Polishing device for automobile parts

The utility model relates to a polishing device for automobile parts, which comprises a polishing machine body and is provided with a lifting carriage, a rotary adjusting assembly is arranged at the lifting end of the lifting carriage, a switching box is arranged at the rotary end of the rotary adjusting assembly, a polishing head and a polishing disc are arranged on the outer side of the switching box, and a plurality of butt joint pieces are movably connected in the switching box. The outer end of the butt joint piece is connected with a grinding head and a grinding disc, a switching disc is rotationally connected into the switching box, a first telescopic piece is arranged on the outer side of the switching disc, a first driving motor is arranged at the telescopic end of the first telescopic piece, and a clamping assembly capable of being matched with the butt joint piece in a clamped mode is assembled at the output end of the first driving motor. A driving assembly capable of driving the switching disc to