This paper analysises the feature of NC flame cutting and how the CAD/CAM system does for it, then presents the structure of the CAD/CAM system for NC flame cutting and its key techniques.

• 分析数控火焰切割的特点及对CAD/CAM系统的要求，在此基础上介绍数控火焰切割CAD/CAM系统的构成和实现此系统的关键技术。