Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Thermal Analysis for Laser Assisted Turning of Square Bar using Laser Heat Source Projection Method

사각형재의 레이저 예열 선삭에서 레이저 열원 투영법을 이용한 열해석

  • Kim, Jae-Hyun (Department of Mechanical Design and Manufacturing Engineering, Changwon National Univ.) ;
  • Choi, Jun-Young (Department of Mechanical Design and Manufacturing Engineering, Changwon National Univ.) ;
  • Lee, Choon-Man (Department of Mechanical Design and Manufacturing Engineering, Changwon National Univ.)
  • 김재현 (창원대학교 기계설계공학과) ;
  • 최준영 (창원대학교 기계설계공학과) ;
  • 이춘만 (창원대학교 기계설계공학과)
  • Received : 2011.10.12
  • Accepted : 2011.10.25
  • Published : 2011.12.01
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Abstract

LAT(Laser Assisted Turning) is a method that applies a machining process after softening a workpiece in which a preheating process is locally applied to its machining section using laser heat source. LAT shows several advantages, such as high productivity, reduction of manufacturing cost, high quality. Analysis of temperature distribution after preheating for LAT is very difficult due to its very small heat input area and large energy and its movement. Also, the LAT for a square bar is more difficult because the shape of a laser heat source can be changed according to the rotation of the workpiece. In this study, thermal analysis for LAT of square bar was performed using laser heat source projection method. And, the analysis results were compared with the results of the prior study of numerical calculation method. It is thus shown that the proposed method is efficient for the thermal analysis of a shaped bar.

Keywords

References

  1. Kim, K. S., Kim, J. H., Choi, J. Y. and Lee, C. M., "A Review on the Laser Assisted Turning Assisted Turning and Heat Treatment," International Journal of Precision Engineering and Manufacturing, Vol. 12, No. 4, pp. 753-759, 2011. https://doi.org/10.1007/s12541-011-0100-1
  2. Jeon, M. K., Kim, W. B., Han, G. C. and Na, S. J., "A Study on analysis of heat flow in laser brazing," The Korean Society of Mechanical Engineering, Vol. 13, No. 3, pp. 96-105, 1995.
  3. Kim, K. W., Jo, H. Y., Lee, J. H. and Suh, J., "Thermal analysis for surface hardening of SM45C by diode laser with different beam profiles," Proc. of Korean Society of Laser Processing Spring Conference, pp. 48-52, 2008.
  4. Cho, H. Y., Jung, S. Y., Kim, M. H., Jo, C. Y., Lee, C. Y. and Suh, J., "Finite element analysis of electron beam welding considering for moving heat source," Korean Society of Laser Processing, Vol. 4, No. 1, pp. 21-28, 2001.
  5. Lee, J. H., Shin, D. S., Cho, H. Y. and Kim, K. W., "Trends of laser integrated machine," Journal of the Korean Society for Precision Engineering, Vol. 25, No. 9, pp. 20-26, 2008.
  6. Dumitrescu, P., Koshy, P., Stenekes, J. and Elbestawi, M. A., "High-power diode laser assisted hard turning of AISI D2 tool steel," International Journal of Machine Tools and Manufacturing, Vol. 46, No. 15, pp. 2009-2016, 2006. https://doi.org/10.1016/j.ijmachtools.2006.01.005
  7. Kim, S. W., Lee, J. H., Seo, J. and Shin, D. S., "Turning of Si3N4 ceramics preheated by Laser," Proc. of Korean Society of Mechanical Engineering Spring Conference, pp. 2277-2282, 2007.
  8. Rebro, P. A., Shin, Y. C. and Incropera, F. P., "Design of operating conditions for crackfree laser-assisted machining of mullite," International Journal of Machine Tools and Manufacture, Vol. 44, No. 7-8, pp. 677-694, 2004. https://doi.org/10.1016/j.ijmachtools.2004.02.011
  9. Zhang, C. and Shin, Y. C., "A novel laser-assisted truing and dressing technique for vitrified CBN wheels," International Journal of Machine Tools and Manufacture, Vol. 42, No. 7, pp. 825-835, 2002. https://doi.org/10.1016/S0890-6955(02)00014-7
  10. Noh, J. H., Suh, J., Sohn, H. K., Shin, D. S. and Lee, J. H., "Fabrication of Superhydrophbic mold surface using laser ablation," Journal of the Korean Society for Precision Engineering Spring Conference, pp. 791-792, 2008.
  11. Kim, S. W. and Yang, C. J., "Magnetic Properties of SmCo Thin Films Grown by Using a Nd-YAG Pulsed Laser Ablation Method," Journal of Korean Magnetics Society, Vol. 10, No. 1, pp. 31-36, 2000.
  12. Kim, J. D., Kil, B. L. and Kang, W. J., "Surface Transformation Hardening for Rod-shaped Carbon Steels by High Power Diode Laser," Journal of the Korean Society of Marine Engineering, Vol. 31, No. 8, pp. 961-969, 2007. https://doi.org/10.5916/jkosme.2007.31.8.961
  13. Jung, J. W. and Lee, C. M., "A Study on the Cutting Tool and holder Deformation Prediction undergoing Laser-assisted Machining with Moving Heat Source," Journal of the Korean Society for Precision Engineering, Vol. 26, No. 9 pp. 127-137, 2009.
  14. Kim, D. H., "Laser Processing," Kyoungmoon, pp. 265-284, 2005.
  15. Ahn, S. H. and Lee, C. M., "A Study on Large-area Laser Processing Analysis in Consideration of the Moving Heat Source," International Journal of Precision Engineering and Manufacturing, Vol. 12, No. 2, pp. 285-292, 2011. https://doi.org/10.1007/s12541-011-0038-3