Application example: MillTurn, high-speed rotary table in machining production

In MillTurn processes, parts are changed asymmetrically by milling, i.e. they are no longer rotationally symmetrical. This leads to a strong centrifugal force load during a subsequent turning operation. Cutting parameters have to be changed and the speed has to be reduced in order to be able to maintain the product quality.

These process-related imbalances often have to be pre-balanced by adding counterweights. The size and position of these weights have to be calculated and attached manually, which leads to a significant extension of the manufacturing process time.

PROBLEM: Imbalance is caused by

• Asymmetrical change in mass during the process due to milling
• Asymmetrically structured parts
• Inhomogeneous component properties, e.g. Casting tolerances

SOLUTION: The fully integrated AB 9000 active balancing system from Hofmann

• Imbalances can be corrected automatically during the rotary table is rotating; no stopping required
• A significantly lower vibration level is achieved and the surface quality is improved
• The production process is optimized through the now possible increase in speed
• Automatic correction of unbalance, including clamping fixtures and any clamping errors