Active control of high frequency chatter with machine tool feed drives in turning

This paper presents a new active vibration control strategy to mitigate high frequency regenerative chatter vibrations using machine tool feed drives. Rather than modal damping, proposed approach aims to control regenerative process dynamics to shape the Stability Lobe diagram (SLD) and attain higher material removal rates. The controller is designed as a feedback filter whose parameters are optimized to compensate regeneration. The proposed strategy is applied to actively control orthogonal (plunge) turning dynamics where >2.5 [kHz] chatter vibrations are suppressed by a fast tool servo (FTS) drive system. Stability lobes are shaped locally to reach up to 4x higher material removal rates. (c) 2021 CIRP. Published by Elsevier Ltd. All rights reserved.

Automated summary

The paper introduces a new active vibration control strategy for shaping the Stability Lobe diagram to achieve higher material removal rates. The controller is designed as a feedback filter with optimized parameters to suppress regeneration dynamics. The proposed strategy has been successfully applied to systems with significant vibration suppression effects in turning dynamics.