Rigidity Reliability Analysis of High-speed Motorized Spindle based on RSM  
Author Xuehong He


Co-Author(s) Yanshou Jiang; Mengbing Zhu; Jia Li


Abstract Study on the rigidity of high-speed motorized spindle, as well as the sensitivity on the reliability of the random variables is of great significance to improve the rigidity reliability of the spindle. In this paper, we obtain the rigidity reliability of high-speed motorized spindle through the analysis on its reliability with application of the Response Surface Methodology (RSM), and explore the different influence of the various parameters on the spindle reliability. What’s more, the process to acquire the ultimate state function by the RSM is also briefly described in this paper. The function includes the information of linear, quadratic and across quadratic terms, which makes the calculation on sensitivity reliability easier to do and improves its accuracy greatly. The results of the analysis in this paper indicate that the inner diameters of shaft, bearing and rotor have greater impact on the reliability of motorized spindle than the outer diameter of shaft do. These studies provide references for enhancing the high-speed motorized spindle rigidity.


Keywords high-speed motorized spindle; reliability analysis; RSM (Response Surface Methodology); sensitivity analysis
    Article #:  18112
Proceedings of the 18th ISSAT International Conference on Reliability and Quality in Design
July 26-28, 2012 - Boston, Massachusetts, U.S.A.