Designing And Realizing Graphic & Image Automatic Programming System Based On PC

With spreading and applying the CAD/CAM technology, many drawing papers have been replaced by sketch&image document in computer.The Graphic&Image Automatic Programming system is that computer automatically completes basketry of NC underthe software's support according to spare parts sketch&image displaying in computer. Its characteristics are that a user can leave out the bored work that he writes and debugsthe NC program. Because the data information stream from designing part to writing NC program is continuous, it is in favor of CAD/CAM integration. It can simulate the relation between the cutter track and the part, easily discover mistake and correct it. So the reliability is greatly improved. It can shorten the part's production period, lower the production cost and increase the production automation level.Based on the technical of Visual C++ software stage, aiming at common NC machine this thesis develops the Graphic&Image Automatic Programming system. The system integrated with metal cutting database and machining simulative system, which realizes the combine of automatic programming and simulation of process.This thesis has mainly completed contents as follows:1,In the base of analyzing the Graphic&Image Automatic Programming system, develop a complete system mainframe. Make modularization design based on OOD technique Develop friendly interfaceusingVC trait.2,2D graphics and images can be drawn.3,Image edge detection and recognition.4,The pick_up and analyse for parts data have been made and craftwork decision has been made. islands and islets for milling parts problem in mould cavity have been especially made. Post process for milling parts have been realized. The cutter locus file has been made. Craftwork card of the parts has been created.5,The post processing has been completed, NC code has been created for NC system. at the same time this system has integrated with Machining Simulative System.6,The system help document has been designed. User can conveniently use it.In this system, not only 2D graphics and images can be drawn, but also Image edge can be detected and recognized.then the Programming and Machining can be completed.this system developed by Visual C++6.0 is a kind of graphic NC programming software that can be generally used in Middle and Small Corporation of China. The system, which uses menu, dialog and toolbar, has the characteristics that are friendly interface, simple manipulation, good portability, all-round function and Finer versatility. It not only can be used in fact machining, but also as CAI software in NC teaching and training. It fits the situation of our country and accords with the NC technique's latest development direction.