Research on 3D complex surface construction and NC machining based on MasterCAM

Automation level of complex surface NC program is the key to the companies. As NC manufacturing technology moves forward rapidly, the NC program depending on CAD/CAM becomes more critical. MasterCAM is one of the most commonly used CAD/CAM softwares worldwide and has some comprehensive surface milling functions with a simplified, customizable interface, and abundant powerful, fast toolpath. Based on MasterCAM, the NC technology characters and CAD/CAM NC machining process are introduced. According to the basic surface frame, the construction methods of loft surface and coons surface are deeply studied by examples, the construction conditions of complex surfaces are researched, the construction skills in 3D complex surfaces are represented. A 3D craft model is built by MasterCAM, machining technology is planned, proper process methods, tool type, toolpaths and technology parameters are selected. The workpiece is well machined by NC method, and the NC code is automatically obtained at last. The machining process is correct by analyzing the computer simulation. Complex surface construction and NC program are deeply studied.