Abstract
The size generation process in cylindrical plunge grinding is experimentally analyzed, taking the thermal deformation of workpiece into account. The thermal deformation of workpiece is first measured to make clear the variation of the thermal deformation of workpiece in one cycle of plunge grinding. The thermal deformation of workpiece increases in spark-in state, becomes constant in steady state and then decreases in spark-out state of plunge grinding. The thermal deformation rate of workpiece is then discussed to make clear the actual size generation rate, which is affected by the feed rate of wheel head and the thermal deformation rate. The actual size generation rate increases abruptly in spark-in state because of the thermal expansion of workpiece, and decreases significantly in spark-out state because of the thermal contraction of workpiece.
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