Polishing device for drum set column production

The polishing device comprises a polishing table, a cross beam and a control box, a rotating motor is installed on the left side of the bottom end of the polishing table, an output shaft of the rotating motor penetrates through the polishing table and is fixedly provided with a rotating table, a drum cavity is placed on the rotating table, and a stand column is installed on the right side of the upper surface of the polishing table; a rectangular hollowed-out groove A is formed in the stand column, an electric telescopic rod A is installed in the rectangular hollowed-out groove A through two fixing sleeves A, a telescopic column is fixed to the extending end of the electric telescopic rod A, and the telescopic column is installed in the stand column in a sliding mode. One end of the cross beam is welded to the telescopic column, a rectangular hollowed-out groove B is formed in the cross beam, and an electric telescopic rod B is installed in the rectangular hollowed-out groove B through two fixing sleeves B. A