Sub-calibre Barrel Alignment Using Inverted Rear Adjustment
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Solution Overview
Problem
Existing methods for aligning sub-calibre barrels in principal weapons require frequent adjustments, leading to wear and maintenance issues, as they rely on bending the barrel to secure alignment, which is not durable and efficient.
Innovation Solution
A method and arrangement that secure the sub-calibre barrel without bending, using a barrel nut with clamping means and fixing screws to align and stabilize the barrel, allowing for easy adjustment of the front end while keeping the rear end loosely held, thus reducing wear and extending the alignment period.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the sub-calibre barrel is aligned by bending the front part while keeping the rear part fixed, then the barrel can be adjusted to achieve alignment, but the barrel is exposed to tensions that cause wear and require frequent adjustments
Solution Approach 1:
Instead of fixing the rear part and bending the front part as in conventional methods, the patent inverts the approach by fixing the front part of the barrel and allowing the rear part to be adjusted. This is achieved through a holder device with a fixing mechanism at the front and an adjusting mechanism at the rear, which includes a adjusting screw that can bend the rear part of the barrel without exposing the entire barrel to tensions.
Solution Approach 2:
The holder device is segmented into distinct functional parts: a fixing mechanism at the front part that secures the barrel, and an adjusting mechanism at the rear part that allows for alignment adjustments. This segmentation allows each part to perform its specific function independently, with the front part providing stability and the rear part providing adjustability, thereby reducing overall barrel wear while maintaining alignment stability.
2Manufacturing precision
If fixing screws are used to adjust the front part of the barrel, then alignment can be achieved, but the barrel requires frequent adjustments and maintenance
Solution Approach 1:
The patent inverts the conventional adjustment approach by performing the bending adjustment at the rear part of the barrel rather than the front part. The adjusting screw at the rear applies force to bend the barrel locally without requiring frequent adjustments, thereby extending the alignment duration while maintaining precision.
Solution Approach 2:
An intermediary adjusting screw is introduced at the rear part of the barrel that acts as a mediator between the holder device and the barrel. This adjusting screw applies controlled force to bend the barrel into the desired alignment position, and once adjusted, it maintains the alignment for extended periods without requiring frequent intervention, thus improving productivity by extending alignment duration.
3Ease of operation
If the rear part of the barrel is kept fixed during adjustment, then the front part can be adjusted, but this method is not reliable for long-term accurate aligning
Solution Approach 1:
The patent inverts the fixed-adjacent arrangement by fixing the front part of the barrel and allowing the rear part to be adjusted. The holder device includes a fixing mechanism at the front that secures the barrel firmly, while the rear part has an adjusting screw that can bend the barrel for alignment. This inversion provides both ease of adjustment and long-term reliability, extending the alignment duration significantly compared to conventional methods.
Data Source
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AI summary
The present invention relates to an arrangement for aligning a sub-calibre barrel (1) for use in a principal weapon barrel comprising i) an insert (4) arranged in said principal weapon barrel ii) front securing means (8) for aligning the sub-calibre barrel (1) iii) rear securing means for securing the rear end of the sub-calibre barrel (1), wherein iii.a) said rear securing means comprise a barrel nut (2) in which said sub-calibre barrel (1) is inserted; iii.b) clamping means (3a, 3b) securing said barrel nut (2) to said insert (4) and said clamping means (3a, 3b) in said principal weapon barrel. The invention also relates to a training weapon comprising the arrangement and a method of aligning the training weapon.