ATE408465T1 - METHOD AND DEVICE FOR REDUCING WRINKLES DURING THERMAL DRAWING - Google Patents

METHOD AND DEVICE FOR REDUCING WRINKLES DURING THERMAL DRAWING

Info

Publication number
ATE408465T1
ATE408465T1 AT03759078T AT03759078T ATE408465T1 AT E408465 T1 ATE408465 T1 AT E408465T1 AT 03759078 T AT03759078 T AT 03759078T AT 03759078 T AT03759078 T AT 03759078T AT E408465 T1 ATE408465 T1 AT E408465T1
Authority
AT
Austria
Prior art keywords
downholder
blank
deep drawing
edge
during thermal
Prior art date
Application number
AT03759078T
Other languages
German (de)
Inventor
Pieter Bolt
Jan Gunnink
Leeuwen Jacobus Van
Nooy Margriet De
Robert-Jan Werkhoven
Original Assignee
Tno
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 Tno filed Critical Tno
Application granted granted Critical
Publication of ATE408465T1 publication Critical patent/ATE408465T1/en

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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/21—Deep-drawing without fixing the border of the blank
    • 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
    • B21D24/14—Devices controlling or operating blank holders independently, or in conjunction with dies pneumatically or hydraulically

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Details Of Garments (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

A method and apparatus for deep drawing a product from a blank ( 5 ), in which, during deep drawing, the blank ( 5 ) is held near its edge by a downholder ( 8 ) against a die ring cooperating with the downholder ( 8 ), thereby preventing, at least reducing wrinkle formation in the blank, by adjusting, at the beginning of deep drawing, the downholder ( 8 ) such that a downholder ( 8 ) force exerted by the downholder ( 8 ) on the edge of the blank is relatively small, and by controlling, during the further course of the process, the downholder ( 8 ) on the basis of a predetermined thickness trend of the mentioned edge during deep drawing and/or a trend or critical value derived from this thickness trend.
AT03759078T 2002-10-24 2003-10-23 METHOD AND DEVICE FOR REDUCING WRINKLES DURING THERMAL DRAWING ATE408465T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1021738A NL1021738C2 (en) 2002-10-24 2002-10-24 Method and device for reducing crease formation during deep drawing.

Publications (1)

Publication Number Publication Date
ATE408465T1 true ATE408465T1 (en) 2008-10-15

Family

ID=32171726

Family Applications (1)

Application Number Title Priority Date Filing Date
AT03759078T ATE408465T1 (en) 2002-10-24 2003-10-23 METHOD AND DEVICE FOR REDUCING WRINKLES DURING THERMAL DRAWING

Country Status (7)

Country Link
US (1) US20050268685A1 (en)
EP (1) EP1554067B1 (en)
AT (1) ATE408465T1 (en)
AU (1) AU2003275734A1 (en)
DE (1) DE60323658D1 (en)
NL (1) NL1021738C2 (en)
WO (1) WO2004037460A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6075304B2 (en) * 2013-03-28 2017-02-08 株式会社豊田中央研究所 Hot press molding method and hot press molding apparatus
JP6265196B2 (en) * 2015-11-06 2018-01-24 株式会社山王 Method and apparatus for evaluating flexibility of sheet-like object
DE102016118418A1 (en) 2016-09-29 2018-03-29 Thyssenkrupp Ag Method for producing a molded component with a dimensionally stable frame area
JP6835023B2 (en) * 2018-03-26 2021-02-24 Ｊｆｅスチール株式会社 Method for evaluating delayed fracture characteristics of high-strength steel sheets
CN114535392B (en) * 2022-02-14 2024-05-03 一汽解放汽车有限公司 Manufacturing method of drawing rib of drawing die and drawing die
US11833567B2 (en) * 2022-04-26 2023-12-05 GM Global Technology Operations LLC Die adjustment systems and methods with draw in sensors

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH576297A5 (en) * 1974-06-11 1976-06-15 Luwa Ag
US4316379A (en) * 1978-09-12 1982-02-23 Mts Systems Corporation Deep drawing press with blanking and draw pad pressure control
JPS56500008A (en) * 1978-12-21 1981-01-08
DE3735582C1 (en) * 1987-10-21 1988-04-28 Daimler Benz Ag Double-acting press for pulling sheet metal parts
DD289724A5 (en) * 1989-12-05 1991-05-08 Fz Fuer Umform- Und Plastverarbeitungstechnik,De METHOD FOR INCREASING THE BORDER DEPENDING RULE
BE1004564A3 (en) * 1990-08-30 1992-12-15 Cockerill Rech & Dev Control device force clamp blank in a press.
DE4434419A1 (en) * 1994-09-26 1996-03-28 Mueller Weingarten Maschf Mechanical and hydraulic presses
DE19718841A1 (en) * 1996-05-06 1997-11-13 Mueller Weingarten Maschf Material flow control for bending sheet metal workpiece
WO2002090875A2 (en) * 2001-05-07 2002-11-14 Northwestern University Real-time draw-in sensors and methods of fabrication

Also Published As

Publication number Publication date
DE60323658D1 (en) 2008-10-30
NL1021738C2 (en) 2004-04-27
EP1554067B1 (en) 2008-09-17
EP1554067A1 (en) 2005-07-20
US20050268685A1 (en) 2005-12-08
WO2004037460A1 (en) 2004-05-06
AU2003275734A1 (en) 2004-05-13

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties
REN Ceased due to non-payment of the annual fee