Interference avoidance method for welding equipment and control device for welding equipment

The present invention comprises: a reference parallel line generation step for generating a pair of parallel lines which are located on an extended plane of a workpiece cross-section, are tangent to the outer edge of the workpiece cross-section, and do not pass through the workpiece cross-section; a first determination step of comparing the width of the pair of parallel lines generated in the reference parallel line generation step with the maximum separation threshold value of the welding electrode, and determining whether the maximum separation threshold value is greater than the width of the parallel lines; and a drawing direction determination step for determining the direction of the parallel line as a drawing direction when the maximum separation threshold value is greater than the width of the parallel line in the first determination step. 本发明包括：基准平行线生成工序，生成一对平行线，所述一对平行线位于工件截面的延长平面上，且与工件截面的外缘相切而不穿过工件截面；第一判断工序，将在基准平行线生成工序中生成的一对平行线的宽度与焊接电极的最大分离阈值进行比较，判断最大分离阈值是否大于平行线的宽度；以及抽拉方向确定工序，当在第一判断工序中所述最大分离阈值大于平行线的宽