A study on the deformation of thickness by drawing process of upper housing products

Upper housing 제품의 드로잉공정에 의한 두께 변형 고찰

  • Lee, Beom-Soon (Department of Mechanical Engineering, Kongju National University) ;
  • Kim, Ok-Hwan (Department of Mechanical Engineering, Kongju National University)
  • 이범순 (공주대학교 기계공학과) ;
  • 김옥환 (공주대학교 기계공학과)
  • Received : 2019.02.15
  • Accepted : 2019.03.31
  • Published : 2019.03.31

Abstract

For manufacturing upper housing product of mechanical control valve, the progressive drawing process was conducted experimental. Then, the center of the product was cut to measure the thickness of the product. As a result, the following conclusions were obtained. By means of a stand-alone pad provided with sufficient pressure, it is possible to prevent the occurrence of wrinkles in the die pad product of the drawing process. As a result of the experiment, it was considered that the flange bottom of the product and the lower edge of the product are made thick in thickness, the top edge and the top surface are thin. It is considered that this is due to the size and roughness of the entrance edge radius of the die in the drawing process, and the inflow of the material by the die pad.

Keywords

References

  1. Lee, Ki-Sung, Investigation of Deep Drawability and Product Qualities of Ultra Thin Sheet Metal
  2. Sa-Rang Lee, Sang-Min Park, Seokmoo Hong, "Optimization of Initial Blank Shape of Multi-stage Deep Drawing for Improvement of Formability", J. Korea Academai-industrial cooperation Society, Vol, No. 10, pp. 696-701, 2016.
  3. Chun kyu Lee, Seung-Done Nam, "A Study on the Influence of the Integrated Structure and Independent of the Die Pad on the Products thickness in the Drawing Process", J. Korea Saf. Manag. Sci., Vol. 15 No. 2, June 2013.
  4. Chun-Kyu Lee, Kye-Kwang Choi, "A study on the design and manufacture of test work drawing die" J. Korea Society of Die & Mold Engineering, Vol.12 No.1, 2018.
  5. Chun-Kyu Lee, Young-Choon Kim, "A study on Changes in Thickness of STS304 Material in the Progressive Drawing process" Arch. Metall. Mater. 62, 2B, pp. 1319-1323, 2017. https://doi.org/10.1515/amm-2017-0201
  6. Chun-Kyu Lee, "A Study on Material thickness variation of the circle formming shape for installing PCB", Journal of the Korea Academia-Industrial cooperation Society, pp. 3667-3671, 2015.