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A Study on the Wear Estimation of End Mill Using Sound Frequency Analysis

음향주파수 분석에 의한 엔드밀의 마모상태 추정에 관한 연구

  • 이창희 (구미기능대학 자동화시스템과) ;
  • 조택동 (충남대학교 기계설계공학과)
  • Published : 2003.08.01

Abstract

The wear process of end mill is so complicated process that a more reliable technique is required for the monitoring and controlling the tool life and its performance. This research presents a new tool wear monitoring method based on the sound signal generated on the machining. The experiment carried out continuous-side-milling for 4 cases using the high-speed-steel end mill under wet condition. The sound pressure was measured at 0.5m from the cutting zone by a dynamic microphone, and was analyzed at frequency domain. As the cutter impacts the workpiece surface, a situation of farced vibration arises in which the dominant forcing frequency is equal to the tooth passing frequency of the cutter. The tooth passing frequency appears as a harmonics form, and end mill flank wear is related with the first harmonic. It is possible to detect end . mill flank wear. This paper proposed the new method of the end mill wear detection.

Keywords

References

  1. David A. Dornfeld, 1997, 'In Process Recognition of Cutting States,' JSME, Series C, Vol. 37, No. 4, pp. 638-650
  2. Mang, M. J., Jeong, J. K., 1995, 'A Study on the End Mill Wear Detection Using AE Signal,' 1995, KSME 1995 Spring Conference(I), pp. 394-399
  3. Lin, J., 1995, 'Inverse Estimation of the Tool-Work Interface Temperature in End Milling,' Int. J. Machine Tools & Manuf. 35(5), pp. 751-760 https://doi.org/10.1016/0890-6955(95)93043-6
  4. Sarhan, A., Sayed, R., Nassr, AA., El-Zahry R. M., 2001, 'Interrelationships Between Cutting Force Variatiion and Tool Wear in End-Milling,' J. Material Processing Technology 44, pp. 207-214
  5. Dimla E., Dimla Snr, 2000, 'Sensor Signals for Tool-Wear Monitoring in Metal Cutting Operations Review of Methods,' Int. J. Machine Tools & Manuf. 40, pp. 1073-1098 https://doi.org/10.1016/S0890-6955(99)00122-4
  6. Cha, I. H., 1980, 'An Instruction of Acoustics,' Han Sin Publishing co.
  7. Tony Schmitz, John Ziegert, 1999, 'Examination of Surface Location Error Due to Phasing of Cutter Vibrations,' Precision Engineering 23, pp. 51-62 https://doi.org/10.1016/S0141-6359(98)00025-7
  8. Ema, S., Davies, R., 1989, 'Cutting Performance of End Mills with Different Helix Angles,' Int. J. Mach. Tool Manuf. 29, pp. 217-227 https://doi.org/10.1016/0890-6955(89)90033-3
  9. Sarhan, A., Sayed, R., Nassr, AA., El-Zahry, R. M., 2001, 'Interrelationships Between Cutting Force Variation and Tool Wear in End-Milling,' J. Material Processing Technology 44, pp. 207-214 https://doi.org/10.1016/S0924-0136(00)00803-7
  10. ISO 8688-2, 1989, 'Tool Life Testing in Milling - Pat2 : End Milling'