精密磨床主轴轴颈形状误差对动静压轴承性能的影响  

Influence of Roundness Error of Spindle on Performance of Hybrid Liquid Bearing in Precision Grinder

作　　者：杨军 胡靖[1] 

机构地区：[1]湖南大学机械与运载工程学院,长沙410082

出　　处：《机械科学与技术》2016年第6期890-895,共6页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家科技重大专项(2012ZX04002-091)资助

摘　　要：考虑主轴轴颈制造中的圆度误差和圆柱度误差,应用FLUENT软件,对精密数控磨床砂轮主轴深浅油腔动静压轴承的性能进行了分析。结果表明:主轴轴颈圆度误差和圆柱度误差的种类对动静压轴承性能的影响各不相同,随着轴承间隙的变化而变化。动静压轴承承载能力、功耗以及油膜最高温升等性能参数都会随着主轴轴颈误差幅值的增加而增加;但动静压轴承流量的变化趋势却相反。要提高磨削加工精度,必须考虑精密数控磨床主轴轴颈的形状误差的影响。Considering the roundness error and cylindrical error of spindle in precision grinder,we analyze the performances of hybrid bearing with deep-shallow oil chamber with FLUENT software. The influence of the different types of roundness error and the cylindrical error of spindle on the performance of the hybrid bearing varies with the change in bearing clearance. The results show that load capacity,power consumption and the highest temperature rise of the oil film in the bearing will increase with the increasing of error amplitude,but the variation rule in the bearing oil flow is opposite. The influences of the roundness errors of spindle on the performances of hybrid bearing in the spindle of precision grinder cannot be ignored in order to improve grinding precision.

关 键 词：精密磨床 主轴 动静压轴承 轴颈圆度误差 轴颈圆柱度误差 

分 类 号：TH133[机械工程—机械制造及自动化]