The pre-deformation of the blank and the machining position of the workpiece have an important influence on the final machining deformation of the workpiece. Pre-deformation of the blank and optimization of the machining position are an effective way to control the deformation of the workpiece. Due to the difficulty in solving the parameters of multi-process variable optimization

it is difficult to achieve precise control of the deformation of the workpiece only for single process optimization. Aiming at the above problems

this paper proposes a multi-process fusion structure processing deformation control method based on natural evolution strategy. Considering the influence of blank pre-deformation and machining position on workpiece variables

a finite element simulation model is established

and the optimal parameters are searched by PEPG (Parameter-exploring policy gradients) optimization algorithm to realize the control of machining deformation. Finally

a typical aircraft structural member is taken as an example to verify in the simulation environment. The results show that the method can significantly control the workpiece deformation.