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http://dx.doi.org/10.3795/KSME-A.2003.27.8.1287

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

Lee, Chang-Hee (구미기능대학 자동화시스템과)
Cho, Taik-Dong (충남대학교 기계설계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.27, no.8, 2003 , pp. 1287-1294 More about this Journal
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
End Mill; Cutting Sound; Flank Wear; FFT; Harmonic; Tooth Passing Frequency;
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  • Reference
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