"Although chatter prediction stability lobes have been successfully used in many industrial machining process optimizations, currently they lack for enough reliability to apply them intensively in the manufacturing industry. Machine dynamics accurate determination is one of the main sources of errors in current cutting stability models. For this reason, traditional dynamic characterization procedures have been called into question.
In this paper, the milling force excitation modal analysis is proposed, which consists of exciting the structure through the milling force and measuring its response. After working on the measured data, a standard FRF is obtained and the dynamic parameters are extracted in order to feed the stability model.
The obtained dynamic parameters are compared to those of the standard methods, analyzing the deviations and, therefore, quantifying the errors of the traditional dynamic parameter extraction methods."