Title:
PRESS DIE APPARATUS FOR THIN PLATE AND PRESS FORMING METHOD
Document Type and Number:
WIPO Patent Application WO/2004/067200
Kind Code:
A1
Abstract:
A press die apparatus for thin plate has a punch (1), a die (2), a wrinkle holding-down die (3), friction force-measuring means (4) installed between the die and the wrinkle holding-down die, and a hydraulic cylinder (5).
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Inventors:
SUZUKI NORIYUKI (JP)
YAMAGATA MITSUHARU (JP)
KUWAYAMA TAKUYA (JP)
YAMAGATA MITSUHARU (JP)
KUWAYAMA TAKUYA (JP)
Application Number:
PCT/JP2004/000917
Publication Date:
August 12, 2004
Filing Date:
January 30, 2004
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
SUZUKI NORIYUKI (JP)
YAMAGATA MITSUHARU (JP)
KUWAYAMA TAKUYA (JP)
SUZUKI NORIYUKI (JP)
YAMAGATA MITSUHARU (JP)
KUWAYAMA TAKUYA (JP)
International Classes:
B21D24/04; B21D24/02; B30B15/20; B30B15/22; (IPC1-7): B21D24/02
Foreign References:
| JPH05285554A | 1993-11-02 | |||
| JPH0824960A | 1996-01-30 | |||
| JPH07266100A | 1995-10-17 | |||
| JPH01266923A | 1989-10-24 | |||
| JPH05285555A | 1993-11-02 | |||
| JPH05161925A | 1993-06-29 |
Attorney, Agent or Firm:
Aoki, Atsushi (ISHIDA & ASSOCIATES Toranomon 37 Mori
Bldg., 5-1, Toranomon 3-chome, Minato-k, Tokyo 23, JP)
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