Patent ID: 9089947
Filing Date: 2015-07-28
Classification: B24B,B24D,F16C

Abstract:
1. A spherical body polishing apparatus for polishing the surface of a spherical body, the apparatus comprising: a first member having a first polishing surface; and a second member having a second polishing surface opposed to said first polishing surface, said first polishing surface and said second polishing surface being capable of rotation relative to each other while being opposed to each other, at least one of said first polishing surface and said second polishing surface having a groove portion formed therein and extending circumferentially along said rotation, at least one of said first member and said second member having said groove portion formed therein including: said groove portion being formed to penetrate said holding layer in a depth direction and to reach said abrasive grain layer, and said groove portion has a bottom portion located within said abrasive grain layer.