Gun Barrel Rifling Single Edge Polygonal Design
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Solution Overview
Problem
Existing gun barrel rifling techniques cause deformation of bullets, leading to an off-center center of gravity and inaccurate bullet travel, particularly for 22 caliber lead bullets.
Innovation Solution
The implementation of a rifling design featuring a single edge area and a polygonal area separating the grooves and bore, which minimizes deformation and ensures symmetrical bullet travel by using button rifling techniques to create a uniform twist and reduce stress on the bullet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional rifling techniques (cut rifling, button rifling, hammer forge rifling) are used, then the bullet is engaged and twisted to stabilize flight, but the bullet experiences deformation causing off-center center of gravity and inaccurate travel
Solution Approach 1:
The rifling cross-section is divided into distinct zones: a polygonal area (flat areas) and a standard gear-shaped area (curved areas). This segmentation allows different portions of the rifling to perform different functions - the flat areas minimize deformation while the curved areas provide engagement and twist, resolving the contradiction between maintaining bullet symmetry and achieving accurate flight stabilization.
2Reliability
If standard gear-shaped rifling is used, then the bullet is engaged effectively, but the bullet deformation causes center of gravity to move off center
Solution Approach 1:
Different regions of the rifling cross-section are given different geometric qualities - flat areas for minimal deformation and curved areas for effective engagement. This local differentiation allows the rifling to simultaneously achieve reliable bullet engagement while maintaining precise center of gravity positioning through the flat areas that prevent excessive deformation.
Data Source
AI summary
The present invention relates to rifling of a gun barrel to provide grooves and bores in the gun barrel separated by a single edge area and a polygonal area.