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:
Feb. 10, 2015
Filed:
Mar. 16, 2012
Hideki Okada, Kakamigahara, JP;
Hajime Kashiki, Kobe, JP;
Kazumi Fukuhara, Aakashi, JP;
Mitsuo Fujimoto, Kobe, JP;
Hideki Okada, Kakamigahara, JP;
Hajime Kashiki, Kobe, JP;
Kazumi Fukuhara, Aakashi, JP;
Mitsuo Fujimoto, Kobe, JP;
Kawasaki Jukogyo Kabushiki Kaisha, Hyogo, JP;
Abstract
A tool driving section of a friction stir spot welding device is configured to cause each of a pin member and a shoulder member to advance and retract, and is controlled by a tool driving control section. A press-fit reference point setting section sets a position where the pin member or the shoulder member contacts an object to be welded as a press-fit reference point, and the tool driving control section controls the position of the pin member with respect to the shoulder member on the basis of the press-fit reference point, thereby controlling the press-fit depth of a rotating tool press-fitted from the surface of the object to be welded. This achieves the excellent welding quality at suitable precision according to welding conditions especially in a double-acting friction stir spot welding method.