A Study on Chatter Vibration Suppression by Bringing a Damping Beam into Contact with Workpiece

- Chatter Vibration Suppression in Cutting Workpiece with Low Stiffness -

Abstract

Cutting thin cylindrical workpiece with low stiffness causes chatter vibration. The vibration increases machined surface roughness and cutting tool wear. This study aims to stabilize chatter vibration arising in turning workpiece with low stiffness. For the purpose of stabilizing vibration, the simple attenuation mechanism of bringing a damping beam into contact with workpiece is proposed. By this method, following results are obtained. Workpiece dampening could be improved using a damping beam with spring constant that maximizes strain energy of beam and modal damping ratio of vibration mode. Damping device could cut workpiece without chatter vibration compared with the case of not using it.