数控内圆复合磨床几何误差建模及灵敏度分析  

Geometric Error Modeling and Sensitivity Analysis of CNC Internal Circular Compound Grinding Machine

作　　者：范晋伟[1] 秦池 潘日 刘会普 Fan Jinwei;Qin Chi;Pan Ri;Liu Huipu(College of Mechanical Engineering and Applied Electronic Technology,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京工业大学机械工程与应用电子技术学院,北京市100124

出　　处：《工具技术》2021年第8期96-100,共5页Tool Engineering

基　　金：国家科技重大专项(2019ZX04006-001)。

摘　　要：为提高孔、套筒类零件的加工精度、数控内圆复合磨床的磨削精度和加工效率,明确各误差参数对磨削精度的影响程度,针对某型号的数控内圆复合磨床进行误差分析。基于多体系统理论建立该磨床的拓扑结构,通过计算得到相应的几何误差模型,并对各误差参数进行求导,得到各自的灵敏度表达式,代入磨床结构参数以及检测得到的误差参数后,通过归一化处理可确定各误差参数的灵敏度系数,对灵敏度系数进行排列,并对前几项系数较大的误差进行补偿,为后期的机床加工精度提高奠定了基础。In order to improve the machining accuracy of bore and sleeve parts as well as the grinding accuracy and machining efficiency of CNC internal cylindrical compound grinding machine,and to clarify the degree of influence of each error parameter on the grinding accuracy,an error analysis is performed for a certain model of CNC internal cylindrical compound grinding machine.Based on the theory of multi-body system,the topology of the grinding machine is established,and the corresponding geometric error model is calculated,and the respective sensitivity expressions are obtained by deriving each error parameter.The sensitivity coefficients are ranked,and the first few errors with large coefficients are compensated laying the foundation for the later improvement of machine processing accuracy.

关 键 词：多体理论 几何误差 灵敏度系数 精度提升 

分 类 号：TG596[金属学及工艺—金属切削加工及机床] TH161[机械工程—机械制造及自动化]