The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jul. 06, 2021

Filed:

Jul. 25, 2018
Applicant:

Jfe Steel Corporation, Tokyo, JP;

Inventors:

Shunsuke Tobita, Tokyo, JP;

Toyohisa Shinmiya, Tokyo, JP;

Yuji Yamasaki, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21D 5/01 (2006.01); B21D 22/02 (2006.01); B21D 22/26 (2006.01); B21D 22/30 (2006.01); B21D 24/00 (2006.01);
U.S. Cl.
CPC ...
B21D 5/01 (2013.01); B21D 22/02 (2013.01); B21D 22/26 (2013.01); B21D 22/30 (2013.01); B21D 24/005 (2013.01);
Abstract

A method for manufacturing a press formed product is disclosed. The method for manufacturing a press formed product includes: when a metal sheet is press formed to manufacture a product having a product shape of a hat-shaped cross-section, in which a top plate part and a flange part are continuous in a width direction through a side wall part and the top plate part and the flange part curve convexly or concavely toward the top plate part along a longitudinal direction, a first step of manufacturing an intermediate component by press forming into a component shape having a hat-shaped cross-section, in which a curve of each of the top plate part and the flange part along the longitudinal direction has a second curvature radius smaller than a curvature radius in the product shape; and a second step of press forming the intermediate component into the product shape.


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