광섬유 센서의 보링 바 삽입에 의한 진동측정

다국어 초록 (Multilingual 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.

참고문헌 (Reference)

1 천세호, "선반용 보링바의 동적응답특성 변동에 관한 연구" 한국정밀공학회 27 (27): 62-69, 2010

2 송두상, "보링바 고유진동 계측을 위한 광섬유 진동센서 연구" 한국정밀공학회 26 (26): 107-113, 2009

3 Cardi, A. A., "Work-piece dynamic analysis and predictionduring chatter of turning process" 22 (22): 1481-1494, 2008

4 Moradi, H., "Tunable vibration absorber design to suppresschatter in boring manufacturing process" 1943-1950, 2007

5 Ema, S, "Suppression of chattervibration of boring tools using impact dampers" 40 (40): 1141-1156, 2000

6 Kondo, E., "Regenerative Chatter Vibrations of Work-piece inHigh Speed Cutting Process on Lathe" 9 (9): 454-459, 1997

7 Handbook from Sandvik Coromant, "MetalcuttingTechnical guide"

8 Andren, L., "Identification of motion of cutting tool vibrationin a continuous boring operation-correlation tostructural properties" 18 (18): 903-927, 2004

9 Kim, J. S., "DynamicBehavior of Boring Bar with Continuous SystemAnalysis" 11 (11): 38-46, 1994

10 Shin, W. C, "Design of multimode optical fiberdisplacement sensor by transmitting light irradiancedistribution modeling" Chung-Nam National University 2006

11 Lee,H.T, "An Experimental Study on the ChatterDetection and Analysis using Accelerometer inTurning" Chung-Buk National University 2002

12 Mei,C, "Active regenerative chatter suppressionduring boring manufacturing process" 21 (21): 153-158, 2005

13 Jung, S. K., "AStudy of the Boring Bar Internal VibrationMeasurement using Optical Fiber Sensor" 527-528, 2009

14 Youn,J.W, "A Study on the Detection of ChatterVibration using Cutting Force Measurement" 9 (9): 150-159, 2000

15 Kang,D.H, "A Study of the Non-Contact BillCounter using Optical Fiber Sensor" Chung-NamNational University 2006

16 Roa, B, "A Comprehensive DynamicCutting Force Model of Chatter Prediction in TurningInternational" 39 (39): 1631-1654, 1999