Title:
PRESS MOLDING METHOD FOR CUP-SHAPED MEMBER
Document Type and Number:
WIPO Patent Application WO/2014/185357
Kind Code:
A1
Abstract:
A press molding method for a cup-shaped member has: a first step for pressing material (1) into a lower tool hole part (5a) of a first lower tool (5) and bending the material (1) by relatively moving a first upper tool (2) and a second upper tool (3) in a direction approaching the first lower tool (5); a second step for making part of the material (1) flow into a gap formed between an upper tool inclined part (3a) and a hole part inclined part (5c) so as to thicken the aforementioned part by moving a third upper tool (4) relatively in a direction approaching the first lower tool (5) and pressing a cylindrical end part (1d) of the material (1); and a third step for press molding the part that has been made thicker in the second step in a shape that extends in a direction substantially perpendicular to a center axis (L1) of the cup-shape member using a second mold.
Inventors:
WADA YASUHIRO (JP)
YAMAMOTO SHUJI (JP)
ABE MASAYUKI (JP)
TSUKANO YASUSHI (JP)
YAMAMOTO SHUJI (JP)
ABE MASAYUKI (JP)
TSUKANO YASUSHI (JP)
Application Number:
PCT/JP2014/062496
Publication Date:
November 20, 2014
Filing Date:
May 09, 2014
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP (JP)
International Classes:
B21D22/26; B21D24/00
Foreign References:
| JP2004322104A | 2004-11-18 | |||
| JP2001047175A | 2001-02-20 | |||
| JP2010214381A | 2010-09-30 | |||
| JP2004098153A | 2004-04-02 | |||
| DE102007013174A1 | 2008-09-25 |
Attorney, Agent or Firm:
KOKUBUN, Takayoshi (JP)
Takayoshi Kokubu (JP)
Takayoshi Kokubu (JP)
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