Custom Machine Forms Rifling Gooves

The DeHoff G560-B1, from Kay’s Engineering, is a machine designed to form the rifling grooves in gun barrels.

The DeHoff G560-B1, from Kay’s Engineering, is a machine designed to form the rifling grooves in gun barrels. The barrel is rotated by a three-jaw chuck while a rifling button tool is pulled through the barrel by a hydraulic cylinder. The button tool deforms the rifling grooves into the internal bore of the barrel using a swaging process. All the rifling grooves are cold-formed in a single pass. The machine is part of a turnkey package of gun barrel manufacturing equipment offered by DeHoff, including machines for gundrilling, pull-reaming, button rifling, cut rifling, as well as tooling, stress relieve ovens and air gauging equipment.

It machines barrels from 17 to 50 caliber, and has a slide travel of 60" (1,524 mm). It features a pneumatically-operated chuck with programmable “twist rates.” The rifling “twist rate” is variable from one turn in 5" (127 mm) to one turn in 60" (1,524 mm). The twist rate, pull speed and pull force are all programmable via the Beckhoff control.