| 摘要 |
PURPOSE:To decrease stages for assembling parts and to make the titled holder adaptable to production of many kinds and small quantity by providing supporting means for vertically moving and swiveling the material to be welded by supporting the other end in the longitudinal direction of a material to be welded, thereby welding many tack-welded parts simultaneously. CONSTITUTION:A robot 30 for changing posture mates a chuck mechanism 40 at the end of an arm 39 with a swing arm supporting rod W3 of a frame W carried thereto to grip the frame. The respective parts tack-welded to the frame W are welded in this state by welding robots 2, 2 from the side part of the frame W. The 3rd driving motor 42 is first driven to raise the rear side of the frame W and to disengage the same from a receiving base 21 when a welding torch 3 can no longer advance. A swiveling arm 39 is then turned by the 2nd driving motor 38. The frame W is rotated around the axial center thereof and while the frame W is displaced to the posture easy for the welding robot 2 to make welding, the require welding operations are carried out.
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