Title:
METHOD FOR MANUFACTURING CURVED MEMBER
Document Type and Number:
WIPO Patent Application WO/2020/105647
Kind Code:
A1
Abstract:
In a method for manufacturing a curved member having a top plate portion and a vertical wall portion and having a curved part on at least one of connection parts when viewed from the top plate portion side and the vertical wall portion side, the method comprises: a first step for molding an intermediate member by drawing a metal plate; and a second step for bending the intermediate member. In the first step, molding is performed such that a position of an end of the vertical wall portion of the intermediate member is a position that is in contact with a curved surface outside forming surface or a metal plate holding surface of a die or a position outside the position that is in contact with the metal plate holding surface. In the first step, a curved part is formed at an end of the vertical wall portion. In the second step, the vertical wall portion is molded into a final shape by bending and deforming the curved part.
Inventors:
MIYAGI TAKASHI (JP)
MURAKAMI KEIICHI (JP)
NATORI JUNKI (JP)
TANAKA YASUHARU (JP)
OGAWA MISAO (JP)
SUGAWARA MINORU (JP)
MURAKAMI KEIICHI (JP)
NATORI JUNKI (JP)
TANAKA YASUHARU (JP)
OGAWA MISAO (JP)
SUGAWARA MINORU (JP)
Application Number:
PCT/JP2019/045322
Publication Date:
May 28, 2020
Filing Date:
November 19, 2019
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
B21D22/26; B21D24/00; B21D24/04; B21D53/88
Domestic Patent References:
| WO2016171230A1 | 2016-10-27 |
Foreign References:
| JP2016221558A | 2016-12-28 |
Attorney, Agent or Firm:
TAIYO, NAKAJIMA & KATO (JP)
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