한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)

한국정밀공학회 (Korean Society for Precision Engineering)
권호 표지

엔드밀링에서 절삭력 방향변동에 관한 고찰

Study on the Change of Cutting Force Direction in Endmilling

  • 송태성 (영남대학교 기계공학과) ;
  • 김희술 (영남대학교 기계공학부) ;
  • 이지형 (영남대학교 대학원 기계공학과) ;
  • 고태조 (영남대학교 기계공학부)
  • 발행 : 2007.10.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

End-milling is intermittent cutting process performed by a tool with a number of teeth. Its cutting forces are commonly measured by the tool dynamometer which has rectangular coordinates. In this case, the pattern of cutting forces is different according to cutting conditions. At a certain cutting condition, the sign of cutting force changes from positive to negative during a revolution of one tooth. The change of force direction excites a cutting tool and severe vibration arises when radial depth of cut increases. In this study, cutting experiments and simulations were carried out in order to explain the cause of the change of the cutting force direction. In addition, the effect of the cutting force change was discussed in terms of chatter vibration in end milling.

키워드

참고문헌

  1. Shaw, M. C., 'Metal Cutting Principles,' Oxford Univ. Press, pp. 428-450, 1984
  2. Martellotti, M. E., 'An Analysis of the Milling Process,' Trans. of ASME, Vol. 63, pp. 677-700, 1941
  3. Tlusty, J. and Macneil, P., 'Dynamics of Cutting Forces in End Milling,' Annals of CIRP, Vol. 24, No. 1, pp. 21-25, 1975
  4. Kline, W. A. and Devor, R. E., 'The Effect of Runout on Cutting Geometry and Forces in End Milling,' Int. J. Mach. Tool Des. Res., Vol. 23, pp. 123-140, 1983 https://doi.org/10.1016/0020-7357(83)90012-4
  5. Kline, W. A., Devor, R. E. and Shareef, I. A., 'The Prediction of Surface Accuracy in End Milling,' Trans. ASME, Vol. 104, pp. 272-278, 1982 https://doi.org/10.1115/1.3185830
  6. Lee, Y. M., Song, T. S. and Sim, B. K., 'The Shear and Friction Characteristics Analysis of EndMilling,' J. of KSME, Vol. 25, No. 10, pp. 1520-1527,2001
  7. Lee, Y. M., Lee, S. H. and Tae, W. I., 'Prediction of Cutting Force in Down End Milling,' Proc. of the KSPE, pp. 907-911, 2000
  8. Lee, Y. M., Lee, S. H., Tae, W. I., Kwon, O. J. and Choi, B. H., 'Cutting Force Variation of Inconel 718 in Up and Down Endmilling with Different Helix Angles,' J. of KSPE, Vol. 18, No.7, pp. 143-148, 2001