Title:
プレス成形金型、プレス成形方法
Document Type and Number:
Japanese Patent JP6981502
Kind Code:
B2
Abstract:
A press forming tool 13 according to the present invention are configured to form a press forming part 1, the press forming part 1 including: a top portion 3 having a convex and concave outer edge part 11 in which a convex outer edge part 11a protruding outward in an in-plane direction and a concave outer edge part 11b recessed inward in the in-plane direction are continuous to each other via a connecting outer edge part 11c; and a flange portion 5 formed continuously from the convex and concave outer edge part 11 of the top portion 3, the press forming tool 13 including: an upper die 15 and a lower die 17; and a lower pad 21 and an upper pad 23, which sandwich a blank 19 in cooperation with the upper die 15 and the lower die 17, in which, during an initial stage of forming, the flange portion 5 is formed on the convex outer edge part 11a, and a torsional shape portion 25 having a torsional shape toward the concave outer edge part 11b is formed continuously from the flange portion 5, and during a late stage of forming, the torsional shape portion 25 is formed into the flange portion 5, and the flange portion 5 is formed in the concave outer edge part 11b so as to achieve formation of a target shape.
Inventors:
Liao
Application Number:
JP2020090158A
Publication Date:
December 15, 2021
Filing Date:
May 23, 2020
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
B21D24/00; B21D19/08; B21D22/26
Domestic Patent References:
| JP61222640A | ||||
| JP60210326A | ||||
| JP59076625A | ||||
| JP6032374B2 |
Foreign References:
| WO2020026356A1 | ||||
| WO2014017436A1 |
Attorney, Agent or Firm:
Toshihiko Ishikawa
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