Abstract
This paper examines the role of drawbead design within tooling design and stamping engineering, as a system. A microcomputer based program DRAWBD is used to illustrate the effect of tooling adjustments beyond and within the trim line, the variability of material and lubricant on the part thickness, as well as stress and moment distributions.
The paper illustrates that the interactions between the different tooling and operational parameters are very complex, and demonstrates the difficulty in troubleshooting drawbead controlled stamping systems. The conclusion is that the goal in stamping should be to maintain control over the tooling, process, and material windows, and accordingly over uniformity and consistency of interacting parameters.
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Karima, M., Tse, W. Formability and uniformity aspects in drawbead controlled geometries. J. Materials Shaping Technology 6, 181–193 (1989). https://doi.org/10.1007/BF02833770
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DOI: https://doi.org/10.1007/BF02833770