Procedure and punch for the manufacture of granada bodies intended for granada for mortars (Machine-translation by Google Translate, not legally binding)

摘要

Procedure and punch for the manufacture of pomegranate bodies intended for grenades for mortars of 80 to 160 mm. Of caliber, which have an ogive, ellipsoidal or any other shape domed by the center, characterized the procedure because the generation of the inner shape, is inserted into a steel ingot a punch with a cylindrical part of a length of 1 to 11/2 times the gauge and equipped with a truncated cone-shaped head with a rounded front surface, up to approximately the inside length of the grenade body, while the outer shape of the punch head area is molded in the same phase of work with the help of a matrix correspondingly, and because then the open end of the blank thus obtained, in the form of a cup, is inwardly recessed after the outer diameter is reduced by machining with chip removal to adapt it to the shape of the finished grenade body. (Machine-translation by Google Translate, not legally binding)