Title:
MANUFACTURING METHOD OF MOLDING MATERIAL
Document Type and Number:
WIPO Patent Application WO/2016/158383
Kind Code:
A1
Abstract:
By performing multi-stage drawing with respect to a material metal plate, a molding material (1) having a cylindrical trunk portion (10) and a flange portion (11) formed at an end portion of the trunk portion is manufactured. In the multi-stage drawing, a preliminary drawing that forms a preliminary body (20) having a trunk element (20a) from the material metal plate (2), a compression drawing that is performed at least once after the preliminary drawing and that forms the trunk portion (10) by drawing the trunk element (20a) while applying compressive force, the pressure of which can be adjusted, to the trunk element (20a), and a finishing ironing that is performed at least once following the compression drawing and that is for securing dimensional accuracy.
Inventors:
NAKAMURA NAOFUMI (JP)
YAMAMOTO YUDAI (JP)
YAMAMOTO YUDAI (JP)
Application Number:
PCT/JP2016/058136
Publication Date:
October 06, 2016
Filing Date:
March 15, 2016
Export Citation:
Assignee:
NISSHIN STEEL CO LTD (JP)
International Classes:
B21D22/28; B21D22/20
Foreign References:
| JP2000005827A | 2000-01-11 | |||
| JPS60146526U | 1985-09-28 | |||
| JP2001259750A | 2001-09-25 | |||
| JPH1157914A | 1999-03-02 | |||
| JP2013514185A | 2013-04-25 |
Other References:
See also references of EP 3278898A4
Attorney, Agent or Firm:
SOGA, Michiharu et al. (JP)
Michiharu Soga (JP)
Michiharu Soga (JP)
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