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. 08, 2018
Filed:
Jan. 16, 2013
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Shigeru Uchiyama, Tokyo, JP;
Yasuharu Tanaka, Tokyo, JP;
Takashi Miyagi, Tokyo, JP;
Misao Ogawa, Tokyo, JP;
NIPPON STEEL & SUMITOMO METAL CORPORATION, Tokyo, JP;
Abstract
A press-forming method which press-forms a final shaped article which comprises a top sheet part, vertical wall parts, and flange parts and which has at least one bent part in a longitudinal direction, which method forms the top sheet part, vertical wall parts, bent part, and flange parts, includes a first shaping process of bending a flange part at an intersecting part until an angle of the flange part with a horizontal line becomes αin a plane which includes a horizontal line which connects an intersecting part of a vertical wall part and a flange part and a center of curvature of the bent part and which is vertical to the high strength steel sheet and a second shaping process of additionally bending the flange part after the first shaping process at the intersecting part until the angle of the flange part with the horizontal line becomes αin that plane, makes the additional bending angle β of α-αpredetermined ranges, and thereby reduces the warping and torsion of the final shaped article.