Polishing device for high-flatness spool machining

The utility model discloses a polishing device for processing a high-flatness spool, which belongs to the technical field of machining devices and comprises a base station, a polishing mechanism is mounted on the base station through a support, the spool is placed on the base station below the output end of the polishing mechanism, and a fixing mechanism is connected to the base station. The fixing mechanism comprises sliding blocks, a fixing frame and a threaded rod, the two sliding blocks are symmetrically connected to the base table in a sliding mode, the threaded rod is rotated to drive the two sliding blocks to move oppositely, and the fixing frame on the sliding blocks can conveniently clamp and fix a middle shaft of a spool; and through the driving assembly, when the sliding block moves, the movement distance of the fixing frames is two times of the movement distance of the sliding block, the fixing range of the two fixing frames is widened, the rotating operation of the threaded rod is reduced, and th