Abstract:

Based on the principle of pre-stress cutting, a coupled thermo-mechanical model with regard to pre-stress cutting on hardened bearing ring is established, chip separation is achieved by applying the arbitrary Lagrangian Eulerian method (ALE) and adaptive mesh technique. Several critical technologies, such as the material constitutive relationship of workpiece, contact surface friction model and thermal control equation are considered and implemented in pre-stress cutting simulation. Some numerical simulation results, such as the cutting forces, cutting temperatures and residual stress distributions in the machined surface are discussed and compared with experimental data, which show good consistency.

Key words: pre-stress cutting, coupled thermo-mechanical, numerical simulation