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In metal cutting, tool wear and restoration of its cutting properties are a significant problem for engineering production. Therefore, the development of a theoretical description of tool wear and its dependence on processing modes is a pressing issue for machine builders. The article offers a version of the mathematical model of wear of cutting tools made of composite hard alloy materials. The model of fatigue wear of carbide cutting tools for steel turning based on the cutting theory is developed in this article. The model takes into account cutting modes, the mechanical properties and the heterogeneity of the material being processed, the geometric parameters of the cutter, the instability of the cutting process, the periodic change in shavings thickness, the width of the cutting layer, the cutting speed and a number of other factors. The proposed approach allows predicting the fatigue wear of cutting tools made of hard alloy, as well as determining the ways to improve the structure of the hard alloy, the shape and geometry of the cutting plates. |
