Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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A Study on the Development of Multi Facet Drills and Evaluation of Performance

다면드릴의 개발 및 성능평가에 관한 연구

  • 손황진 (창원대학교 대학원 기계공학과) ;
  • 양순철 ((주)윈트) ;
  • 황종대 (창원대학교 대학원 기계공학과) ;
  • 정윤교 (창원대학교 기계공학과)
  • Received : 2009.03.24
  • Accepted : 2009.06.22
  • Published : 2009.06.30
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Abstract

Drilling operation is such an important machining process, which has been wildly applied to the industry, occupied over 30% of whole industry. However, there are many aspects of drilling process should be improved, such as increases of thrust force, surface roughness, and roundness, ect. In this study, we are aiming to reduce the thrust force, surface roughness, and roundness in drilling process. For this purpose, multi facet drills (MFD) of three types that are modified from standard drill (STD) are developed. The first type is multi stair drill (MSD) with shape of stair on relief plane. The second type is rough facet drill (RFD) with shape of round on relief plane. The third type is rough flute drill (RFLD) with shape of round on flute plane. For three types of MFD, we were carried out performance evaluation from the perspective of thrust force, surface roughness and roundness of machined hole. From obtained result, we could confirmed that performance of rough flute drill (RFLD) type is most excellent.

Keywords

References

  1. 전언찬, "초경 Step Drill의 절삭성에 관한 연구 " 한국정밀공학회 춘계학술대회논문집 pp. 1063-1067, 1997.
  2. Fugelso, M. A., "Cylindrical Flank Twist Drill Points," ASME, Journal of Engineering for Industry, Vol. 105, pp. 183-186, 1983. https://doi.org/10.1115/1.3185886
  3. Williams, R. A., "A Study of the Drilling Process," ASME, Journal of Engineering for Industry, Vol. 96, pp. 1207-1215, 1974. https://doi.org/10.1115/1.3438497
  4. Anish Paul, Shiv G. Kapoor, "Chisel edge and cutting lip shape optimization for improved twist drill point design" International Journal of Machine Tools Vol. 45, pp. 421–-431, 2005. https://doi.org/10.1016/j.ijmachtools.2004.09.010
  5. Selvam, S.V.M., and Sujatha, C., "Twist Drill Deformation and Optimum Drill Geometry," Comp. Struct., Vol. 57, pp. 903-914. 1995. https://doi.org/10.1016/0045-7949(94)00615-A
  6. Wu, S.M., and Shen, J.M., "Mathematical Model for Multifacet Drills," ASME, Journal of Engineer ing for Industry, Vol. 105, pp. 173-181, 1983.
  7. Huang, H.T., and Weng, C.I., "Prediction of Thrust and Torque for Multifacet Drills (MFD)," ASME, Journal of Engineering for Industry, Vol. 116, pp. 1-7, 1994. https://doi.org/10.1115/1.2901805
  8. Huang, H.T., and Weng, C.I., "Analysis of Clearance and Rake Angles Along Cutting Edge for Multifacet Drills (MFD)," ASME, Journal of Engineering for Industry, Vol. 116, 8-15, 1994. https://doi.org/10.1115/1.2901814
  9. Yan, B.H., and Wang, G.C., "A New Mathematical Model for Multifacet Drills Derived by Using Angle-solid Model," International Journal of Machine Tools & Manufacture Vol. 41 pp.103–-132, 2001. https://doi.org/10.1016/S0890-6955(00)00053-5
  10. Chen, W.C., and Wang, G.C., "Design Optimization of a Split-point Drill by force Analysis," Journal of Materials Processing Technology Vol.58, pp. 314-322, 1996. https://doi.org/10.1016/0924-0136(95)02156-6
  11. 이상조, "다면드릴의 성능 해석과 최적화" 대한기계학회논문집 제14권, pp. 1523-1532, 1990.