Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Thickness Distribution of Hemispherical Cup in Meso-Scale Deep Drawing Process

반구형 극소 드로인 제품의 두께분포 비교

  • 이기성 (서울과학기술대학교 산업대학원 정밀기계공학과) ;
  • 정효기 (서울과학기술대학교 제품설계금형공학과) ;
  • 김종봉 (서울과학기술대학교 자동차공학과) ;
  • 김종호 (서울과학기술대학교 제품설계금형공학과)
  • Received : 2010.12.27
  • Accepted : 2011.01.24
  • Published : 2011.02.01
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Abstract

Meso-scale or micro-scale forming of sheet metal parts has been recently considered as one of the important forming technologies with growing demand on meso/micro products for electric or medical devices. Experimental investigation on the cylindrical meso-cup drawing with hemispherical punch is carried out to examine the limit drawing ratio and thickness distribution of drawn cups. The working parameters chosen in this study are blank diameter, die-corner radius and blankholding force. It is found from the experiments that the limit drawing ratio of 2.4 can be achieved in the case of hemispherical cup drawing and uniform thickness distribution in wider region can be obtained compared with the results of conventional cup drawing.

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References

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  1. Influence of Drawing Speed and Blank Holding Force in Rectangular Drawing of Ultra Thin Sheet Metal vol.21, pp.6, 2012, https://doi.org/10.5228/KSTP.2012.21.6.348
  2. Formability and Dimensional Characteristics of Stretch-Drawn Beryllium-Copper Sheet Products vol.20, pp.5, 2011, https://doi.org/10.5228/KSTP.2011.20.5.357