| 摘要 |
PROBLEM TO BE SOLVED: To provide friction stir welding equipment which can be suitably used for welding each of the members to be joined that are composed of numerous kinds of materials and that are within a large dimensional range. SOLUTION: The equipment is structured in a manner that a tool holder 38 for holding a joining tool 47 is rotationally driven through a speed-changing means 41 by a rotary driving means 40, that the joining tool 47 is thereby rotationally driven around a reference axial line L1 in alignment with the axial line L11 of the tool, and that an object to be joined 95 is stirred in solid phase and the member 95a, 95b to be joined are welded to each other. In addition, between the tool holder 38 and the rotary driving means 40 that rotationally drives the tool holder, the speed-changing means 41 is interposed and changing the rotational speed of the tool holder 38 makes the rotational speed of the joining tool 47 variable. Further, in this equipment, when the rotational speed of the tool holder 38 is varied by the speed-changing means 41, the torque of the tool holder 38 changes with the varied rotational speed, thereby making the output torque of the joining tool 47 changeable. COPYRIGHT: (C)2004,JPO&NCIPI
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