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机身成龙是飞机总装工艺中的一个重要环节,各舱段对接质量直接影响到机身整体外形精度,舱段对接工序中各舱段总成定位方案的选取对于机身外形协调精度具有重要的影响;开展面向飞机机身舱段对接装配的数字化装配偏差建模研究,针对飞机舱段大部件总装对接工艺,采用确定性定位方法对相邻部段对接面位置精度进行分析,建立不同基准定位方案的装配偏差分析模型和评价指数,对比不同定位方案对于装配质量的影响;在某实际机型中后机身与后机身舱段对接协调问题中得到应用验证。
Jacket fuselage aircraft assembly process is an important part of the quality of the docking directly affects the fuselage overall shape accuracy, cabin docking process of the cabin assembly positioning program for the body shape coordination accuracy is important The paper studies the digital assembly deviation modeling of butt joint assembly of aircraft fuselage segment. According to the assembly process of assembly of large parts of aircraft cabin, the accuracy of the abutment position of the adjacent segment is determined by deterministic positioning method, and different datum positioning The analysis model and evaluation index of assembly deviation are compared to evaluate the effect of different positioning schemes on the assembly quality. In a practical model, the compatibility between the rear fuselage and the rear fuselage segment is verified.