振动
信号(编程语言)
刀具磨损
频域
时域
声学
能量(信号处理)
信号处理
数据采集
频带
机床
刀具
工程类
计算机科学
电子工程
数学
机械加工
数字信号处理
统计
机械工程
物理
电气工程
计算机视觉
天线(收音机)
程序设计语言
操作系统
作者
Liqiang Wang,Xiao Li,Bo Shi,Munyaradzi Munochiveyi
标识
DOI:10.1177/16878140221075197
摘要
This paper designs an experimental scheme to monitor the tool wear state by extracting the vibration signal of tool wear. The data acquisition and signal processing hardware includes a T-type cutting tool, a vibration sensor, an amplifier, a data acquisition card, and a computer. In the time domain, the vibration signal is analyzed by statistical analysis method, and it is concluded that the variance of vibration signal of X-axis wear is positively correlated with the degree of tool wear. Moreover, the vibration signal is converted from time domain to frequency domain by Fourier transform, and the characteristic frequency bands of vibration signal are 2–4 kHz and 7–9 kHz in frequency domain. In addition, in time-frequency domain, the vibration signal is decomposed by wavelet packet decomposition technology, and the energy statistics of the decomposed frequency band is carried out. It is further judged that the energy percentage of 2.5–3.75 kHz and 7.5–8.25 kHz is closely related to tool wear, so the energy percentage of the two characteristic frequency bands is selected as the characteristic value of tool wear monitoring.
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