Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Development of Numerically Controlled Cushion System for Use in Deep Drawing of Sheet Metals

박판의 덥 드로잉 성형을 위한 수치제어 쿠션 시스팀의 개발

  • 이정우 (삼척대학교 정밀기계공학과) ;
  • 최치수 (기아자동차 생기연구팀)
  • Published : 2001.04.01
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Abstract

It is well known, for many years, that deep drawability can be improved by applying variable blank holding force. To apply variable blank holding force during cup drawing, we set up cushion pressure control system on the hydraulic press, and the pressure control system is often called NC(Numerically Controlled) cushion system. A cushion pressure control experiment was carried out using the NC cushion and it was shown that the proposed system produced good performance. The comparison of drawability of square cups with and without NC cushion showed that the drawability could be greatly improved when S-shaped pressure curve was applied. This paper includes design details of the NC cushion system and experimental analysis of drawability with NC cushion system.

Keywords

References

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