WELDING METHOD, WELDING UNIT, AND METHOD OF INSTALLING WELDING ROBOT

摘要

PROBLEM TO BE SOLVED: To control the temperature of the back surface of a welding part within a specified heating restriction range.;SOLUTION: In a welding unit 6, welding is carried out two or more times by a welding robot 1 along a plurality of welding passes set in such a way that beads are overlapped over a welding part. The welding is stopped temporarily between the welding along a first welding pass and the welding along a second welding pass, and the welding unit 6 waits until a second start condition determined on the basis of a specified heating restriction is met. The welding along the first welding pass is continued while meeting a first continuation condition determined on the basis of the heating restriction, and the welding along the second welding pass is continued while meeting a second continuation condition determined on the basis of the heating restriction. Since a waiting step between welding passes is thus managed on the basis of the heating restriction and continuation of welding along each welding pass is also managed on the basis of the heating restriction, in each welding along each welding pass, the temperature of the back surface of the welding part is controllable within a specified heating restriction.;COPYRIGHT: (C)2014,JPO&INPIT