Development on the CAD System for Manufacturing Data Sets of Sheet Metal

The methods of parameterized modeling and curved edge angle quick tagging based on the further devel-opment of CATIA (computer aided tri-dimensional interface application) are proposed to solve the design of manu-facturing data sets, such as the low efficiency and high error rate for 3 D modeling in manufacturing data sets and engineering drawings informations' labeling of sheet metal parts. The geometric model for process lug is established through constraining the coordinates sizes of key points on the contours of the process lugs; the angles of the sheet metal part's curved edge which will be tagged on the curved edge by invoking CAA (component application archi-tecture) functions, are calculated through the methods of cut plane; in 2D data sets design 3D process information are obtained in the structure tree and marked in the engineering drawing. The software of the quick design for man-ufacturing data sets of sheet metal was completed, which has been integrated into the environment of CATIA and it has been successfully applied in the number of aviation enterprise.