Patent ID: 7014528

Claim:
A grinding machine comprising: a work spindle for rotating a workpiece having an eccentric portion; a wheel head mounted for advancing/retracting relative to said workpiece; a grinding wheel carried rotatably by said wheel head and for grinding the eccentric portion of said workpiece; a grinding fluid supply-nozzle for supplying grinding fluid to a moving grinding point where said grinding wheel contacts said eccentric portion of said workpiece by discharging grinding fluid to a position upstream of the moving grinding point, wherein said grinding fluid supply-nozzle is made from a curve portion, an opening and therebetween a straight portion, and wherein the angle between the tangent of said grinding fluid supply point and said grinding fluid spouted from said grinding fluid supply-nozzle is smaller than a right angle; and means for advancing/retracting said wheel head relative to said workpiece in synchronism with movement of said eccentric portion.