Micro-milling self-excited vibrations reduction using vibration absorbers

The goal of this paper is to minimize self-excited vibration in the micro-milling process. This goal is achieved by using passive linear and nonlinear vibration absorbers. By reducing this unwanted vibration the final surface will have better surface quality. In this paper the micro-milling process is modelled as a two degree of freedom system and the effect of the cutting tool eccentricity is considered. To have stability for the larger depth of cut the optimal parameters for the passive vibration absorber is defined by a developed algorithm. The effects of vibration absorber on the stability and time response are investigated. The results show that using an optimal vibration absorber the vibration amplitude decreased and stability zone enlarged sensibility.