| 摘要 |
PROBLEM TO BE SOLVED: To provide a spherical body grinder and a spherical body grinding method capable of greatly improving grinding process accuracy and grinding process efficiency for grinding a spherical body workpiece.SOLUTION: First, second, and third grinders 2, 3, and 4 included by a spherical body grinder 1 are disposed so that rotational axes La and Lb are parallel to each other and rotate and, furthermore, the second and third grinders 3 and 4 make differential rotation so as to grind one spherical body workpiece W. As a result, one force toward a center on an outer circumferential surface of the spherical body workpiece W and two forces parallel to the latter force are generated in the spherical body workpiece W, so that the spherical body workpiece W can be stably, appropriately rotated. Furthermore, since the spherical body workpiece W is ground in three portions, chances of contact of the spherical body workpiece W with the first, second, and third grinders 2, 3, and 4 increase and grinding process accuracy and grinding process efficiency for grinding the spherical body workpiece can be greatly improved.SELECTED DRAWING: Figure 2 |
