Split Retainer Assembly for High-Speed Deep Groove Ball Bearings
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Deep groove ball bearings for new energy vehicle drive motors face issues with retainer melting and cracking due to high temperature, impact fractures, and complex assembly processes, which affect performance and production efficiency.
Innovation Solution
A deep groove ball bearing design featuring a retainer formed by two separated retainer bodies with grooves, sub-connectors, connecting blocks, and elastic grippers, allowing for easy assembly and high stability, with features like sloping contact surfaces and abutting steps to enhance the retainer's structural integrity and ease of production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a retainer is used in deep groove ball bearings for high-speed operation, then the bearing can achieve high rotation speed, but the retainer is likely to melt and crack due to large temperature rise during rapid acceleration or deceleration
Solution Approach 1:
The retainer is divided into two separate retainer bodies (first retainer body and second retainer body) that can be assembled together. This segmentation allows for easier replacement when damage occurs and improves manufacturing efficiency, directly addressing the reliability issue while maintaining high-speed capability
2Stability of the object's composition
If a retainer with ball sockets is used, then the bearing can maintain structural integrity, but it is prone to impact fractures at positions corresponding to the ball sockets
Solution Approach 1:
The retainer structure is segmented into two bodies connected by connecting arms, which distributes stress and reduces concentration at ball socket positions, thereby improving impact resistance while maintaining structural integrity
3Reliability
If a traditional retainer design is used, then the bearing can function properly, but the retainer is inconvenient to assemble and produce, reducing production and machining efficiency
Solution Approach 1:
The retainer is segmented into two bodies that can be produced separately and assembled together, simplifying the manufacturing process and improving production efficiency while maintaining proper bearing function
Solution Approach 2:
The retainer bodies are designed with pre-formed grooves and connecting structures that facilitate easier assembly, reducing assembly time and complexity while ensuring proper bearing operation
Data Source
AI summary
A deep groove ball bearing includes an outer ring, an inner ring, a retainer and steel balls, where the retainer is disposed between the outer ring and the inner ring, sockets are disposed on the retainer, the steel balls are disposed in the sockets, the retainer is formed by two retainer bodies which are separated from each other, grooves are formed in the retainer bodies at intervals, the grooves in one retainer body are combined with the grooves in the other retainer body to form the sockets, each retainer body is provided with a plurality of sub-connectors which are separated from each other, a first connecting block and a second connecting block are formed at two ends of each sub-connector respectively, two grooves are formed in each sub-connector, and a positioning table is disposed between the two grooves in each sub-connector.