主轴系统动态设计中的多参数优化

Multi-parameter optimization in dynamic design of spindle system

针对主轴系统的动态设计问题,提出了一种基于设计参数作用特征分析及其相关性分析的整体优化方法。以系统的整体动刚度为结构优化的目标,应用目标系统的动力学模型,分析主要设计参数对系统动刚度的影响规律及其特征,并应用正交试验法分析了这些设计参数影响系统动刚度的显著性和相关性。两个阶段的数字化分析结果可以为系统结构的整体优化提供重要依据。仿真比对结果显示:整体优化多个设计参数可获得更好的效果。

A comprehensive optimization method is proposed for the dynamic design of the spindle system, which is based on the feature analysis and correlation analysis of the effects on design parameters. Aiming to the dynamic rigidity of system as the structure optimization, with application of dynamics model for the target system, the effect rules and the features of the main design parameters on the system dynamic rigidity is analyzed in this paper; meanwhile, the significance and correlation of these design parameters on the system dynamic rigidity are analyzed with the orthogonal test method. The digital analysis results from the two stages can provide the important evidence for the whole optimization of the system structure. The emulation comparison result indicates that the better effect should be achieved by optimizing multi-parameters synthetically