Wheel Hub Centring Device Weight Reduction
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Solution Overview
Problem
Existing wheel hub units face production and structural challenges due to complex machining requirements and potential critical zones formed by recesses in the centring device, which complicates weight reduction efforts.
Innovation Solution
A wheel hub with a centring device featuring a continuous tubular body, conical receiving portion, concave transition portion, and intermediate cylindrical portion, along with flattened areas that reduce radial thickness and facilitate water drainage, while maintaining low weight and structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the centring device is formed by connecting parts separated by recesses to reduce weight, then the weight of the wheel hub is reduced, but the machining complexity increases and critical zones are formed in the flange
Solution Approach 1:
The centring device is segmented into multiple connecting parts separated by recesses, which reduces the overall weight of the wheel hub while maintaining the structural function of centering the wheel rim or brake disc
Solution Approach 2:
The recesses are strategically positioned in non-critical areas of the flange, allowing weight reduction in specific locations without compromising the overall structural integrity or creating critical stress zones
2Weight of moving object
If the centring device is formed by connecting parts separated by recesses, then the weight of the wheel hub is reduced, but the structural integrity deteriorates due to critical zones in the flange
Solution Approach 1:
The centring device uses segmented connecting parts that are strategically positioned to achieve weight reduction while avoiding the creation of critical stress concentration zones in the flange structure
Solution Approach 2:
The recesses are placed in locations that do not create critical structural zones, maintaining adequate strength and structural integrity in the flange while still achieving weight reduction goals
Data Source
AI summary
A wheel hub having an axis of symmetry and including a flange transverse to the axis of symmetry and provided with a plurality of fixing holes for attaching a wheel, a tubular body extending axially from the flange for supporting a rolling bearing, and a centering device arranged on a side of the flange opposite to that of the tubular body and in a position concentric with the axis of symmetry of the wheel hub, for retaining a wheel rim or a brake disc. The centering device being provided with a given number of flattened areas extending circumferentially and axially on a respective continuous tubular body projecting axially from the flange.