Research And Application Of Intelligent Nc Programming System Based On The Gt And Kbe

With the development of science and technology, CNC technology has been used more and more popular. It has changed the manufacturing process, its effect and influence become greater. At the same time, enterprise has higher requirements for CNC technology. As one important part of cnc technology, CNC programming technology could improve the production technology level to a large degreeAt present, there are several problems in CNC Programming when enterprise uses the traditional CAM system (such as UG), such as repetitive work, require high programming experience knowledge, the programming system has complicated operation and tool path forms is restricted. These problems decrease the programming efficiency rate, impact the programming quality.In view of the above problems, this paper analyzed the enterprise demand, then constructed the system framework of intelligent programming system based on GT and KBE, and designed the function module of intelligent programming system, and then established the frame model of knowledge based system for complicated components. In order to realize a highly effective, accurate and quickly intelligent CNC programming system, this paper did some exploratory work. Its main content and contributions are as follows:(1) Based on the analysis on the CNC programming parameters setting, the application of cascading group technology is proposed for the first time, then it is researched in detail in CAPP/CAM system, and a cnc programming flow was designed based on it.(2) In order to make CNC programming driven by knowledge, aimed at the characteristics of CNC programming field knowledge, the application of knowledge-based technology in CNC programming was studied, including knowledge representation in the field of CNC programming, knowledge acquisition and knowledge reasoning.(3) Taking complex components of marine diesel as objects and summarized its manufacturing feature and tool path pattern. It has a research on manufacturing feature recognition, manufacturing feature processing and tool path planning based on manufacturing feature, and analyzed the mapping relationship between feature, tool path and process.On the basis of the above research results, the intelligent programming system based on GT and KBE was developed by using UG/Open, VC++ 6.0 and SQL Server 2000. And cases of CNC programming for complex components of marine diesel have been illustrated to validate the effectiveness of the above-mentioned research contributions and the practicality of the system.