Design and control of electromagnetic actuators for active machining vibration suppression
摘要
This article introduces various electromagnetic actuators for active machining vibration suppression as well as their dedicated control strategies. Furthermore, experimental validations from the actual machine tool testbed are presented to demonstrate the applicability of the proposed actuators in the real-world industrial settings. We introduce an active machining vibration suppression system using an electromagnetic active damper. The proposed active damper improves the dynamic stiffness of the critical structural mode of a vertical ram-type milling machine by up to 160%, thereby increasing the chatter-free cutting depth. We also present an electromagnetic active workpiece holder (AWH) for machining vibration compensation. By reducing the relative vibration between the tool and the workpiece, the proposed AWH decreases surface roughness by up to 52% in finish-milling tests. Finally, an electromagnetic active spindle bearing (ASB) is introduced to enhance the dynamic stiffness of the tool holder vibration mode. The proposed ASB improves spindle dynamic stiffness by up to 144%, and its effectiveness in vibration reduction during gear skiving operations is verified through simulation.
Graphical abstract