A study on tool assembly algorithm of stamping forming simulation

According to the research of tool assembly of stamping forming simulation, three preconditions for effective automatic assembly algorithm were presented: consistent normal direction, distinct tool property and correct initial uniform normal direction. The automatic assembly algorithm, based on the background mesh projection, was also presented in this paper. Projected nodes of sheet and tools onto background mesh along the uniform normal direction, distributed them according to the coordinate information, calculated the minimum distance between tool nodes and sheet elements, and confirmed the distance that tools need to be moved. Ultimately, the correct assembly would be accomplished automatically. The algorithm eliminated the coupling relationship between stamping type and stamping direction, which improved the adaptability of the program and efficiency of the algorithm, and made the operation simpler. The practice in complex industry model proved the feasibility and efficiency of the new automatic assemble algorithm in this paper.