抄録
No matter what wear mechanism controls tool wear, tool wear rate can be expressed as functions of stress and temperature on the tool face. Thus stress and temperature distributions on the rake face were measured with split tools and with thermocouples respectively to obtain wear equations. Specific crater wear rate of coated tools was linear with normal stress and increased exponentially with temperature. Using the wear equations, crater wear of coated tools was predicted through cutting temperature analysis by the newly proposed finite difference method. The calculated results for the tools with single and double coating layers were in good agreement with experimental results. The analysis for predicting crater wear of coated tools showed that thermal conductivity of substrate has a great influence on tool wear rate.
