Modeling of high-speed milling process with frictional effect

摘要

This article deals with the problem of chatter vibrations in high-speed milling process taking into account both regeneration and frictional chatter. In this aim, a nonlinear model of high-speed down milling is developed. The proposed model includes friction force produced between an edge of a tool and a workpiece, modeled by nonlinear and non-smooth function and also the time delay effect, which is responsible for a vibration regeneration. The influence of friction on the process stability is compared with results obtained in a classical way using a commercial software. Finally, numerical tests are compared with the stability lobe diagrams obtained experimentally during real machining of nickel superalloys.