A Study on Parametric Vibration in Chuck Work

In this paper, the parametric instability in chuck work process is investigated. And an analytical criterion of stability is given, and experimental confirmation is carried out. The vibration of this type is considered to have a significant influence on machinability. However, the applicable isolation of this vibration has not been done. The results obtained are as follows: (1) The parametric vibration is generated by the directional orientation in the stiffness of chucked workpiece. (2) The theoretical analysis for predicting the conditions of parametric instability could be verified by good agreement with the result of cutting test. (3) In the chuck work process, the parametric vibration is amplified with mingling regenerative chatter by the condition of low and fluctuating stiffness.