Method for replacing gun barrel rifling to enable bullet to still automatically rotate and accurately fly

Abstract

The invention discloses a method for replacing rifling of a gun barrel to enable a bullet to still automatically rotate and accurately fly, and belongs to the technical field of gun bore tubes, a bore tube and a bullet are included, the bore tube comprises a tube body, and a plurality of spiral pressure relief holes are formed in the peripheral side wall, close to an outer end opening, of the tube body; the bullet comprises a bullet body, and the tail end of the bullet body is provided with a matching part used for being matched with the spiral pressure relief hole. The spiral pressure relief hole is formed in the outer end opening of the pipe body, the matching part is arranged at the tail end of the projectile body, when impact force of gunpowder explosion pushes the projectile body to move to the outer end opening of the pipe body, the impact force is released from the spiral pressure relief hole, and in the impact force releasing process, the impact force in the releasing process pushes the matching part to rotate; compared with a traditional rifling structure, the rifling structure has the advantages that shooting is farther, the initial speed is higher, the friction area is reduced, heating is slower, and the number of bullets capable of being continuously shot continuously is larger.

Description

Technical Field

[0001] The present invention belongs to the technical field of gun barrels, and specifically relates to a method for replacing the rifling of gun barrels so that the bullet can still spin and fly precisely. Background Art

[0002] Currently, traditional gun barrels are processed with spiral rifling inside the barrel, so that the gun ammunition is squeezed into the rifling and rotates along the rifling and shoots out, achieving gyroscopic spin flight in the air.

[0003] The defects of this technology are that the friction area between the bullet and the gun barrel increases due to the processing of the rifling, resulting in rapid heating. The number of shots that can be continuously cooled naturally is limited. And because of the need to process the rifling, the materials of the gun barrels need to maintain a certain flexibility for easy cutting. This leads to poor wear resistance of the flexible materials, low barrel life, easy heating and deformation, and ultimately the accuracy becomes worse and worse, and even the barrel explodes. Because the friction area increases, each bullet will heat up quickly. And after the gun ammunition is fired, the surface is engraved with concave lines by the rifling, which will affect its spin speed, and the continuous stable time of its high-speed stable spin will be affected and it will spin slower and slower quickly. Generally speaking, in order to increase the self-rotation speed of the gun ammunition, the method of shortening the rifling pitch is usually used. However, the shorter the pitch, the greater the muzzle resistance of the gun ammunition. This forms a situation where the rotation speed and resistance are in a seesaw relationship and it is difficult to achieve a perfect balance between the two. So, only by increasing the gunpowder charge to enhance the explosive power to overcome the increased resistance after shortening the pitch. In this way, the life of the barrel will be further shortened. Therefore, a structural design that removes the rifling of the gun barrel and can still fire gun ammunition with a smoothbore barrel is needed. US Patent US15424626 discloses a spinning projectile and related usage methods, which still have the problem of rifling. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a method for replacing the rifling of gun barrels so that the bullet can still spin and fly precisely, solving the problems in the above background art.

[0005] The object of the present invention is achieved as follows: A method for replacing the rifling of a gun barrel to enable the bullet to still spin and fly accurately includes providing a pressure relief hole at the outer end of the barrel and providing a mating part at the tail of the bullet that cooperates with the pressure relief hole. The barrel includes a barrel body, and a plurality of pressure relief holes are provided on the circumferential side wall of the barrel body near the outer port. During use, the impact force of the gunpowder explosion pushes the bullet body along the barrel body. At this time, the inside of the barrel body has a structure without rifling, which can reduce the friction area between the bullet body and the barrel body, reduce heat generation, and thus avoid damage to the barrel body, greatly extending the service life of the barrel body. By providing a pressure relief hole at the outer port of the barrel body and a mating part at the tail end of the bullet body, when the impact force of the gunpowder explosion pushes the bullet body to the position of the outer port of the barrel body, the impact force is released from the pressure relief hole. During the release process of the impact force, the impact force during the release process pushes the mating part to rotate (turbine principle), and the rotation of the mating part causes the fired bullet body to rotate, achieving the effect of the bullet rotating and moving in the air. When using the same amount of gunpowder, the structural improvement of the present invention can shoot farther, have a higher muzzle velocity, reduce the friction area, generate heat more slowly, and have a larger number of continuously fired bullets compared with the traditional rifling structure. The barrel body can be made of a material with higher hardness and wear resistance, and thus the service life of the barrel body will be greatly extended, which is very obvious for improving the actual economic benefits and the performance of the gun.

[0006] Further, the mating part is a fan blade fixedly connected to the tail end of the bullet body. The fan blade includes a first blade, a second blade, and a third blade; the pressure relief hole can be set as a spiral pressure relief hole. The pressure relief hole can be straight or spiral, left-handed or right-handed. The mating part at the tail of the bullet can be spiral, left-handed or right-handed. The number of fan blades at the tail of the bullet corresponds to the pressure relief hole, or two non-symmetrical fan blades at the tail of the bullet and three pressure relief holes can also be set. Both of them require at least two or more, and any number combination can be used. In order to highlight the innovation of the fan blade at the bullet tail, it can also be designed as a separable structure, and it will be separated from the bullet after the fan blade completes pushing the bullet to achieve spin in the air. The spiral pressure relief hole includes a first hole, a second hole, and a third hole, and the first hole, the second hole, and the third hole are respectively arranged corresponding to the first blade, the second blade, and the third blade. The number of fan blades is not fixed. The optimal number is three, at least two are required, and it can be more, such as four, five, six, seven, etc. By setting the spiral pressure relief hole, multiple functions can be achieved. On the one hand, it can increase the rotation speed of the fan blade bullet. On the other hand, during the pressure relief process, it can ensure that the blades of the fan blade bullet are evenly stressed, stabilize the muzzle attitude of the bullet, and ensure that the bullet will not deviate and fly randomly due to uneven force caused by the recoil of the gun barrel. During use, when the bullet is flying at high speed in the air, a local vacuum low-pressure area will be formed at the tail. The rotation speed of the bullet head can be controlled by shortening or lengthening the area of the fan blade.

[0007] Furthermore, the spiral pressure relief holes are rectangular or triangular. By setting the pressure relief holes in an eccentric spiral form, the air pressure can be instantaneously released in a specified direction, thereby generating a driving force on the fan blades more directly. The pressure relief holes can also be set to be non-eccentric and non-spiral and can also be used. The number of pressure relief holes is the same as the number of fan blades, which is not fixed and can be increased arbitrarily, with at least two pressure relief holes. The distance between the pressure relief holes and the fan blades is evenly distributed. The fan blades can be designed to be torn off after completing self-rotation under high-pressure impact, further optimizing and improving the possible bullet self-rotation time. Without pressure relief holes, the muzzle of the gun will also jump simultaneously due to the recoil force at the moment the bullet exits the barrel. The instantaneously released air pressure will change the impact direction, and the air pressure cannot be evenly distributed at the tail of the bullet at the moment the bullet exits the barrel, which will affect the flight trajectory of the bullet and the shooting accuracy of the bullet. Through the pressure relief holes, it is ensured that the bullet has sufficient self-rotation force before completely exiting the barrel and will no longer be affected by the airflow that changes direction after the muzzle jumps, thus affecting its flight trajectory.

[0008] The mating part is a groove opened at the tail end of the bullet body, and a plurality of eccentric holes are opened on the side wall of the groove. The plurality of eccentric holes are arranged corresponding to the plurality of spiral pressure relief holes. When in use, when the air pressure is released from the eccentric holes, it will also push the bullet to form high-speed self-rotation. The principle of the turbine can be understood as designing the bullet to be able to spin and break away from the fan blades of this turbine under pressure. The bullet is equivalent to the fan blade, and after being loaded onto the gun barrel, it forms an overall closed loop of a turbine. This fan blade can only release pressure when it breaks away from the turbine, and the high-temperature air pressure generated by the explosion of gunpowder will instantaneously push the fan blade bullet to spin at high speed and fly stably in the air.

[0009] Advantages of the present invention: By borrowing the working principle of the turbine, the structures of the existing gun barrel and the supporting bullet are improved, the rifling of the gun barrel is removed, a mating part is provided at the tail of the bullet, and the inner part of the barrel body is a structure without rifling, which can reduce the friction area between the bullet body and the barrel body, reduce heat generation, and thus avoid damage to the barrel body, greatly extending the service life of the barrel body. Under the condition of loading the same amount of gunpowder, the structural improvement of the present invention has a longer shooting distance, a higher initial velocity, a reduced friction area, slower heat generation, and can continuously fire more bullets than the traditional rifled structure. The barrel body can be made of a material with higher hardness and wear resistance, and thus the service life of the barrel body will be greatly extended, which is very obvious for improving the actual economic benefits and the performance of the gun.

[0010] Using the design of the smoothbore barrel structure without rifling of the present invention can also enable the gun (cannon) warhead to achieve gyroscopic rotation and stable flight in the air and accurately hit the target. Description of the Drawings

[0011] Figure 1 It is a schematic diagram of the rectangular spiral pressure relief hole structure of the barrel body of the present invention; Figure 2 Schematic diagram of the triangular spiral pressure relief hole structure of the tube body of the present invention; Figure 3 Schematic diagram of the three fan blades of the projectile of the present invention; Figure 4 Schematic diagram of the six fan blades of the projectile of the present invention; Figure 5 Front view structure diagram of the triangular spiral pressure relief hole tube body of the present invention; Figure 6 Top view structure diagram of the triangular spiral pressure relief hole tube body of the present invention; Figure 7 Rear view structure diagram of the triangular spiral pressure relief hole tube body of the present invention; Figure 8 is of the present invention Figure 7 Cross-sectional view B-B in the middle.

[0012] In the figure: 1 tube body, 2 spiral pressure relief holes, 3 projectile, 4 mating part. Specific implementation manner

[0013] The following further describes the present invention in detail with reference to the accompanying drawings. It should be noted that all the azimuth terms such as up, down, front, back, left, and right appearing in the present invention do not limit the present invention, but are only for clearer description and explanation of the present invention. Embodiment

[0014] As Figures 1-4 shown, this embodiment discloses a method for replacing the rifling of a gun barrel to enable the bullet to still spin and fly precisely. It includes a barrel and a bullet. The barrel includes a tube body, and a plurality of spiral pressure relief holes are provided on the circumferential side wall of the tube body near the outer port; the bullet includes a projectile, and a mating part for cooperating with the spiral pressure relief holes is provided at the tail end of the projectile. During use, the impact force of gunpowder explosion pushes the projectile forward along the tube body. At this time, the inside of the tube body is a structure without rifling, which can reduce the friction area between the projectile and the tube body, reduce heat generation, and thus avoid damage to the tube body, greatly extending the service life of the tube body. By providing spiral pressure relief holes at the outer port of the tube body and a mating part at the tail end of the projectile, when the impact force of gunpowder explosion pushes the projectile to move to the position of the outer port of the tube body, the impact force is released from the spiral pressure relief holes. During the release process of the impact force, the impact force during the release process pushes the mating part to rotate (turbine principle), and the rotation of the mating part further causes the fired projectile to rotate, realizing the effect of the bullet rotating and moving in the air. When using the same amount of gunpowder, the structural improvement of the present invention can shoot farther, have a higher muzzle velocity, reduce the friction area, generate heat more slowly, and have a larger number of continuously fired bullets than the traditional rifling structure. The tube body can be made of a material with higher hardness and wear resistance, and thus the service life of the tube body will be greatly extended, which is very obvious for both the actual economic benefits and the improvement of gun performance.

[0015] The mating part is a fan blade fixedly connected to the tail end of the projectile body. The fan blade includes a first blade, a second blade, and a third blade; the spiral pressure relief holes include a first hole, a second hole, and a third hole, and the first hole, the second hole, and the third hole are respectively arranged corresponding to the first blade, the second blade, and the third blade. The number of fan blades is not fixed. Optimally, it is three. At least two are required, and it can be more, such as four, five, six, seven, etc. By setting the spiral pressure relief holes, multiple functions can be achieved. On the one hand, it can increase the rotation speed of the fan blade bullet. On the other hand, during the pressure relief process, it can ensure that the blades of the fan blade bullet are evenly stressed, stabilize the muzzle attitude of the bullet, and ensure that the bullet will not deviate and fly randomly due to uneven force caused by the recoil of the gun barrel. When in use, during the high-speed flight of the bullet in the air, a local vacuum low-pressure area will be formed at the tail, and the rotation speed of the bullet head can be controlled by shortening or lengthening the area of the fan blade.

[0016] The spiral pressure relief holes are rectangular or triangular. By setting the pressure relief holes in an eccentric spiral form, the air pressure can be instantaneously released in a specified direction, thereby more directly generating a driving force on the fan blade. If the pressure relief holes are not set in an eccentric spiral form, the muzzle of the gun will also jump simultaneously due to the recoil at the moment the bullet exits the chamber. The instantaneously released air pressure will change the impact direction, and the air pressure cannot be evenly distributed at the tail of the bullet at the moment the bullet exits the chamber, which will affect the flight trajectory of the bullet and the shooting accuracy of the bullet. By means of the spiral pressure relief holes, it is ensured that the bullet already has sufficient spin force before completely exiting the chamber and will no longer be affected by the airflow that changes direction after the muzzle jumps, thus affecting its flight trajectory. Embodiment

[0017] Such as Figures 1-4As shown in the figure, this embodiment discloses a method for replacing the rifling of a gun barrel so that the bullet can still spin and fly accurately. It includes a barrel and a bullet. The barrel includes a tube body, and a plurality of spiral pressure relief holes are provided on the circumferential side wall of the tube body near the outer port; the bullet includes a bullet body, and a matching part for cooperating with the spiral pressure relief holes is provided at the tail end of the bullet body. When in use, the impact force of the gunpowder explosion pushes the bullet body forward along the tube body. At this time, the inside of the tube body is a structure without rifling, which can reduce the friction area between the bullet body and the tube body, reduce heat generation, and thus avoid damage to the tube body, greatly extending the service life of the tube body. By providing spiral pressure relief holes at the outer port of the tube body and a matching part at the tail end of the bullet body, when the impact force of the gunpowder explosion pushes the bullet body to the position of the outer port of the tube body, the impact force is released from the spiral pressure relief holes. During the release process of the impact force, the impact force during the release process pushes the matching part to rotate (turbine principle), and the rotation of the matching part further causes the fired bullet body to rotate, realizing the effect of the bullet rotating and moving in the air. When using the same amount of gunpowder, the structural improvement of the present invention can shoot farther, have a higher initial velocity, reduce the friction area, generate heat more slowly, and have a larger number of continuously fired bullets than the traditional rifling structure. The tube body can be made of a material with higher hardness and wear resistance, so that the service life of the tube body will be greatly extended, which is very obvious for improving the actual economic benefits and the performance of the gun.

[0018] The spiral pressure relief holes are rectangular or triangular. The matching part is a groove opened at the tail end of the bullet body, and a plurality of eccentric holes are provided on the side wall of the groove. The plurality of eccentric holes are arranged corresponding to the plurality of spiral pressure relief holes. When in use, when the air pressure is released from the eccentric holes, it will also push the bullet to form high-speed spin. The turbine principle can be understood as designing the bullet to spin and break away from the fan blades of the turbine after being pressurized. The bullet is equivalent to the fan blade, and after being loaded onto the gun barrel, it forms an overall closed loop of the turbine. This fan blade can only have its pressure released when it breaks away from the turbine. The high-temperature air pressure of the gunpowder explosion will instantly push the fan blade bullet to spin at high speed and fly stably in the air.

[0019] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and its concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

[0020] The accompanying drawings of the specification only show and explain a part of the structure of the pressure relief holes and cannot illustrate the shape of the entire gun barrel. The structure of the bullet tail matching part only explains the principle of its spin and does not represent the final form. In order to highlight the innovation and novelty, it can be designed into a separable splicing structure and should also be included in the protection scope.

Claims

1. A method for replacing the rifling of a gun barrel so that the bullet can still spin and fly accurately, characterized in that: include: A pressure relief hole is arranged at the outer end of the bore tube, and a matching part matching with the pressure relief hole is arranged at the tail of the bullet.

2. The method of replacing the rifling of a gun barrel to enable a bullet to still spin and fly accurately according to claim 1, characterized in that: The bore tube comprises a tube body, and a plurality of pressure relief holes are formed on a peripheral side wall of the tube body close to an outer port.

3. The method of replacing the rifling of a gun barrel to enable a bullet to still spin and fly accurately according to claim 2, characterized in that: The pressure release hole is rectangular or triangular.

4. The method of replacing the rifling of a gun barrel to enable a bullet to still spin and fly accurately according to claim 3, characterized in that: The matching portion is a fan blade fixedly connected to the tail end of the projectile body.

5. The method of replacing the rifling of a gun barrel to enable a bullet to spin and fly accurately according to claim 4, characterized in that: The fan blades include a first blade, a second blade and a third blade; the pressure relief holes include a first hole, a second hole and a third hole, and the first hole, the second hole and the third hole are respectively arranged corresponding to the first blade, the second blade and the third blade.

6. The method of replacing the rifling of a gun barrel to enable a bullet to still spin and fly accurately according to claim 1, characterized in that: The matching portion is a groove formed at the rear end of the elastic body, and a plurality of eccentric holes are formed on the side wall of the groove. The plurality of eccentric holes are arranged corresponding to the plurality of pressure release holes.

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