Abstract
A major issue by implementing ball screw drives in machine tools is the occurrence of transient thermal fluctuations in normal operation leading to unsteady thermal distortions, especially at highly variable feed rates. One way to overcome this issue and thereby improve the thermoelastic machine performance is through thermal management solutions. The objective of this work is the reduction of temperature fluctuations by increasing the thermal inertia of ball screws. For this aim, a latent heat storage unit was designed based on phase change materials. In addition, a thermal resistance network was developed for evaluation of the ball screw behaviour. Functional validation of the developed system was carried out on a ball screw test rig.
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