[IEEE 2018 Global Smart Industry Conference (GloSIC) - Chelyabinsk, Russia (2018.11.13-2018.11.15)] 2018 Global Smart Industry Conference (GloSIC) - Three-Dimensional Workpiece Scanning for Technological Operation Parameters Determination in Turbine Rotor Restoration

摘要： A progressive method of turbine rotor journal restoration is machining with a direct location on a bearing bottom half. In the process, the work surface form depends on the type of rotor journal previous wear. In the previous research it was assumed that the rotor journal had the form of a cylindrical surface with a polyhedral generating line. It has been established technological operation parameters determination, for example, the tool axis installation angle, significantly depends on a form of the specified generating line. However, the real surface of a rotor journal can differ from the specified noncircular cylinder. Thus, a problem of technological operation appropriate parameters determination for various rotor journal surfaces is vital. One of the known ways of obtaining exact object surface data is the formation of a point cloud by means of a 3D scanner. The scanning result is the digital double of a workpiece surface in the form of the point cloud. So, the development of the machined surface circularity deviation calculation method, based on coordinates of a point cloud and technological operation parameters, is a relevant problem. Such methodology has been developed and forecasting of the most rational parameters of technological operation to minimize the surface circularity deviation has been conducted.