| 摘要 |
PROBLEM TO BE SOLVED: To provide a friction stir spot joining device that has a simple structure, light weight, and general applicability, that is sure in moving the unit, and that facilitates exchange of components, by unitizing stirring-related members and forming an opening in a friction stir spot joining device body for housing it. SOLUTION: The friction stir spot joining device is equipped with a stirring motor 10 and a pressurizing motor 7, with a stirring unit formed by unitizing the stirring motor, a stirring shaft 13, and a power transmission mechanism 14 between the stirring shaft and the stirring motor, wherein the stirring shaft 13 has a pin 1 at the tip end, supported with a bearing 11, and provided in the center with a hole 12 for housing a screw shaft 9. Bearings 19 of an LM guide are fixed to the stirring unit immediately under the stirring unit, a nut 16 is fixed to the back face of the stirring unit, and the rail 21 of the LM guide is fixed, wherein the joining device body 6 is opened to form the opening at a rear upper portion through which the stirring unit is caused to move inside thereof. The pressurizing motor is fixed to the rear end of the joining device body, and a screw shaft linked to the pressurizing motor is screwed onto the nut in the back face of the stirring unit, so that the stirring unit is made to move forward and backward. COPYRIGHT: (C)2009,JPO&INPIT
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