Title:
METHOD OF PROCESSING FORMED PRODUCT, AND METAL COPE AND METAL DRAG USED FOR THE METHOD
Document Type and Number:
WIPO Patent Application WO/2004/030842
Kind Code:
A1
Abstract:
A method of processing a formed product by a punch press, comprising a step for leaving minute connection parts (D) connecting a work (W) to a material (C) when slits (S1, S2) are formed in the work (W) along the outline of the material (C) formed in the formed product (B), a step for forming the formed product (B) by bending the material through a bent part (E) downward by the association of a metal cope (1) with a metal drag (3), and a step for dropping the formed product by disconnecting the formed product (B) from the work (W) connected to each other through the minute connection parts (D).
Inventors:
ENDO SHIGERU (JP)
Application Number:
PCT/JP2003/012507
Publication Date:
April 15, 2004
Filing Date:
September 30, 2003
Export Citation:
Assignee:
AMADA CO LTD (JP)
ENDO SHIGERU (JP)
ENDO SHIGERU (JP)
International Classes:
B21D5/00; B21D5/04; B21D28/10; B21D28/36; B21D35/00; (IPC1-7): B21D5/01; B21D28/36
Domestic Patent References:
WO1998053931A1 | 1998-12-03 |
Foreign References:
JPH07164058A | 1995-06-27 | |||
JPH08323428A | 1996-12-10 | |||
EP0618660A1 | 1994-10-05 | |||
JP2000024716A | 2000-01-25 | |||
JPS61289920A | 1986-12-19 | |||
JP2545176B2 | 1996-10-16 | |||
JP2000153321A | 2000-06-06 | |||
JP2001277058A | 2001-10-09 | |||
JPS6487018A | 1989-03-31 | |||
JP2000084630A | 2000-03-28 | |||
JPH0732066A | 1995-02-03 | |||
JPH07164058A | 1995-06-27 | |||
JP2000024716A | 2000-01-25 |
Other References:
See also references of EP 1568421A4
Attorney, Agent or Firm:
Miyoshi, Hidekazu (Toranomon Daiichi Building 2-3, Toranomon 1-chom, Minato-ku Tokyo, JP)
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