Dynamic analysis of the machine drive system

In consideration of the bearing stiffness, the contact deformation between the ball screw and the worktable, and the contact deformation between the worktable and the guide, lateral, axial and torsional vibrations of the pre-tension screw and the vibration of the worktable were studied. A dynamic model of the ball screw drive system of machines was established by using the Lagrange equation. The model was analyzed by the mode superposition and Runge-Kutta method to calculate the transient response of the system. Effects of system’s parameters on the whirl speed of the screw, the axial vibration of the cutter’s work point, and also the stability of the system are discussed. The present work supplies a base for designing the drive system.