Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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The Vibration Measurement of Boring Process by Using the Optical Fiber Sensor at inside of Boring Bar

광섬유 센서의 보링 바 삽입에 의한 진동측정

  • Song, Doo-Sang (Department of Mechanical Engineering, Graduate School, Chung Nam Univ.) ;
  • Hong, Jun-Hee (Department of Mechanical Engineering, Chung Nam Univ.) ;
  • Guo, Yang-Yang (Department of Mechanical Engineering, Graduate School, Chung Nam Univ.)
  • 송두상 (충남대학교 대학원 기계공학과) ;
  • 홍준희 (충남대학교 기계공학과) ;
  • 곽양양 (충남대학교 대학원 기계공학과)
  • Received : 2010.11.01
  • Accepted : 2011.03.23
  • Published : 2011.06.01
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Abstract

Chattering in cutting operations are usually a cumbersome part of the manufacturing process in mechanical. Particular, machining performance such as that of the boring process is limited by cutting condition at the movable components. Among various sources of chatter vibration, detrimental point in cutting condition is found a mechanical condition on overhang. It limits cutting speed, depth, surface roughness and tool wear failure as result because the all properties are varying with the metal removal process. In this case, we have to observe the resonance frequencies of a boring bar for continuous cutting. In the established research, boring bar vibration of cutting system has been measured with the aid of accelerometer. However, the inherent parameters of internal turning operations are severely limit for the real time monitoring on accelerometers. At this point, this paper is proposed other method for real time monitoring during continuous cutting with optical fiber at the inside of boring bar. This method has been used a plastic fiber in the special jig on boring bar by based on experimental modal analysis. In this study, improvement of monitoring system on continuous internal cutting was attempted using optical fiber sensor of inside type because usually chattering is investigated experimentally measuring the variation in chip thickness. It is demonstrated that the optical fiber sensor is possibility to measure of chattering with real time in boring process.

Keywords

References

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