Polishing device for mechanical part production

The utility model provides a polishing device for mechanical part production, which comprises a workbench, a controller arranged on the side wall of the workbench, a collecting box arranged at the top of the workbench in a penetrating manner, a filter screen arranged at the top of the collecting box, fixing plates arranged on two sides of the top of the workbench along the length direction of the collecting box, and a translation assembly arranged at the bottom of the fixing plates on the top of the workbench. A lifting assembly is arranged in the fixing plate, a mounting plate is arranged on the side wall of the lifting assembly, sliding clamping grooves are formed in the top and the bottom of the mounting plate, clamping assemblies are clamped to the sliding clamping grooves, a set of electric telescopic rods are arranged on the top of the workbench in the width direction of the collecting box, fixing blocks are fixedly connected to the tops of the electric telescopic rods, and moving assemblies are arrange