In the aerospace field

thin-walled structural parts are connected and assembled with extremely high precision

the holes for the connections therefore have high tolerance requirements. Due to its low stiffness

there is a great deal of deformation and vibration in the drilling process

which seriously affects the drilling precision and quality. Aiming at the problems of large clamping span

insufficiency and difficulty in effectively supporting the aircraft wing box and other components in the traditional clamping method

this paper proposes to improve the local stiffness during the drilling of thinwalled structural parts through the positive adsorption auxiliary support

which in turn improves the drilling quality of the thin-walled structural parts

and investigates the effect of positive adsorption auxiliary support on the drilling of the thinwalled structural parts through the combination of simulation and experiments. The results show that under the simulation and experimental conditions in this paper

the positive adsorption auxiliary support can improve the stiffness of the drilling position by more than 40 times

reduce the roughness of the hole wall by more than 67%

reduce the roundness tolerance by more than 60%

reduce the deviation of the hole entrance and exit diameters by more than 90%

and reduce the aperture deviation by more than 50%

so that the positive adsorption auxiliary support can significantly improve the precision and quality of the thin-walled structural parts.