Randomized trial analyzes meshing characteristics in roller screw mechanisms, suggesting error influences on performance.
Key Points
This research aims to develop a multi-roller meshing model to understand how manufacturing and assembly errors affect the meshing characteristics of planetary roller screw mechanisms.
Established a multi-roller contact analysis coordinate system considering assembly errors.
Parameterized manufacturing errors as correction terms in thread surface equations to construct a mathematical model.
Solved nonlinear equations under geometric constraints to obtain meshing point radius and axial clearance variations.
Negative pitch diameter error has a significant negative coupling effect with other errors.
Positive coupling characteristics are observed among the remaining manufacturing errors.
Optimized thread tooth thickness increases minimum axial clearance from −1.5 to 2.3 μm, improving assembly feasibility.