Abstract: Using time domain data, orbital plots, and spectrum analysis of
drill point displacement, cutting force and torque signals, the
initial penetration in drilling is experimentally investigated.
The mechanisms of drill wandering motion are analyzed by means
of three principles of self-excited vibration, I.e. the
regenerative principle, velocity component principle and mode
coupling principle.
Key words: Drill Drill penetrating characteristic Chatter Mechanism
Manuscript received on
April 17, 1997; revised manuscript October 20, 1998
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