Abstract
Ball screws are the most common elements in machine tools for transferring rotational into linear movements. Within an electromechanical machine tool axis, ball screws belong to the decisive components for achieving small positioning errors. Due to wear, the preload of ball screws decreases. This often leads to vibrations in the electromechanical power train and influences the machining results negatively. This results in the need of preload compensation systems, which ensure the required machine accuracy. In this article, an adaptronic approach with piezoelectric self-sensing transducers for an active compensation system of preload control in ball screws is presented and common results of the developed self-sensing actuator are discussed.
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