BARREL-POLISHING POLISHING BODY, BARREL POLISHING METHOD, AND MANUFACTURING METHOD FOR THIS POLISHING BODY

PROBLEM TO BE SOLVED: To provide a barrel-poling polishing body having a high cutting capability without more roughening the surface of a workpiece than necessary in a barrel-polishing polishing body.SOLUTION: A polishing body M is a sinter body where polishing material particles G are coupled with one another by a coupling body B formed by the fusion or semi-fusion of particles of the same quality. The main component of the coupling body B is a material different from that of the polishing material particle G, and the rigidity of the coupling body B is lower than that of the polishing material particle G. A polishing method by this polishing body M includes a step where the polishing body M comes in contact with a workpiece, a step where the coupling body B absorbs the collision energy upon the contact of the polishing body M with the workpiece, and where the polishing material particles G cut the workpiece, and a step where the polishing material particles G located on the outer surface of the polishing body M are desorbed.SELECTED DRAWING: Figure 5 【課題】バレル研磨用の研磨体において、被加工物を必要以上に粗面化することなく、高い切削能力を有するバレル研磨用の研磨体を提供する。【解決手段】研磨体Ｍは同質の粒子が溶融または半溶融して形成された結合体Ｂによって研磨材粒子Ｇ同士が結合している焼結体である。結合体Ｂの主成分は研磨材粒子Ｇと異なる材質であり、結合体Ｂの硬度は研磨材粒子Ｇの硬度よりも低い。そして、この研磨体Ｍによる研磨方法は、研磨体Ｍが被加工物に接触する工程と、研磨体Ｍが前記被加工物に接触する際の衝突エネルギーを結合体Ｂが吸収すると共に研磨材粒子Ｇによりが被加工物を切削する工程と、研磨体Ｍの外表面に位置する研磨材粒子Ｇが脱離する工程と、を含む【選択図】図５