Chatter occurring at more than 10,000 Hz frequency was found in fine boring operation, and causing reduced tool life. To identify the mechanism for the onset of high frequency chatter, cutting tests and structured dynamics examination of the boring tool have been performed. Experimental study has revealed that the regenerative effect, the penetration effect, and the X-Y looping of the tool tip are three relevant characteristics in the onset of the chatter. Those findings are included in a new chatter model of which validity is evaluated by computational analysis of energy supplied and dissipated in the vibrating system.
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