Abstract. In order to solve the automatic signature graving programming of part in small product customization, the method of automatic generating based on Edgecam software was introduced. Firstly, the intelligent systematic ideas in Edgecam is proposed, then, the transformation algorithm for digital image processing was constructed, the key technology of signature graving and CNC programming were studied, the program was written in VB.NET, PCI, PDI and other secondary development languages in Edgecam, finally, the case study used in typical signature graving with the proposed method, which provides reference for the other engraving intelligently and rapidly in other product.

A folding wing is a tactical missile launching device that needs to be miniaturised to facilitate storage, transportation, and launching; save missile and transportation space; and improve the combat capability of weapon systems. This study investigates the aeroelastic characteristics of the secondary longitudinal folding wing during the unfolding process. First, the Lagrange equation is used to establish the structural dynamics model of the folding wing, the kinematics characteristics during the deformation process are analysed, and the unfolding movement of the folding wing is obtained using the dynamic equations in the process. Then, the generalised unsteady aerodynamic force is calculated using the dipole grid method, and the multi-body dynamics equation of the folding wing is obtained. The initial angular velocity required for the deployment of the folding wing is analysed through structural model simulation, and the influence of the initial angular velocity on the opening process is studied. Finally, aeroelastic flutter analysis is performed on the folding wing, and the physical model of the folding wing verified experimentally. Results show that the type of aeroelastic response is sensitive to the initial conditions and the way the folding wing opens.