Abstract: Hole machining processing is the main method of composite hole forming, which is one of the most important factors in the passing rate of the composite products. This paper focuses on the design of hole in composite materials, there are many factors need to be considered: composite structure, structure quality and raw materials, and the choice of the process. Then the influencing factors of composite hole quality also be discussed, which include tooling, cutting tools, human factors and maintenance.

Key words: composite products, design, hole machining