HEALTH DIAGNOSIS METHOD FOR NUMERICALLY CONTROLLED MACHINE TOOL

WIPO Patent Application WO/2021/121182

A1

Disclosed is a health diagnosis method for a numerically controlled machine tool, the method comprising the steps: step one, a cloud server performing FFT processing on vibration data collected by a vibration sensor node to obtain a spectral average value of each frequency band, and obtaining a regression coefficient of the relationship between the spectral average value of a related frequency band and a temperature and the working state of equipment; and step two, solving the health degree of a numerically controlled machine tool, determining a predictive maintenance alarm threshold value, and when a failure probability index is greater than a predictive maintenance early-warning threshold value, performing an early-warning operation to indicate that the numerically controlled machine tool requires maintenance. With regard to the online predictive maintenance of a numerically controlled machine tool, the health diagnosis method for a numerically controlled machine tool provides rapid and accurate predictive maintenance information. Further provided is a system used by the health diagnosis method for a numerically controlled machine tool.

WANG YUNLIANG (CN)
LOU JING (CN)
ZHUANG YUEHUI (CN)
WANG ZHICHENG (CN)

PCT/CN2020/136109

June 24, 2021

December 14, 2020

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CHANGZHOU ELECTROMECHANICAL VOCATIONAL AND TECHNICAL COLLEGE (CN)
JIANGSU DABEI SMART TECH CO LTD (CN)

G05B19/4065; B23Q17/00

CN110977614A	2020-04-10
CN110570052A	2019-12-13
CN110471366A	2019-11-19
US20070093976A1	2007-04-26
TW200516468A	2005-05-16
CN102520697A	2012-06-27

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