Research Of Virtual NC Machine Tool And Open NC System

With the fast development of the computer technology, communication technology, multimedia technology, graph and picture technology and visualizing technology, the virtual prototyping, virtual design and virtual manufacturing based on the virtual reality technology, have been used in the realizing production. Virtual manufacturing system is the entire map of the fact manufacturing system to the information world in which the resource and energy would not be consumed. It uses the information technology, emulating technology and computer technology to emulate the human, substance, information and the manufacturing course in the fact manufacture action. The precaution is used before the fact product is manufactured. So the product can be successfully manufactured at first. The cost can be reduced, the exploitation period can be shortened and the competition capability of the product can be strengthened.Virtual NC machine tool is an important part of the virtual manufacturing system. The machine course emulating of the NC machining which is achieved by the Virtual NC machine tool, offers the kernel data for the manufacture of the product design. This project is an important part of the teaching System of Engineering Teaching Center of Sichuan University. For taking advantage of limitedresource and make the students to know about the advanced technology------virtualmanufacturing technology, the Engineering Teaching Center puts forward the research of virtual NC lathe. This text requires for researching the principle of virtual NC machine, the principle of NC lathe and actualizing the process emulatingof virtual NC lathe. This system can be used in actual manufacturing, emulating NC process and teaching. Open NC system is a prominent field in today's NC technology. The open NC system also has been researched. This text has researched as follows:1. After researching the virtual manufacturing system in the inland and foreign land, we have researched the feasibility of the virtual NC machine tool and analyze the principle of virtual NC machine which consists module, kernel technology, environment structure, and system structure.2. We have researched the principle of virtual NC lathe and the kernel technology of virtual environment, put forward neoteric lathe process imitate method. It's means that we use the planar graph combining method to actualize the imitation.3. We have researched the planar graph combining algorithm and realized the three-D by planar graph. We also have researched the COM technology. And we have designed the COM module of planar graph combining algorithm.4. We have used OpenGL and OOP technology to realize the main model of virtual NC lathe environment which include the model of the tool, tip, workpiece and the three-claw cartridge.5. We have designed the software system structure of virtual NC lathe, realized the NC code editor and experimentation archetype system of virtual NC lathe. This system can be used in actual manufacture, imitate NC process and teaching.6. We also have researched the open NC system as well as roundly discussed the essence, peculiarity and several actualization form of open NC. The CJK6132A lathe close-loop NC system's open peculiarity has been researched.