Unbalance response analysis of high speed aerostatic motorized spindle rotor system |
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| Authors: | YU Lihu XIE Qingsheng LI Shaobo and HUANG Haisong |
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| Institution: | Key Laboratory of Advanced Manufacturing Technology, Guizhou University Guiyang 550025,China,Key Laboratory of Advanced Manufacturing Technology, Guizhou University Guiyang 550026,China,Key Laboratory of Advanced Manufacturing Technology, Guizhou University Guiyang 550027,China and Key Laboratory of Advanced Manufacturing Technology, Guizhou University Guiyang 550028,China |
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| Abstract: | According to the high speed of aerostatic motorized spindle, the complex dynamic behavior and the unbalance incentive, dynamical model is built up on the basis of Lagrange equation. And it is includes the differential equatioan of free vibration and forced vibration.Then, the residual unbalanced inertial centrifugal force and the mechanism of unbalanced magnetic pull are analyzed. Finally, a motorized spindle rotor-gas bearings system with the highest working speed of 250 000 r/min is simulated in the way of the unbalance excitation harmonic analysis. The dynamic behavior of high-speed aerostatic motorized spindle is revealed in supercritical mode at unbalance excitation.A theoretical basis is provided for the optimization design, vibration control to the rotor system of high-speed aerostatic motorized spindle in engineering application. |
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| Keywords: | high speed motorized spindle aerostatic bearings dynamical modeling unbalance response |
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