Ball cage polishing device

The utility model discloses a ball cage polishing device which comprises a machine tool and a box body, the box body is arranged in the machine tool, a polishing assembly for automatically and efficiently polishing a ball cage is arranged on the machine tool, a supporting assembly is further arranged on the machine tool, and the supporting assembly can stably support the ball cage. According to the method, automatic grinding pieces are symmetrically arranged on a machine tool, manual participation is not needed, the positions of the two grinding pieces are automatically adjusted at the same time, the ball cage is ground at the same time, the automatic rotating grinding efficiency of the ball cage is improved, and a transparent protection plate is arranged on the machine tool, so that the grinding state of the ball cage can be observed; and the chippings are blocked, so that the chippings are concentrated together, and the problems that the chippings are splashed and the machine tool is not easy to clean are s