Study on the Optimum Choice of Cutting Tools in NC Machining Based on the Polychromatic Sets Theory

Based on the polychromatic sets theory, a relational model of cutting-tool choice was established, which was shown with a contour Boolean matrix. Through the coloring logical operation, the cutting-tools candidate set was calculated to meet machining conditions. With the candidate cutting-tools set, the fuzzy optimization was made for every part feature. And with considering the effects of the time of cutting-tool exchange, processing sequence and other relevant information for the selection of cutting-tool, the choice of cutting-tools is optimized as a whole during machining.