多自由度车削系统稳定性分析  

STABILITY ANALYSIS OF MULTI DEGREE OF FREEDOM TURNING MODELS

作　　者：张旭 张丽 Zhang Xu;Zhang Li(College of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学航空宇航学院

出　　处：《动力学与控制学报》2019年第6期508-513,共6页Journal of Dynamics and Control

基　　金：国家自然科学基金资助项目(11772151);中央高校基本科研业务费专项资金资助(NS2017004)~~

摘　　要：车削加工是一种应用广泛的加工制造技术,如何确保加工高效率、高质量、高精度,一直是研究的热点.建立了多自由度车削模型,考虑切削宽度和主轴转速的变化,分别对单自由度、三自由度以及九自由度车削模型的稳定性进行了分析,得到了关于切削宽度和主轴转速的稳定性区域图,并通过数值方法进行了验证.结果表明:在考虑工程实际阻尼范围时,目前最常用的单自由度车刀模型所预测的关于切削宽度和主轴转速的稳定性结果,在相对较低转速区偏保守,而在高转速区的稳定性区域过大.As one of the most widely used manufacturing technologies,turning has been a hot topic regarding requirements for high efficiency,high quality and high precision.This paper presents stability analysis of 1 DoF,3 DoF,and 9 DoF turning models in the parameter plane of cutting width and spindle speed.The obtained stability charts show that when realistic damping is considered,the stability region predicted by 1 DoF model is more conservative than by higher DoF models in relatively low speed range,while in high speed range higher DoF models give much smaller stability region due to the presence of higher order vibrations.

关 键 词：多自由度模型 时滞 D曲线 稳定性分析 车削系统 

分 类 号：TG5[金属学及工艺—金属切削加工及机床]