Abstract
Reducing the thickness of metal sheets causes a marked decrease in microscale/mesoscale deep drawing rates. This study examined the influences of a drawing punch with a microridged surface on the deep drawing of stainless steel. First, this study proposes a novel drawing punch design with microridges on the surface neighboring the punch nose for deep drawing processes used in the manufacture of stainless steel cylindrical cups. Subsequently, the microridged drawing punch design geometric variables were tested based on the Taguchi method. Moreover, Abaqus simulation software and an ANOVA analysis were employed to determine the combination of design variables that produced the minimal thinning rate. Finally, a drawing die was designed, produced, and employed to confirm the analysis results. The test and simulation results were highly consistent, where the significance at which the geometric variables influenced the thinning rate was, in order of significance, the ridge nose radius, ridge-to-punch nose distance, ridge height, and ridge distance. The microridged design increased the forming force of deep drawing by only 7 %; however, it increased the forming depth by more than 60 % when compared to a nonridged drawing punch.
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Lin, BT., Yang, CY. Applying the Taguchi method to determine the influences of a microridge punch design on the deep drawing. Int J Adv Manuf Technol 88, 2109–2119 (2017). https://doi.org/10.1007/s00170-016-8911-y
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DOI: https://doi.org/10.1007/s00170-016-8911-y