Title:
PRESS-FORMING METHOD AND PRESS-FORMED PRODUCT
Document Type and Number:
WIPO Patent Application WO/2021/205692
Kind Code:
A1
Abstract:
A press-forming method according to the present invention is for performing press-forming to acquire a press-formed product 1 which has a top plate portion 3, a vertical wall portion 7 continuously formed from the top plate portion 3 through a punch shoulder portion 5, and a flange portion 11 continuously formed from the vertical wall portion 7 through a die shoulder portion 9, and is provided with a curved part 13 which is curved in a depressed shape in a top view, wherein a bending radius of the punch shoulder portion 5 in the curved part 13 is increased toward an end portion side from a center portion of the curve.
Inventors:
FUJII YUSUKE (JP)
URABE MASAKI (JP)
URABE MASAKI (JP)
Application Number:
PCT/JP2020/044608
Publication Date:
October 14, 2021
Filing Date:
December 01, 2020
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
B21D22/20; B21D22/26; B21D24/04; B21D53/88
Domestic Patent References:
| WO2019225661A1 | 2019-11-28 |
Foreign References:
| JP2016175089A | 2016-10-06 | |||
| JP2018075641A | 2018-05-17 | |||
| JP2011195103A | 2011-10-06 | |||
| JP5168429B2 | 2013-03-21 | |||
| JP6028956B1 | 2016-11-24 | |||
| JP5168429B2 | 2013-03-21 | |||
| JP6028956B1 | 2016-11-24 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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