METHOD FOR MANUFACTURING EMPTY SHELL AND EMPTY SHELL MANUFACTURED BY THIS

摘要

The present invention relates to a method of manufacturing a casing and a casing manufactured by the method, wherein the casing having a branch for ejecting the ignition force of the ignition module composed of an ignition primer and a propellant and a casing unit combining the body is manufactured separately. It is then aimed at manufacturing the casings by combining them to make the casings so that they do not clog, simplifying the manufacturing process, and using the existing rifle casings as ignition modules. In the method of manufacturing a casing according to the present invention, by cutting the block-shaped base material AL to form a center wall 33 therein, a rifle casing mounting portion 32 having a groove shape is opened to the outside inside the center wall. A first step of forming a casing barrel (30) by forming a branch hole (34) in the ceiling of the central wall; An outer cylinder 41 having a space in which first and second openings are formed to communicate with the outside on both sides of the longitudinal direction, and formed with a primer mounting hole 42 formed larger than the outer diameter of the outer cylinder at the first open portion of the outer cylinder. Consisting of a blockage 43, a propellant 44 filled in the interior of the outer cylinder, a stopper 45 mounted on the second open portion of the outer cylinder, a primer 46 penetrated through the primer mounting hole of the blockage portion And a second step of coupling the rifle shell 40 to the rifle shell mounting portion of the casing barrel manufactured by the first step, wherein in the first step, the mounting jaw ( 35) is expanded, and in the second step, the rifle shells are coupled to each other so as to be supported on the seating jaw of the casing barrel to manufacture the casings.