Comparative study of stability predictions in micro-milling by using cutting force models and direct cutting force measurements

Abstract

Chatter vibration in micro-milling is critical for the breakage of the cutting tools. Therefore, the dynamic stability is important and chatter vibration should be avoided. This paper presents a comparative study between two models for prediction of chatter. The difference between the two models is in the source of cutting forces. The first chatter model uses a mathematical cutting force model while the second chatter model uses direct measured cutting forces. Both chatter models are solved in the time domain and the same criteria for chatter is applied. The results showed that the chatter model using direct measured cutting forces was in better agreement with fast Fourier transform analyses.