DOI QR코드

DOI QR Code

A Study on Extrusion Process of Cylindrical Product with Helical Fins Using Rotating Extrusion Die

회전압출다이를 사용한 헬리컬 핀붙이 원형단면 제품의 압출가공에 관한 연구

  • Published : 2005.08.01

Abstract

A new extrusion process of the circular section product with helical fins could be developed by rotating extrusion die. The twisting of extruded product is caused by the twisted conical die surface connecting the die entrance section and the die exit section linearly. But, until now, because the process has used fixed extrusion die, it needs high pressure in order to twist billet and form fin shape on the surface of billet. So, during extruding billet, in order not to twist billet, the extrusion die is needed to rotate itself instead of twisting of billet. It is known that it is possible to reduce extrusion load of product with helical fins by analysis and experiments using rotating die. And it is known that, through the extrusion load analysis by $DEFORM^{TM}-3D$ software, optimal rotational velocity of rotating die can be obtained according to reduction ratio of area and twisted angle of die. And experiments and analysis using rotating extrusion die show that the twisted angle of product can be controlled by twisted angle of extrusion helical die and the rotational velocity of extrusion helical die.

Keywords

References

  1. 권혁홍, 1993, 합금강의 냉간압출에 의한 고정밀도 헬리컬 기어의 제조에 관한 연구, 부산대학교 박사학위 논문
  2. 최재찬, 조해용, 권혁홍, 1991, 냉간단조에 의한 헬리컬 기어의 새로운 성형방법과 상계해석에 관한 연구, 단조심포지움'91, 한국소성가공학회, pp. 40-51
  3. 김한봉, 진인태, 1999, 원형빌렛으로부터 나선형 사다리꼴 핀은 가진 제품의 비틀림 압출가공법에 관한 연구, 한국 소성 가공학회지 Vol. 8, No2, pp. 143-151
  4. 박대윤, 진인태, 2001, 상계해법에 의한 원형빌렛으로부터 인볼루트 헬리컬 핀을 가진 제품의 비틀림 압출가공법에 관한연구, 한국소성가공학회지 Vol.10, No.4, pp. 302-310
  5. D. Y. Yang, M.U. Kim, C.H. Lee, 1978, An Analysis for extrusion of helicals hapes from round billet, Int.J.Mech. Sci. 20, pp. 695-705 https://doi.org/10.1016/0020-7403(78)90056-5
  6. D. Y. Yang, 1986, Analytical and Experimental Investigation Into Lubricated Three - Dimension Extrusion of General Helical Sections CIRP, Vol.15/1, pp. 169-172
  7. Toshihiro Imai, Manabu Kiuchi, Tsuyoshi Muramatsu, 1991, Analyses of Helical Shaped Extrusionl, Journal of the JSTP, Vol.32, No. 370, p. 1403
  8. 박승민, 진인태, 2004, 회전압출다이를 이용한 헬리컬 핀붙이 원형단면 압출가공에 관한 연구, 한국소성가공학회, 춘계학술대회 논문집, pp. 31-34