关键词: 飞机装配, 数字化制造, 位姿调整, 冗余并联机构, 柔性多体动力学

Abstract: To guarantee the quality and reliability of large aircraft components alignment, the dynamic model of alignment mechanism was constructed and the whole alignment process was simulated. According to characteristics of pose alignment mechanism, support bars of 3D actuators were considered to be flexible bodies, and the dynamic model of pose alignment system was established by utilizing Lagrange equation, virtual work theory and Lagrange multipliers method. Through numerical solution, the joint reaction forces of aircraft component and supporting poles were acquired. Simulation example was presented to demonstrate the correctness and effectiveness of proposed dynamic model. In addition, this dynamic model also provided powerful basis for the automatic control of posture alignment process.

Key words: aircraft assembly, digital manufacturing, pose alignment, redundant parallel mechanism, flexible multi-body dynamics