ANTI-VIBRATION DEVICE FOR ROD MATERIAL

摘要

Disclosed is an anti-vibration device for rod material for suppressing vibration of a rotating main axis. A vibration detection means is provided for detecting vibration of rod material (11) gripped by a main axis (1) rotating at a pre-defined processing rotation speed, and a vibration suppression means for suppressing vibration of the rod material is constituted by a rotation speed control means (17) for controlling the rotation speed of the main axis (1). An operation control means (18) for controlling operation of the vibration suppression means is constituted so that by detection of vibration of the rod material by the vibration detection means, the rotation speed of the main axis (1) is decreased, and by convergence of the vibration of the rod material by the decrease in the rotation speed of the main axis (1), the rotation speed control means (17) is caused to operate so as to increase the rotation speed of the main axis (1) up to the processing rotation speed. The operation control means (18) causes the vibration suppression means to operate on the basis of the detection of the vibration of the rod material by the vibration detection means.