Abstract
In order to research the influence of coating on tool temperature during cutting,so as to provide theoretical basis for the design of tool coating,the generation of cutting heat and the tool boundary condition in the high speed cutting process are analyzed,and the physical and mathematical models of single-coated tool heat conduction are built. The interior temperature distribution formula of single-coated tool in the orthogonal high speed cutting process is derived by using mathematical analysis method. Analytical calculations of the cutting temperature distributions of TiN,TiC,Al2O3 coated tools are carried out by using the derived temperature formula,and the result of analytical calculation is compared with that of numerical analysis. The comparison shows that they are in good agreement. The thermophysical properties of coating material and substrate material and the thickness of coating have important influence on temperature rise. With the increase of heat flow density,the influence of coating thickness on the interior temperature of tool is enhanced.
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