Automated EDM of Film Cooling Holes Based on 3D Model of Blade
The automated information extraction method and implementation algorithm for film cooling hole machining were researched,and a software package was developed.This software is designed for the automated extraction of machining information pertaining to film cooling holes.The foundation of this endeavor lies in the utilization of 3D models of turbine blades within UG NX software.The software package seamlessly integrates a range of critical features,including the automatic extraction of the film cooling hole axis deviation angle and machining positions,adaptive alignment in different coordinate systems,automatic output of blade posture adjustment angles,as well as coordinate value transformations.It also encompasses the hierarchical acquisition of information regarding the diffusion holes and depth of cylindrical holes,automatic compensation for tool electrode radius and discharge gap,and the optimization of scanning machining paths.The automated machining process for the combined technique of diffusion holes through EDM scanning and high-speed drilling of round straight holes was realized.Experimental validation confirmed the practicality of this method and its implementation algorithm.
film cooling holescoordinate transformationEDMscanning
万方数据
维普
