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. 13, 2008
Filed:
Oct. 17, 2002
Yasuhide Nagao, Kobe, JP;
Yasuhide Nagao, Kobe, JP;
Kawasaki Jukogyo Kabushiki Kaisha, Kobe-shi, Hyogo, 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 (L) and is rotated by a rotation drive motor () about the axis-of-rotation (L). 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 memberare coupled together through a bracket (). Therefore, when the surrounding shaft () is rotated about the axis-of-rotation (L) 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.