Harmony Ball Bearing with Coordinated Rollers for Lower Friction
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Solution Overview
Problem
Conventional ball bearings face inefficiencies due to friction, noise, and limited load-bearing capacity, which can lead to malfunction and reduced machine lifespan.
Innovation Solution
The harmony ball bearing design features balls that move freely, with alternating positions of rollers that rotate in harmony with the balls but not with the inner or outer rings, reducing friction and enhancing load distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional ball bearings use balls placed directly in contact with inner and outer rings, then the structure is simple, but friction is high and load-bearing capacity is limited
Solution Approach 1:
The bearing is segmented into distinct functional zones: balls for load bearing, rollers for movement coordination, and cage stands for structural support. This segmentation allows each component to optimize its function, resolving the contradiction between structural simplicity and load-bearing capacity.
Solution Approach 2:
Rollers act as intermediaries between the balls and the cage structure. They mediate the movement between balls and cage, reducing direct friction while maintaining structural integrity, thus improving load-bearing capacity without excessive complexity.
2Stability of the object's composition
If balls are contained in cage sockets that do not rotate with the balls, then the cage structure is stable, but friction increases and efficiency decreases
Solution Approach 1:
The cage stands are designed to rotate dynamically with the balls rather than remaining stationary. This dynamic adaptation reduces friction between the cage and balls, decreasing energy loss while maintaining cage stability through the rotational movement.
3Force
If balls are placed close together to increase load capacity, then load-bearing capacity improves, but balls collide and friction increases
Solution Approach 1:
Rollers are positioned between adjacent balls as intermediaries, preventing direct collision between balls while maintaining close spacing for load bearing. The rollers reduce friction by providing a rolling contact surface, thus resolving the contradiction between load capacity and friction reduction.
4Ease of manufacture
If conventional bearings use fixed cage sockets, then manufacturing is simple, but the bearing cannot withstand high loads efficiently
Solution Approach 1:
The cage is segmented into stands that can rotate independently, maintaining manufacturing simplicity while improving efficiency under load. Each stand is a simple component that can be manufactured easily, but the collective rotational movement enhances load-bearing efficiency.
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
This design achieves reduced friction, lower noise, improved load-bearing capacity, and extended machine lifespan by allowing the balls and rollers to move in harmony, minimizing contact with the rings and maximizing smooth operation.
Implementation Method 1
The rollers that are not in contact with the rotating inner ring nor with the stationary supporting ring. They take movement from the balls and their rotational movement agree with the movement of balls.
Data Source
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AI summary
This ball bearing comprising a cage (4) which is made of two identical, flat, parallel rings. A metal strip starts from the ring goes down towards the center then turns 90 degrees going towards the other ring then it turns 90 degrees and meets the other ring. These metal strips, stands (5) which sit on the inner ring (7) are positioned with space between them. Above these stands there are holes where axles (3) are inserted. Round these axles there are rotating rollers (2). These rollers are smaller in radius so that they do not touch the inner ring or outer ring (6). In between these rollers there are bigger balls moving circularly that touch and hold the rotating inner ring and stationary outer ring. The balls and rollers move in harmony.