Part clamping and polishing device

The utility model belongs to the technical field of hardware part polishing, and particularly relates to a part clamping and polishing device which comprises a bottom plate, a protective cover is fixedly arranged on the upper side wall of the bottom plate, symmetrical protective plates are rotatably arranged at the front end of the protective cover, and an annular plate is arranged at the upper end of the bottom plate. Supporting plates are fixedly arranged on the front side wall and the rear side wall of the annular plate correspondingly, the lower side walls of the two supporting plates are fixedly connected with the upper side wall of the bottom plate correspondingly, steel pipes of different thicknesses can be clamped and fixed conveniently, and through joint cooperation of a clamping disc, a clamping block, a U-shaped plate and an adjusting mechanism, after the steel pipes of different thicknesses are clamped, the steel pipes of different thicknesses can be clamped conveniently. And in the transverse mov