Abstract
Thin-walled circular cylindrical shell, one of the most typical difficult-to-cut workpieces, is prone to vibration and regenerative vibration especially during the cutting process. Being different from previous studies, this paper established a model of cutting dynamics that accounts for both workpiece deformation and tool vibration. The mathematical model of optimization on cutting parameters was built, with constraint conditions and objective function including cutting force, cutting power, surface roughness, cutting stability, and cutting efficiency. The optimal cutting parameters were subsequently acquired by adding the critical cutting width to the mathematical model. Finally, the orthogonal table of the three factors and five levels was adopted in accordance with the orthogonal experimental design, and the material removal rate improves about 8 % by implementing the program of particle swarm optimization. The dynamic tests of cutting process were conducted, verifying the stability of the optimal results that ensures the best surface quality.
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