高速球轴承主轴系统的动力学模型及其优化设计方法  

Dynamic modelling and optimization design of spindle systems with high-speed ball bearings

作　　者：张亚伟[1] 金翔[1] 李蓓智[1] 梁越升 

机构地区：[1]东华大学机械工程学院,上海201620 [2]佐治亚理工学院机械工程学院,georgia303320320

出　　处：《振动与冲击》2015年第18期57-62,共6页Journal of Vibration and Shock

基　　金：国家863计划项目(2012AA041309);国家重大科技专项(2011ZX04016-041)

摘　　要：提出和实现了角接触球轴承的动刚度计算方法,可以有效地考察轴承预紧力和转速对轴承动刚度的作用。提出了基于高速轴承动刚度的高速主轴系统动力学模型,以及高速主轴工作性能的综合优化设计方法。该方法通过综合考虑轴承动刚度、主轴轴承配置方式、工作转速受限系数、主轴结构参数、挠性接头细颈磨削工艺及其对高速主轴的精度要求等,快速解析影响主轴工作性能的重要因素及其耦合关系,准确发现高速主轴系统设计方案中的薄弱环节,并对重要影响因素及其取值进行有效的协调设计,为实现主轴系统高性能目标奠定基础。A calculation method for the dynamic rigidity of angular contact ball bearings was put forward and realized. By using the method, the mechanism of how the dynamic rigidity is affected by the preload of bearings and rotation speed was effectively investigated. The dynamic model of a high-speed spindle system was built on the basis of analysing the dynamic rigidity of high-speed bearings, performance of the high-speed spindle was proposed. In and an integrated optimization design method for the work the method, the dynamic rigidity of bearing, spindle bearing configuration, working speed limiting factor, structural parameters of spindle, grinding process for flexible connector necking and demand on accuracy of high-speed spindle were comprehensively considered to analyse quickly the key factors affecting the work performance of spindle and to inspect the coupled relations among these factors. So that, the weakness in the design scheme of high-speed spindle can be accurately identified and the influential key factors and their correspondent values can be effectively determined in a coordinated fashion. The study lays a foundation to realize the design of high performance spindle systems.

关 键 词：高速主轴系统 工作性能 角接触球轴承 动力学模型 计算方法 优化方法 

分 类 号：TH212[机械工程—机械制造及自动化] TH213.3