Method for controlling welding gun track in automatic fillet weld welding

The invention relates to a method for controlling a welding gun track in automatic fillet weld welding, which comprises the following steps: starting welding, acquiring and recording welding current of a welding gun at a welding gun track endpoint position I, a welding gun track endpoint position II and a welding gun track center position in real time by a special welding machine; at the end of the set time window, the accumulated current value is divided by the total number of times of obtaining the real-time current in the set time window, and instant average welding current at the three positions at the end of the set time window is obtained and recorded; calculating an instant average welding current difference I and an instant welding current difference II; when the first instant average welding current difference is larger than a first preset value and the second instant average welding current difference is larger than a second preset value, the position of a welding gun is adjusted; and repeating unti