期刊
CIRP ANNALS-MANUFACTURING TECHNOLOGY
卷 65, 期 1, 页码 385-388出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cirp.2016.04.101
关键词
Observer; Monitoring; End milling
This paper proposes a sensorless approach for realtime tool fracture detection in milling by means of servo information. Cutting force and torque can be estimated in a wide-frequency range by applying disturbance observer to the ballscrew-driven stages and the spindle controllers. By integrating the estimated information in each axis, a fracture-induced variation in cutting force and torque can be accurately captured with parallel sliding Fourier transform which is an analytical approach of low computation load in time-frequency domain. Validation of the proposed method is presented through milling tests of various milling conditions with several fractured endmills. (C) 2016 CIRP.
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