Forced Vibration Analysis of Machine Tools’ Hexapod Table

علوم کاربردی و محاسباتی در مکانیک

Article 3, Volume 24, Issue 2, November 2013, Pages 33-44   

Document Type: Original Article

DOI: 10.22067/fum-mech.v24i2.27187

Authors

M. Mahboubkhah^* ; S. Pedrammehr

Abstract

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

Keywords

Hexapod; Forced vibration; Machining forces

References