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barrel manufacturing process

A gun barrel and chamber technology, applied in the direction of the barrel, etc., can solve problems such as increasing recoil and reducing straightness

Active Publication Date: 2018-01-16
ENG TECH & MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The problem with this known manufacturing technique is that the welding operation heat treats the metal barrel reducing its straightness
However, the angling of the barrels increases the perceived recoil from the gun because the barrels are angled toward each other to impart lateral momentum to the stock after the gun has been fired

Method used

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Experimental program
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Embodiment Construction

[0045] Embodiments of the invention described with reference to the accompanying drawings provide a new method for manufacturing barrels for multi-barrel guns which solves at least part of the above-mentioned problems.

[0046] In a method according to an embodiment, two or more barrels are machined from the same single metal block. The outer shape of the barrel is formed, and then a hole for the barrel is drilled through the formed outer shape. Both the barrels and the attachment of these barrels to each other are formed directly when the metal block is formed.

[0047] These embodiments differ from known manufacturing techniques in that the barrel exterior is formed prior to drilling, and each barrel is not formed separately and then welded together.

[0048] One of the advantages of these embodiments is that no welding operation is required to attach the barrels to each other, so the straightness of the barrels is not degraded by this further heat treatment. Other advanta...

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PUM

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Abstract

Disclosed herein is a method of manufacturing a method of manufacturing a set of integral gun barrels, the method comprising: a first step (103) of machining a single metal block to form a barrel preform having the finished outer shape of at least a first gun barrel and a second gun barrel, wherein the barrel preform has a solid cross section comprising a first barrel section and a second barrel section; and a second step (105), which is performed after the first step, of machining a coaxial bore in each of the first and second barrel sections of the barrel preform to form a first gun barrel and a second gun barrel, respectively.

Description

technical field [0001] The present invention relates to a method of manufacturing gun barrels. Embodiments of the invention allow barrels to be made straighter, smoother and closer to each other than barrels manufactured using known techniques, thereby increasing the accuracy and usability of the barrels. Background technique [0002] Guns can be used in many sports. For example, shotgun shooting is an increasingly popular multi-event Olympic sport. Competitive rifle shooting is also a popular sport. [0003] The least powerful guns used in competition shooting are air guns. Airsoft guns fire pellets powered by compressed air. The range of the projectile fired is usually 30m or less, so airsoft guns are only suitable for short range shooting. [0004] Guns with longer ranges fire bullets powered by gunpowder. A shotgun fires a cartridge in which multiple projectiles are fired from the gun in a dispersed fashion. Shotguns are typically used to shoot targets in the air ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F41A21/06
CPCF41A21/06
Inventor 詹姆斯·安东尼·斯图尔特
Owner ENG TECH & MFG