Dynamic test method for verifying anti-overload performance of fuse ignition module

Abstract

The invention provides an anti-overload performance verification dynamic test method for a fuse ignition module. The method comprises the following steps: preparing a test device; a piston in the control working cylinder is just exposed out of the working cylinder; before a test, a tested fuze ignition module is arranged in the test bomb tool, a trigger line of the tested fuze ignition module is connected with a conductive copper sheet on an insulating support, a circuit ground wire outgoing line is connected to a shell of the test tool, and the test tool is fixed to a working piston of an air hammer; an impact piston is controlled to move to the top of the working cylinder, and a compression piston is controlled to move upwards to generate pressure; enabling the testing tool to complete the impact action; and reading test data, and judging whether the ignition module is normal or not. The tool used in the experiment method provided by the invention is convenient to manufacture, the equipment is simple to operate, and the experiment device is low in cost. In the experiment process, an impact acceleration signal with the amplitude of (1-6) * 10 < 4 > g and the pulse width of 0.1 ms-1ms can be generated, the impact energy is large, the impact environment is controllable, and the repeatability is good.

Description

Technical Field

[0001] The invention relates to the technical field of dynamic testing of penetration fuzes, and in particular to a dynamic testing method for verifying the overload resistance performance of a fuze firing module. Background Art

[0002] As a control system that controls the ammunition warhead to detonate at the best time, the fuze experiences severe impact environments during operation. Especially for penetrating ammunition fuzes, its key components also need to have good impact resistance.

[0003] In the research of penetrating ammunition fuzes, the existing technology generally uses test devices such as Machete hammer, drop table or Hopkinson bar to conduct impact simulation tests on fuzes. Different test methods have different test capabilities and loading characteristics. The Machete hammer test is limited by the strength of the hammer arm and the mass of the test piece, so the impact acceleration amplitude is small and the duration is short. The drop table test equipment has a limited lifting height and the mass of the test product is limited, so the impact acceleration amplitude is small. The Hopkinson bar test bench can obtain a higher acceleration, but the loading mass is very limited, and the test equipment is expensive. Therefore, considering the gap between the dynamic test of the penetration fuze and the actual needs, the test method is still lacking in achieving long-term high-impact test conditions. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a dynamic test method for verifying the overload resistance performance of a fuze ignition module to solve the problems raised in the above-mentioned background technology. The test process of the present invention is simple, can provide a high-impact overload environment for a long time, and has low cost, good applicability and repeatability, and is suitable for a large number of overload resistance research tests.

[0005] In order to achieve the above object, the present invention is implemented by the following technical solution: a dynamic test method for verifying the overload resistance performance of a fuze ignition module, comprising the following steps:

[0006] Step 1: Prepare the test equipment;

[0007] Step 2: Control the piston inside the working cylinder by the valve mechanism handle until it just comes out of the working cylinder;

[0008] Step 3: Before the test, the fuze ignition module to be tested is installed in the test bomb tooling, the trigger wire of the fuze ignition module to be tested is connected to the conductive copper sheet on the insulating support, the circuit ground lead wire is connected to the test tooling housing, and the test tooling is fixed on the working piston of the air hammer;

[0009] Step 4: Control the impact piston inside the working cylinder to move to the top of the working cylinder, and control the compression piston to move upward to generate pressure;

[0010] Step 5: Make the test fixture complete the impact action with the anvil;

[0011] Step 6: Read the test data and determine whether the ignition module works normally under a large overload environment through the test data.

[0012] Furthermore, the test device in step one includes an air hammer, a test fixture, a conductive copper sheet, an insulating support and a wire, wherein the air hammer part is composed of a bracket, a gas distribution mechanism, a compression piston, a compression cylinder, an upper rotary valve, a lower rotary valve, a working cylinder, an impact piston and an anvil, wherein the insulating support is made of elastic non-metallic material as a whole and can be compressed under pressure. During the test, it is placed on the air hammer anvil to support the missile copper sheet.

[0013] Furthermore, in the step 2, the upper and lower rotary valves are controlled by the handle of the gas distribution mechanism, the upper and lower rotary valves are opened, the pressure in the compression cylinder is controlled, and the compression piston allows the compressed air to slowly enter the upper part of the working cylinder, slowly pushing the working piston downward, so that the bottom of the impact piston inside the working cylinder is exposed to the outside of the working cylinder.

[0014] Furthermore, the fuse ignition module under test in step three is powered by a lithium battery, and the anvil of the air hammer fixes the air hammer test device through a mounting flange and a locking nut.

[0015] Furthermore, in step 4, the upper and lower rotary valves are controlled by the valve mechanism handle, the upper and lower rotary valves are opened, the compression piston of the compression cylinder moves downward, and the impact piston moves to the top of the working cylinder.

[0016] Furthermore, the upper and lower rotary valves are closed, and the valve mechanism controls the compression piston to move upward to generate a certain pressure.

[0017] Furthermore, in step five, the upper rotary valve is opened by controlling the valve mechanism handle, so that compressed air enters the upper part of the working cylinder, pushing the working piston to move downward, and finally completing the impact.

[0018] Furthermore, after the air hammer impact is completed, the test fixture and the ignition module are removed, and the test data is read out through a readback tool.

[0019] Furthermore, different impact overload environments can be achieved by adjusting the air intake pressure of the air hammer through the valve mechanism.

[0020] Furthermore, before the test, the test fixture is adaptively changed according to the structure of the product under test to meet the needs of impact tests of different test products. During the test, a wire is used to connect the unlocking signal terminal and the conductive copper sheet of the ignition module under test.

[0021] Beneficial effects of the present invention:

[0022] 1. The equipment used in the dynamic test method for verifying the overload resistance of the fuze ignition module is composed of a test fixture and an air hammer device. The fixture is easy to make, the equipment is simple to operate, and the test device cost is low.

[0023] 2. The dynamic test method for verifying the overload resistance of the fuze firing module can generate an amplitude of (1-6)×10 4 g. Impact acceleration signal with a pulse width of 0.1ms to 1ms.

[0024] 3. The present invention adopts a new test method for verifying the overload resistance of the fuze ignition module. The impact energy generated in this method is large, the impact environment is controllable, and the overall repeatability is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A test flow chart of a dynamic test method for verifying the overload resistance performance of a fuze ignition module of the present invention;

[0026] Figure 2 It is a schematic diagram of the structure of an air hammer used in a dynamic test method for verifying the overload resistance performance of a fuze ignition module of the present invention;

[0027] Figure 3 It is a functional block diagram of the test device connection used in the test method of the present invention;

[0028] In the figure: 1. air hammer; 2. test tooling; 3. conductive copper sheet; 4. insulating support; 5. wire; 101. anvil; 102. gas distribution mechanism; 103. compression piston; 104. compression cylinder; 105. upper rotary valve; 106. lower rotary valve; 107. working cylinder; 108. impact piston; 109. bracket. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0030] See also Figures 1 to 3 The present invention provides the following technical solutions: a dynamic test method for verifying the overload resistance performance of a fuse ignition module, the test device used in the method includes: an air hammer 1, a test fixture 2, a conductive copper sheet 3, an insulating support 4 and a wire 5.

[0031] In this embodiment, if Figure 3 As shown, the air hammer 1 includes: an anvil 101, a gas distribution mechanism 102, a compression piston 103, a compression cylinder 104, an upper rotary valve 105, a lower rotary valve 106, a working cylinder 107, an impact piston 108 and a bracket 109. The anvil 101 is effectively fixed to the device body through a mounting flange and a locking nut.

[0032] In this embodiment, if Figure 2 As shown, the test fixture 2 is fixed on the working piston of the air hammer 1, and the fuse ignition module to be tested is installed on the test fixture 2.

[0033] One end of the wire 55 is connected to the unlocking signal terminal of the ignition module under test, and the other end is connected to the conductive copper sheet 3.

[0034] In this embodiment, the anti-overload performance verification test process of the fuze ignition module is as follows:

[0035] Step 1 is the preparation of the test device: the upper and lower rotary valves 106 are controlled by the handle of the gas distribution mechanism 102, the upper and lower rotary valves 106 are opened, the pressure in the compression cylinder 104 is controlled, and the compression piston 103 allows the compressed air to slowly enter the upper part of the working cylinder 107, and slowly pushes the working piston downward to make the working piston just out of the working cylinder 107;

[0036] Step 2 is the connection of the test device: before the test, the fuse ignition module under test is installed in the test fixture 2, the fuse ignition module under test itself is powered by a lithium battery, the unlocking signal line (TS signal) of the fuse ignition module under test is connected to the conductive copper sheet 3 on the insulating support 4, the circuit ground line (GND) lead-out line is connected to the shell of the test fixture 2, and the test fixture 2 is fixed on the working piston of the air hammer 1.

[0037] Step 3 is the operation of the test device: the upper and lower rotary valves 106 are controlled by the handle of the gas distribution mechanism 102, the upper and lower rotary valves 106 are opened, the compression piston 103 of the compression cylinder 104 moves downward, the working piston moves to the top of the working cylinder 107, the upper and lower rotary valves 106 are closed, and the gas distribution mechanism 102 controls the compression piston 103 to move upward to generate a certain pressure;

[0038] The handle of the gas distribution mechanism 102 is controlled to open the upward rotary valve 105, and the compressed air will enter the upper part of the working cylinder 107, pushing the working piston to move downward, thereby driving the test fixture 2 to complete the impact action with the anvil 101;

[0039] During the falling process, the test fixture 2 first contacts the conductive copper sheet 3. At this time, the unlocking signal of the ignition module under test is connected to the GND signal, and the ignition module under test starts the recording function to record the overload signal of the collision between the test fixture 22 and the anvil 101, as well as the delayed ignition signal of the ignition module under test.

[0040] Step 4 is the test data analysis: after the air hammer 1 completes the impact, the test fixture 2 and the ignition module are removed, the test data is read out by the read-back tool, and the test data is used to determine whether the ignition module works normally under a large overload environment.

[0041] The equipment used in the experimental method provided by the present invention is composed of a tooling and an air hammer 1. The tooling is easy to make, the equipment is simple to operate, and the cost of the experimental device is low. During the experiment, an amplitude of (1-6)×10 4 g. Impact acceleration signal with pulse width of 0.1ms to 1ms. It has large impact energy, controllable impact environment and good repeatability.

[0042] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention.

[0043] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A dynamic test method for verifying the overload resistance performance of a fuze ignition module, characterized in that: The following steps are involved: Step 1: Prepare the test equipment; Step 2: Control the piston inside the working cylinder by the valve mechanism handle until it just comes out of the working cylinder; Step 3: Before the test, the fuze ignition module to be tested is installed in the test bomb tooling, the trigger wire of the fuze ignition module to be tested is connected to the conductive copper sheet on the insulating support, the circuit ground lead wire is connected to the test tooling housing, and the test tooling is fixed on the working piston of the air hammer; Step 4: Control the impact piston inside the working cylinder to move to the top of the working cylinder, and control the compression piston to move upward to generate pressure; Step 5: Make the test fixture complete the impact action with the anvil; Step 6: Read the test data and determine whether the ignition module works normally under a large overload environment through the test data.

2. The dynamic test method for verifying the overload resistance performance of a fuze ignition module according to claim 1 is characterized in that: The test device in step 1 includes an air hammer, a test fixture, a conductive copper sheet, an insulating support and a wire, wherein the air hammer part is composed of a bracket, a gas distribution mechanism, a compression piston, a compression cylinder, an upper rotary valve, a lower rotary valve, a working cylinder, an impact piston and an anvil, wherein the insulating support is made of elastic non-metallic material as a whole and can be compressed under pressure. During the test, it is placed on the air hammer anvil to support the missile copper sheet.

3. The dynamic test method for verifying the overload resistance performance of a fuze ignition module according to claim 1 is characterized in that: In the step 2, the upper and lower rotary valves are controlled by the handle of the gas distribution mechanism, the upper and lower rotary valves are opened, the pressure in the compression cylinder is controlled, and the compression piston allows the compressed air to slowly enter the upper part of the working cylinder, slowly pushing the working piston downward, so that the bottom of the impact piston inside the working cylinder is exposed to the outside of the working cylinder.

4. The dynamic test method for verifying the overload resistance performance of a fuse ignition module according to claim 1 is characterized in that: The ignition module of the fuse under test in the step three is powered by a lithium battery, and the anvil of the air hammer fixes the air hammer test device through a mounting flange and a locking nut.

5. The dynamic test method for verifying the overload resistance performance of a fuze ignition module according to claim 1 is characterized in that: In the step 4, the upper and lower rotary valves are controlled by the valve mechanism handle, the upper and lower rotary valves are opened, the compression piston of the compression cylinder moves downward, and the impact piston moves to the top of the working cylinder.

6. A dynamic test method for verifying the overload resistance performance of a fuze ignition module according to claim 5, characterized in that: Close the upper and lower rotary valves, and the valve mechanism controls the compression piston to move upward to generate a certain pressure.

7. The dynamic test method for verifying the overload resistance performance of a fuze ignition module according to claim 1 is characterized in that: In step five, the upper rotary valve is opened by controlling the valve mechanism handle, so that compressed air enters the upper part of the working cylinder, pushing the working piston downward, and finally completing the impact.

8. The dynamic test method for verifying the overload resistance performance of a fuze ignition module according to claim 1 is characterized in that: After the air hammer impact is completed, remove the test fixture and ignition module, and read the test data through the readback tool.

9. A dynamic test method for verifying the overload resistance performance of a fuze ignition module according to claim 8, characterized in that: Different impact overload environments can be achieved by adjusting the air hammer inlet pressure through the valve mechanism.

10. A dynamic test method for verifying the overload resistance performance of a fuze ignition module according to claim 1, characterized in that: Before the test, the test fixture is adaptively changed according to the structure of the product under test to meet the needs of impact tests of different test products. During the test, a wire is used to connect the unlocking signal terminal and the conductive copper sheet of the ignition module under test.

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