Split Sleeve Bearing Mounting Mechanism for Precise Axial Control
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Solution Overview
Problem
Existing bearing mounting and dismounting mechanisms face challenges in achieving precise axial movement for proper tightening without over-tightening, leading to reduced bearing clearance and potential damage during disassembly, especially when space or access is limited.
Innovation Solution
A concentric locking mechanism using a split sleeve with a receptive flange and positioning flange, where screws drive the sleeve into and out of engagement with the bearing, allowing for controlled torque application and easy installation and removal on the same side, minimizing raceway distortion and ensuring proper clearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a nut and washer locking mechanism with tapered sleeve is used, then the bearing can be secured to the shaft, but it is difficult to remove the bearing without damaging the shaft
Solution Approach 1:
The locking mechanism is divided into two separate functional components: a locking mechanism for securing the bearing to the shaft, and a separate retrieval mechanism for removing the bearing. The retrieval mechanism includes a retrieval feature that extends through the bearing and shaft, allowing the bearing to be pulled off the shaft without damaging either component.
Solution Approach 2:
A retrieval feature acts as an intermediary element that extends through both the bearing and the shaft. This intermediary component provides a means to apply removal force during bearing retrieval, enabling easy removal without damaging the shaft or bearing while maintaining secure operation during use.
2Ease of operation
If multiple tapered sleeves and nuts are used for mounting and dismounting, then the bearing can be installed and removed, but the device complexity increases
Solution Approach 1:
The locking mechanism and retrieval mechanism are merged into a single integrated bearing assembly. The retrieval feature is incorporated within the bearing structure itself, eliminating the need for separate mounting and dismounting tools or components. This integration maintains ease of operation while reducing overall device complexity.
Solution Approach 2:
The bearing assembly is designed with multi-functionality, where the same structure serves both as the load-bearing component and as the retrieval mechanism. The retrieval feature embedded in the bearing allows the bearing to function both as a mechanical support element and as a self-contained removal tool, eliminating the need for separate mounting and dismounting hardware.
3Ease of manufacture
If manual tightening methods are used, then installation is simple, but the axial movement precision and bearing clearance control are poor
Solution Approach 1:
The manual tightening process is replaced with a controlled mechanical expansion system. The bearing assembly includes an expansion mechanism that applies precise axial force to expand the bearing bore, ensuring consistent interference fit with the shaft. This mechanical system provides repeatable precision while maintaining ease of installation through automated or semi-automated processes.
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 solution ensures precise and repeatable bearing installation and removal, maintaining internal clearance and preventing damage to shafts, while allowing for efficient use of space and reducing variability in user installation methods.
Implementation Method 1
A screw is rotated in a first direction to drive the split sleeve into engagement with the bearing
Implementation Method 2
the split sleeve into engagement with the shaft as it collapses
Data Source
AI summary
A mechanism and method for locking a bearing to a shaft includes a split sleeve and a receptive flange adapted to be fixed to the bearing. A positioning flange is coupled to the split sleeve. A screw extends through the positioning flange and threadingly engages the receptive flange. Rotation of the screw in a first direction axially drives the sleeve into engagement with the bearing to collapse the split sleeve into engagement with the shaft.