Forced Vibration Analysis of Machine Tool's Hexapod Table

In this paper، an analytical study of the forced vibrations of hexapod table is studied. Considering external force as a time sinusoid force، forced vibrations of the platform are investigated. Resonance frequencies and vibrations of the moving platform are also calculated in different directions. The results of the analytical approach are verified using FEM simulation. Modelling the harmonic milling forces، a careful examination of the forced vibration are carried out in different cutting conditions and different configurations. Resonance frequencies and the range of vibrations are then calculated. Finally، knowing the resonance frequencies and the vibrations of hexapod table، different configurations of the table، which results in dynamic instability، are investigated