关键词: 制造准确度, 装配误差, 对接深孔, 最优位姿, 粒子群算法

Abstract: To ensure the manufacturing accuracy and the coordination accuracy of deepholes in the large aircraft assembly process,an optimized posture evaluation method was proposed.The optimized posture evaluation model was established to minimize assembly error with tolerance requirements,which were made of 3D deviation of manufacture points and relative position deviation of coordination deep holes.The model was solved by Lagrange multiplier and the particle swarm optimization method,and its initial value was provided by Singular Value Decomposition(SVD) method.The optimized position and orientation of large component was obtained,which satisfied the tolerance requirements and minimized the deviations of deep holes in its axis direction.The simulation case showed that the proposed method could coordinate the deviations of deep holes by comparing with the traditional SVD-based evaluation method.

Key words: manufacture accuracy, assembly error, deep-hole butt joint, optimized posture, particle swarm optimization