面向航空装配六自由度钻铣机的误差分析  

Error analysis of six free drilling and milling machine for airplane assembly

作　　者：李晓庆[1] 赵东标[1] 孙涛[1] 

机构地区：[1]南京航空航天大学机电学院,江苏南京210016

出　　处：《机械研究与应用》2011年第5期9-14,共6页Mechanical Research & Application

基　　金：国家自然科学基金项目资助(51175261)

摘　　要：介绍了面向航空连接装配的数控钻铣机设计及其误差相关技术研究。采用机器人学对数控钻铣机进行运动分析;通过分析四个移动轴滚珠丝杠误差得出移动轴坐标变换,并结合谐波减速器传动误差进行建模,最终得出六自由度的几何误差综合模型;利用该模型,对钻铣机整体进行精度分析,最终得到相关零件的制造精度及装配精度,对每个关节的公差进行优化分配,使得设计经济合理,减小加工制造成本,并为后期的误差补偿打好基础。Research on the design of CNC drilling and milling machine for the aviation connection assembly and its error are introduced. The robotics was used in the motion analysis of CNC drilling and milling machine. Through the analysis of four mobile axis ball screw error , the axes coordinate transformation was obtained, and then six degrees of freedom comprehensive error model is obtained by the modeling with the harmonic gear transmission error. Based on this model, the accuracy of the whole drilling and milling machine is analyzed and finally the manufacturing precision and assembly precision were obtained. To reduce the cost of the manufacturing and make the design rational, and lay a solid foundation for the post-error compensa- tion , the tolerance optimal allocation for each part is necessary.

关 键 词：运动分析 几何误差建模 精度分配 公差优化 

分 类 号：TH132.1[机械工程—机械制造及自动化]