Journal
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
Volume 48, Issue 1, Pages 124-134Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijmachtools.2007.06.009
Keywords
milling; stability lobes; chatter vibration; islands; delay differential equations
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This paper provides conclusive evidence that isolated islands of chatter vibration can exist in milling processes. Investigations show these islands are induced by the tool helix angle and act to separate regions of period-doubling and quasi-periodic behavior. Modeling efforts develop an analytical force model with three piecewise continuous regions of cutting that describe helix angle tools. Theoretical results examine the asymptotic stability trends for several different radial immersions and helix angles. In addition, new results are shown through the implementation of a temporal finite element analysis approach for delay equations written in the form of a state space model. Predictions are validated by a series of experimental tests that confirm the isolated island phenomenon. (C) 2007 Elsevier Ltd. All rights reserved.
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