Chatter Prediction based on Frequency Domain Solution in CNC Pocket Milling

다국어 초록 (Multilingual Abstract)

Chatter has been a problem in CNC machining process especially during pocket milling process using an end mill
with low stiffness. Since an iterative time-domain chatter solution consumes a computing time along tool paths, a
fast chatter prediction algorithm for pocket milling process is required by machine shop-floor for detecting chatter
prior to real machining process. This paper proposes the systematic solution based on integration of a stability
law in frequency domain with geometric information of material removal for a given set of tool paths. The change
of immersion angle and spindle speed determines the variation of the stable cutting depth along cornering cut
path. This proposed solution transforms the milling stability theory toward the practical methodology for the
stability prediction over the NC pocket milling.

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