Abstract：In order to reduce the effect of the chatter on the machining process,a new stability lobes prediction method is presents using time finitee lement(TFE) theory focusing on the chatter in machining process.The dynamic machining process is modeled as a first order delay differential system.Using this mathematical model,the stability lobes are predicted based on the TFE method and Floquet theory.Afterwards,the comparison between the methods and literature is conducted,the results show that the proposed method can predict stability limit with high accuracy.Finally,one experiment is chosen to verify the validity of the stability limit prediction with high accuracy,milling parameters optimization can be conducted using the stability limit and this is significance for improving the machining efficiency and workpiece quality.

Keyword：chatter;stability limit;time-finite-element method;milling;