Wrench for ammunition assembly

Abstract

The utility model belongs to the field of ammunition assembly processes of non-seating force shells, and relates to a wrench for ammunition assembly, which consists of a coaxial check ring wrench (1), a coaxial check ring column (2) and an M5 * 8 slotted cylindrical head screw (5), and is an auxiliary tool for stably assembling a non-seating force shell tail check ring. The basic principle of the non-recoil gun is that gunpowder fuel gas is sprayed backwards to offset recoil force generated by bullet launching, forward impact force pointing to a gun muzzle can be generated in the bullet belt extrusion process, a baffle needs to be installed at the bullet tail to bear the pressure of the fuel gas to balance forward impact, and the baffle is broken and disengaged to release the fuel gas to balance the recoil force when the preset pressure is reached. The baffle is fixed to the bullet tail through the check ring in a threaded mode, the check ring needs to be screwed to reach the set torque, the special wrench matched with the bullet tail check ring is designed according to the situation, and the problems that when the check ring is assembled, fixing is not easy, and the fixed torque cannot be applied are solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of non-recoil artillery ammunition assembly process, and is an auxiliary tool for stably assembling a tail check ring of a non-recoil artillery shell. BACKGROUND

[0002] The basic principle of non-recoil artillery is that the backward spraying of gunpowder gas offsets the recoil force generated by the launching of a shell, and a forward thrust force is generated during the extrusion of a shell belt, which requires a baffle to be installed at the tail of the shell to bear the pressure of the gas to balance the forward thrust, and to break off and release the gas to balance the recoil force when a predetermined pressure is reached. The baffle is fixed to the tail of the shell by a check ring through threads, and the check ring needs to be screwed to a set torque.

[0003] In view of the above situation, a special wrench suitable for the check ring of the shell is designed to solve the problems of difficult fixation and inability to apply a fixed torque during the assembly of the check ring. SUMMARY

[0004] The present application is composed of a coaxial check ring wrench 1 , coaxial check ring posts 2 and M5x8 slotted cylindrical head screws 5 . Among them, the coaxial check ring wrench 1 is made of 7A04-T6 aluminum alloy, the front shell is assembled with corresponding positions hollowed out, and 4 recesses for installing coaxial check ring posts are processed, the center of the back is processed with a 17# hexagonal column, which can be connected with a torque wrench through a standard sleeve, and the overall hardness is improved by hard anodic oxidation to improve wear resistance; the coaxial check ring post 2 is made of beryllium copper, which prevents static electricity and has high hardness, and each set of 4 coaxial check ring posts is fixed in the recess of the coaxial check ring wrench by 8 M5x8 slotted cylindrical head screws 5 , which is convenient to replace when the coaxial check ring post is worn out.

[0005] The inner conical surface of the check ring wrench cooperates with the inner side of the check ring and the outer circle of the shell body to ensure the coaxiality of the check ring and the shell body, and to avoid the inclination of the backward spraying fire. BRIEF DESCRIPTION OF DRAWINGS

[0006] The present application has 5 drawings.

[0007] Figure 1 is an assembly drawing of the check ring wrench.

[0008] Figure 2 is a use drawing of the check ring wrench.

[0009] Figure 3 is a schematic view of the check ring.

[0010] Figure 4 is a schematic view of the coaxial check ring wrench. 1

[0011] ​Figure 5 is coaxial with the retaining ring post 2 schematic view.

[0012] Wherein: 1. Coaxial retaining ring wrench 2. Coaxial retaining ring post 3. Retaining ring 4. Housing 5. Screw. DETAILED DESCRIPTION

[0013] In the process of assembling the housing, the sealing rubber ring and the baffle are placed in the corresponding grooves of the housing in sequence, the retaining ring is screwed into the fixed threaded port, and when the bottom surface of the retaining ring contacts the baffle, the retaining ring wrench is clamped into the four notches of the retaining ring, the back of the retaining ring wrench is connected to the torque wrench through the standard sleeve, and a set torque is applied.

Claims

1. A wrench for ammunition assembly, characterized in that: The invention comprises a coaxial retaining ring wrench (1), a coaxial retaining ring column (2) and an M5×8 slotted cylindrical head screw (5), wherein the coaxial retaining ring wrench (1) is formed by processing from 7A04-T6 aluminum alloy, the corresponding position of the front shell assembly is hollowed out, and four grooves for installing the coaxial retaining ring column (2) are processed, and a 17# hexagonal column is processed at the center of the back, and the coaxial retaining ring column (2) is formed by processing from beryllium copper, and each set of four coaxial retaining ring columns is fixed in the groove of the coaxial retaining ring wrench by eight M5×8 slotted cylindrical head screws (5).

2. A wrench for ammunition assembly according to claim 1, characterized in that: The inner conical surface of the retaining ring wrench matches the inner side of the retaining ring and the outer circle of the shell respectively.

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