Development of a Round endmill Type MR Polishing System Using Neodymium Magnets

네오디뮴 자석을 이용한 라운드 엔드밀 타입 MR연마 시스템 개발

  • Received : 2011.01.14
  • Accepted : 2011.02.10
  • Published : 2011.06.15

Abstract

Recently, it has been studied machining of micro parts with increasing demands for ultra precision parts. However, many engineering problems have already begun in polishing of optical parts or lens. As a method to overcome such problems, a new technology for the polishing of the target surface is being studied by controlling abrasives using MR fluids which are sensitive to magnetic fields. Since the current MR polishing system uses a big electromagnet, and is difficult to polish micro parts or spherical lens. Therefore, in this study, a round endmill type MR polishing system was developed to polish a three-dimensional structure which has spherical or inclined plane. And then, series of experiments were performed to verify the polishing performance of the developed round endmill type MR polishing system.

Keywords

References

  1. Shin, Y. J., Kim, D. W., Lee, E. S., and Kim. K. W., 2004, "The Development of Polishing System a Magnetorheological Fluids," J. KSPE, Vol. 21, No. 7, pp. 46-52.
  2. Kordonski, W., and Golini, D., 1999, "Progress Update in Magnetorheological Finishing," Int. J. of Mod. Phys. B., Vol. 13, No. 14, 15 & 16, pp. 2205-2212.
  3. Kim, D. W., Shin, Y. J., Lee, E. S., and Cho. M. W., 2003, "The Principle of Magnetorheological Finishing for a Micro Part," Proc. the KSPE, pp. 300-304.
  4. Ahn, B. W., Lee, S. J., and Park, S. J., 2004, "Ultra Precision Polishing of Micro Die and Mold Parts using Magnetic-assisted Machining," Proc. the KSPE, pp. 1832-1835.
  5. Kordonski, W., and Shorey, A., 2007, "Magnetorheological Jet Finishing Technology," J. Int. Mat. Stru., Vol. 18, No. 11, pp. 1127-1130.
  6. Lee. J. W., Kim. D. W., Cho. M. W., Cho. W. S., and Shin. Y. J., 2008, "A Study on the Improvement in Ultra-Precision Surface of Si3N4 using $Al_2O_3$ Slurry in MR Polishing," Proc. the KSMTE, pp. 238-243.
  7. Degroote. J. E., Marino. A. E., wilson. J. P., Bishop. A. L., Lambropoulos. J. C., and Jacobs. S. D., 2007, "Removal Rate Model for Magnetorheological Finishing of Glass," App. Opt., Vol. 46, No. 32, pp. 7927-7941. https://doi.org/10.1364/AO.46.007927
  8. Kim. D. W., 2007, Development of a Ultra Polishing System using Magnetorheological Fluids and Analysis of and its Effect on Material Removal Mechanism, A Thesis for a Doctorate, Inha University, Republic of Korea.
  9. Jung. B. S., Jang. K. I., Min. B. K., Lee. S. J., and Seok. J. W. 2009, "Magnetorheological Finishing Process for Hard Materials using Sintered Iron-CNT Compound Abrasives," Int. J. Mach. Manu., Vol. 49. No. 5, pp. 407-418. https://doi.org/10.1016/j.ijmachtools.2008.12.002