Title:
PRESS FORMING METHOD
Document Type and Number:
WIPO Patent Application WO/2019/102972
Kind Code:
A1
Abstract:
The present invention is a press forming method for obtaining a target formed article (14) that has an edge-shaped ridge section (24) and that has a negative surface (14a) on one side and a positive surface (14b) on the other side with respect to the ridge section (24) as a border, said press forming method including: a first step for forming an intermediate formed article (12) having an intermediate ridge section (26) having a larger radius than the edge radius of the ridge section (24); and a second step for forming the target formed article (14) from the intermediate formed article (12). The intermediate formed article (12) has a first intermediate positive surface (12a) that corresponds to the site extending from the ridge section (24) to the negative surface (14a) of the target formed article (14) and also has a second intermediate positive surface (12b) that corresponds to the site extending from the ridge section (24) to the positive surface (14b) of the target formed article (14) and that continues from the first intermediate positive surface (12a) and an intermediate negative surface (12c) continuing from the second intermediate positive surface (12b).
Inventors:
AKIBA HIROKATSU (JP)
SANO TAKESHI (JP)
MATSUTANI KENJI (JP)
KANO TAKAYUKI (JP)
SANO TAKESHI (JP)
MATSUTANI KENJI (JP)
KANO TAKAYUKI (JP)
Application Number:
PCT/JP2018/042728
Publication Date:
May 31, 2019
Filing Date:
November 19, 2018
Export Citation:
Assignee:
HONDA MOTOR CO LTD (JP)
International Classes:
B21D22/26
Domestic Patent References:
| WO2016087014A1 | 2016-06-09 | |||
| WO2008047764A1 | 2008-04-24 |
Foreign References:
| JP2017030038A | 2017-02-09 | |||
| DE102011115219A1 | 2013-03-28 |
Attorney, Agent or Firm:
CHIBA Yoshihiro et al. (JP)
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