H. Pan et al., TOOL CONDITION MONITORING BY ACOUSTIC ANALYSIS THROUGH A SOLID PATH, International Journal of Production Research, 33(9), 1995, pp. 2455-2469
Citations number
NO
Categorie Soggetti
Engineering,"Operatione Research & Management Science
A sensing method using an acoustic signal obtained in a relative low f
requency range through a solid path for the monitoring of tool wear ha
s been investigated. Such acoustic signals could be in the form of str
ess waves that are released during a machining process, which can be p
icked up by a regular ferroelectric microphone. Data analysis was cond
ucted in both time and frequency domains. A clear pattern in such sign
als corresponding to the tool wear conditions has been identified. Sev
eral components in spectra were found in the pattern for indicating su
dden changes of tool wear or breakage occurring at major cutting edges
. It was also observed that the RMS and variance values of the signals
could indicate the specific wear condition of the tool. Therefore, th
is kind of acoustic signal carries sensitive information about the pro
gress of tool wear and can be implemented on line for monitoring tool
wear.