Modeling and Distribution Identification of Instantaneous Cutting Energy Efficiency of Milling Cutter under Vibration

Abstract

The instantaneous cutting energy efficiency of a milling cutter is an important index to evaluate the cutting performance of the milling cutter. The existing models for cutting energy efficiency ignore the differences in the instantaneous cutting energy efficiency of each cutter tooth. In this work, according to the influence of milling vibration on instantaneous cutting posture and the input and output energy, a correlation model of the instantaneous cutting energy efficiency of a milling cutter and its cutter teeth was established. Using the cutting-force energy efficiency and the specific cutting energy and their distribution on the cutting edge of the cutter teeth, the dynamic relationship between the effective cutting energy transfer and conversion of the milling cutter was characterized. The instantaneous cutting-force energy efficiency and specific cutting energy were calculated. The formation of the dynamic distribution of the cutting energy efficiency was unveiled. Finally, an identification method for distributive variation in the instantaneous cutting energy efficiency of the milling cutter was proposed. The response of the distribution of the instantaneous cutting energy efficiency was studied and verified using experiments. The results showed that there was high similarity and good agreement between the calculated and measured results of the cutting energy efficiency of the milling cutter.