Title:
METHOD FOR MANUFACTURING METAL MEMBER
Document Type and Number:
WIPO Patent Application WO/2018/096693
Kind Code:
A1
Abstract:
The present invention reduces the possibility of wrinkles forming between a cylindrical part and the periphery of a base thereof. A method for manufacturing a metal member is provided with a cylindrical part forming step S200 and a base wall thickness increasing step S202. The cylindrical part forming step S200 comprises forming a cylindrical part in a metal plate-shaped material. The base wall thickness increasing step S202 comprises increasing the wall thickness of a base portion of the cylindrical part. The base wall thickness increasing step S202 has an internal-peripheral-portion movement step S210 and a push-out step S214. In the internal-peripheral-portion movement step S210, a punch causes an internal peripheral portion on a distal-end side of the cylindrical part to move toward an internal peripheral portion on the base side. In the push-out step S214, the punch pushes out the moved portion of the cylindrical part moved in the internal-peripheral-portion movement step S210 in the opposite direction from the protrusion direction of the cylindrical part as viewed from the periphery of the base of the cylindrical part in a state in which the periphery of the base of the cylindrical part is interposed between a female die and a pressing die.
Inventors:
FUJII NAOKI (JP)
Application Number:
PCT/JP2017/000468
Publication Date:
May 31, 2018
Filing Date:
January 10, 2017
Export Citation:
Assignee:
KANEMITSU CORP (JP)
International Classes:
B21D19/08
Foreign References:
| JP2005000977A | 2005-01-06 | |||
| JPH11138219A | 1999-05-25 | |||
| US20100294064A1 | 2010-11-25 |
Attorney, Agent or Firm:
SUZUE Shoji (JP)
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