Fragmentation projectile

Description

[0001] The invention relates to a fragmentation projectile with a one-piece construction, which has a cylindrical section and a substantially frustoconical section, at the end of which facing away from the cylindrical section the projectile tip is located and in which at least one predetermined breaking point is formed, wherein the frustoconical section is divided into segments and has a channel which has a mouth 6 in the region of the projectile tip.

[0002] A fragmentation bullet of the type mentioned above is known, for example, from DE 20 2020 100 174 U1. Such bullets are characterized by the fact that they are significantly decelerated after penetrating the target, thus preventing penetration. The shallow penetration depth is achieved by the bullet being bent upwards in the area of ​​the truncated cone-shaped section after penetrating the target, which causes the bullet to decelerate. The predetermined breaking points provided in the truncated cone-shaped section also cause the segments to tear off, thus increasing the bullet's effectiveness.

[0003] The fragmentation bullets known from the prior art meet the requirements placed on them. The object of the present invention is to create a fragmentation bullet of the type mentioned above that has equally good bullet properties, but is also easier to manufacture. According to the invention, this object is achieved by the features of patent claim 1.

[0004] The invention creates a fragmentation projectile comparable in effect to known fragmentation projectiles. However, the inventive design allows for simpler and therefore more cost-effective production.

[0005] In a further development of the invention, at least one flaw is located on the lateral surface of the truncated cone-shaped section. These flaws lead to a material weakening in the truncated cone-shaped section of the projectile. They thus increase the reliability with regard to the unfolding and tearing off of the segments.

[0006] Furthermore, the invention provides a method for producing the fragmentation projectile according to the invention as defined in independent claim 4.

[0007] Further developments and refinements of the invention are specified in the remaining subclaims. An embodiment of the invention is illustrated in the drawings and described in detail below. They show: Figure 1: a view of a fragmentation projectile; Figure 2: a section through the fragmentation projectile along the line AA in Figure 1 and Figure 3 the top view of the Figure 1 fragmentation projectile shown.

[0008] The fragmentation projectile chosen as the exemplary embodiment has a one-piece construction. It comprises a cylindrical section 1 and a substantially frustoconical section 2. The projectile nose 3 is located at the end of the frustoconical section 2 facing away from the cylindrical section 1. In the exemplary embodiment, the frustoconical section 2 is divided into four segments 4.1 to 4.4, which are formed by incisions 5.1 to 5.4. In the area of ​​the projectile nose 3, the fragmentation projectile has a muzzle 6 with a star-shaped configuration.

[0009] The frustoconical section 2 has a channel 7 extending along the longitudinal axis of the fragmentation projectile. The channel 7 is designed like a blind hole. The channel 7 has a bell-shaped extension 8, which has its largest diameter in the area of ​​the transition from the cylindrical section 1 to the frustoconical section 2 (see Fig. Figure 2 ). In the exemplary embodiment, there are four defects 9.1 to 9.4 on the lateral surface of the frustoconical section 1. The defects 9 are a result of the manufacturing process. This can be carried out in a single solid forming machine, thus avoiding transport of the semi-finished products. The manufacturing process is as follows: The fragmentation projectile is made from solid material, in the exemplary embodiment from copper wire. Other wire materials are also possible depending on the application. During the production of the fragmentation projectile according to the invention, the wire is first positioned in a forming machine. This can be done in a cycled manner from a wound wire coil. The wire is then cut to length in the forming machine.

[0010] After cutting to length, the next step involves pressing a radius onto both ends of the wire. Then, one of the ends is punched. To do this, a tool with a small, hard point is pressed into the end, creating a small, circular depression. This punched end will later serve as the centering point for the splitting tool. The punched end is then split. This creates a crown-like or tulip-like shape, which in this example has four outwardly curved segments.

[0011] In the next processing step, a cylindrical pin is used to push material toward the future cylindrical section 2. To do this, the cylindrical pin penetrates the wire from the split side to a certain depth and pushes the material forward, creating a predetermined breaking point. After the pin is removed from the wire, the bullet mold is closed, completing the bullet. It then has the shape formed by the cylindrical section 1 and the essentially frustoconical section 2.

[0012] By displacing the material with the help of the pin in the split state, a material-free area is created, which leads to the bell-shaped extension 8 after the mold is closed. At the same time, when the mold is closed, the defects 9 form on the lateral surface of the frustoconical section 2. These lead to a further reduction in the wall thickness of the frustoconical section 2.

[0013] The fragmentation projectile according to the invention is highly reliable and at the same time simple and inexpensive to manufacture. High production speeds can be achieved, especially when manufactured on a single forging machine, thus further reducing manufacturing costs.

Claims

1. A dismantling projectile with a one-piece construction, which has a cylindrical section (1) and a substantially frustoconical section (2), at the end of which facing away from the cylindrical section (1) the projectile tip (3) is located and in which at least one predetermined breaking point is formed, wherein the frustoconical section (2) is divided into segments (4.1, 4.2, 4.3, 4.4) and has a channel (7) which has a muzzle (6) in the region of the projectile tip (3), wherein the channel (7) has a bell-shaped widening (8), the diameter of which increases in a direction facing away from the muzzle and which has its largest diameter in the region of the transition from the cylindrical section (1) to the frustoconical section (2), wherein the dismantling projectile is produced by means of solid forming.

2. The dismantling projectile according to claim 1, characterized in that at least one flaw (9.1, 9.2, 9.3, 9.4) is located on a lateral surface of the frustoconical section (2).

3. The dismantling projectile according to one of the preceding claims, wherein the muzzle (6) is formed as a conical diameter enlargement of the channel (7) and / or the channel (7) has a constant diameter in sections between the muzzle (6) and the bell-shaped widening (8).

4. A method for producing a dismantling projectile formed according to one of the preceding claims, which has a cylindrical section (1) and a substantially frustoconical section (2), at the end of which facing away from the cylindrical section (1) the projectile tip (3) is located and in which at least one predetermined breaking point is formed, wherein the frustoconical section (2) is divided into segments (4.1, 4.2, 4.3, 4.4) and has a channel (7) which has a muzzle (6) in the region of the projectile tip (3), wherein the channel (7) has a bell-shaped widening (8), the diameter of which increases in a direction facing away from the muzzle and which has its largest diameter in the region of the transition from the cylindrical section (1) to the frustoconical section (2), in which the dismantling projectile is produced by means of solid forming, preferably in a single solid forming machine.

5. The method according to claim 4, wherein the dismantling projectile is produced from wire, in particular copper wire, which is cut to length in a solid forming machine and is grained on an end side with a graining tool which is in particular of pointed shape.

6. The method according to claim 5, wherein an end side of a projectile blank, in particular of the wire cut to length, is split into a plurality of segments (4.1, 4.2, 4.3, 4.4) and subsequently a central indentation is introduced into the projectile blank starting from the split end side.

7. The method according to claim 6, wherein the end side of the projectile blank is split starting from a circular central graining introduced by the graining tool.

8. The method according to one of claims 6 or 7, wherein the central indentation is introduced by a pin which, starting from the split end side, penetrates into the projectile blank up to a certain depth and presses material in the direction of the cylindrical section (1).

9. The method according to one of claims 6 to 8, wherein a projectile mould is closed after the central indentation has been introduced, in particular after the pin has been pulled out of the projectile blank, wherein the segments (4.1, 4.2, 4.3, 4.4) are bent over in the direction of a central axis of the projectile in order to form the channel (7) and the bell-shaped widening (8).

10. The method according to claim 9, wherein during the closing of the projectile mould at least one flaw (9.1, 9.2, 9.3, 9.4) is formed on a lateral surface of the frustoconical section (2).