Heavy-Duty Axle Grooves for Precise Brake Component Welding
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Solution Overview
Problem
Existing heavy-duty vehicle axles face challenges with precise placement and accurate welding of braking system components, leading to potential misalignment, reduced durability, and increased manufacturing costs due to the need for customized axles and complex prefixturing processes.
Innovation Solution
The implementation of a thin-walled axle with integrated annular grooves at each end, providing self-location points for braking system components, allowing for accurate positioning and robust welding without the need for prefixturing, thereby simplifying tooling and reducing assembly time and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional thick-walled axles are used, then the axle has sufficient strength and durability, but the vehicle weight increases and cargo capacity is reduced
Solution Approach 1:
The patent changes the wall thickness parameter from traditional 0.500-0.750 inches to a thinner 0.301-0.400 inches, while compensating for strength through strategic placement of braking components at optimized positions along the axle tube, maintaining structural integrity while reducing weight
2Manufacturing precision
If braking system components are precisely positioned on thin-walled axles using traditional methods, then accurate welding can be achieved, but complex prefixturing processes and customized axles are required, increasing manufacturing cost and time
Solution Approach 1:
The axle tube serves itself by incorporating integrated positioning features directly into its structure, including annular grooves that automatically locate braking components during assembly without requiring external prefixturing fixtures or customized axle variations
Solution Approach 2:
The standardized axle design with integrated positioning features can accommodate multiple types of braking components (disc brakes, drum brakes) and serves as a universal mounting structure, eliminating the need for customized axles for different braking configurations
3Strength
If braking components are rigidly attached to thin-walled axles, then secure mounting is achieved, but weld accuracy and strength are reduced due to lack of precise positioning
Solution Approach 1:
The axle tube includes pre-formed annular grooves and positioning features that establish accurate component placement before welding begins, ensuring proper alignment and positioning is achieved in advance of the welding process
Solution Approach 2:
The patent replaces complex mechanical prefixturing systems with integrated annular grooves formed directly on the axle tube, simplifying the positioning mechanism while maintaining or improving weld accuracy through the groove geometry that guides component placement
4Manufacturing precision
If customized axles are produced for different braking components, then precise placement can be achieved, but manufacturing cost and assembly time increase
Solution Approach 1:
A single standardized axle tube design with integrated positioning features accommodates multiple braking component types (disc brakes, drum brakes, different manufacturers), eliminating the need for customized axles and enabling universal interchangeability while maintaining precise placement
Solution Approach 2:
The integrated positioning features (annular grooves, locating surfaces) are pre-formed during axle manufacturing, establishing accurate component locations in advance and enabling rapid assembly without time-consuming customization or complex fixtures
Data Source
AI summary
An axle for heavy-duty vehicles, the axle comprising first and second grooves formed about the axle. The first and second grooves include a cross-sectional geometry that forms integrated annular fixturing locations about the axle for selectively mounting a component of a braking system.