飞机前缘缝翼滑轨机构装配定位方案优化  

Optimization of Locating Program of Sliding Rail of Leading-Edge Slat

作　　者：胡瑾 刘顺[1] 顾群飞 赵亦希[1] HU Jin;LIU Shun;GU Qunfei;ZHAO Yixi(Shanghai Key Laboratory of Digital Manufacture for Thin-Walled Structures,Shanghai Jiaotong University,Shanghai 200240,China)

机构地区：[1]上海交通大学上海市复杂薄板数字化制造重点实验室,上海200240

出　　处：《机械设计与制造》2024年第12期207-211,共5页Machinery Design & Manufacture

摘　　要：飞机前缘缝翼机构是机翼的重要组成部分,其装配质量严重影响飞机交付和缝翼组件的互换性,其中滑轨与缝翼连接点处偏差对缝翼前缘装配整体控制目标偏差的贡献度较大,因此滑轨机构的装配定位精度有待进一步提高。针对飞机前缘缝翼滑轨机构的结构特点及装配方案,分别设计第一定位平面选择沿机翼展向平面和滑轨径向平面两种定位方案,对比滑轨定位精度差异,发现结果存在均值漂移现象,通过单因素分析方法找到滑轨交点孔均值漂移的原因,提出采用偏心衬套的装配定位方案进行改进,并通过装配偏差分析验证其有效性。结果表明:滑轨交点位置均值漂移的根本原因是装配偏差模型中存在非对称零件公差的设计,以滑轨径向平面为第一定位平面的偏心衬套方式可以改善滑轨定位精度,减少均值漂移情况。Leading-edge slat is a crucial part of airplane,whose quality after assembling will have a significant impact on airplanes’delivery and interchangeability of slat.The deviation at the connection points between slide rail and slat contributes greatly to the overall control target deviation.The primary locating surface choose between wing span plane and sliding rail radial plane based on structure features and assembly program of sliding rail part of leading-edge slat,and in cases of these locating methods,the locating accuracy of sliding rail is compared,and found that the mean position of sliding rail nodes is shifting.Through single-factor analysis,the reason of mean shift is found out.A program by using eccentric bushings to improve sliding rail location accuracy is proposed and by tolerance analysis,the validity of this program is proved.At last,we found out the reason why sliding rail nodes mean position shifts is asymmetry tolerance is used when designing leading-edge slat’s structure.When the primary locating surface is sliding rail radial plane,the optional assembly program using eccentric bushings is proved can alleviate mean shift condition and improve sliding rails locating accuracy.

关 键 词：飞机前缘缝翼 装配偏差分析 确定性定位 均值漂移 单因素分析 

分 类 号：TH16[机械工程—机械制造及自动化] TH12[航空宇航科学与技术—航空宇航制造工程] V262