Segmented Bearing Cage Structure for Higher Load at Lower Cost
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Solution Overview
Problem
Existing rolling element bearing cage assemblies lack sufficient load-carrying ability and have high production costs, necessitating an improvement in design and materials to enhance performance and economic viability.
Innovation Solution
A novel rolling element bearing cage assembly design featuring resilient tangs and a cylindrical structure formed by connecting annular rings with retainer portions, along with a method of forming segments using different materials and 3D manufacturing techniques, to create a robust and cost-effective solution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional rigid cage structures are used, then structural strength is maintained, but load-carrying capacity is insufficient and production costs are high
Solution Approach 1:
The patent applies parameter changes by transitioning from rigid structures to resilient tangs with controlled flexibility. The tangs are designed with specific dimensional parameters (thickness, length, root geometry) that allow them to deform elastically under load, increasing load-carrying capacity while maintaining manufacturability through standard forming processes
Solution Approach 2:
The patent employs composite material principles by combining materials with different mechanical properties in the multi-layer cage construction. The resilient tangs are made from materials optimized for elastic deformation, while other cage components use materials for structural support, creating a composite structure that achieves high load capacity at reduced cost
2Strength
If resilient tangs are introduced to increase load-carrying capacity, then performance improves, but structural complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the cage into modular components: annular rings, retainer portions, and resilient tangs. This segmentation allows each component to be optimized independently for its specific function while simplifying the overall manufacturing process through standardized assembly of pre-formed elements
Solution Approach 2:
The patent implements dynamics by designing tangs that transition from static rigid structures to dynamic resilient elements. The tangs are engineered to deform elastically under varying loads, absorbing shock and distributing forces dynamically, which increases load capacity without requiring complex active control mechanisms
3Strength
If multi-component cage assembly is used with resilient tangs, then load-carrying ability increases, but manufacturing complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the cage into modular components: annular rings, retainer portions, and resilient tangs. This segmentation allows each component to be optimized independently for its specific function while simplifying the overall manufacturing process through standardized assembly of pre-formed elements
Solution Approach 2:
The patent applies nesting by positioning the reinforcing frame inside the supporting frame, with both frames sharing the same cylindrical geometry and opening patterns. This nested configuration allows compact assembly and simplifies manufacturing by using concentric forming processes for both frames
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 design increases load-carrying capacity while reducing production costs, offering a more efficient and economical solution for rolling element bearing cages through the use of resilient tangs and segmented construction.
Implementation Method 1
a plurality of resilient tangs on each of the first and second annular rings, each tang protruding from the circumference of the respective annular ring
Data Source
AI summary
The invention relates to a rolling element bearing cage formed of one or more segments, each segment comprising: a supporting frame having a plurality of spaced apart openings each for accommodating a rolling element; and a reinforcing frame, inserted within the supporting frame, having a corresponding plurality of openings each for aligning with the openings of the supporting frame.