Modeling of Thin-Walled Cylindrical Part Turning Process Dynamics

This article presents the method of chatter prediction in turning process using 3D diagrams of maximum and minimum vibrations magnitudes, cutting forces, and instantaneous chip thickness along the tool path. The 3D structural dynamic module includes a finite element model of workpiece and surface topography module, a dynamic cutting force prediction module. The gyroscopic effects are taken into the account. A numerical model simulating the turning process of thin-walled cylindrical workpieces for various spindle speed values is considered. The results of the modeling are 3D diagrams of maximum and minimum vibrations magnitudes along the tool path. The simulated results taking into account material removing, gyroscopic effects, and no effects are compared. The results of numerical simulations predict the chatter-free regimes of a turning process.