The docking of large parts is an important part of aircraft assembly. Due to the complex shape

large size and strict tolerance requirements of the docking surface of the docking joint of the frame-type wing-body

only using the posture control points as the docking datum often makes it difficult for the frame-type wing-body docking surface to match accurately. In order to obtain the optimal target posture of the framed wing-body docking

this paper proposes an optimization method for the wing-body docking posture based on the measured model. Firstly

the measured model of wing-body docking is constructed

and the initial target posture of the wing is obtained by fitting the posture control points using the weighted least squares algorithm. Then

by analyzing the wing posture constraints

a posture optimization model is established

and the particle swarm algorithm is used to solve the problem. Finally

a certain wing-body simulation part is used for application verification. The analysis results meet the requirements of relative position accuracy and coordination accuracy between wings and bodies

which verifies the effectiveness of the proposed method.