Title:
プレス成形品の製造方法およびプレス成形装置、プレス成形ライン
Document Type and Number:
Japanese Patent JP7319568
Kind Code:
B2
Abstract:
A manufacturing method of a press forming product, includes: constraining a first face of an intermediate formed product, the intermediate formed product including the first face, a raised face, and a first ridgeline located between the first face and the raised face, and performing flange forming of press forming the raised face into a second face, a flange, and a second ridgeline located between the second face and the flange, wherein: the first ridgeline extends while being convexly curved in a direction from the raised face toward the first face, and the second ridgeline extends while being convexly curved in a direction from the flange toward the second face, viewed from a press direction of the press forming; a convex direction of the first ridgeline in a cross section along the press direction intersecting with the first ridgeline and a convex direction of the second ridgeline in a cross section along the press direction intersecting with the second ridgeline are on the same side; a curvature radius, on a straight line orthogonal to the second ridgeline, in an extending direction of the first ridgeline at an intersection with the straight line in the intermediate formed product is larger than a curvature radius in an extending direction of the second ridgeline on the straight line after the flange forming step; and an angle formed by the second face at a position corresponding to the first ridgeline after the flange forming step is larger than an angle formed by the raised face and the first face which are adjacent to the first ridgeline in the intermediate formed product.
Inventors:
Sonobe Aoma
Satoshi Shirakami
Takashi Ariga
Satoshi Shirakami
Takashi Ariga
Application Number:
JP2021565657A
Publication Date:
August 02, 2023
Filing Date:
December 17, 2020
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
B21D22/26; B21D24/00; B21D28/00
Domestic Patent References:
| JP5636846B2 | ||||
| JP9174166A | ||||
| JP5510533B1 | ||||
| JP2015100812A |
Attorney, Agent or Firm:
Koji Hagiwara
Tetsuo Kanemoto
Naoki Ogita
Takashi Saito
Takuya Mine
Tetsuo Kanemoto
Naoki Ogita
Takashi Saito
Takuya Mine
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