File Name: rifling machines and methods .zip
- Rifling Cutter Head
- US20070258783A1 - Method and apparatus for rifling a firearm barrel - Google Patents
That was the easy way to obtain a barrel. If no barrel blanks or chamber reamers are available when you have a need to make this gun, you will have to make the needed tools to drill, ream, and rifle the barrel yourself.
There are three machining methods that have been developed to rifle barrels. Cutting the grooves incrementally with a single point hook cutter is the oldest method. This technique has been in use for as long as rifle barrels have been made. More recently, the two alternate methods of button-rifling and hammer-forging have been developed to reduce the time, and therefore the cost, associated with making rifle barrels. Both of these recent developments turn a drilled and reamed bore into a rifled bore by cold-swaging the steel of the barrel walls. While cold-swaging the rifling grooves is indeed faster than cutting them, there are several disadvantages associated with this type of machining operation from the perspective of the home shop custom rifle barrel maker.
Many target shooters prefer cut-rifled barrels for their uniformity and close tolerance. We use the button rifling process in order to achieve maximum precision and rigidity of our barrels, no matter if … The R-2A rifling machine uses servo-drives and button rifling to press grooves into the blank with ultimate precision and control. Tank gun barrel forgings; Self-propelled howitzer forgings; Naval guns; Helicopter and aircraft barrels ; Mortar barrels; Increasing system life. Barrels: Beyond the receiver, the key to a rifle's accuracy is its barrel. Our barrels are finalized with perfection resulting to hand finished products for our clients. Gun drills are straight fluted drills which allow cutting fluid either compressed air or a suitable liquid to be injected through the drill's hollow body to the cutting face. The paper discusses a gun barrel of a possibly late 15th-early 16th c.
A computer numerically controlled apparatus is provided for rifling a gun barrel. The apparatus automates the known method of rifling a gun barrel. The apparatus includes a frame, a rod, a cutting tool, a rod holder, and a system of servos to move the rod holder and to rotate the rod. The apparatus includes a CPU runs a program which controls the servos based on operating parameters entered by the operator. The operating parameters are entered through a graphical user interface which also allows the operator to monitor the status of the rifling process. The operator can calibrate the system and enter the twist rate, number of grooves, cut degree, cutting speed, return speed, and number of passes to complete.
Rifling Cutter Head
Barrel Machine by Gerald R. It wasn't enough for me, when I bought a bucketful of flintlock parts from Dixie Gun Works, induding an unrifled barrel blank. Of course, many a muzzleloader who would give his eyeteeth to be shooting a rifle barrel he had built himself, may be well heeled, but there are also many poverty stricken ones who cannot afford such custom work. The barrel machine described and pictured here, of my own l design, is versati e, accurate, minimal in cost, and small enough to fit into the tiniest home workshop. Among the many operations which can be performed on the device are rifling, overboring, finish reaming to land size, chambering, throating and muzzle-relieving of rifle barrels, as well as choke cutting, chambering, lap ping and polishing of shotgun bores.
US20070258783A1 - Method and apparatus for rifling a firearm barrel - Google Patents
This invention relates to the rifling of gun barrels to provide a twist or spin for the projectile. For this purpose, a plurality of shallow helical groves are formed in the bore of the gun. It is the general object of my invention to provide a more rapid and more economical method of producing such helical grooves. More specifically, I provide a method of rifling gun barrels by a series of reaming and broaching operations, which operations develop all of the helical grooves simultaneously, rather than singly as heretofore practiced. My invention further relates to certain ordered procedure which will be hereinafter described and more particularly pointed out in the appended claims.
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