Vibration damper for hole machining apparatus

摘要

A vibration damper for a drill tube of a hole machining apparatus. The damper comprises a closed loop bi-directional adjustment mechanism (34, 36) which operates from a single side of the damper. The closed loop mechanism ensures that the position of a clamping sleeve (24) has a one-to-one relationship with the adjustment mechanism, which enables controlled adjustment of the clamping force to be performed. Locating the adjustment mechanism at one side of the clamping sleeve facilitates retooling, e.g. replacing the clamping sleeve if a larger diameter drill tube is to be used.