In the overwhelming majority of machining operations, the primary auto-oscillations that are excited in the technological system (TS) often degenerate to the secondary or so-called regenerative auto-oscillations. Their amplitude is several times that of the primary auto-oscillations [1,2, and others] - degrading the quality characteristics of the cutting process. The excitation of the regenerative auto-oscillations has usually been examined [1-5 and others] from the viewpoint of its influence on the dynamic stability of the TS. With rare exceptions [3], the mechanism itself of the appearance and development of these auto-oscillations has not been studied in detail. However, the development of the effective measures for controlling the level of the regenerative auto-oscillations is possible only on the basis of a profound understanding of their nature.
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