대한기계학회논문집A (Transactions of the Korean Society of Mechanical Engineers A)

  • 제27권8호
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  • Pages.1287-1294
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  • 2003
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  • 1226-4873(pISSN)
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  • 2288-5226(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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음향주파수 분석에 의한 엔드밀의 마모상태 추정에 관한 연구

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

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

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.

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참고문헌

  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
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  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
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  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'