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Robust design of springback in U-channel forming using complex method  

Yin, Jeong-Je (Department of Mechanical Engineering Design, Induk University)
Kim, Kyung-Mo (School of Industrial Engineering, Kumoh National Institute of Technology)
Park, Jong-Cheon (Department of Mechanical Engineering, Kumoh National Institute of Technology)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.12, no.1, 2013 , pp. 117-125 More about this Journal
Abstract
Variations of springback in stamped parts are induced by the uncontrollable noises including the variation of incoming material properties, lubrication and other forming process parameters. Reduction of springback variation is very important during springback compensation processes on stamping dies and assembly processes. To reduce the variation of springback, a robust optimization methodology which uses complex method combined with orthogonal array is proposed. The proposed method is applied to the robust design of U-channel die for the reduction of side wall curl. It is shown that the drawbead and die radius of U-channel draw die can be effectively optimized by the proposed method.
Keywords
Springback; Sheet Metal Forming; Robust Design; Complex Method; Optimization;
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