旋削加工における自励振動の検出とその抑制に関する研究 : 第2報

抄録

The generation mechanism and behavior of chatter vibration have been investigated in detail for a long time. However, very few reports have been published about the positive detection of chatter vibration. On the other hand, establishment of an objective method which can detect the commencing chatter vibration in a process and its practical method of suppression are the most important and urgent problems for automatic manufacturing systems. In this paper, a simple and practical approach is proposed to detect the occurrence of chatter vibration in a process, and its applicability is investigated. A simple and practical hardware system is constructed for development of suppression. The occurrence of chatter vibration is detected using a signal which is produced from the tool acceleration. That is to say, when the signal is over a proper stability threshold, the system judges the occurrence of chatter. Then the system attempts to suppress the chatter. Furthermore, applicability of this system to the manufacturing field was investigated. The systems was appraised and satisfactory results were obtained in this study.