| 摘要 |
PURPOSE: A device for welding inner periphery of a tube type metal is provided to achieve continuous and stable welding of an inner periphery of a tube type welding metal for a long time by using a rotating chuck and a welding holder associated with the chuck. CONSTITUTION: A device for welding inner periphery of a tube type metal includes a driving motor(3) mounted in the center of a frame(1), a first pulley(6) mounted at a rear upper part of the frame(1) for rotating by the rotation power from the driving motor(3), a second pulley(7) mounted at a center upper part of the frame(1) for rotating in association with the first pulley, a rotation shaft(9) mounted with a chuck(10) for chucking a tube type metal workpiece to be welded, a screw rotation shaft(13) horizontally mounted at a front upper part of the frame and having a rotation pulley(11) and a screw(12), the screw(12) being mounted with a bracket(14) spirally inserted into an end of the screw(12) and a welding holder feeding bar(16) having an element(15) for fixing a welding holder(17) at the other end of the screw(12), and a roller(18) for supporting the workpiece chucked by the chuck(10).
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