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:
Jul. 18, 2017
Filed:
May. 29, 2012
Tatsuro Katsumura, Aichi, JP;
Noritsugu Itakura, Tokyo, JP;
Seiichiro Nambu, Chengdu, CN;
Kazutoshi Ishikawa, Aichi, JP;
Tatsuro Katsumura, Aichi, JP;
Noritsugu Itakura, Tokyo, JP;
Seiichiro Nambu, Chengdu, CN;
Kazutoshi Ishikawa, Aichi, JP;
JFE Steel Corporation, , JP;
Abstract
Through a tube expanding processing simulation, a workpiece shape in a state where a tip of a workpiecehas advanced by 1.0 m or more after passing through a shoulder portionof a toolis evaluated. A hollow piece shape and a tool shape such that the external diameter is within ±1% of the target, the thickness is within ±7.5% of the target, and the internal gap between the hollow piece and the tool is 1.0 mm or less are obtained by repeated calculation, and thereby actual tube expanding manufacturing conditions are determined.