Patent ID: 6729938
Filing Date: 2004-05-04
Classification: B23Q,B24B

Abstract:
A centerless grinder which comprises: a bed; a grinding wheel spindle stock and a regulating wheel spindle stock disposed on the bed in opposed relation; a work rest fixed onto the bed between the grinding wheel spindle stock and the regulating wheel spindle stock for supporting a workpiece between the grinding wheel spindle stock and the regulating wheel spindle stock; at least one of the grinding wheel spindle stock and the regulating wheel spindle stock serving as a feedable wheel spindle stock which is movable in a direction toward and away from the other wheel spindle stock; and a feed device for moving the feedable wheel spindle stock in the direction, wherein the feed device comprises:a feed screw having one end fixed onto the bed between the grinding wheel spindle stock and the regulating wheel spindle stock, and disposed as extending in the direction of the movement; a nut retained in the feedable wheel spindle stock in threading engagement with the feed screw so that an axial movement thereof along the feed screw is restricted and a rotational movement thereof about an axis thereof is permitted; and a driving motor for rotating the nut about the axis thereof.