DE4130455C2 - Mantle bullet and process for its manufacture - Google Patents

Description

The invention relates to a mantle storey of the Deformati oncategory with a one-piece, from tough-deformable Rem material existing shell, which one rear, generally cylindrical guide part and one ogival tapering head part to the top of the projectile points, the guide part and the head part by a Partition formed from each other as a separate component are separated in the shell by a front the partition surrounding, by material shift the projectile jacket generated projection is held. Wei furthermore, the invention relates to a method of manufacture such a mantle storey.

A shell bullet of the above type is the subject the AT-PS 334 787. In the shown in this document Mantle level is the partition wall as a flat disc educated. It becomes after inserting the back core inserted in the shell and through a so-called called bordering, which is a circumferential The indentation of the projectile jacket acts in the projectile man held. In practice, however, there are fears that that when the bullet strikes the rear lead core strongly against the partition that it does not can hold on more. Then there is a complete Disassembly of the floor.  

As DE 38 38 584 A1 shows, it is with jacket bullets sen already known, the partition in one piece with the Bullet jacket and concavely curved towards the bullet tip train. Such a partition is capable of opening able to withstand impact forces better than one separate, only by indentation in the shell held disc as a partition, but is one Mantle bullet only very expensive due to cold forming deliver and therefore undesirably expensive.

The invention is based on the problem of a mantle shot of the type mentioned in such a way that it as inexpensive as possible thanks to deep-drawing technology and forming technology can be produced without the risk of being free there is a partition in the event of a floor impact. Wei Furthermore, the most cost-effective method possible Development of such a mantle bullet developed become.

The first-mentioned problem is thereby ge according to the invention resolves that the partition ke to the side of the projectile tip is gel-concave and the circumferential projection as an inner bead due to axial material displacement from the Projectile jacket from the side of the projectile head is formed.

With such a mantle storey, the partition will take place of an indentation of a material thickening The bullet jacket is therefore in the partition holding area more stable than in the rest of the area. Since the Partition convex towards the rear of the mantle storey is curved, it tends to be larger Assume diameter when opposing the back core the partition presses. Therefore she claws too increasing axial forces on the projectile jacket,  so in addition to the inner bead through this effect a holding force arises.

The shell level is particularly inexpensive to manufacture bar if the partition is made of the same, tough-deformable Material is like the bullet jacket.

The desired spreading effect of the partition in the Ge lap impact occurs reliably when the Partition wall has a smaller wall thickness than the floor jacket in the area of the guide part.

The second problem, namely the creation of a Process for producing the jacket according to the invention shot, is solved according to the invention in that the circumferential projection due to axial material shift from the projectile jacket from the side of the projectile head forth is formed.

Such a method can be carried out very inexpensively and enables the production of a shell bullet, which, on impact, ram-like windings bil det without dividing the shell bullet into numerous parts is disassembled. Therefore, in particular after the procedure bullet bullets made for big game hunting become.

The generation of the inner bead can be particularly simple happen if according to an advantageous further development of the Procedure between the guide part and head part a stu fen-like material accumulation is formed.

Embodiments of the invention are based on the drawings explained in more detail. It shows:

Fig. 1 shows a longitudinal section through an inventive bullet of the deformation category.

Fig. 2 shows a longitudinal section through a jacket deformation projectile according to the invention in four deformation phases of the projectile head flags for ram horn formation.

Fig. 3 shows a longitudinal section through a jacket deformation projectile according to the invention in the deformed final stage with significantly more than two-thirds of residual mass and with retained projectile guide part geometry, as well as symetrically rolled, ram horn-like projectile head flags.

Fig. 4 shows a longitudinal section through a projectile jacket according to the invention in known deep-drawing technology.

Fig. 5 shows a longitudinal section through the projectile jacket according to the invention with a rear hard lead core already introduced with a concave forehead shape, and the form-fitting, conical partition wall.

Fig. 6 shows a longitudinal section through the projectile jacket according to the invention after deformation of the inner bead for hooking the conical partition.

The projectile shown in Fig. 1 has a projectile jacket ( 1 ) which is made in one piece from tough-deformable tombac and is manufactured in known deep-drawing technology. The projectile jacket ( 1 ) is in the region of the cylindrical guide part over the length (L-1) with respect to the wall ( 1 a) of the storey floor, slightly thick-walled. The wall ( 1 b) of the projectile head tapers towards the projectile tip and is equipped with four predetermined breaking points ( 1 c) on the inside. The cylindrical part of the projectile jacket is filled with a hard lead core ( 2 ), the end face of which is directed towards the floor of the storey in the shape of a truncated cone, positively shaped towards the rear of the projectile jacket and the end face which is pointed towards the storey is conical, concave, into which the conical partition ( 3 ) is arranged positively.

The inner bead ( 1 d), which is molded by material displacement after the introduction of the lead core ( 2 ) and partition ( 3 ), presses the partition ( 3 ) into the concave-conical end shape of the lead core ( 2 ) and thereby prevents the rear lead core ( 2 ) from being flung out upon impact of the projectile and ultimately stops the rolling up of the ram horn-like projectile head flags ( 1 e), as shown in FIG. 2. The outer shape of the floor resembles familiar shapes.

The deformation phases shown in Fig. 2 show that the formation of the ram horn-like projectile head flags ( 1 e) is introduced by the increasing projectile head wall ( 1 b) because the increase in wall thickness compared to known projectiles is more extreme, analogously the thicker wall in the area of the cylindrical guide part (L1) of the projectile jacket ( 1 ). The support ( 1 f) of the rolled-up and ram-horn-like projectile head flags ( 1 e) on the cylindrical guide part of the solid projectile jacket ( 1 ) guarantees the desired increase in cross-section of the deformed projectile, even with large game.

Fig. 3 shows the desired cross-sectional enlargement (D 2.5) with the solidly formed and supported on the projectile body ram horn-like projectile flags ( 1 e) and a remaining in front of the partition ( 3 ) rest of the front expansion agent filling ( 4 a) made of fine tin , The cohesion of the projectile jacket ( 1 ) with the rear lead core ( 2 ) and tapered partition ( 3 ) and keeping the cylindrical geometry of the guide part (L1) and the solid, ram-horn rolled projectile flags ( 1 e) and in cooperation with the inner bead ( 1 d) ensure the overall conical-concave funnel formation of the deformed projectile and a secure remaining of expanding agent filling ( 4 ) with a not inconsiderable residual mass ( 4 a), which ultimately leads to the desired very high residual weight of the deformed projectile.

Fig. 4 shows the deep-drawn shell jacket (1) arranged with a in the upper region, step-like material accumulation (1 g) for the subsequent shaping of the inner bead (1 d).

Fig. 5 shows this projectile jacket ( 1 ) with the inserted rear lead core ( 2 ) and the inserted partition ( 3 ), which is positively positioned in the conical-concave shape of the side of the string. The accumulation of material ( 1 g) in front of the inner bead to be formed ( 1 d) is indicated by dashed lines.

Fig. 6 shows the shell jacket (1) with the clothing by Materialverdräng the accumulation of material (1 g) shaped inner bead (1 d) in front of the partition wall (3).

The front of the inner bead (1 d) in the direction of projectile head sharply tapered bullet head wall (1 b) (d 1) to the inner bead, the same wall thickness as the cylindrical guide portion of the shell jacket (1) and straight-keglich tapers upwards to Projectile head towards a very thin wall. The four predetermined breaking points ( 1 c) have been scored on the inside of the projectile head wall ( 1 b) by the form stamp for the inner bead.

Fig. 1 then shows that after inserting the front expansion agent filling ( 4 ) ready-made projectile with inner bead ( 1 d) and tapered partition ( 3 ) with an externally smooth shape.

The equipped with deformation bullets according to the invention Ammunition has the advantage of one over known ammunition extremely high projectile residual weight, with optimal interior and External ballistics, as well as extreme depth and shock effects more than two-thirds floor weight and preprogrammed deformation behavior due to 4 predetermined breaking points on the inside the projectile head wall, as well as the performance class of the propellant loading of cartridges of the same caliber through corresponding diffe limited bullet jacket wall in the guide part of the Bullets.

The process for producing the deformation according to the invention bullets advantageously differs from known ones Procedure for deformation projectiles in such a way that the projectile jacket can be produced in known deep-drawing technology, so it is very expensive is cheap, and which is important for the cohesion of the projectile same inner bead and tapered partition in the final production phase are meaningfully integrated and through transfer forming technology if it can be carried out economically and without problems.

Claims (5)

1. Mantle bullet of the deformation category with a one-piece, from tough-deformable material existing bullet jacket, which has a rear, generally cylindrical guide part and a ogival tapering head part to the projectile tip, the guide part and the head part formed by a partition as a separate construction are separated from one another, which is held in the projectile jacket by a projection in front of the partition wall, generated by material displacement from the projectile jacket, characterized in that the partition wall ( 3 ) is conical-concave to the side of the projectile and the circumferential projection is formed as an inner bead ( 1 d) by axial material shift from the projectile jacket ( 1 ) from the side of the projectile head. 2. Mantle storey according to claim 1, characterized in that the partition ( 3 ) consists of the same, tough-deformable material as the projectile jacket. 3. mantle storey according to claims 1 or 2, characterized in that the partition ( 3 ) has a smaller wall thickness than the projectile jacket ( 1 ) in the region of the guide part. 4. Process for the production of a shell bullet, at a bullet jacket formed by deep drawing, in the a bullet core is inserted through a bullet shell and through a Partition is fixed by the partition through formation a circumferential, due to material shift from the Ge lap jacket generated projection held in the bullet jacket  is characterized in that the circulating Projection due to axial material displacement from the Ge lap coat formed from the side of the bullet head det. 5. The method according to claim 4, characterized in that a step-like material accumulation ( 1 g) is formed to form the inner bead ( 1 d) between the guide part and the head part.