| 摘要 |
PURPOSE:To simultaneously weld plural parts, and to efficiently execute a welding work, by load-providing plural running trucks to which a freely liftable and turnable spot welding gun has been fitted so as to be capable of running longitudinally, on 2 pairs of parallel rails provided on a frame. CONSTITUTION:Plural running trucks 24 are load-provided so as to be capable of running longitudinally, on 2 pairs of parallel rails 21 provided on a frame 9. Also, as for said running truck 24, a spot welding gun 11 is suspended so as to be freely runnable in the lateral direction, so that a welding end 10 can be lifted and turned. Subsequently, a frame 2 is fixed by a holding tool 80, and each junction part of the frame 2 is welded. In this way, plural junction parts of the frame 2 are welded simultaneously, and the gun 11 moves freely and the frame welding work is executed efficiently. |
