POSITION SHIFT CORRECTING SYSTEM OF WELDING ROBOT

摘要

PURPOSE:To provide the titled position shift correcting system by detecting the shifting quantity from the standard position of a work position with utilizing the detecting means to detect the work position from the electrifying condition between a welding torch and work and by enabling to correct suitably the taught welding line. CONSTITUTION:The position shift correcting system 1 of said welding robot is composed of an articulated robot 2 and the welding torch 4 fitted to the wrist part 3 of the robot 2 and a control means 5 and is to weld a work W. The means 5 memorizes the position data of the standard welding line in the work W being placed on a standard position by the electric circuit having a microcomputor as its center, also equips the detecting function to detect by a short circuit current whether the tip 4a of the torch 4 touches the work W or not. The means 5 provides further the position shift correcting function to motion as shown in figures a, b. Due to the taught welding line being corrected with setting to the position shift therefore even when the position of the actual work W position is shifted from the prescribed standard position, the welding can be performed correctly along the necessary welding line.