SUPERFINISHING DEVICE, SUPERFINISHING METHOD, AND OUTER RACE OF BEARING WITH SUPERFINISHED RACEWAY SURFACE

摘要

Provided are a superfinishing device that can perform a uniform axial direction finishing of the logarithmic crowning surface formed on the inner circumferential surface of a circular member in a short time, a superfinishing method, and an outer race of a bearing having a raceway surface that has been superfinished using said superfinishing method. The superfinishing device (1) is provided with a reciprocating linear movement mechanism (40) that reciprocally moves a grindstone (3), which is held in a pressing part (30), linearly in a direction (C), which is slanted by a constant angle φ with respect to the central axis (O) of the outer race (10) along a surface (B) that contacts the logarithmic crowning surface generating line.