Automobile part welding tool

The automobile part welding tool comprises a base, a first clamping assembly, a second clamping assembly and a clamping assembly, the first clamping assembly is fixedly installed on the right side of the base, the second clamping assembly is installed on the left side of the base through a lead screw assembly in a mirror symmetry mode, and the clamping assembly comprises an electric push rod, a guide rail, a sliding table, a vertical frame and a clamping jaw. One end of the vertical frame is vertically installed on the sliding table, the other end of the vertical frame is connected with the clamping jaw, the electric push rod is installed on the base, and the output end of the electric push rod is connected with the side portion of the sliding table to drive the sliding table to move back and forth along the guide rail. The movable second clamping assembly is matched with the first clamping assembly to horizontally clamp the steel pipes with different lengths, the applicability is good, the movable clamping a