Intelligent detection method for judging forming defect of stamping part blank contour deviation

• Main Authors: SONG JIAWANG, LI JINZHAO, MA PINKUI, ZHAO PO, WANG GUIYING, GUAN XIAOFANG, GUAN ZHIPING, LI YING, REN MINGWEN, YU YONGSEN
• Format: Patent
• Language: Chinese; English
• Published: 04.04.2023
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention discloses an intelligent detection method for judging forming defects of stamping part blank contour deviation, and belongs to the field of plate forming quality detection.The method comprises the steps that the offset of blank contour feature points in a defective state and the offset of blank contour feature points in a defect-free state are obtained through a finite element simulation stamping process; a training data set and a verification data set are obtained after defect types are manually marked, and a BP neural network model is constructed according to the training data set and the verification data set to obtain a defect detection model. And in a stamping site, laser ranging is adopted to measure the offset of the blank contour feature points in the material inflow direction after actual stamping, the offset is input into the BP neural network defect detection model, and a defect judgment result is output. The method disclosed by the invention greatly relieves the manual dependence of