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Abstract:
A time series model for on line detection of tool faiture has been
developed for general milling operations. The deterministic Components
of milling forces are first separated by using fundamentals of milling
mechanics, with the remaining force signal being tracted by a first
order adaptive autoregressive time series filler or the second
difference filter. The filter allows sepertion of milling transients
(entry, exit, over holes, slot and other geometric transients on
workpiece) from a tool breakage event. The efficient response of the
algorithm allows the detection of tool failture within one revolution.
The results of laboratory experiments performed confirm the practical
applicability of the monitoring algorithm.
Key words:
Milling operations Breakage Detection Difference
Milling tool
Received
19901115, received in revised form 19920311
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