Title:
PRESS FORMING METHOD AND METHOD OF MANUFACTURING PRESS FORMED PRODUCT
Document Type and Number:
Japanese Patent JP2023180200
Kind Code:
A
Abstract:
To provide a press forming method which does not require a trimming step after press forming, which sufficiently suppresses wrinkles generating by a shrink flange deformation, and which can be applied to bending forming, and to provide a method of manufacturing a press formed product.SOLUTION: A press forming method and a method of manufacturing a press formed product are for forming a press formed product 1 including a top plate part 3 having a convex outer peripheral edge part 3a in which an outer peripheral edge or part of it is bent in a convex manner outward, and a vertical wall part 5 connected to the top plate part 3. The press forming method and the method of manufacturing the press formed product include: a first forming step of forming a metal plate into an intermediate formed product 15; and a second forming step of forming the intermediate formed product 15 formed in the first forming step into a press formed product 1 of a target shape. In the intermediate formed product 15, at least an angle formed by the top plate part 3 of a portion corresponding to the convex outer peripheral edge part 3a of the top plate part 3 and a vertical wall part 25 is larger than an angle formed by the top plate part 3 of the press formed product 1 of a target shaped and the vertical wall part 5.SELECTED DRAWING: Figure 1
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Inventors:
TOBITA SHUNSUKE
Application Number:
JP2022165325A
Publication Date:
December 20, 2023
Filing Date:
October 14, 2022
Export Citation:
Assignee:
JFE STEEL CORP
International Classes:
B21D22/26; B21D22/20
Attorney, Agent or Firm:
Toshihiko Ishikawa
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