Optimal Tuning Strategy For Chatter Avoidance In Thin-Walled Part Milling By Means Of Tuneable Clamping Table

Regenerative chatter kind of self-excited vibrations is one of the main issues setting a barrier to productivity in thin wall milling processes on account of their low stiffness and damping properties. In this paper, the tuneable clamping table (TCT) concept is presented as an efficient device for chatter avoidance in thin-walled part milling. The idea is based on mode coupling with in-series configuration, which permits enhancing the dynamic stiffness at the machining point without any direct intervention at the cutting point. The paper presents an optimal tuning strategy for the TCT aiming at maximizing the milling stability, providing the analytical formulae for achieving it. The introduced concept is compared to regular TMDs in terms of optimal parameters and tuning limits and its effect on milling stability are shown.