Dynamics and stability of parallel turning operations

Parallel turning offers increased productivity due to multiple cutting tools in operation. The dynamic interaction between the tools needs to be analyzed as it affects the stability of the process. In this study, dynamics and stability of parallel turning processes are modelled. The results of the developed stability models in frequency and time domains show reasonable agreement. One of the interesting outcomes is that the stability could be increased due to dynamic interaction between the tools creating an absorber effect on each other. The predicted stability limits are compared with experimental results where reasonable agreement is demonstrated.