Improved calculation method of contact deformation of ball screw pair based on fractal theory
By constructing microscopic and macroscopic deformation models of ball screw pairs using fractal theory and contact mechanics theory, and combining effective ball number optimization, the problem of inaccurate deformation calculation in traditional models is solved, and high-precision prediction of the load-bearing capacity of ball screw pairs is achieved.
Patent Information
- Application Number
- CN202310738078.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-21
- Publication Date
- 2026-07-24
- Estimated Expiration
- 2043-06-21
AI Technical Summary
In studying the deformation mechanism of ball screw pairs, existing technologies often fail to accurately calculate deformation because the traditional contact model differs significantly from the actual load and deformation in real-world applications. This lack of research combining microscopic and macroscopic perspectives leads to inaccurate deformation calculations.
A micro-convex body contact model is constructed based on fractal theory, micro-contact mechanics, and cosine function. Combined with Hertz contact theory, Hornton elastoplastic contact theory, and the Mises criterion for yield characteristics, a macroscopic ball screw pair deformation model is constructed. The model is then optimized by considering the effective number of balls to establish an overall calculation model.
The accuracy of deformation calculation during the deformation process of the ball screw pair was improved, and the error was reduced to 4.08%, which significantly improved the prediction accuracy of the load-bearing capacity of the ball screw pair.