Model of thermal and stressed state of material and cutting tool at plasma-machine treatment

In this paper the determination of temperature and stress distribution in the coating material and in the cutting tool was carried out on a basis of model of thermal and stressed state of cutting tool and machined material where the thermal balances in the chip (machined material), coating (hardened layer) and in the tool body are investigated with the appropriate boundary conditions. This approach provides a possibility to determine parameters required for calculation of cutting tool wear, to determine its theoretical wear life, to estimate a probability of elastic chipping of cutting tool edge and the probability of its dimensions change due to the creeping.