Chatter Suppression during Milling of Ti-6Al-4V Based on Variable Pitch Tool and Process Damping Effect

Regenerative chatter is a major limitation in the milling of Ti-6Al-4V, resulting undesirable surface and reducing cutting efficiency. It well-acknowledged that variable pitch cutter process damping effect are effective methods to suppress chatter, these two compatible. In this paper, novel anti-vibration tool with combined (pitch angles 85°-95°-85°-95°) wear edges (60 μm on flank face), which helps increase effect, presented. The model considering developed dynamic stability analyzed by using semi-discretization method. To modify time delay, an analytical formula for optimal tuning effectiveness proposed verified diagrams experiments. Industrial experimental results show compared common regular onefold tool, when used, stable axial depth cut increases 97.4% 26.2%, respectively.