Analytical prediction of transient and steady cutting temperature distributions in coated tools under time-varied heat sources

The generated heat sources during cutting dynamical process are varied with the cutting time, which causes the time-varied cutting temperature distribution in coated tools. The cutting dynamical process could be taken as the composition of transient and steady heat transfer stages. In this research, the one-dimensional transient and steady heat transfer models of coated tool were proposed and solved under time-varied heat sources applied on tool rake face. The time-varied heat sources influencing on cutting temperature distribution in coated tools are revealed. The differences of tool parameters and properties influencing on cutting temperature between transient and steady heat transfer stages are given, which are verified with the simulated heat transfer experiments. The research results could help to guide for better selection and developments of coated tools in metal cutting process.