Title:
PRESS MOLD FOR SHEET METAL FORMING, METHOD OF TREATING PRESS MOLD SURFACE, AND PROCESS FOR MANUFACTURING AUTOMOBILE BODY
Document Type and Number:
WIPO Patent Application WO/2009/054175
Kind Code:
A1
Abstract:
A press mold that even when foreign matter, such as iron powder, sticks to a mold
surface, would maintain a high fair quality ratio of work after press working;
a relevant method of treating a press mold surface; and a process for manufacturing
an automobile body. The press mold (1) for sheet metal forming at its surface
(2) has a multiplicity of depressions (3), and the roughness (Ry) of the mold surface
(2) provided with a multiplicity of depressions (3) is in the range of 30 to 38 μm.
Further, there is disclosed a method of treating a press mold surface, comprising
performing shot blasting on the surface of the press mold to thereby form a multiplicity
of depressions and polishing the shot blasted surface of the press mold so that
the roughness (Ry) of the surface of the press mold falls within the range of 30
to 38 μm.
Inventors:
YAGI TAKAYUKI (JP)
MATSUYAMA AKIHIRO (JP)
KOYAMA SHINICHI (JP)
FUKUSHIMA MASATO (JP)
TAKAHASHI KINJI (JP)
TOSA KAZUMICHI (JP)
SEINO MASASHI (JP)
TERADA TAKESHI (JP)
YAMAKAWA YUU (JP)
TAKANO MOTOO (JP)
MATSUYAMA AKIHIRO (JP)
KOYAMA SHINICHI (JP)
FUKUSHIMA MASATO (JP)
TAKAHASHI KINJI (JP)
TOSA KAZUMICHI (JP)
SEINO MASASHI (JP)
TERADA TAKESHI (JP)
YAMAKAWA YUU (JP)
TAKANO MOTOO (JP)
Application Number:
PCT/JP2008/064169
Publication Date:
April 30, 2009
Filing Date:
July 31, 2008
Export Citation:
Assignee:
HONDA MOTOR CO LTD (JP)
YAGI TAKAYUKI (JP)
MATSUYAMA AKIHIRO (JP)
KOYAMA SHINICHI (JP)
FUKUSHIMA MASATO (JP)
TAKAHASHI KINJI (JP)
TOSA KAZUMICHI (JP)
SEINO MASASHI (JP)
TERADA TAKESHI (JP)
YAMAKAWA YUU (JP)
TAKANO MOTOO (JP)
YAGI TAKAYUKI (JP)
MATSUYAMA AKIHIRO (JP)
KOYAMA SHINICHI (JP)
FUKUSHIMA MASATO (JP)
TAKAHASHI KINJI (JP)
TOSA KAZUMICHI (JP)
SEINO MASASHI (JP)
TERADA TAKESHI (JP)
YAMAKAWA YUU (JP)
TAKANO MOTOO (JP)
International Classes:
B21D37/20; C25D7/00
Foreign References:
| JPS5214707B2 | 1977-04-23 | |||
| JPH05115930A | 1993-05-14 | |||
| JPS63268524A | 1988-11-07 | |||
| JP2001019897A | 2001-01-23 | |||
| JP2005221931A | 2005-08-18 | |||
| JPH03112647A | 1991-05-14 | |||
| JP2007100208A | 2007-04-19 | |||
| JP2007084339A | 2007-04-05 | |||
| JPH0833928A | 1996-02-06 | |||
| JP2006151176A | 2006-06-15 | |||
| JP2001030951A | 2001-02-06 | |||
| JP2002302792A | 2002-10-18 | |||
| JPH06262689A | 1994-09-20 | |||
| EP0418893A2 | 1991-03-27 |
Other References:
See also references of EP 2206567A4
Attorney, Agent or Firm:
SHOBAYASHI, Masayuki et al. (25-8 Higashi-ikebukuro 1-chome, Toshima-k, Tokyo 13, JP)
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