| 摘要 |
PROBLEM TO BE SOLVED: To provide a grinder which can form round surfaces of at least two patterns on a workpiece. SOLUTION: The grinder 2 is formed of grinding members 102, 202. The grinding member 102 is formed of a plurality of segments 120, and the grinding member 202 is formed of a plurality of segments 220. Each segment 120 has a grinding surface 140 and a D1-side round surface 130, and each segment 220 has a grinding surface 240 and a D1-side round surface 230. The grinding members 102, 202 are relatively movable so as to assume a first locational relationship in which the workpiece can be ground by the D1-side round surface 130, and a second locational relationship in which the workpiece can be ground by the D2-side round surface 230. Thus the grinder can form the round surfaces of the two patterns on the workpiece. COPYRIGHT: (C)2010,JPO&INPIT |
