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:
May. 19, 2026
Filed:
Dec. 13, 2022
Jfe Steel Corporation, Tokyo, JP;
Masaki Urabe, Tokyo, JP;
JFE STEEL CORPORATION, Tokyo, JP;
Abstract
A method of evaluating a springback amount of a press formed part includes: obtaining a springback amount of an actual press formed part by giving a predetermined constraint condition to a press formed part workpiece shape model acquired by elastic mechanical analysis including a process of sandwiching the actual press formed part obtained by performing actual press forming and springback up to the forming bottom dead center and performing spring-back analysis; calculating a springback amount by giving the same constraint condition to a press formed part analysis model acquired by elasto-plastic mechanical analysis including a process of press forming the actual press formed part and performing the spring-back analysis; and comparing and evaluating these springback amounts.