WELDING METHOD FOR TWO TUBULAR MEMBERS TO MAIN CYLINDRICAL MEMBER WITH LENGTH VARIANCE IN AXIAL DIRECTION AT SAME TIME

摘要

PURPOSE:To improve welding efficiency by welding a tubular member to one end of a main cylindrical member while rotating the tubular member and at the same time, welding the tubular member to the other end of the main cylindrical member while adjusting the position of a welding torch by an action of a movable positioning block. CONSTITUTION:The upper part of the movable positioning block 6 is moved via the elastic force of a spring 7. A supporting frame 9 and a torch supporting frame 13 are pushed up by a torch relief rod 11 and the welding torch 15 is moved to the position suitable for welding to perform the welding. The welding work can be automatized and speeded up and the welding accuracy can be improved by this method.