Patent ID: 8257151

Claim:
A polishing device, comprising: an outer barrel defining a chamber therein and comprising a plurality of inner surfaces, the inner surfaces being substantially parallel to a central axis of the outer barrel, each of the inner surfaces defining a holding groove therein for holding a workpiece; an inner barrel received in the chamber and comprising a first side surface, the side surface being substantially parallel to the central axis and defining a plurality of installation grooves; a plurality of polishing members, each of the polishing members installed in a corresponding one of the installation grooves and comprising an elastic piece, a polishing motor connected to a bottom wall of the corresponding installation groove by the elastic piece and received in the corresponding installation groove, and a polishing plate connected to the polishing motor and capable of being rotated by the polishing motor; and an actuator configured for driving the outer barrel to spin with respect to the central axis and move back and forth along the central axis.