Patent ID: 9592583
Date: 2017-03-14
CPC Classifications: B24B

Claim:
1. A polishing brush comprising: a brush body that includes a cylindrical base section and linear abrasive materials extending from a bottom surface of one side of the base section along a direction of a center of an axis of the base section, and removes burrs and performs polishing on a surface of a workpiece metal by relatively moving the abrasive materials and the workpiece metal while tips of the abrasive materials come into contact with a surface of the workpiece metal; a brush guide that is coaxial with the center of the axis and is disposed on an outside of the brush body in a radial direction so that the tips of the abrasive materials protrude from an end portion; a displacement mechanism that changes protruding lengths of the abrasive materials from the end portion; an accommodation portion that accommodates the displacement mechanism; and a gear mechanism that gives a rotational power to the displacement mechanism, the gear mechanism being exposed to an outside from an opening formed in the accommodation portion, wherein the rotational power changes protruding lengths of the abrasive materials.