Title:
MANUFACTURING METHOD AND MANUFACTURING DEVICE FOR SHEARED ARTICLE
Document Type and Number:
WIPO Patent Application WO/2015/170707
Kind Code:
A1
Abstract:
This manufacturing method for a sheared article performs multiple iterations of a shearing process, which includes a step for fixing a member to be processed to a die, and a step for punching the member to be processed by moving a punch (110) and the die towards each other and performing punching on the member to be processed. The shearing process is performed using the punch, which has a first end surface (111) that faces the member to be processed and a first blade edge that includes a first receding surface (112) that recedes from the first end surface relative to the direction towards the die when the series of shearing processes start, and the die that is provided with a second end surface that faces the member to be processed and a second blade edge that includes a second receding surface that recedes from the second end surface relative to the direction towards the punch when the series of shearing processes start.
Inventors:
MATSUNO TAKASHI (JP)
SATO KOICHI (JP)
YASUTOMI TAKASHI (JP)
SATO KOICHI (JP)
YASUTOMI TAKASHI (JP)
Application Number:
PCT/JP2015/063215
Publication Date:
November 12, 2015
Filing Date:
May 07, 2015
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP (JP)
International Classes:
B21D28/02; B21D28/14
Foreign References:
| JP2012011393A | 2012-01-19 | |||
| JP2002321021A | 2002-11-05 |
Attorney, Agent or Firm:
SHIGA Masatake et al. (JP)
Masatake Shiga (JP)
Masatake Shiga (JP)
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