The Design and Realization of Steam Turbine Blade CAD/CAM System

The turbine blade is a key component in the operation of the steam turbine hence the design and manufacturing level of the blade will directly affect the performance and efficiency of the turbine. CAD/CAM has been the foundation and important part of advanced manufacturing technology. It is important to study the steam turbine blade integrated CAD/CAM system to improve the design and manufacture of the blade. In this paper, the structure of CAD/CAM system for steam turbine blade is studied and the extensible framework structure including user layer, functional layer and system layer is proposed. Based on the control points of the turbine blade profile design method, and based on the expression between the three-dimensional parametric vector modeling method in UG-based platform, the use of UG/Open development tools and Visual C # developed a turbine blade CAD system. Under the UG/CAD module, the three-dimensional geometric model of the turbine blades with the same topology can be quickly generated by setting the parameters. Using the CAM module in UG, the process design and machining process simulation of steam turbine blade are carried out for the actual five-axis CNC machine for blade milling process, the simulation process and generation of the turbine blade CNC machining code is done. The steam turbine blade CAD/CAM system developed in this paper can solve the problems of traditional steam turbine blade design and manufacturing efficiency, improve the design and manufacture quality of turbine blades, and reduce the product development and processing cost.