Assembly hole processing features are basic and important for the off-line programming system of aircraft automated assembly. In order to solve the problem of information source of assembly hole processing features

the characteristics of feature technology and the model-based definition (MBD) technology in digital assembly are illustrated. Then

a quickly adding technology for the assembly hole processing features is proposed

in which MBD technology and feature technology is integrated. After that

the modeling characteristics of the aircraft skin product are represented. With the MBD model as basic unit

an information model of the product processing features is constructed by processing features in which geometry and process information of the model is combined. To realize the quickly adding technology on product analog

the function module of information adding on DELMIA V5 has been developed for CAD digital models. Finally

the information model of the product processing features is established. The model provides good data source for aircraft automated assembly off-line programming system and realizes the CAD/CAM/CAPP system integration and data sharing.