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Abstract: The influence of vortex motion of spinning drilling shaft
is investigated, which caused by the hydro-force between the workpiece
hole and the drilling shaft. First, it established the mathematic model
of spinning drilling shaft concerning about the nonlinear reactive force
of liquid acted on the drilling shaft. Then it acquired equation of
vortex motion buckling condition and instability on drilling shaft. It
proves that main reason of instability on spinning drilling shaft is the
self-excited vibration and sub-resonance is the side effect. By
analyzing the relation between the instability and the moving parameters
of drilling shaft, the rules of selecting cutting parameters are
derived. The theoretical result is consistent with practical data used
in the factory, so has significant guidance to the production.
Key words: BTA deep-hole processing Drilling shaft Vortex motion
Motion stability
CLC No: TH142
Received 20040425, received in
revised form 20040928
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