소성∙가공 (Transactions of Materials Processing)

한국소성∙가공학회 (The Korean Society for Technology of Plasticity and materials processing)
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드로우비드 성형시 박판재 마찰계수 영향인자 해석

Analysis on Parameters Affecting the Friction Coefficient in Drawbead Forming of Sheet Metal

  • 김원태 (부산대학교 정밀기계공학과/정밀정형 및 금형가공연구소) ;
  • 이동활 (부산대학교 정밀기계공학과/정밀정형 및 금형가공연구소) ;
  • 서만석 (현대자동차(주) 프레스 금형부) ;
  • 문영훈 (부산대학교 정밀기계공학과)
  • 발행 : 2005.11.01
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초록

In sheet metal forming, drawbeads are often used to control uneven material flow which may cause deffets such as wrinkles, fractures, surface distortion and springback. Appropriate setting and adjusting of the drawbead force is one of the most important parameters in sheet forming process control. Therefore in this study, drawbead friction test with circular shape bead was performed at various sheets, lubricants(dry, three kinds of lubricants having different viscosities), bead materials and surface treatments of bead surface. The results obtained by drawbead friction test show that the friction and drawing characteristics of deforming panels were mainly influenced by strength of sheet, viscosity of lubricant and hardness of bead surface.

키워드

참고문헌

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피인용 문헌

  1. Contact Pressure Effect on Frictional Behavior of Sheet Steel for Automotive Stamping vol.20, pp.2, 2011, https://doi.org/10.5228/KSTP.2011.20.2.99