Dynamic Simulation of a Multi-axis Synchronous Gantry Machining Center

A flexible dynamic model of a multi-axis synchronous gantry machining center was developed with a finite element analysis software SAMCEF Mecano. The dynamic solution was obtained with implicit Non linear method and HHT recurrence algorithm based on modified Newmark algorithm. The position error and velocity were analyzed. The influence of elastic deformation on position error was developed contrast between flexible body and rigid body. The dynamic model was proved to be valid by the comparison of the results between simulation and theory. It shows that the position error and the variation of velocities are related to the vibration characteristic, driving motor and nonlinear characteristics of machining center. The results provide necessary information for analysis of dynamic performance, dynamic optimization design, dynamic simulation of machining center. The research on the machining center is of great theoretical significance and practical value.