In this paper

augmented reality (AR) is combined with 3D digital technology and artificial intelligence (AI) to realize the operation guidance

information perception and error prevention of assembly site. Firstly

based on the characteristics of manual assembly

the composition architecture and application mode of the AR intelligent assembly assistance system are proposed

and then 3D digital assembly process modeling

on-site AR registration/tracking/ fusion display

and AR real-time images are used to extract assembly feature information through AI image processing algorithms. The AR auxiliary assembly prototype system was developed based on the system composition framework and key technologies

and the application verification was carried out with the aeroengine assembly as the object. The results show that AR aided assembly can solve the problems of operation prompt

target recognition

operation guidance and error prevention in manual assembly of complex products.