A Novel Design Method of Irregular Pitch Cutters to Attain Simultaneous Suppression of Multi-Mode Regenerations
2012
Abstract It is known that regenerative effect, which causes self-excited chatter vibration, can be suppressed in many cases by utilizing irregular pitch tools. In order to suppress the regenerative effect sufficiently, a suitable combination of irregular pitch angles needs to be designed. Although the past researches proposed a basic idea to design irregular pitch angles for the regeneration suppression, they are only applicable to the suppression of single-mode regeneration. The present study proposes a novel design method of irregular pitch cutters, which ensures the simultaneous suppression of multi-mode regenerations. In order to quantify the regenerative effect, a new parameter called as the “Regeneration Factor” is proposed. The effect of pitch angles designed by the proposed method on chatter suppression is investigated analytically, and its validity is verified.
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