Projectile with circumferential and/or longitudinal groove

Abstract

The present invention relates to a projectile, in particular a full metal jacket projectile or partial metal jacket projectile, for ammunition, for example with a caliber of at most 20 mm, in particular of at most 13 mm, comprising an at least partially hollow or solid projectile body with a circumferential and/or longitudinal groove arranged on its inner and/or outer surface, which transitions seamlessly into the adjacent inner and/or outer surfaces of the projectile body and/or has a radius of at least 0.05 mm.

1 . Projectile, in particular full metal jacket or partial metal jacket projectile, for ammunition, for example with a caliber of at most 20 mm, in particular of at most 13 mm, comprising an at least partially hollow or solid projectile body with a circumferential and/or longitudinal groove arranged on its inner and/or outer surface, which transitions seamlessly into the adjacent inner and/or outer surfaces of the projectile body and/or has a radius of at least 0.05 mm. 
     
     
         2 . Projectile, in particular according to  claim 1 , in particular full metal jacket or partial metal jacket projectile, for ammunition for example with a caliber of at most 20 mm, in particular at most 13 mm, comprising an at least partially hollow or solid projectile body with a circumferential groove arranged on its inner and/or outer surface, along which several radial projections extending in the longitudinal direction of the projectile (LG) are arranged at a particularly constant distance from each other, and/or a longitudinal groove, along which several radial projections extending transversely to the longitudinal direction of the projectile (LG) are arranged at a particularly constant distance from each other. 
     
     
         3 . Projectile according to  claim 2 , wherein the radial projections have a width (B) of at most 0.2 mm and/or protrude less than 0.03 mm in the radial direction beyond the inner or outer surface. 
     
     
         4 . Tool, in particular grooving tool, for introducing a circumferential and/or longitudinal groove into a projectile blank to produce a projectile designed in particular according to  claim 1 , comprising an elongated hollow body, in particular a case body, for receiving the projectile blank or for insertion into a cavity of the projectile blank with an inward or outward projecting, in particular circumferential, grooving nose, wherein the hollow body is slit in the longitudinal direction (L) such that, under the action of an external or internal force, the hollow body is particularly elastically deformable, in particular compressible or expandable, so that the grooving nose can press the circumferential and/or longitudinal groove into the projectile blank. 
     
     
         5 . Tool according to  claim 4 , wherein the hollow body has several through-slits extending in the longitudinal direction (L) arranged at a particularly constant distance from each other, and several bending wings each separated by two through-slits. 
     
     
         6 . Tool according to  claim 5 , wherein the through-slits extend from one end of the hollow body over at least 50% of the longitudinal extent of the hollow body to a respective slit base, at the axial height of which a bending joint is fixed, around which an associated bending wing is particularly elastically pivotable. 
     
     
         7 . Tool according to  claim 6 , wherein the grooving nose is arranged in the region of the groove end, wherein in particular the through-slits divide the grooving nose into several segments distributed in the circumferential direction. 
     
     
         8 . Tool according to  claim 5 , wherein the through-slits extend over at least 50% of the longitudinal extent of the hollow body such that an unslitted section is formed at each of the two end sides of the hollow body. 
     
     
         9 . Tool according to  claim 8 , wherein each through-slit opens into two opposite slit bases, at the axial height of which a bending joint is fixed, around which an associated bending wing is particularly elastically pivotable. 
     
     
         10 . Tool according to  claim 8 , wherein each through-slit opens into two opposite slit bases and the grooving nose is arranged in the region of 20% to 80% of a distance, in particular in the region of 40% to 60%, preferably centrally, between the two slit bases. 
     
     
         11 . Tool according to  claim 6 , wherein the bending joints are manufactured in one piece with the associated bending wing, wherein in particular the hollow body is manufactured in one piece and/or wherein the bending joints are designed as film hinges. 
     
     
         12 . Tool according to  claim 4 , wherein the hollow body has a counter bearing at the axial height of the grooving nose, which can be acted upon with a force to deform the hollow body, in particular to preferably elastically pivot the bending wings particularly around the bending joints. 
     
     
         13 . System, in particular grooving station, for introducing a circumferential and/or longitudinal groove into a projectile blank to produce a projectile, comprising a tool designed in particular according to  claim 4 , which has a grooving nose, and a punch-die arrangement for holding the projectile blank, wherein the tool and the punch-die arrangement are coordinated such that the punch-die arrangement can elastically deform, in particular compress or expand, the tool to introduce the circumferential and/or longitudinal groove into the projectile blank. 
     
     
         14 . System according to  claim 13 , wherein the die has a particularly shape-adapted receptacle for the projectile blank and the punch has a driver which is associated with the tool such that during a particularly translational relative movement of the die and the punch, the driver exerts a compressive force on the tool to deform it. 
     
     
         15 . System according to  claim 13 , wherein the punch, in particular the driver, has a conical guide surface over which a continuously increasing compressive force can be generated. 
     
     
         16 . Method for introducing a circumferential and/or longitudinal groove into a projectile blank to produce a projectile, wherein a projectile blank is inserted into a system designed according to  claim 13 , and wherein the projectile blank is locally grooved by an elastic deformation, in particular compression or expansion, of the tool to form the circumferential and/or longitudinal groove.