3D Reverse Rebuilding on Main Part of Stamping and Welding Pump

Stamping and welding pump which made of stainless steel is a new kind of highly efficient,energy-saving,environmental protection,multi-stage centrifugal pumps,research about it is still at a preliminary stage. Trough collecting the image data to the visual surfaces of a stamping and welding pump impeller,a huge amount of point cloud data was obtained at first. On Pro /E 5. 0,pre-processing such as deletion outliers,noise processing,streamline,segmentation and reassembly,feature extraction and curves generating,and vectorization sort were executed to the point cloud. Envelope characteristic operation such as envelope,initial adjustment of small plane,removing the web,and small plane fine-tuning were also executed. Small plane feature processing including relaxation and generating manifolds,NURBS curve generating and surface reconstruction,were also executed. The threedimensional model of the main piece of the stamping and welding pump impeller were reconstructed by completely reverse method at first,and method combining reverse extraction and forward design which include processing such as generating internal and external contours,blade profile,surface model,and materialization at last.