Research On The NC Programming And Automatically Manufacturing Based On UG

NC programming is one of the most beneficial taches in the CAD/CAPP/CAM system currently. The hard core of it is to create path of tool, and then distribute the path as tool references, after which the NC program is created after post process. It plays an important role in automatically manufacturing, improving precision and shortening the period of R&D.As advanced CAD/CAM/CAE software, each function of Unigraphics is highly integrated. UG CAM is the module of Computer Aided Manufacturing of UG highly integrated with the CAD module, by which we can program for milling, lathing and electrical discharge wire-cut.Although CAM module of UG has powerful function, it can only read the low-level geometrical information of the product from CAD system and can't automatically get geometrical information of the shape of the product and the high-level functional information. And the parameter setting of the manufacturing operation is a complex process. For the operator, it needs a wonderful experience of cutting, some knowledge of programming and of course some knowledge to do with the CAD modeling. So when programming in UG CAM module, there are many human-computer interfaces and lots of parameter must be indicated. This process costs much time and is adverse to the rapid manufacturing of mold.On the research to the basic principle of NC programming, the author makes a deep research and secondary development on the three types of milling in UG CAM module: planar milling, cavity milling and fixed contour milling, and the following is the results:(1) Recognition arithmetic of what type of milling should be adopted, which can read the 3D data of model before manufacturing automatically and give advices to which type of milling is proper for it among planar milling, cavity milling and fixed contour milling.(2) Research on the milling parameters of planar milling, cavity milling and fixed contour milling and predigest the setting of these parameters. This research can decrease the human-computer interface when creating operation; increase the efficiency of programming and design period of the mold.(3) Research on secondary development tools of UG software UG/Open and design the manufacturing menu and interface by UG/Open tools and VC C++ 6.0 software, which has the same style as the UG itself. The research and secondary development of NC programming and automatically manufacturing can shorten the time cost of programming, decrease settings of manufacturing parameters, extrude technical path of manufacturing, and avoid the bad affects brought by the mistake or forgotten of the operator. Also, this research can help the operators lacking of knowledge of NC programming and manufacturing machine create a program that basically fits the technical demands in a short time. It is beneficial for that new operator to acquaint themselves with the programming process in UG CAM module and master the application of CAM module. It plays a basic role for the new operator to learn how to start programming fully.