Cup-type grinding wheel.

摘要

A cup-type grinding wheel comprising an annular-shaped grinding body (11) eccentrically mounted on a wheel spindle stock (18) having a coaxis (23) with a non-eccentric rotary axis (22). In this way, only the grinding body (11) is eccentrically rotated to flatly grind the whole grinding surface without producing a projection (hitherto 20) at the central portion of a workpiece (12) to be ground.