Title:
METHOD FOR FORMING UNDERCUT AND METHOD FOR MANUFACTURING MOLDED ARTICLE HAVING UNDERCUT
Document Type and Number:
WIPO Patent Application WO/2012/026515
Kind Code:
A1
Abstract:
A method for forming an undercut and a method for manufacturing a molded article having an undercut, whereby an undercut is formed in a molded article, said molded article being obtained by plastically working a plate-shaped workpiece, by pressing said molded article using a punch and a die, thereby making the molding process more economical and efficient. A section of a plate body (91)—the plate-shaped workpiece—outside a section in which an inside angled part (94)—the undercut—is formed is bent at an angle that makes an undercut surface (94a), which is part of the inside angled part (94), parallel to the direction in which the punch (110) applies pressure. Also, an outside wall section (93) tilted at the aforementioned bend angle is formed in the aforementioned outside section. Then, by bending the aforementioned bent section back in the opposite direction, the plate body (91) with the aforementioned outside wall section (93) formed at an angle is formed such that the inside angled part (94) stands up from the surface of the plate body (91).
Inventors:
NAKAMURA YOSHIHARU (JP)
YAMASHITA AKIHIRO (JP)
OTSUKA YUJI (JP)
YAMASHITA AKIHIRO (JP)
OTSUKA YUJI (JP)
Application Number:
PCT/JP2011/069144
Publication Date:
March 01, 2012
Filing Date:
August 25, 2011
Export Citation:
Assignee:
FCC KK (JP)
NAKAMURA YOSHIHARU (JP)
YAMASHITA AKIHIRO (JP)
OTSUKA YUJI (JP)
NAKAMURA YOSHIHARU (JP)
YAMASHITA AKIHIRO (JP)
OTSUKA YUJI (JP)
International Classes:
B21D22/26; B21D19/08
Foreign References:
| JPH1058040A | 1998-03-03 | |||
| JPH09276934A | 1997-10-28 |
Attorney, Agent or Firm:
ITO HIROYUKI (JP)
居藤 Hiroyuki (JP)
居藤 Hiroyuki (JP)
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Claims:
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