Patent ID: 9358655
Filing Date: 2016-06-07
CPC Classification: B24B,H01L

Claim Text:
1. An outer periphery polishing apparatus configured to polish a sloped edge formed on an outer periphery of a front surface and a rear surface of a disk-shaped workpiece, the outer periphery polishing apparatus comprising: a chucking device configured to retain the workpiece and rotate the workpiece about an axial line; and a front surface edge polishing unit and a rear surface edge polishing unit respectively configured to polish the edge of the front surface and the rear surface of the workpiece with an arcuate working surface of a polishing member, wherein the front surface edge polishing unit and the rear surface edge polishing unit each include a polishing member mounting structure to which the polishing member is replaceably attached; a mounting structure support unit that tiltably supports the polishing member mounting structure; a mounting structure angle adjustment mechanism that adjusts a tilt angle of the polishing member mounting structure such that the working surface of the polishing member becomes parallel to the edge of the workpiece; a load applying device that presses the working surface of the polishing member against the edge of the workpiece thereby applying a polishing load; a reciprocation support base that supports the mounting structure support unit so as to move along a straight line inclined with respect to the axial line; a reciprocation mechanism that causes the mounting structure support unit to reciprocate along the straight line, a base support unit that tiltably supports the reciprocation support base; a base angle adjustment mechanism that adjusts a tilt angle of the reciprocation support base such that the straight line becomes parallel to the edge of the workpiece; and a pedestal that supports the base support unit so as to allow positional correction in a vertical direction and a horizontal direction.