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1. (WO2006126475) POLISHING TOOL

Pub. No.:    WO/2006/126475    International Application No.:    PCT/JP2006/310122
Publication Date: Nov 30, 2006 International Filing Date: May 22, 2006
IPC: B24B 23/04
Applicants: NITTO KOHKI CO., LTD.
福田 健治
Inventors: FUKUDA, Kenji
福田 健治
A polishing tool enabling the wide portion of its polishing surface to come into surface contact with a polished surface when a corner portion is polished and a reduction in impact even if a polishing member hits a member therearound. The generally triangular polishing member (18) with an apex angle of 60° is connected to a rocking and vibrating shaft (12) rocked and vibrated by a motor (13) through a vibration transmitting member (30) formed of a plate-like spring member. The vibration transmitting member (30) comprises a triangular base part (24) having, at its center, a fixing hole (22) for fittedly fixing the triangular base part to the rocking and vibrating shaft and triangular polishing member holding portions (26) extended from the sides of the triangular base part. The polishing member (18) comprises three polishing pieces (20) held by a polishing piece holding member and formed of pads (32) and polishing sheets (36) laminated on the pads. The edges of the polishing pieces are extended to the outside of the edges (16-1) of the polishing member holding portions (26).