Abstract
The roundness of a plunge ground cylindrical workpiece is a function of both the grinding wheel run-out and the waveshift. Waveshift determines how roundness profiles of the workpiece overlap in consecutive revolutions and is the difference between the ratio of the wheel rpm to the workpiece rpm and the next highest integer. In this paper, Acoustic Emission (AE) is evaluated as a possible method of monitoring wheel run-out, by measuring its amplitude at the wheel frequency. Variation of the AE signal at wheel frequency with waveshift is similar to model predictions of the variation in the normal force at wheel frequency and it reaches a maximum at a waveshift of 0.5. Tests to establish the linearity of the AE measurement with the amount of run-out show some scatter that needs to be understood before the technique can be successfully applied.
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