Title:
PRESS MOLDING METHOD
Document Type and Number:
WIPO Patent Application WO/2014/073602
Kind Code:
A1
Abstract:
By compressing a compression section (B1) at the bottom wall of a cup-shaped processed material (B) with an inner punch (11) and an inner die (14) and moving same in the direction away from a middle die (15) while pressing the inner die (14) toward the inner punch (11) and also compressing a compression section (B2), which is the outer edge of the processed material (B) in the radial direction, with an outer punch (13) and an outer die (16) and moving same in the direction approaching the middle die (15) to limit the flow of processed material (B) at the compression section (B2) in the direction away from a central axis (10), thinning of the compression section (B1) and thickening of a vertical wall section (B3) of the processed material (B) that is interposed between a middle punch (12) and the inner die (14) and of a vertical wall section (B4) of the processed material (B) that is interposed between the middle punch (12) and the outer die (16) are performed.
Inventors:
YAMAGATA MITSUHARU (JP)
YAMAMOTO SHUJI (JP)
WADA YASUHIRO (JP)
YAMAMOTO SHUJI (JP)
WADA YASUHIRO (JP)
Application Number:
PCT/JP2013/080101
Publication Date:
May 15, 2014
Filing Date:
November 07, 2013
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP (JP)
International Classes:
B21D22/24; B21D24/00; B21D22/26
Foreign References:
| JP2000301284A | 2000-10-31 | |||
| JPH07185726A | 1995-07-25 | |||
| JPS6449326U | 1989-03-27 | |||
| JPH10296377A | 1998-11-10 | |||
| JP2004322104A | 2004-11-18 | |||
| JP2000317565A | 2000-11-21 |
Attorney, Agent or Firm:
KOKUBUN, Takayoshi (JP)
Takayoshi Kokubu (JP)
Takayoshi Kokubu (JP)
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