| 摘要 |
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.
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