摘要
小型高速空气静压主轴在国内外广泛应用于小型零件与微小非球面的精密磨削和抛光加工,针对该目的设计了一种空气主轴,根据技术要求确定主轴采用空气静压轴承作为支撑,涡轮驱动旋转。通过工程算法得出主轴主要结构参数及性能估算;采用数值模拟软件Fluent进一步分析了主轴各结构参数对其承载性能和气体耗量的影响,并对其进行结构修改和参数优化;使用动平衡机对主轴转子进行动平衡校正,使不平衡量降低至左G0.015,右0.04;最后对主轴转速、径向及轴向跳动、刚度等进行测试,得出主轴主要技术参数。
The small-scale high-speed aerostatic spindle has been widely used in precision grinding and polishing of the minimal components and aspheric surfaces, aimed at this purpose, an oerostatic spindle is developed. The aerostatic bearingis adopted as the support according to the requirement of technology. The spindle main structure parameters and performance is obtained th/ough engineering algorithnt The influence of the spindle＇s structure parameters to its bearing performance and gas consumption is analyzed using numerical simulation software Fluent,then modify its structure and optimize its parameter. After the spindle parts are all produced, the dynamic balance correction for spindle rotor is made using dynamic balancing machine. Finally, the spindle speed, radial and axial runout, stiffness test are measured and obtain the spindle ＇s main technical parameters.
出处
《机械设计与制造》
北大核心
2017年第12期149-153,共5页
Machinery Design & Manufacture
基金
国家国际科技合作专项项目(2014DFG72480)
国家自然科学基金(51205120)
关键词
空气静压轴承
数值模拟
承载能力
动平衡
结构优化
Aerostatic Bearing
Numerical Simulation
Bearing Capacity
Dynamic Balancing
Structure Optimization
