Research On High Efficiency Multi-axis Processing And Programming For Booster Impeller

The application of multi-axis CNC processing, the predicted tendency of surface machining, represents a nation’s manufacturing level. The research on multi-axis high efficiency processing Booster-impeller, typical sculptured surface parts can promote national-defense and energy power, thus can contribute to the development of a country with strong manufacturing industry.To optimize multi-axis processing of Booster-impeller, the author studies theories of impeller surface modeling optimizing, multi-axis process planning, 5-axis tool-path generating, and impeller measuring Based on these studies, the author presents a multi-axis high efficiency machining method through practices.By studying the relation between CAD and CAM, the paper improves the quality of impeller surfaces with the parameter optimization method of 3-order B-spline surface modeling; these new surfaces are then used to rebuild the impellers’ parameterized geometrical model. Through trial and error, the author obtain a smoother impeller model after defining a standard in CAM programming system to evaluation the quality of impeller surface.To solve the problems of machining efficiency, the paper offers two 5-axis high efficiency roughing methods with analyzing impellers’ structural features. Taking account of the methods’ deficiency in practices, the author designs and optimizes the finishing process of impellers, therefore complete a multi-axis machining processing design.According to studying the errors during the multi-axis machining process of the impeller, this paper models and analyzes 5 different critical errors and compensates for them. The RTCP programming of impeller’s multi-axis processing be realized by developing special postprocessor based on deducing the RTCP algorithm. The author discusses the influences of among the process parameters,the machining quality, efficiency, to plan the efficiency machining path, then makes a simulation and optimizes itBased on the above study, booster-impeller can be machined with high efficiency multi-axis processing. The results of the machining verified by CMM prove that the methods of process and programming presented in this paper are effective and efficient.