Study on a New Data Interface of CAM/CNC System Based on STEP-NC

In order to solve the problems of the poor interaction between CAM and CNC system and other key technologies in the process of inputting STEP-NC file to NC machining,an interface embedded CAM/CNC system based on STEP-NC was researched.The STEP-NC documents data format was changed to the chain structure by this interface before the STEP-NC file was put into NC system.The meanings were that the good operational chain could lay a solid foundation for information extraction,tool path planning and other CAM functions implementation in CNC system,and the interactive capability and efficiency of each functional module inside the system were improved.By adding and deleting functions of chain,the on-site operators to modify program content was allowed at any time,according to the on-site conditions and practical experience(such as the arrangement of the process,tool moving path,cutting tool and cutting dosages and etc.),and the modified NC program was feedback to the upstream of design department.The CAD/CAM/CNC integration systems which were researched in the world for implementing intelligent CNC system level were introduced.