Vortex Stability Analysis Based on Coupling the Rubbing with BTA Boring Bar

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Abstract:

For the purpose to analyze the stability of the deep-hole boring, a rubbing disturbance model is proposed. New model introduces an effect of friction dominant. The stability criterion of the system is obtained, by means of describing the tangential friction velocity as the function of the angular frequency and eccentricity. Thus, the center tracks changing with vortex stirred by the rotating bar within the inner and outer cutting fluid environment are analyzed. The results show that the vortex frequency of boring bar tends to increase with rotation speed increasing. The vortex frequency tends to hyperbolic declining with the increasing of the clearance C.

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50-55

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February 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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