On the stability of high-speed milling with spindle speed variation

Abstract : Spindle speed variation is a well-known technique to suppress regenerative machine tool vibrations, but it is usually considered to be effective only for low spindle speeds. In this paper, the effect of spindle speed variation is analyzed in the high-speed domain for spindle speeds corresponding to the first flip (period doubling) and to the first Hopf lobes. The optimal amplitudes and frequencies of the speed modulations are computed using the semidiscre- tization method. It is shown that period doubling chatter can effectively be suppressed by spindle speed variation, although, the technique is not effective for the quasiperiodic chatter above the Hopf lobe. The results are verified by cutting tests. Some special cases are also discussed where the practical behavior of the system differs from the predicted one in some ways. For these cases, it is pointed out that the concept of stability is understood on the scale of the principal period of the system--that is, the speed modulation period for variable spindle speed machining and the tooth passing period for constant spindle speed machining.
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Sébastien Seguy, Tamás Insperger, Lionel Arnaud, Gilles Dessein, Grégoire Peigné. On the stability of high-speed milling with spindle speed variation. International Journal of Advanced Manufacturing Technology, Springer Verlag, 2010, 48 (9-12), pp.883-895. ⟨10.1007/s00170-009-2336-9⟩. ⟨hal-00750722⟩

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