本文選題：翼身對(duì)接　切入點(diǎn)：叉耳接頭　出處：《浙江大學(xué)》2017年碩士論文

【摘要】：針對(duì)飛機(jī)翼身對(duì)接過程中叉耳式翼身交點(diǎn)接頭因變形而可能引起的裝配干涉問題,提出一套基于現(xiàn)場(chǎng)裝配測(cè)量數(shù)據(jù)的干涉檢測(cè)方法以及修正方案。根據(jù)現(xiàn)場(chǎng)裝配測(cè)量數(shù)據(jù)確定叉耳接頭的實(shí)際位姿,并轉(zhuǎn)化至統(tǒng)一的坐標(biāo)系下,再利用距離算法和掃略體算法快速計(jì)算干涉結(jié)果,最終給出修正方案。闡述了與機(jī)翼位姿評(píng)價(jià)相關(guān)的基本理論。分析了影響機(jī)翼調(diào)姿的誤差來源,描述了翼身對(duì)接系統(tǒng)的布局,介紹了裝配系統(tǒng)中不同坐標(biāo)系的概念,闡述了位姿數(shù)學(xué)描述方法以及坐標(biāo)變換方法。結(jié)合制造準(zhǔn)確度和協(xié)調(diào)準(zhǔn)確度的要求,介紹了位姿評(píng)價(jià)的過程。針對(duì)叉耳接頭的靜態(tài)干涉問題,提出一種基于關(guān)鍵點(diǎn)距離檢測(cè)的裝配干涉判斷方法。根據(jù)叉耳接頭上的現(xiàn)場(chǎng)裝配測(cè)量數(shù)據(jù),計(jì)算接頭在裝配坐標(biāo)系下的位姿并建立耳型接頭和叉型接頭的坐標(biāo)變換關(guān)系,通過投影方法計(jì)算并歸納出接頭的距離極值點(diǎn),求出叉耳接頭間最小距離。綜合考察各個(gè)叉耳接頭處的最小距離,判斷干涉情況,并提出在多種叉耳接頭布局方式下的機(jī)翼位姿調(diào)整方案。然后,通過仿真數(shù)據(jù)驗(yàn)證了該方法的有效性。針對(duì)叉耳接頭的動(dòng)態(tài)干涉問題,提出一種基于關(guān)鍵邊界掃略體的動(dòng)態(tài)干涉判斷方法。根據(jù)叉耳接頭上的現(xiàn)場(chǎng)裝配測(cè)量數(shù)據(jù),建立耳型接頭側(cè)面和叉型接頭端面的坐標(biāo)變換關(guān)系,分析并計(jì)算叉耳接頭關(guān)鍵邊界所形成掃略體間的干涉結(jié)果。利用仿真數(shù)據(jù),將該方法與多次干涉檢測(cè)法比較,驗(yàn)證了該方法的有效性和高效性。最后,總結(jié)了翼身對(duì)接過程中的干涉檢測(cè)及修正方法的研究?jī)?nèi)容,并對(duì)未來的研究工作進(jìn)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.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：V262;TG95

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