Optimization Of Ship Model NC Machine And CAM System Research

The ship model is an important tool for forecasting the sailing capability of its real prototype; it also acts as an important role in the ship research and teaching courses. As the approximately substitute of ship testing, the reliable extent of ship model is nearly correlative to its geometrical approximate characteristic. Its scale of size must satisfy a certain extent of demand. The more important things are high precision of geometrical machining and enough smoothness of underside of ship model. Otherwise it would make the error of experimental result enlarge. With the development of ships manufacturing technology, the process of ship model manufacturing puts higher demands on its method and equipments. Advanced manufacturing technologies should be introduced into the field of ship model shaping, and replace the traditional handcraft method.As the most popular information technology, Computer-aided manufacturing(CAM) breaks out the revolution in manufacturing field of various industry. CAM technology developments release the Engineers from heavy manual works and promote the Engineers to have much energy to do some creationary things. Imitative technique of CAM may use computer graphics virtually machining and observe tool motion and cutting process for roughcast. It can essentially enhance the efficiency of test and save labor force and manufacturing resource.According to the development trend of ship model manufacture, the paper puts forwards research on CAM system of ship model numerical-control milling machine. It analyzed and resolved some problem occurred in process of manufacturing ship model. The detailed task is as follows:First, the paper made an analysis of manufacturing methods for ship model and the trend of ship model manufacturing, narrated the significance of application of CAM technique for numerical shipbuilding It forwards researching CAM system and CAM submodule. Second, the paper researched the 3D software Unigraphics and its secondary development software UG/OPEN GRIP and UG/OPEN API.Third, the paper empoldered CAM software menu and introduces the methods that imitate the machining of ship model and create NC code by post processing.Last, the paper analyzed the problem occurred in process of manufacturing ship model, for example, cutting-collision, the deficiency of manufacturing method and mechanical framework. It forwards the measure to resolve the problem, and narrates the development trend and targets of the CAM system of the ship model numerical-control machine.