Title:
MOLDING HAVING STRETCH FLANGE AND ITS MANUFACTURING METHOD
Document Type and Number:
Japanese Patent JP2017202523
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a press forming method being a manufacturing method of a molding having a stretch flange which is suppressed in the thinning of a plate thickness caused by an influence of compression deformation, being a molding which can be molded by one process without changing a design shape of the flange, and has the stretch flange without the necessity for depending on a punching condition.SOLUTION: An integrally-molded molding comprises a stretch flange which is formed on a flat plate along a recessed curved line viewed from the inside of the flat plate, and has a salient part which is salient to the outside of a face of the flat plate on the flat plate, thus alleviating compression deformation, and suppressing the thinning of a plate thickness of an end of the stretch flange.SELECTED DRAWING: Figure 5
Inventors:
SAITO MASAHIRO
Application Number:
JP2017067974A
Publication Date:
November 16, 2017
Filing Date:
March 30, 2017
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP
International Classes:
B21D22/26; B21D19/08; B21D24/00
Domestic Patent References:
| JP2015100812A | 2015-06-04 | |||
| JP2014240078A | 2014-12-25 | |||
| JP2016131984A | 2016-07-25 | |||
| JP2008213028A | 2008-09-18 |
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Hiroshi Kamematsu
Fukuchi Ritsuo
Manabu Saito
Nakamura Asayuki
Takashi Ishida
Tetsuji Koga
Hiroshi Kamematsu
Fukuchi Ritsuo
Manabu Saito
Nakamura Asayuki