The depth of cut and the headstock velocity of a grinding machine are controlled during the last rotation of finish grinding to maintain a substantially constant load on the grinding wheel spindle drive motor. The depth of cut is kept constant and the component speed of rotation is altered in order to maintain the constant power requirement. If the component profile alters the spindle loading during a single revolution, the component speed is altered from one point to another during each revolution so as to maintain the constant load. Headstock acceleration, deceleration, and velocity are controlled to take into account any variation in contact length between the wheel and component during the rotation of the latter, so that although the metal removal rate may vary slightly around the circumference of the component the power demand on the spindle motor is maintained substantially constant during the whole of the grinding of the component.
展开▼
