| 摘要 |
PROBLEM TO BE SOLVED: To grind a curved surface shape processing surface without changing the slant angle of a tool. SOLUTION: A columnar polishing tool is made by providing a coaxial rotary shaft 3 on a flexible columnar body and a cylindrical curved surface 4a of a work 4 fixed by a bottom surface 4b is ground in an arrow mark R direction while keeping the slant angleθof the rotary shaft 3 to a constant in a state bent the columnar polishing tool 1. At the processing order positions of the arrow mark R direction (a), (b), (c), the bigness of bending of the columnar tool 2 is enlarged in order in order to make the slant angle to a constant. Meantime, the angle between the normal line of a processed surface 4a and the cylindrical surface of the columnar tool 2 at either processing point Mp of (a), (b), (c) is made to a right angle.
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