The Character of Regenerative Chatter in Cylindrical Grinding

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Abstract
The steady state regenerative response of a cylindrical grinder is found. The goal of the work is to characterize chatter and find ways to monitor grinding performance. It is shown that the wheel-workpiece coupling stiffness and thus the theoretical tendency to chatter is less for a climb cut than for a normal cut. The existence and precession of both wheel and workpiece lobes is discussed. When chatter disappears the lobes become essentially equal in height. In this case a rough surface can be generated in the absence of chatter. The ratio of the lobe precession rates is indicative of the grinding ratio. The easily monitored precession therefore provides an in-process measure of grinding performance.

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