In-Field Spindle Bearing Reconditioning via Abrasive Grinding
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Solution Overview
Problem
Current methods for repairing damaged spindles on vehicles, such as those due to bearing failure, often require replacing the spindle or axle, which is impractical for field repairs like highway breakdowns or inspections, as they involve complex procedures that cannot be easily performed on-site.
Innovation Solution
A spindle reconditioning system comprising an axle with a spindle and a mount that slidably receives the spindle, featuring a grinding unit aligned with the bearing surface to abrade and recondition it, eliminating the need for replacement by allowing in-field repair of the damaged spindle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the spindle is replaced when damaged, then the reliability of the vehicle is improved, but the loss of time and complexity of repair increase significantly
Solution Approach 1:
The invention extracts only the essential repair function (grinding/boring the bearing surface) from the complete spindle replacement process. By removing the damaged bearing surface material and restoring it to original dimensions through abrasion, the system eliminates the need to replace the entire spindle assembly, thereby reducing repair time while maintaining reliability.
Solution Approach 2:
The mounting assembly acts as an intermediary device that enables field repair without requiring complete spindle replacement. It provides a portable grinding mechanism that can be mounted on the vehicle and operated in-field, serving as a mediator between the damaged spindle and the repair objective.
2Manufacturing precision
If the spindle is replaced when damaged, then the manufacturing precision of the bearing surface is restored, but the device complexity and ease of repair worsen
Solution Approach 1:
The repair system is segmented into separate functional components: a mounting assembly with grinding mechanism and a separate grinding wheel. This segmentation allows the complex precision grinding function to be delivered through a modular system that can be transported and assembled in the field, reducing the complexity burden on the repair process while maintaining manufacturing precision.
Solution Approach 2:
The mounting assembly is designed with universal applicability to accommodate different spindle configurations. The grinding mechanism can be adjusted and positioned to work on various bearing surfaces, making the system versatile enough to handle different vehicle types and spindle designs without requiring specialized equipment for each case.
3Reliability
If the spindle is replaced when damaged, then the reliability is improved, but the loss of substance and costs increase
Solution Approach 1:
Instead of discarding the entire spindle when damaged, the invention recovers the usable portions of the spindle by selectively removing only the damaged bearing surface material through abrasion. The majority of the spindle structure is preserved and reused, minimizing material waste and reducing the need for new spindle production.
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
Enables field repair of damaged spindles without replacing them or the axle, facilitating quick restoration and passing inspections by effectively reconditioning the bearing surface to match the original diameter, thus reducing downtime and costs.
Implementation Method 1
The grinding unit abrades the bearing surface for reconditioning the bearing surface when damage on the bearing surface has been repaired
Data Source
AI summary
A spindle reconditioning system includes an axle that is mounted on a vehicle. The axle has a spindle and the spindle has a distal end with respect to the axle and a bearing surface. A mount is provided and the mount slidably receives the spindle and engages the distal end of the spindle. Thus, the mount is oriented co-linear with a line extending through the distal end of the spindle and the axle. A grinding unit is movably coupled to the mount and the grinding unit is aligned with the bearing surface on the spindle when the mount is positioned on the spindle. The grinding unit abrades the bearing surface for reconditioning the bearing surface when damage on the bearing surface has been repaired thereby eliminating the need to replace the spindle when the spindle is damaged.