Abstract
The workpiece rounding mechanism in centerless grinding is very much complicated compared to that in cylindrical grinding. Even a very small disturbance such as irregularity on the grinding wheel or the regulating wheel circumference, which makes the depth of cut at grinding point to change, may causes significant workpiece roundness deterioration in a centerless grinding operation. To minimize the effect of disturbance on the roundness, this paper investigates the mechanism of roundness deteriorating action analytically and determines the roundness error caused by disturbance quantitatively. It is found that the roundness deterioration can be avoided by controlling the ratio of grinding wheel and workpiece rotational speed.
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