Effects of Spindle Speed on Turning Stability
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Machining stability study for rough cuts suggests that low speeds impart instability. However, bifurcated states could be staged in between with increasing speeds. Therefore it cannot be concluded that speed increase would always result in stability. Using the cutting model presented in  and , critical DOCs are seen to increase with the increase of speed. Cutting force amplitude oscillations are determined by the nonlinearity of the force, not by speed increments. While both the tool and workpiece show similar instability stages most of the times, however, when it is closer to the critical depth-of-cut, the tool reaches instability first before the workpiece does. In contrast to the observation, when DOC is less than 1.00mm, most of the times when system is unstable, only the workpiece or the tool is unstable, but not both. Copyright © 2012 by ASME.
author list (cited authors)
Dassanayake, A. V., & Suh, C. S.