Title:
PUNCH PRESS DIE
Document Type and Number:
WIPO Patent Application WO/2003/106067
Kind Code:
A1
Abstract:
A punch press die (1) comprises a punch tip (11) for performing press work, and the punch tip (11) is provided in a punch body (13) slideably fitted in a hollow cylinder-shaped punch guide (9). The punch tip (11) comprises an appropriate number of long punch tips (41) for pressing having pressing portions (41A) at the tips and an appropriate number of punch tips (43) for holding with a length shorter than that of the punch tips (41) for pressing. The two kinds of tips (41, 43) are removably provided on the punch body (13). At least either the punch tips (41) for pressing or the punch tips (43) are divided into plural numbers.
Inventors:
TOMITA KAZUO (JP)
Application Number:
PCT/JP2003/007504
Publication Date:
December 24, 2003
Filing Date:
June 12, 2003
Export Citation:
Assignee:
AMADA CO LTD (JP)
TOMITA KAZUO (JP)
TOMITA KAZUO (JP)
International Classes:
B21D28/00; B21D28/10; B21D28/34; B21D37/02; (IPC1-7): B21D28/10; B21D28/34; B21D37/02
Foreign References:
| JPH05285559A | 1993-11-02 | |||
| JPH01192429A | 1989-08-02 | |||
| JPS6277124A | 1987-04-09 | |||
| JPH05317990A | 1993-12-03 | |||
| JPH0615378A | 1994-01-25 | |||
| US6189361B1 | 2001-02-20 | |||
| US5848866A | 1998-12-15 | |||
| JPH0480614U | 1992-07-14 |
Other References:
See also references of EP 1529576A4
Attorney, Agent or Firm:
Miyoshi, Hidekazu (Toranomon Daiichi Building 2-3, Toranomon 1-chom, Minato-ku Tokyo, JP)
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