Rotation Transmission Disc Crosspiece Layout for Lightweight Strength
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Solution Overview
Problem
Rotation transmission discs, such as brake discs and sprockets, face challenges in achieving lightweight designs while maintaining strength across various utilization conditions due to differing product specifications and layouts.
Innovation Solution
A rotation transmission disc design featuring an outer circumferential portion with a center opening and multiple attachment holes, incorporating first and second crosspiece portions that intersect within specific angular ratios, dispersing stress and allowing for weight reduction while maintaining structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the rotation transmission disc is designed with a lightweight structure, then weight is reduced, but strength may be compromised
Solution Approach 1:
The disc is divided into multiple crosspiece portions (first and second crosspiece portions) that extend radially from the outer circumferential portion toward the center opening. These segmented structures distribute loads more effectively while removing unnecessary material, achieving weight reduction without compromising strength. The crosspieces are strategically positioned to maintain structural integrity under various loading conditions.
Solution Approach 2:
The disc employs non-uniform thickness distribution and strategically placed crosspiece portions with varying dimensions. The crosspiece portions have different lengths and thicknesses depending on their position, with thicker sections where stress concentrations are expected and thinner sections where weight reduction is prioritized. This localized variation in structural properties optimizes the strength-to-weight ratio.
2Ease of manufacture
If the product specifications are standardized across different models, then manufacturing complexity is reduced, but adaptability to various utilization conditions decreases
Solution Approach 1:
The disc design incorporates a standardized set of crosspiece portions that can serve multiple functions across different applications. The first and second crosspiece portions are designed with generic geometries and positioning schemes that can accommodate various wheel specifications and loading conditions. This universal design approach allows the same basic structure to be adapted to different utilization conditions through parameter adjustments rather than complete redesign.
Solution Approach 2:
The invention utilizes parameter variations (such as crosspiece length, thickness, angular positioning, and number of crosspieces) to adapt the standardized disc structure to different utilization conditions. By changing these parameters within a standardized design framework, the disc can be optimized for specific applications without requiring entirely different manufacturing processes or base structures.
Data Source
AI summary
A rotation transmission disc includes: an outer circumferential portion on which a load acts when rotation is transmitted; a center opening portion formed inside the outer circumferential portion; and a plurality of attachment holes for attachment of the rotation transmission disc 1 to a rotating element. A first crosspiece portions are formed in each of ranges of divided angles formed by two adjacent attachment holes with respect to a center of the rotation transmission disc. The first crosspiece portion extends from a load point, which is an intersection between a straight line extending in a radial direction to internally divide the divided angles at a predetermined angular ratio and a load radius position of the outer circumferential portion, to one of the attachment holes forming the divided angles. The second crosspiece portion extends from the load point to the other attachment hole of the attachment holes forming the divided angles.