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.
Patent No.:
Date of Patent:
Sep. 17, 2019
Filed:
Jan. 23, 2015
Jfe Steel Corporation, Tokyo, JP;
JFE Corporation, Tokyo, JP;
Abstract
There is provided a press forming method capable of suppressing a camber back, which occurs in a hat-shaped member while reducing a restriction on a shape of the hat-shaped member. At a time of the press forming, a blank material () in which a longitudinal line length is at least longer than a longitudinal line length of a top plate portion of a hat-shaped member () is fixed between a pair of press dies (lower die (), upper die ()), which have bent surfaces (convex surface (), concave surface ()), while being warped upward, that is, in a bending direction of the lower die () and the upper die (). Subsequently, for the fixed blank material (), a bent portion of the hat-shaped member () is press formed by using the convex surface () and the concave surface ().