飞机翼身交点孔精加工中的机身位姿评估与优化  

Evaluation and Optimization of Fuselage Posture for Finishing machining of wing-fuselage connecting holes

作　　者：刘楚辉[1] 

机构地区：[1]嘉兴学院机电工程学院,浙江嘉兴314001

出　　处：《嘉兴学院学报》2014年第3期58-65,共8页Journal of Jiaxing University

基　　金：国家自然科学基金资助项目(51305165);浙江省教育厅科研计划项目(Y201226088)

摘　　要：为了避免飞机数字化总装过程中翼身交点孔精加工出现安全问题,提出机身位姿评估与重定位优化方法:基于加工前获得的各翼身接头的三坐标测量数据,建立交点孔的精加工余量评价模型.当部分交点孔不满足精加工可执行条件时,对机身进行重定位以实现加工余量的重新分配.给出一种确定机身重定位调姿参数的约束优化方法,确保重定位后的机身满足位姿要求和交点孔的精加工余量要求.仿真结果表明,该方法能及早发现并消除由不适当的机身位姿引起的翼身交点孔精加工问题.To avoid the security problem of wing- fuselage connecting hole machining in digital final assembly of aircraft, a fuselage posture evaluation and realignment optimization method is propose. Before formal cutting process, automatic accurate three- coordinate measurement of wing- fuselage joints is performed on spot. A cutting allowance evaluation model of wing-fuselage connecting hole is put forward based on measured data. If some wing- fuselage connecting holes do not meet the security condition of finish machining, the fuselage posture must be realigned to redistribute cutting allowances of wing- fuselage connecting holes. A constrained optimization method is proposed to gain the optimum ~uselage realignment pa- rameters, which will ensure that each wing-fuselage connecting hole has enough cutting allowance and meet all requirements on fuselage posture at the same time. Simulation results show that hidden problems in finish machining of wing--fuselage connecting holes caused by improper fuselage posture can be found out and elimina- ted.

关 键 词：飞机装配 三坐标测量 加工余量评价 重定位参数 

分 类 号：V262.4[航空宇航科学与技术—航空宇航制造工程]