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:
Aug. 18, 2009
Filed:
Mar. 19, 2008
Yasuhide Nagao, Kobe, JP;
Yasuhide Nagao, Kobe, JP;
Kawasaki Jukogyo Kabushiki Kaisha, Kobe, JP;
Abstract
A friction stir welding apparatus capable of stably applying a pressure force without enlarging the apparatus, and a robot having thereof are provided. A rotating tool is provided with a rotational shaft and a hollow surrounding shaft is provided to surround the rotational shaft. The rotational shaft is movable along an axis-of-rotation and is rotated by a rotation drive motor about the axis-of-rotation. The surrounding shaft is rotatably supported by a main frame and an outer threaded portion is formed around the outer peripheral thereof to be threadedly engaged with a nut member. The rotating tool is rotatably supported by a header, and the header and the nut member are coupled together through a bracket. Therefore, when the surrounding shaft is rotated about the axis-of-rotation by the linear movement motor, the rotating tool is linearly moved through the nut member, the bracket and the header, and can apply a pressure force against work pieces.