무인헬기용 요크 성형을 위한 공정 설계

Process Design for Yoke Forming of Unmanned Helicopter

  • 허관도 (동의대학교 기계공학과) ;
  • 김기성 (동의대학교 대학원 기계공학과) ;
  • 천세영 (한국폴리텍 7대학)
  • 투고 : 2009.07.31
  • 심사 : 2009.11.02
  • 발행 : 2009.12.30

초록

Yoke is a part of rotor in unmanned helicopter. It was transferred power of engine to the rotor. It has been usually produced by machining and used wastefully material. And it has been considered to improve its proof stress against repeated loading of the products. Therefore we studied Forging process for satisfaction of these ability and process design for yoke forming has been studied by using FE analysis. Die design and forming analysis have been performed according to the conditions such as billet volume, flash control, cavity filling, and the distribution of damage in the products. In the comparison between die forging processes, side punch effects has been investigated by considering billet dimensions.

키워드

참고문헌

  1. C. C. Chen and S. Kobayasi, 1978, "Rigid-plastic finite element analysis offing compress, Application of Numerical Method To Forming Process", ASME, AMD.Vol.28
  2. T. Altan, S. I. Oh and H. J. Gegal, 1983, Metal Forming : Fundamentals and Application, ASM, MetalsPark,OH44073.
  3. S. M. Hwang , S. Kobayashi, 1986, "Preform design in disk forging", Int. J. Mach. Tool Des. Res., Vol. 26, No. 3, pp 231-243. https://doi.org/10.1016/0020-7357(86)90002-8
  4. Yoon, J. H , Yang, D. Y., 1990, "A Three-Dimensional Rigid-Plastic Finite Element Analysis of Bevel Gear Forging by Using a Remeshing Technique", Int. J. Mech, Sci., Vol. 132, pp 277.
  5. Knoeer, M., and Altan, T., 1992, "Application of the 2D Finite Element Method to Simulation of Cold-Forging Processes", J. of Material Processing Technology, Vol. 35, pp 275-302. https://doi.org/10.1016/0924-0136(92)90323-K
  6. J. P. Tang, S. I. Oh, AFD, 1998, "An Automated Forging Design System", 16th of NAMRC, pp55-62 .
  7. D.M.C. Santos, 2005, "The development of 3D models through rapid prototyping concepts", J. of materials processing technology, Vol. 168, pp.270-272. https://doi.org/10.1016/j.jmatprotec.2005.02.220
  8. You-Min Huang, 2005, " CAD/CAE/CAM integration for increasing the accuracy of mask rapid prtotyping system", Computers in Industry, Vol. 56, pp. 442-456. https://doi.org/10.1016/j.compind.2005.01.002
  9. C. Henrard, 2005, "Comparison of FEM simulations for the incremental forming process", Advanced Materials Research, Vols.6-8, pp. 533-540. https://doi.org/10.4028/www.scientific.net/AMR.6-8.533
  10. M. Thome, 2005, "Metal flow and die filling in coining of micro structures with and without flash", Advanced Materials Research, Vols.6-8, pp. 631-638. https://doi.org/10.4028/www.scientific.net/AMR.6-8.631