Polygonal Nut Recess Structure for Lower Weight and Strength
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Solution Overview
Problem
Conventional polygonal nuts are heavy and lack optimal mechanical properties, necessitating a reduction in weight while maintaining or improving mechanical performance.
Innovation Solution
The nut body features recesses extending from key face planes into the bore, with a thread-bearing casing providing stability and a pressure side for optimized force absorption, and the internal thread can be deformed to achieve clamping torque without additional elements, using materials like steel with a bainitic or ferritic-perlitic structure for enhanced mechanical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If conventional polygonal nuts are used with complete material structure, then mechanical strength and stability are maintained, but weight is excessive
Solution Approach 1:
The nut body is segmented by introducing recesses that divide the material structure into distinct regions. These recesses remove unnecessary material while preserving the load-bearing pathways, achieving weight reduction without compromising mechanical strength. The recesses create a segmented structure that maintains structural integrity through strategic material retention.
Solution Approach 2:
Different regions of the nut body are given different material densities through the recesses. Areas requiring high strength (near the thread-bearing casing) maintain full material density, while non-critical areas (near key face planes) have reduced density through recesses. This local differentiation optimizes the weight-strength ratio by placing material only where mechanically necessary.
2Weight of moving object
If recesses are introduced to reduce weight, then weight decreases, but structural stability may be compromised
Solution Approach 1:
The recesses are strategically positioned and dimensioned in advance during design to ensure they do not compromise structural stability. The depth and location of recesses are pre-calculated to maintain adequate material thickness for load distribution while achieving weight reduction goals. This preliminary planning ensures stability is preserved before manufacturing begins.
Solution Approach 2:
The recess structure is designed to replicate successful weight-reduction patterns from other engineered components. By copying proven structural configurations from aerospace or automotive applications, the nut achieves weight reduction while maintaining stability through established design principles that have been validated in other high-performance applications.
3Weight of moving object
If material is removed through recesses, then weight is reduced, but manufacturing complexity increases
Solution Approach 1:
The manufacturing process parameters are optimized to accommodate the recesses efficiently. By adjusting parameters such as recess depth, width, and positioning, the design achieves weight reduction while remaining compatible with standard manufacturing capabilities. The parameters are tuned to allow single-step machining or forming operations rather than requiring multiple complex steps.
Data Source
AI summary
In order to optimize a nut and a method for the production of a nut, comprising a nut body which is provided or can be provided with an internal thread and has a polygonal section with a polygonal outer contour which has, on the one hand, edge areas and, on the other hand, key faces which are located between the edge areas and extend in key face planes extending in a manner conforming to standards, in such a manner that it has mechanical properties which are as ideal as possible with as low a weight as possible, it is suggested that the nut body have a plurality of recesses which extend into the nut body in the direction of the bore proceeding from the respective key face planes.