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Research of Spreading Method for Box Rib Sheet Metal Parts

WU Jianjun,ZHANG Shunying,ZHANG Shen(The Key Laboratory of Contemporary Design and Integrated Manufacturing Technology,Ministry of Education,Northwestern Polytechnical University,Xi'an 710072,Shanxi China)  
Against some problems such as concave feature and opened side walls in the spreading process of sheet metal parts,a new hybrid approach has been developed to avoid the element overlap and wrong spreading direction by combining the advantages of orthogonal length development method and radial spreading approach based on normal vector.Through practical application,the approach has been approved to be efficient.The obtained blank is more reasonable in shape.
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