다중 센서를 이용한 CNC 선반에서의 실시간 공구파손 감시에 관한 연구
A Study on Real-time Tool Breakage Monitoring on CNC Lathe using Fusion Sensor
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참고문헌
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초록
This study presents a new methodology for realtime tool breakage detection by sensor fusion concept of two hall sensor and an acoustic emission (AE) sensor. Spindle induction motor torque of CNC Lathe during machining is estimated by two hall sensor. Estimated motor torque instead of a tool dynamometer was used to measure the cutting torque and t ol breakage detection. A burst of AE signal was used as a triggering signal to inspect the cutting torque. A significant drop of cutting torque was utilized to detect tool breakage. The algorithm was implemented on a NI DAQ (Data Acquisition) board for in-process tool breakage detection. The result of experiment showed an excellent monitoring capability of the proposed tool breakage detection system. This system is available tool breakage monitoring through internet also provides this system's user with current cutting torque of induction motor.
Abstract
This study presents a new methodology for realtime tool breakage detection by sensor fusion concept of two hall sensor and an acoustic emission (AE) sensor. Spindle induction motor torque of CNC Lathe during machining is estimated by two hall sensor. Estimated motor torque instead of a tool dynamometer was used to measure the cutting torque and t ol breakage detection. A burst of AE signal was used as a triggering signal to inspect the cutting torque. A significant drop of cutting torque was utilized to detect tool breakage. The algorithm was implemented on a NI DAQ (Data Acquisition) board for in-process tool breakage detection. The result of experiment showed an excellent monitoring capability of the proposed tool breakage detection system. This system is available tool breakage monitoring through internet also provides this system's user with current cutting torque of induction motor.
참고문헌 (12)
- Hong. I. J., "Speed Sensorless Torque Monitoring of Induction Spindle Motor on CNC Lathe using Internet", 석사, pp.2003
- Choi. D., "Real-time Monitoring of Tool Fracture in Turning using Sensor Fusion", The International Journal of Advanced Manufacturing Technology, 15, pp.305~310 (1999)
- 홍익준, "인터넷을 이용한 CNC 선반의 속도 센서리스 토크감시", 한국정밀공학회지, 21(5), pp.99~105 (2004), 한국정밀공학회
- 권원태, "CNC 선반가공 중 속도 센서리스 토크 감시", 대한기계학회논문집 A, 28(3), pp.222~229 (2004), 대한기계학회
- Mannan, M. A., "Monitoring and Adaptive Control of Cutting Process by Means of Motor Power and Current Measurement", Annals of CIRP, 38, pp.347~350 (1989)
- Oh. Y. T., "Cutting Torque Control in Driling", Journal of the Korean Society of Precision Engineering, 18(8), pp.96~106 (2001)
- Stein, J. L., "Evaluation of DC Servo Machine Tool Feed Drives as Force Sensors", ASME J. of Dynamic Systems Measurement and Control, 108, pp.279~288 (1986)
- Stein, J.L., "Analysis for Power Monitoring on AC Induction Drive Systems", Transaction of ASME Journal of Dynamic Systems, Measurement and Control, 112, pp.239~248 (1990)
- Nicholas P. Rubin, "Evaluation of Sarious Slip Estimation Techniques for an Induction Machine Operating under Field-oriented Control Conditions", IEEE Trans. Ind. Appl., 28(6), pp.1367~1375 (1992)
- Toshiyuki Kanmachi, "Sensorless Speed Control of an Induction Motor with no Influence of Secondary Resistance Variation", IEEE IAS Annual Meeting conference record, pp.408~413 (1993)
- Peter Vas, "Sensorless vector and direct torque control" (1998), Oxford University Press
- D. Hoadley, "Steady- state phase-coordinate model of induction machines", Electric Power Systems Research, 57, pp.189~194 (2001)