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| Research on Construction of Digital Twin Model and Deviation Transfer Analysis of Cabin Door of Airplane |
| WANG Zhongqi 1 , YANG Pan 1 , CHEN Shijie 1 , ZHAO Yang 1 , WU Yonglin 2 , FENG Pujia 3 , CHANG Zhengping 1 |
1. Northwestern Polytechnical University, Xi’an 710072, China;
2. SAC Commercial Aircraft International Co., Ltd., Shenyang 110165, China;
3. AVIC Shaanxi Aircraft Industry (Group) Co., Ltd., Hanzhong 723213, China |
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Abstract Aiming at the problems of difficult quality inspection and control and serious accumulation of assembly errors in the manufacturing process of civil aircraft parts, the research on deviation transmission in aircraft assembly process is carried out. Firstly, the assembly process of certain type of hatch is analyzed. Based on the MBD model, the modeling idea of digital twin model—“point cloud data reconstruction theoretical model + multi-stage derivative information mounting such as manufacturing, assembly and debugging” is proposed. The key construction technology of digital twin model for assembly process is given, and the digital twin model of a part of hatch is established. Secondly, based on the assembly characteristics of digital twin model, the Jacobian spinor model is modified through the variation relationship of key features of parts, and a deviation transfer calculation method based on digital twin is proposed. Finally, taking two parts of a mechanism assembly of the hatch as an example, the assembly deviation of the component is simulated and calculated by 3DCS software. Compared with the theoretical calculation and simulation results, the results show that the deviation transfer calculation method mentioned is effective and reliable.
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2022, 
