ATE408465T1 - METHOD AND DEVICE FOR REDUCING WRINKLES DURING THERMAL DRAWING - Google Patents
METHOD AND DEVICE FOR REDUCING WRINKLES DURING THERMAL DRAWINGInfo
- 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
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)
- Bending Of Plates, Rods, And Pipes (AREA)
- Details Of Garments (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.
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)
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)
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 |
EP0806256B1 (en) * | 1996-05-06 | 1999-11-10 | Müller-Weingarten AG | Method for controlling the material flow during the drawing of sheet metal parts and device for carrying out the method |
WO2002090875A2 (en) * | 2001-05-07 | 2002-11-14 | Northwestern University | Real-time draw-in sensors and methods of fabrication |
-
2002
- 2002-10-24 NL NL1021738A patent/NL1021738C2/en not_active IP Right Cessation
-
2003
- 2003-10-23 DE DE60323658T patent/DE60323658D1/en not_active Expired - Lifetime
- 2003-10-23 AU AU2003275734A patent/AU2003275734A1/en not_active Abandoned
- 2003-10-23 AT AT03759078T patent/ATE408465T1/en not_active IP Right Cessation
- 2003-10-23 EP EP03759078A patent/EP1554067B1/en not_active Expired - Lifetime
- 2003-10-23 US US10/532,360 patent/US20050268685A1/en not_active Abandoned
- 2003-10-23 WO PCT/NL2003/000720 patent/WO2004037460A1/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
WO2004037460A1 (en) | 2004-05-06 |
US20050268685A1 (en) | 2005-12-08 |
DE60323658D1 (en) | 2008-10-30 |
AU2003275734A1 (en) | 2004-05-13 |
EP1554067B1 (en) | 2008-09-17 |
EP1554067A1 (en) | 2005-07-20 |
NL1021738C2 (en) | 2004-04-27 |
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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 |