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Abstract：
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This paper deals with an investigation into the characteristics of the one-pass deep drawing spinning of cups in order to replace the traditional deep drawing and multi-path spinning processes, so that the working procedures and the manufacturing costs can be reduced remarkably. Forming conditions studied in this paper are the material property, the feed rate of the roller per revolution .f., the nominal deep drawing ratio .m., and the relative clearance between the roller and mandrel .δ.. It is thereby shown that the axial components of the spinning force .Pa. is larger than the radial components of the spinning force .Pr. in the initial stage of the forming, and reverse is true in the later stage. The variations of the nominal thickness strains .ε. are similar to those in the ordinary deep drawing except the area near the cup opening. The forming limit diagrams and the ranges of the successful spinning for various process parameters are obtained also in this paper.
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