Title:
PUNCHING DIE
Document Type and Number:
WIPO Patent Application WO/2006/054694
Kind Code:
A1
Abstract:
A punching die capable of increasing the working accuracy of a work (W) by suppressing a clearance between a punch body (11) and a punch guide (5) to almost eliminate a step on the punched surface (cut surface) of the work (W). The punching die comprises a plurality of rotation restricting means. Each of the rotation restricting means comprises the tubular punch guide (5), the punch body (11) vertically movably installed in the punch guide (5), a punch head (25) installed at the upper end part of the punch body (11), a stripper spring (27) fitted to the lower side of the punch head (25), keyways (35) and (41) formed in the punch guide (5) or the punch body (11) so as to be vertically extended, and keys (37) and (43) installed in the punch body (11) or the punch guide (5) and vertically movably fitted into the keyways (35) and (41).
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Inventors:
TAKAHASHI YUKIO
SHIMIZU SATOSHI
NAKAI HIROSHI
SHIMIZU SATOSHI
NAKAI HIROSHI
Application Number:
PCT/JP2005/021243
Publication Date:
May 26, 2006
Filing Date:
November 18, 2005
Export Citation:
Assignee:
AMADA CO LTD (JP)
TAKAHASHI YUKIO
SHIMIZU SATOSHI
NAKAI HIROSHI
TAKAHASHI YUKIO
SHIMIZU SATOSHI
NAKAI HIROSHI
International Classes:
B21D28/34; B21D28/36
Foreign References:
| JPH04129514U | 1992-11-26 | |||
| JPH08504369A | 1996-05-14 | |||
| JP2002205130A | 2002-07-23 | |||
| JP2002045932A | 2002-02-12 | |||
| JPH04197532A | 1992-07-17 | |||
| JPH0821339A | 1996-01-23 | |||
| JPH03189021A | 1991-08-19 | |||
| JPH0180223U | 1989-05-30 |
Attorney, Agent or Firm:
Miyoshi, Hidekazu (2-8 Toranomon 1-chome,, Minato-k, Tokyo01, JP)
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