基于装配测量数据的机翼位姿修正及装配路径干涉检测方法

发布时间：2018-04-03 08:42

本文选题：翼身对接　切入点：叉耳接头　出处：《浙江大学》2017年硕士论文

【摘要】：针对飞机翼身对接过程中叉耳式翼身交点接头因变形而可能引起的装配干涉问题,提出一套基于现场装配测量数据的干涉检测方法以及修正方案。根据现场装配测量数据确定叉耳接头的实际位姿,并转化至统一的坐标系下,再利用距离算法和扫略体算法快速计算干涉结果,最终给出修正方案。阐述了与机翼位姿评价相关的基本理论。分析了影响机翼调姿的误差来源,描述了翼身对接系统的布局,介绍了装配系统中不同坐标系的概念,阐述了位姿数学描述方法以及坐标变换方法。结合制造准确度和协调准确度的要求,介绍了位姿评价的过程。针对叉耳接头的静态干涉问题,提出一种基于关键点距离检测的装配干涉判断方法。根据叉耳接头上的现场装配测量数据,计算接头在装配坐标系下的位姿并建立耳型接头和叉型接头的坐标变换关系,通过投影方法计算并归纳出接头的距离极值点,求出叉耳接头间最小距离。综合考察各个叉耳接头处的最小距离,判断干涉情况,并提出在多种叉耳接头布局方式下的机翼位姿调整方案。然后,通过仿真数据验证了该方法的有效性。针对叉耳接头的动态干涉问题,提出一种基于关键边界扫略体的动态干涉判断方法。根据叉耳接头上的现场装配测量数据,建立耳型接头侧面和叉型接头端面的坐标变换关系,分析并计算叉耳接头关键边界所形成扫略体间的干涉结果。利用仿真数据,将该方法与多次干涉检测法比较,验证了该方法的有效性和高效性。最后,总结了翼身对接过程中的干涉检测及修正方法的研究内容,并对未来的研究工作进行展望。
[Abstract]:Aiming at the problem of the assembly interference caused by the deformation of the cross point joint of the cross-ear wing body in the process of the aircraft wing body docking, a set of interference detection method based on the field assembly measurement data and a correction scheme are proposed.According to the field assembly measurement data, the actual position and orientation of the fork ear joint are determined and converted to a unified coordinate system. The interference results are calculated quickly by using the distance algorithm and the scanning body algorithm. Finally, the correction scheme is given.The basic theory related to the evaluation of wing position and attitude is expounded.In this paper, the error sources affecting the wing attitude adjustment are analyzed, the layout of the wing body docking system is described, the concepts of different coordinate systems in the assembly system are introduced, and the mathematical description method and coordinate transformation method of the position and pose are expounded.According to the requirements of manufacturing accuracy and coordination accuracy, the process of position and pose evaluation is introduced.A method for judging assembly interference based on critical point distance detection is proposed to solve the static interference problem of fork joint.According to the field assembly measurement data on the fork ear joint, the position and orientation of the joint in the assembly coordinate system are calculated and the coordinate transformation relationship between the ear joint and the fork joint is established. The distance extremum of the joint is calculated and summed up by the projection method.Find out the minimum distance between the fork ear joints.The minimum distance of each fork joint is investigated comprehensively and the interference is judged. The wing position and pose adjustment scheme is proposed under various configuration modes of the fork ear joint.Then, the validity of the method is verified by simulation data.To solve the problem of dynamic interference of fork ear joint, a dynamic interference judgment method based on critical boundary scan body is proposed.Based on the field assembly measurement data of the ear joint, the coordinate transformation relationship between the side of the ear joint and the end surface of the fork joint is established, and the interference results between the scanning bodies formed by the key boundary of the cross ear joint are analyzed and calculated.The effectiveness and efficiency of the method are verified by comparing the method with the multiple interference detection method by using the simulation data.Finally, the research contents of interference detection and correction methods in the process of wing-body docking are summarized, and the future research work is prospected.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：V262;TG95

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