Clamping mechanism for automobile welding fixture

The clamping mechanism for the automobile welding clamp comprises a supporting table, a supporting frame, a part fixing assembly, a rotating table, a rotating motor and a clamping assembly, the supporting frame is arranged on the supporting table, the rotating table is rotationally arranged on the upper middle portion of the supporting table and located in the supporting frame, the rotating motor is arranged on the lower middle portion of the supporting table, and the clamping assembly is arranged on the supporting frame. An output shaft of the rotating motor is connected with the rotating table, the part fixing assembly is arranged on the rotating table, the clamping assemblies are symmetrically arranged on the two sides of the upper end of the part fixing assembly, and the part fixing assembly comprises a part containing table, a threaded rod, a forward and reverse rotating motor, a threaded block and a supporting rod. The utility model relates to the technical field of automobile part machining equipment,