The invention discloses a 
laser visual tracking 
correction method for 
welding of a non-body external shaft of a 
robot. The 
laser visual tracking 
correction method specifically comprises the following steps that S1, before 
welding is started, a power source is turned on, a 
system starts to work, a program starts to run, the position of a 
welding gun at the 
tail end of a 
robot is adjusted through the position searching function of a sensor, and the tip of the welding gun at the 
tail end of the 
robot runs to a current arcing point A1. The invention relates to the technical field of welding 
laser correction. According to the laser visual tracking 
correction method for welding of the non-body external shaft of the robot, the arcing point is searched through the position searching function in the sensor, so that the tip of the welding gun at the 
tail end of the robot runs to the arcing point; compared with a traditional laser visual welding seam 
tracking system, the laser visual welding seam 
tracking system records the position of the robot at the arcing point and the position of the laser at the moment, and the position of the robot is compensated to realize automatic tracking of the welding gun on the welding seam position; and the laser vision welding seam 
tracking system has the advantages that the 
programming quantity is small, the 
system is easy to understand, and only a position searching point needs to be demonstrated.