Segmented Roller Bearing Cage for Flange Mounting
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Solution Overview
Problem
Conventional rolling-element bearing cages face difficulties in installation, especially for large bearings, due to the need for expansion and contraction, which can be complex and require specialized tools, and snap-in designs can be challenging to manufacture and assemble.
Innovation Solution
A rolling-element bearing cage design featuring side rings with opening points that allow expansion for installation, enabling the cage to be drawn over larger flanges and facilitating correct positioning of rolling elements, with optional closure elements for secure mounting and easy removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional bearing cages are expanded for mounting over flanges, then the cage can be installed on inner rings with larger flange diameters, but special tools are required and the installation process becomes complex
Solution Approach 1:
The side ring is segmented by introducing an opening point that divides the continuous circumferential structure into two separable ends. This segmentation allows the cage to be opened for installation over flanges and then closed to form a complete circular structure, eliminating the need for special expansion tools while maintaining adaptability to mount over flanges with diameters larger than the closed cage diameter
Solution Approach 2:
The side ring transitions from a static closed circular structure to a dynamic structure that can change its circumferential configuration. By incorporating an opening point, the side ring can dynamically adjust its shape during installation - opening to expand the circumference for mounting, then closing to restore the original circular form, thereby simplifying the installation process
2Ease of operation
If snap-in design cages are used for large bearings, then installation over flanges is facilitated, but manufacturing and assembly become complex and difficult
Solution Approach 1:
Instead of creating a complex snap-in structure with multiple separate components, the invention segments the side ring by introducing a single opening point. This simplified segmentation allows the side ring to be manufactured as a mostly complete circular structure with a minimal interruption, reducing manufacturing complexity while still enabling easy installation over flanges by opening at the opening point
Solution Approach 2:
The opening point is designed with specific local characteristics - the circumferential extension is interrupted only at this localized position while the rest of the side ring maintains its full structural integrity and circular shape. This local modification enables installation functionality without requiring complex manufacturing throughout the entire structure
3Strength
If the side ring is made completely closed for structural integrity, then the cage maintains its shape and strength, but it cannot be easily installed over flanges with larger diameters
Solution Approach 1:
The side ring is segmented at a single opening point rather than being completely closed. This minimal segmentation preserves the structural integrity and circular shape of the side ring for the majority of its circumference while creating just enough discontinuity to allow the cage to be opened and installed over flanges with diameters larger than the closed cage diameter
Solution Approach 2:
The side ring is designed to dynamically transition between a closed circular configuration for structural integrity and an opened configuration for installation. The opening point enables this dynamic transformation, allowing the side ring to maintain its strength and shape during operation while facilitating easy installation when needed
Data Source
AI summary
A rolling-element bearing cage includes a first side ring and a second side ring connected to the first side ring by a plurality of bridges defining a plurality of pockets configured to receive a rolling-element. The first side ring includes a joint at which the first side ring is configured to be opened to increase a diameter of the first side ring, and the first side ring and the second side ring and the plurality of bridges are made of steel and an outer diameter of the second side ring is greater than 500 mm.