Patent ID: 7273412

Claim:
An abrasive wheel with improved composing structure, which comprises: an abrasive component having a combining hole and an abrasive segment circling an outer periphery of said combining hole; an adapting ring received in the combining hole of the abrasive component, said adapting ring having an inner wall circling the combining hole and two mounting surfaces respectively disposed on opposing sides thereof; two covers respectively posited adjacent each mounting surface of the adapting ring, wherein each cover has a surface facing a corresponding mounting surface of the adapting ring, each cover has a pressing segment and a blocking segment, wherein said pressing segment circles an outer periphery of said blocking segment and includes a plurality of teeth, the blocking segment presses on the inner wall of the adapting ring and the teeth of the pressing segment press on the corresponding mounting surface; and a plurality of raised columns extending from the surface of each cover facing the corresponding mounting surface of the adapting ring in spaced angular relationship, a plurality of openings being respectively disposed between said plurality of raised columns, said openings being respectively shaped complementary to a shape of the raised columns, whereby after the abrasive wheel is assembled, the raised columns of each said cover are respectively engaged in the openings of the other cover.