Abstract
Planetary roller screw actuator is used in machine tools for generating linear motion. A planetary screw actuator is preferred over ball screw actuator due to finer lead, higher efficiency and load carrying capacity. The paper focuses on design and analysis of planetary roller screw actuator used in high precision machine tools. Analytical calculations are carried out to arrive at the dimensions of planetary roller screw components based on the design requirements. Kinematic and dynamic analysis is carried out in multibody dynamic software for the developed model and finite element analysis is carried out in ABAQUS software for evaluating stress distribution. Further, it was observed that trapezoid thread was preferred for planetary roller screw.
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