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:
Dec. 10, 2024
Filed:
Feb. 27, 2020
Mitsubishi Electric Corporation, Tokyo, JP;
Osaka University, Suita, JP;
Tetsuya Amasaki, Osaka, JP;
Hidetoshi Fujii, Osaka, JP;
Keisuke Murase, Tokyo, JP;
Seiiyu Ishimoto, Tokyo, JP;
Takuya Ikeda, Tokyo, JP;
Muneaki Mukuda, Tokyo, JP;
Takushi Takizawa, Tokyo, JP;
Naohiko Harada, Tokyo, JP;
Shigenobu Tochiyama, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
OSAKA UNIVERSITY, Osaka, JP;
Abstract
A pressure receiving surface inclined to a rotation axis is provided on the side surface of a stir probe of a rotating tool. The pressure receiving surface includes a pressure receiving region which is always perpendicular to a rotation tangential direction in a cross section perpendicular to the rotation axis. In friction stir processing, the stir probe is caused to rotate in a rotation direction B in which the normal direction of the pressure receiving surface is positive. According to this kind of rotating tool, as it has no shoulder, a joint width does not increase even when a stirring region is deep, and also, a plastic flow in a rotation direction is generated by a pressure receiving surface, so that it is possible to reduce the proportion of the plastic flow in the rotation axis direction, and thus possible to suppress an occurrence of burr.