Polishing apparatus, a processing method of the polishing member, modifying the method of the polishing member, cutting tools and surface modification tool for shaping

The present invention aims to provide a polishing apparatus which can easily perform shaping or shape modification of a polishing surface having a different shape from the planar. Polishing apparatus comprises an end portion of the polished workpiece (K) polishing member (10) having a polishing surface conforming to the configuration of (KE), the same shape as the shape of the end portion (KE) cage, end (KE) surface modification tool to shape machining cutting tool or the abrasive surface is processed into a shape along the shape is corrected to a shape along the polishing section shape of the polishing surface of the polishing member (10) comprising a tool (41) which functions, contact mechanism contacting the tool (41) against the polishing surface of the polishing member (10) and (40) as a.