METHOD FOR CHECKING DEFORMATION OF TORCH IN ROBOT FOR ARC WELDING

摘要

PURPOSE:To improve the accuracy and operability in checking the deformation of a torch by guiding automatically the torch over a sensor provided on a checking stage so that the presence or absence of the deformation is checked by the sensor, and correcting the deformation by manpower only when needed then resetting the torch to the welding operation. CONSTITUTION:A sensor 3 is provided to face upward on the frame 2 of a pedestal 1, and a cord 5 is connected to a switch for checking the deformation of a torch, thereby constituting a checking stage A. Said stage is provided near a robot. When the set number of welding by the robot is counted up, the tip 7 of the torch is guided over the sensor 3 and a wire 8 is positioned oppositely thereto. The tip 7 is lowered onto the sensor 3 by a teaching operation. When the contact of the wire 8 can be detected by such operation, the robot is reset to the welding operation and when the deformation of the torch is checked from the absence of the contact, the robot is stopped, and the deformation is corrected by manpower, whereafter the robot is reset to the operation. The accuracy in checking the deformation of the torch is thus improved and welding is stabilized.