Patent ID: 9597766
Date: 2017-03-21
CPC Classifications: B24B,B24D

Claim:
1. A brush unit to polish a surface of a workpiece to be polished by means of a polishing brush that rotates and revolves in a planetary motion comprising: a polishing brush, wherein tips of a plurality of bristles are exposed from a bottom of the polishing brush; a rotating unit having a revolving unit that is combined with the rotating unit, the revolving unit having a mechanism for a revolution that rotates so as to revolve the polishing brush, a mechanism for driving the revolution that generates a force for the revolution to revolve the polishing brush, and a mechanism for transmitting the force for the revolution that transmits the force for the revolution to the mechanism for driving the revolution, wherein the rotating unit further comprises a mechanism for adjusting brush feed that can adjust the brush feed to force the polishing brush against the workpiece, wherein the revolving unit comprises a disc-shaped revolving plate that is located at an outer side of the center of the brush unit, wherein the revolving olate engages the mechanism for rotation to allow the mechanism for rotation to swing, and a mechanism for controlling an angle to swing that controls the angle that the mechanism for rotation swings.