Abstract
This paper established the finite element machine tool spindle and accessories model, accurate simulation of the boundary conditions, constraints and external loads, and the analysis of static and dynamic characteristics of spindle, the spindle optimization design based on ANSYS software, the performance comparison before and after optimization of the spindle; according to the results of optimization design and design experience of spindle. Analysis and interval of each size most likely made spindle, combined with orthogonal design method, the change of the size of the spindle under the condition of static and dynamic performance analysis of the spindle, and then obtain the optimal combination of the size of the spindle, spindle performance comparison optimal size composition and original spindle; based on the analysis results of different combinations of spindle size the static and dynamic performance of the orthogonal experiment, the response surface method were obtained and the performance function related to deflection and strength and modal The performance function, and considering the influence of spindle performance uncertainties, the reliability optimization design of spindle, spindle performance analysis of the optimized and the original spindle; integrated optimization design results of the comparison of the three methods shows: considering the uncertainty of the optimization design can according to the actual situation on the basis of improving the performance of the spindle.
