ACTIVE CHATTER SUPPRESSION BY ONLINE VARIATION OF THE RAKE AND CLEARANCE ANGLES IN TURNING - PRINCIPLES AND EXPERIMENTAL INVESTIGATIONS

In this paper both the principles and experimental results of active c hatter suppression by on-line variation of the rake and clearance angl es are presented. A non-linear theoretical model was established to di scuss the effects of the changes of the rake and clearance angles on d ynamic stability. Based on the theoretical analysis, a strategy for ch atter suppression was developed and an experimental device constructed and tested on a lathe. The results indicated that suppression of chat ter by on-line variations of the rake and clearance angles was feasibl e and that a good correlation between the theoretical analysis and exp erimental results existed.