The effect on cutting precision reliability of the spindle forced vibration and reliability sensitivity of random parameters are studied in consideration of random factors. The forced vibration of lathe spindle takes place under the action of dynamic cutting force during cutting process. The frequency response of spindle is calculated through using finite element method. The randomness was taken into consideration of cutting parameters and the frequency responses were calculated in the condition of different parameters based on random sampling. The function expression between frequency response and random parameters was obtained by using the neural network training method. The reliability performance function was established of cylindricity error generated from forced vibration of spindle during turning process, and the reliability and reliability sensitivity were calculated based on linear second order moment method.
ZHANG Yi-min CAO Hui WANG Hao YANG Zhou.
Reliability and reliability sensitivity analysis of turning precision based on spindle dynamic response[J]. Journal of Vibration and Shock, 2015, 34(23): 14-17
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