Abstract
In this paper by means of systematic controlled the infeed rate of wheel head with grinding time, fundamental analyses of plunge grinding techniques have been considered in order to increase the grinding efficiency without decrease of the grinding quality, with taking account of the thermal deformation rate of wheel and workpiece. Main conclusions are as follows : (1) The bigger infeed rate increases in initial time of spark-in state, the higher actual size generation rate exceeds the infeed rate, because the thermal deformation rate of wheel and workpiece increase rapidly. (2) Decreasing the infeed rate in latter stage of infeed slowly with time, the grinding efficiency can be increased with better surface roughness and size allowance, because the thermal deformation rate of wheel and workpiece don't hardly affect in spark-out state.
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