Patent ID: 8752811

Claim:
A tuned mass damper for a machine tool head mounted on the end of an arm having a rotary tool that moves in the X, Y, and Z directions and rotates around a C-axis that is coincident with the long axis of the arm, the damper comprising: a pair of damper masses symmetrically arranged around the head, each damper mass having a center of gravity which is approximately in the geometric center of the damper mass, wherein the pair of damper masses are positioned on the head symmetrically around the center of the C-axis of rotation of the head; a resilient mounting for each of the damper masses, whereby the damper masses damp out vibration in the X and Y directions regardless of the orientation of the head; and, a pair of support blocks for suspending each of the pair of damper masses, the pair of support blocks being spaced along the Z axis of the head.