Study on Key Technology of Injection Mold Design for Turbine Products with Large Curvature Bowed-twisted Blades
Because of the complicated spatial structure of big curvature twist blade turbine products,the local surfaces feature multi-normal intersection properties.The essential technologies of injection mold design for supercharged turbine product in order to tackle the issues of spatial molding,parting and core extraction induced by the varied truncated surface structure of turbine blades is analyzed.The Unigraphics NX platform was used firstly for triangular mesh discretization,and then the Python language was adopted for Gaussian mapping of the discrete point normal to the blade space,establishing a mapping relationship between the dense point cloud of the blade and the Gaussian spherical normal point domain.A K-means++normal clustering and visibility analysis for Gaussian spherical data were suggested.The classification results were transferred to the blade,and cutting was employed to construct the initial composite mold inserts.As a consequence,a multi-layer flap-fitted insert assembly mechanism for injection mold and core extraction of turbine products was developed,transforming the typical three-plate mold into a four-part structure that improves design quality and automated production efficiency.