Integral thin-walled structural parts are widely used in the aerospace field. However

the stiffness of the thin-walled parts is poor

and machining deformation is easy to occur

resulting in low production efficiency and product qualification rate. In order to control the machining deformation of the trapezoidal frame thin-walled parts

the effects of inside-out

outside-in

parallel and zigzag tool paths on machining deformation were studied by using Python scripts and element birth-death technique-based simulation method. Simulation and experimental results show that small machining deformation can be obtained by using the outside-in path. In addition

under the strategy of outside-in tool path

cutting from the small end of the workpiece can reduce the maximum machining deformation and average deformation of the workpiece. Finally

an optimized tool path strategy for machining deformation control of the trapezoidal frame thin-walled parts was recommended.