"In the last decade the prediction of the stability of different milling processes has experimented a great advance. Part of these advances are related to the successful application of frequency models that provide sufficiently precise analytic solutions for the industrial environment. Most of these models of regenerative chatter are based on lineal models of cutting force. Following these models, the cutting forces vary linearly with the chip thickness; therefore it is supposed that the stability of the process does not depend on the ..."