Roller Bearing Biasing Structure for Guide Flange Alignment
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Solution Overview
Problem
Roller bearings in wheel bearing units face misalignment issues due to manufacturing tolerances, leading to potential jamming and damage, as rollers may lose contact with the guide flange, necessitating precise manufacturing to maintain correct positioning.
Innovation Solution
Incorporating a biasing element, such as elastic spring elements or an intermediate ring, to exert a force on the rollers or cage, ensuring they remain in contact with the guide flange, thereby compensating for manufacturing tolerances and preventing misalignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the clearance in the cage is reduced to ensure correct roller positioning, then the reliability of roller guidance is improved, but the manufacturing precision requirements increase and costs rise
Solution Approach 1:
The patent introduces a biasing element that applies a force to press the rollers against the guide flange, dynamically adjusting the effective clearance rather than relying on fixed manufacturing tolerances. This force application changes the operational parameters of the bearing, ensuring reliable roller guidance while allowing for normal manufacturing variations in the cage and rollers.
2Manufacturing precision
If the cage pocket size is adapted to match the actual roller shape, then the positioning accuracy of rollers is improved, but the adaptability to manufacturing tolerances decreases
Solution Approach 1:
The biasing element automatically compensates for manufacturing tolerances by applying a continuous pressing force that ensures the rollers maintain contact with the guide flange. The system self-adjusts to variations in roller size and cage pocket dimensions without requiring precise pre-matching of components, as the force application dynamically adapts to the actual dimensions present.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The biasing element ensures rollers run flat against the guide flange, maintaining alignment and preventing damage by uniformly distributing pressure, allowing for cost-effective manufacturing without compromising the bearing's performance.
Implementation Method 1
the biasing element is formed as an elastic spring element that is disposed on one of the side rings and extends into at least one of the pockets of the cage
Data Source
AI summary
A roller bearing includes an inner ring and an outer ring and a cage between the inner ring and the outer ring in which a plurality of rollers are retained. The inner ring or the outer ring includes a guide flange for guiding the rollers, and a biasing member exerts a biasing force, directed toward the guide flange, on the rollers and/or on the cage.