The tool wear is one of common failure modes under the higher speed operating conditions in the deep-hole drilling. Since the tool wear is directly related to the tool geometry and the cutting forces, it is reasonable to utilize the cutting force modeling to optimize the tool geometric parameters. Two typical modeling methods were utilized for the cutting force modeling of drilling processes: empirical model and geometric analytical model. Since the value and distribution of cutting force are influenced by the tool geometry, the optimization of the geometric parameters is deduced in the geometric analytical model of the deep-hole drilling processes in this paper. As a result, a tool design was derived based on the optimization of these geometric parameters.

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