Patent ID: 7530882

Claim:
A grinding machine for grinding a workpiece having a cylindrical part and a pair of end faces at the sides of the cylindrical part, comprising: a grinding stone of a grinding wheel having a predetermined finishing width in a dimension between the end faces; a head stock adapted to support the workpiece rotatably about a rotational axis; a wheel head adapted to support the grinding wheel rotatably about a rotational axis parallel to the rotational axis of the workpiece; drive units adapted to move the head stock and the wheel head relatively parallel to and perpendicular to the rotational axis of the workpiece; and control means for first moving the grinding wheel to the cylindrical part and simultaneously shuttling the grinding wheel at least one time between the finishing width of the end faces in a first grinding step, and for subsequently moving the grinding wheel from one of the end faces to the opposite end face on the cylindrical part in a second grinding step, wherein a shuttling width of the grinding wheel along the rotational axis of the workpiece gradually increases in the first grinding step.