Welding tool for automobile rear auxiliary frame cross beam combination

The invention relates to the technical field of automobile beam welding, in particular to a welding tool for an automobile rear auxiliary frame beam combination, which comprises a tool table, and a positioning and clamping mechanism and a welding mechanism are arranged at the top of the tool table. According to the welding tool for the automobile rear auxiliary frame cross beam combination, the positioning and clamping mechanism is matched with the welding mechanism, so that two pipe fittings in a cross beam can be positioned and aligned with triangular connecting strips, and when the welding mechanism moves downwards to weld the cross beam, two moving guide sets are matched with two guide grooves correspondingly, so that the cross beam is welded, and the welding efficiency is improved. According to the triangular connecting strip welding machine, the movable guide sets are arranged, the welding moving track of the welding machine is guided, the movable guide sets and the guide grooves are mutually locked and