Vibration-damped drill rods

These are used wherever tight workpiece tolerances are stipulated, and/or where the ratio of diameter to length exceeds 1:3.

The problem
Vibrations are undesirable side effectives of the precision machining of materials. Their origin depends on a variety of causal factors that defy clear identification and that are influenced by the entire 'Machine-Tool-Machining Conditions-Workpiece' system. 'Rattling' has an adverse impact on the roughness of the surface being machined. A key role in this is played by dimensional integrity and, not least, by the tool service life, in particular when using very hard high-performance cutting materials.

The insight
To do justice to the growing economic requirements associated with mechanical machining, the industry is calling for ever more tool holder materials with enhanced vibration-damping characteristics. Starting with specified workpiece conditions and machining data, as well as existing mechanical equipment, it is possible to establish that vibrations can only be affected favorably by materials with enhanced levels of rigidity and better damping characteristics than steel.

Our solution
The use of vibration-damping materials offers the following advantages:

•    Longer tool service lives
•    Improved dimensional integrity of the machined workpiece
•    Tighter machining tolerances
•    Reduced surface roughness
•    Elimination of the widespread problem of 'rattling' (tool chatter)

product sheet Vibration-damped drill rods [PDF]