Gmbh & Co. Kg Verfahren und Vorrichtung zur Herstellung von Bauelementen für eine elektrochemische Zelle, insbesondere eine Brennstoffzelle, oder einen elektrochemischen Energiespeicher
DE102010052741B4 (de) 2010-11-26 2023-12-28 Cellcentric Gmbh & Co. Kg Verfahren und Vorrichtung zur Herstellung von Bauelementen für eine elektrochemische Zelle, insbesondere eine Brennstoffzelle, oder einen elektrochemischen Energiespeicher
DE102012106299A1 (de) 2011-07-12 2013-01-31 Friedrich Klaas Vorrichtung und Verfahren zum Tiefziehen von Blechen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07178473A (ja) * 1993-12-24 1995-07-18 Nissan Motor Co Ltd 液圧成形装置
JPH0866728A (ja) * 1994-08-31 1996-03-12 Nissan Motor Co Ltd 液圧成形装置及び液圧成形方法
DE10016804A1 (de) * 2000-04-05 2001-10-18 Thyssenkrupp Stahl Ag Verfahren und Vorrichtung zum Herstellen von Bauteilen aus einer tiefziehbaren Platine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4417460B4 (de) * 1994-05-19 2006-08-24 Kleiner, Matthias, Priv.-Doz. Dr.-Ing. Verfahren und Vorrichtung zur Herstellung von Blechformteilen durch Streck- oder Tiefziehen aus Platinen
DE19624036A1 (de) * 1996-06-17 1997-12-18 Matthias Prof Dr Ing Kleiner Verfahren und Werkzeugsystem zum pneumomechanischen Tiefziehen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07178473A (ja) * 1993-12-24 1995-07-18 Nissan Motor Co Ltd 液圧成形装置
JPH0866728A (ja) * 1994-08-31 1996-03-12 Nissan Motor Co Ltd 液圧成形装置及び液圧成形方法
DE10016804A1 (de) * 2000-04-05 2001-10-18 Thyssenkrupp Stahl Ag Verfahren und Vorrichtung zum Herstellen von Bauteilen aus einer tiefziehbaren Platine

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 10, 30. November 1995 (1995-11-30) & JP 07 178473 A (NISSAN MOTOR CO LTD), 18. Juli 1995 (1995-07-18) *
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 07, 31. Juli 1996 (1996-07-31) & JP 08 066728 A (NISSAN MOTOR CO LTD), 12. März 1996 (1996-03-12) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006048302A1 (fr) * 2004-11-08 2006-05-11 Thyssenkrupp Steel Ag Procede pour transformer une platine pour toles de grande surface en une piece moulee, telle qu'une partie exterieure d'une carrosserie de vehicule
US7802458B2 (en) 2004-11-08 2010-09-28 Thyssenkrupp Steel Ag Process for fabricating large-surface metal plate into a shaped part, such as an outer skin panel of a vehicle body
CN100500320C (zh) * 2008-05-19 2009-06-17 哈尔滨理工大学 一种提高板材充液拉深成形极限的装置及方法
CN107952872A (zh) * 2017-12-08 2018-04-24 山东大学 基于可调柔性多支撑的液压辅助渐进成形装置及方法

Also Published As

Publication number Publication date
EP1147833A3 (fr) 2003-01-15
DE10019685A1 (de) 2001-10-25

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