An impact device and impact method for a sighting device impact test

Abstract

This invention provides an impact method for a sight impact test, comprising the following steps: S1. Preparing a calibration instrument, a sight to be tested, and an impact device. The impact device includes a base, a hammer, a clamping device, and a stage. The calibration instrument is fixed to the base, and the sight to be tested is clamped onto the stage; S2. The stage is pushed to a first reference position by the clamping device, and then the aiming point of the sight to be tested is aligned with any scale point of the calibration instrument; S3. The stage is returned to a state where it can be slidably connected to the base; S4. The hammer impacts the stage; S5. The hammer stops impacting the stage, and the stage is again aligned to the first reference position. The accuracy of the impact test is then observed. This sight impact test method, by fixing the stage to the first reference position before and after the impact test, eliminates external factors that may cause displacement of the aiming point of the sight to be tested relative to the scale point of the calibration instrument, thereby improving the accuracy of the impact test evaluation.

Description

Technical Field

[0001] This invention relates to the field of sight inspection technology, and in particular to an impact device and impact method for sight impact testing. Background Technology

[0002] Firearms generate significant recoil during firing, subjecting sights mounted on them to tremendous impact. Therefore, sights undergo impact testing before leaving the factory to ensure they remain functional even under such conditions. Currently, the standard practice is to simulate the recoil of a firearm using a dedicated impact testing bench. For example, utility model patent ZL201821830987.X discloses a gun sight impact resistance testing bench, comprising a frame, a mounting platform, an impact hammer, a motor, and a transmission device. The mounting platform and impact hammer are slidably connected to the upper surface of the frame, and the impact hammer is connected to the motor via the transmission device. During the impact test, the sight is mounted on the mounting platform, and then the motor drives the impact hammer to strike the platform, thus simulating the recoil of a firearm. However, for sights, it is necessary not only to test the structural strength of the sight, but also to test whether the aiming point of the sight has shifted after the impact test. In the aforementioned utility model patent, in order to allow the mounting table to slide on the upper surface of the frame, there must be an assembly gap between the mounting table and the upper surface of the frame. Due to the existence of this assembly gap, it cannot be guaranteed that the stopping position of the mounting table is consistent with the position before the impact after the impact test. Therefore, it is impossible to determine whether the aiming point of the sight has shifted or the mounting table has shifted, which will affect the judgment result of the sight impact test and reduce the accuracy of the impact test. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an impact device and impact method for sight impact testing, which can ensure the accuracy of sight impact testing.

[0004] Regarding an impact device for a sight impact test, the technical solution adopted by the present invention is as follows: an impact device for a sight impact test includes a base, a stage slidably connected to the base, a reset member connected between the base and the stage to reset the stage after being impacted, a hammer slidably connected to the base and used to impact the stage, the movement direction of the hammer being consistent with the movement direction of the stage, and a clamping device fixedly connected to the base, the clamping device having a clamping end facing the stage, the clamping end being used to connect with the stage to push the stage to a stop at a first reference position.

[0005] Compared with existing technologies, the impact device of this sight impact test can push the stage to the first reference position through the clamping device, thereby fixing the stage in the first reference position before and after the impact test. In other words, the sight under test is fixed in the same reference position to judge the result of the impact test. This eliminates external factors that may cause the aiming point of the sight under test to shift relative to the scale point of the calibrator, thus more accurately judging whether the aiming point of the sight under test will shift after the impact test, thereby improving the accuracy of the impact test evaluation.

[0006] Furthermore, the impact device also includes an impact cylinder fixedly connected to the base and a pressure regulating valve connected to an external air source. The impact cylinder has a stroke air inlet and a return air inlet. The impact hammer is slidably disposed between the stroke air inlet and the return air inlet. The stroke air inlet and the return air inlet are alternately connected to the external air source through the pressure regulating valve to drive the impact hammer to reciprocate along the length of the impact cylinder and impact the platform.

[0007] Furthermore, the impact device also includes a slide rail fixedly connected to the base. The slide rail includes two parallel straight rods, the length of which extends along the movement direction of the impact hammer. The platform is slidably connected to the straight rods.

[0008] Furthermore, the impact device also includes a counting device for selectively detecting the number of reciprocating motions of the impact hammer or the platform. The counting device includes a control box and a proximity sensor electrically connected to the control box. The control box is used to receive the signal output by the proximity sensor, and the proximity sensor is selectively positioned within the stroke range of the impact hammer or the platform.

[0009] Furthermore, in one embodiment, the base is provided with a fixed plate facing the stage, the impact device further includes an adjusting member movably connected to the fixed plate, and the adjusting member can move toward the stage, the resetting member has two connecting ends, the two connecting ends being respectively connected to the adjusting member and the stage.

[0010] Furthermore, in another embodiment, the base is provided with a fixed plate facing the stage, the impact device further includes an adjusting member movably connected to the stage, and the adjusting member can move toward the fixed plate, the resetting member has two connecting ends, the two connecting ends being respectively connected to the adjusting member and the stage.

[0011] Furthermore, the impact device also includes a solenoid valve for controlling the start and stop of the impact cylinder, the fluid passage of the solenoid valve being connected in series with the fluid passage of the pressure regulating valve.

[0012] Preferably, the inlet of the solenoid valve is connected to the outlet of the pressure regulating valve, so that the compressed gas from the external gas source passes through the pressure regulating valve and the solenoid valve in sequence and then enters the stroke inlet and the return inlet alternately.

[0013] Regarding an impact method for a sight impact test, the technical solution adopted in this invention is: an impact method for a sight impact test, comprising the following steps:

[0014] S1. Prepare the sight to be tested, the calibrator, and the impact device as described above. Fix the calibrator to the base and clamp the sight to be tested onto the stage.

[0015] S2. The stage is pushed to the first reference position by the clamping device, and then the aiming point of the sight to be tested is made to coincide with any scale point of the calibrator;

[0016] S3. Return the stage to its sliding connection with the base;

[0017] S4. Cause the hammer to impact the platform;

[0018] S5. Stop the hammer from impacting the platform, and then stop the platform at the first reference position again. Then observe whether the aiming point still coincides with the scale point.

[0019] Compared with existing technologies, the impact test method of this sight uses a platform fixed at the first reference position before and after the impact test, that is, fixing the sight under test at the same reference position to judge the impact test results. This eliminates external factors that may cause the aiming point of the sight under test to shift relative to the scale point of the calibrator, thereby more accurately judging whether the aiming point of the sight under test will shift after the impact test, and thus improving the evaluation accuracy of the impact test.

[0020] Preferably, the scale point is the center point of the calibrator. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present invention, and are not intended to limit the present invention.

[0022] Figure 1 This is a schematic diagram of the structure of an impact device (impact hammer impact) according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the impact device according to an embodiment of the present invention (moving platform);

[0024] Figure 3 This is a schematic diagram of the impact device according to an embodiment of the present invention (impact hammer and platform reset);

[0025] Figure 4 This is another structural schematic diagram of the impact device according to an embodiment of the present invention (impact hammer and platform reset);

[0026] Figure 5 This is a schematic diagram of the assembly structure of the slide rail and the platform according to another embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the impact device according to another embodiment of the present invention (impact hammer and platform reset);

[0028] Figure 7 This is a schematic diagram of the impact device according to another embodiment of the present invention (moving platform);

[0029] Figure 8 This is a schematic diagram of the impact device according to another embodiment of the present invention (impact hammer and platform reset);

[0030] Figure 9 This is a schematic diagram of the structure of an impact device according to an embodiment of the present invention (the base includes a support and a working plate);

[0031] Figure 10 This is a schematic top view of the impact device according to an embodiment of the present invention (impact hammer and platform reset);

[0032] Figure 11 This is a schematic top view of the impact device according to an embodiment of the present invention (with the platform moving);

[0033] Figure 12 This is a flowchart of an impact method according to an embodiment of the present invention. Detailed Implementation

[0034] It should be noted that the terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "upper," "lower," "left," "right," "front," "back," "top," and "bottom," etc., used in this invention are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0035] As described in the background section, existing sight impact testing devices, when conducting sight impact tests, cannot ensure that the stopping position of the mounting table is consistent with the initial position of the mounting table before the impact due to the assembly gap between the mounting table and the frame. Therefore, it is impossible to determine whether the aiming point of the sight has shifted or the mounting table has shifted, which will affect the judgment result of the sight impact test and reduce the accuracy of the impact test.

[0036] To better describe the technical solution of the present invention, reference will be made to... Figures 1 to 12 This paper describes embodiments of the impact device and impact method provided by the present invention. It should be noted that, for ease of understanding of the technical solution of the present invention, Figures 1 to 4 The impact cylinder 4 shown is a sectional view. Figures 1 to 9 This is an isometric view. Figures 10 to 11 This is a top view.

[0037] like Figures 1 to 4 As shown, an embodiment of the present invention provides an impact device for a sight impact test, including a base 1, a platform 2, a reset component 3, an impact cylinder 4, a pressure regulating valve 5, and a slide rail 6. The impact cylinder 4 is fixed to the base 1 and includes a cylinder body 44. The cylinder body 44 is provided with a stroke air inlet 42, a return air inlet 43, and an impact hammer 41 located between the stroke air inlet 42 and the return air inlet 43. The pressure regulating valve 5 is connected to an external air source. The stroke air inlet 42 and the return air inlet 43 are alternately connected to the external air source through the pressure regulating valve 5 to drive the impact hammer 41 to reciprocate along the length direction of the impact cylinder 4. The impactor 41 moves and impacts the platform 2. The slide rail 6 is fixed to the base 1, and the length of the slide rail 6 extends along the movement direction of the impactor 41. The platform 2 is slidably connected to the slide rail 6, and the platform 2 is provided with an impact surface 2a facing the impactor 41 and a buffer surface 2b opposite to the impact surface 2a. The impact surface 2a is located within the stroke range of the impactor 41, so that the impactor 41 can impact the platform 2. The base 1 is provided with a fixed plate 11 opposite to the buffer surface 2b. The two ends of the reset member 3 are respectively connected to the fixed plate 11 and the buffer surface 2b, so that the platform 2 resets after being impacted.

[0038] It should be noted that the fixing plate 11 can also be opposite to other surfaces of the platform 2, that is, surfaces other than the impact surface 2a and the buffer surface 2b, such as the left, right, top, or bottom surface of the platform 2. The two ends of the reset member 3 are respectively connected to the fixing plate 11 and the side of the platform 2 opposite to the fixing plate 11, so that the platform 2 can be reset after being impacted. The reset member 3 can be an elastic element with two connecting ends, such as a spring, a sheet, or an elastic rubber column. The reset member 3 can also be a component with a telescopic end, such as a cylinder.

[0039] Understandably, the stroke inlet 42 and the return inlet 43 can be alternately connected to an external air source through the pressure regulating valve 5 via the gas distributor 20 located between the impact cylinder 4 and the pressure regulating valve 5. The gas distributor 20 can be a reciprocating slide valve, the inlet of which is connected to the outlet of the pressure regulating valve 5, and the two outlets of which are connected to the stroke inlet 42 and the return inlet 43 respectively. When the valve core of the slide valve slides back and forth, the stroke inlet 42 and the return inlet 43 can be alternately connected to an external air source through the pressure regulating valve 5. The gas distributor 20 can also be a stroke solenoid valve and a return solenoid valve. The inlet of the stroke solenoid valve and the inlet of the return solenoid valve are both connected to the outlet of the pressure regulating valve 5. The outlet of the stroke solenoid valve is connected to the stroke air inlet 42, and the outlet of the return solenoid valve is connected to the return air inlet 43. By switching the stroke solenoid valve and the return solenoid valve on and off alternately, the stroke air inlet 42 and the return air inlet 43 can be connected to the external gas source through the pressure regulating valve 5 in turn.

[0040] Specifically, such as Figure 1 and Figure 2 As shown, during the impact test, the gas distributor 20 allows compressed gas from an external gas source to enter the cylinder 44 through the stroke inlet 42 and pushes the hammer 41 to move rapidly toward the platform 2 until the hammer 41 strikes the impact surface 2a of the platform 2, causing the platform 2 to be impacted and move, thus simulating the recoil of a firearm. By mounting the optical product on the platform 2, the impact force experienced by the optical product during firearm firing can be simulated, thereby testing the strength of each component of the optical product and the connection strength between components; for example Figure 3As shown, after the impact is completed, the gas distributor 20 allows compressed gas from the external gas source to enter the cylinder 44 through the return inlet 43, pushing the impact hammer 41 to reset in the opposite direction of the impact. The platform 2 is reset under the action of the reset member 3, thus completing one impact cycle. When the gas distributor 20 allows compressed gas from the external gas source to enter the cylinder 44 again through the stroke inlet 42, the next impact cycle begins. In addition, it can be understood that the greater the pressure of the compressed gas entering the cylinder 44, the greater the impact acceleration of the impact hammer 41. At the same time, because the impact acceleration is greater, the time it takes for the impact hammer 41 to complete one impact cycle is shorter, so the impact cycle is shorter. The pressure regulating valve 5 maintains the pressure of the compressed gas entering the cylinder 44 at a certain value. After adjustment, the relationship between the compressed gas pressure, the impact acceleration of the impact hammer 41, and the impact frequency of the impact hammer 41 can be determined. If an impact test is required with a specific impact acceleration and frequency (e.g., an impact acceleration of 100g and an impact frequency of 300 times / minute, where g is the acceleration due to gravity), adjusting the pressure regulating valve 5 to maintain the compressed gas entering the cylinder 44 at the corresponding value will meet the impact test requirements. This method is not only convenient but also simple and quick to operate. The slide rail 6 constrains the movement direction of the platform 2, ensuring that after being impacted, the platform 2 can only move in a straight line along the length of the slide rail 6, ensuring the stability of the impact process and facilitating the rapid reset of the platform 2.

[0041] Therefore, compared with existing technologies, this impact device uses the reciprocating motion of the impact cylinder's hammer, driven by an external air source, to impact the platform, thereby simulating the recoil of a firearm. Since both the stroke and return of the hammer are driven by gas, the impact can be continuous and rapid. Furthermore, both the impact acceleration and frequency are controllable; that is, by adjusting the gas pressure entering the impact cylinder, the impact acceleration and frequency of the hammer can be changed—the higher the gas pressure, the greater the impact acceleration and frequency. Therefore, this invention is not only simple in structure and easy to install, with low manufacturing costs, but also allows for adjustment of the impact acceleration and frequency according to the requirements of impact tests, making it widely applicable.

[0042] like Figure 4 The diagram shown is for ease of understanding of the technical solution of this invention. Figure 4(The diagram shows a partial fracture of the straight rod 61). To prevent the platform 2 from overturning during impact and to make it easier to slide, in this embodiment, the slide rail 6 includes two parallel straight rods 61. The length of the straight rods 61 extends along the movement direction of the impact hammer 41. The platform 2 is slidably connected to the straight rods 61. It should be noted that the slidable connection means that the platform 2 has a recess 23 that can restrict the straight rods 61 from detaching from the platform 2. For example, it can be a through hole or a groove with an opening smaller than the maximum diameter of the straight rod 61. The straight rod 61 passes through the recess 23 to support the platform 2, so that the platform 2 can only slide along the length of the straight rod 61. The two roughly parallel straight rods 61 can restrain each other, preventing the platform 2 from overturning during impact, while also having low friction to facilitate the sliding of the platform 2. In this embodiment, two parallel straight rods 61 are arranged on the left and right sides of the platform 2, respectively; in other embodiments, the two parallel straight rods 61 can be arranged on the upper and lower sides of the platform 2, or both can be arranged on the same side of the platform 2.

[0043] Preferably, the cross-section of the straight rod 61 is either circular, square, or trapezoidal.

[0044] like Figure 5 As shown, in another embodiment, the slide rail 6 includes a dovetail groove 62, the length of which extends along the movement direction of the impact hammer 41, and the platform 2 is provided with a protrusion 22 that mates with the dovetail groove 62. The protrusion 22 is embedded in the dovetail groove 62 and can slide along the length of the dovetail groove 62.

[0045] like Figure 4 As shown, to control the impact frequency, in this embodiment, the impact device further includes a counting device 7 for detecting the number of reciprocating motions of the impact hammer 41. The counting device 7 includes a control box 71 and a proximity sensor 72 electrically connected to the control box 71. The control box 71 receives the signal output by the proximity sensor 72. The proximity sensor 72 is installed in the cylinder body 44 of the impact cylinder 4, and is within the stroke range of the impact hammer 41. It is understood that the control box 71 is equipped with a display screen 711 for displaying the number of times the impact hammer 41 approaches the proximity sensor 72, and is installed in an easily observable position within the impact device. When the impact hammer 41 approaches the proximity sensor 72, the proximity sensor 72 outputs a pulse switching signal, which is sent to the control box 71 for counting and displayed on the display screen 711 of the control box 71, thereby counting and displaying the number of impacts. Within a certain time, when the number of impacts displayed by the control box 71 reaches the required value, the external air supply can be cut off, causing the impact hammer 41 to stop moving.

[0046] like Figure 6 and Figure 7 As shown, in another embodiment, the difference from the above embodiment is that the counting device 7 is used to detect the number of reciprocating movements of the stage 2, the proximity sensor 72 is mounted on the base 1, and the proximity sensor 72 is within the travel range of the stage 2. Figure 6 The impact device shown has both the impact cylinder 4 and the platform 2 in the reset state. Figure 7 The impact device shown depicts the displacement of the platform 2 after being impacted. When the platform 2 approaches the proximity sensor 72, the proximity sensor 72 outputs a pulse switch signal. This pulse switch signal is sent to the control box 71 for counting, and the result is displayed on the display screen 711 of the control box 71 to count and display the number of impacts. Within a certain time, when the number of impacts displayed on the control box 71 reaches the required number, the external air supply is cut off, causing the impact hammer 41 to stop moving.

[0047] like Figure 4 As shown, to facilitate the control of the start and stop of the impact cylinder 4, in this embodiment, the impact device further includes a solenoid valve 9 for controlling the start and stop of the impact cylinder 4. The fluid passage of the solenoid valve 9 is connected in series with the fluid passage of the pressure regulating valve 5. When the solenoid valve 9 is energized or subjected to the magnetic force of a magnet (e.g., by fitting a magnetic ring onto the valve stem of the solenoid valve 9), the valve body opens, allowing the fluid passage of the solenoid valve 9 to connect with the fluid passage of the pressure regulating valve 5. Compressed gas from an external air source enters the cylinder body 44 through the stroke inlet 42 or the return inlet 43, and the impact cylinder 4 begins to work. When the solenoid valve 9 is de-energized or loses the magnetic force of a magnet (e.g., by removing the magnetic ring from the valve stem of the solenoid valve 9), the valve body closes to cut off the external air source, and the impact cylinder 4 stops working. This makes the operation of starting and stopping the impact cylinder 4 quick and convenient. It should be noted that this embodiment does not limit the relative positions of the solenoid valve 9 and the pressure regulating valve 5. When the solenoid valve 9 is positioned between the external air source and the pressure regulating valve 5, the solenoid valve 9 needs to be open to allow the compressed gas to communicate with the pressure regulating valve 5 in order to know the pressure value regulated by the pressure regulating valve 5 and thus determine whether the pressure value meets the required set value. When the solenoid valve 9 is positioned after the outlet of the pressure regulating valve 5, the compressed gas is always connected to the pressure regulating valve 5 regardless of whether the solenoid valve 9 is open or not, so the pressure value regulated by the pressure regulating valve 5 can always be known. Moreover, for impact tests with impact frequency requirements, the pressure of the compressed gas needs to be adjusted before the impact cylinder 4 starts working, that is, the set value of the pressure regulating valve 5 needs to be adjusted while the compressed gas is connected to the pressure regulating valve 5. To facilitate the pressure regulating operation of the pressure regulating valve 5, preferably, the inlet of the solenoid valve 9 is connected to the outlet of the pressure regulating valve 5, so that the compressed gas from the external air source passes through the pressure regulating valve 5 and the solenoid valve 9 in sequence and then communicates with the two opposing piston surfaces of the impact hammer 41 in turn. This allows for pressure adjustment before the start of the impact cylinder 4 by closing the solenoid valve 9.

[0048] Furthermore, to achieve automatic control of the impact frequency, in this embodiment, the solenoid valve 9 is electrically connected to the control box 71. When the number of impacts by the impact cylinder 4 reaches a set value, the control box 71 controls the solenoid valve 9 to close. Thus, by simply setting the required number of impacts for the test, the solenoid valve 9 can be opened to begin the impact test. Once the set number of impacts is reached, the solenoid valve 9 automatically closes to end the impact test, thereby achieving the purpose of automatic control of the impact frequency.

[0049] like Figure 7 As shown, to ensure the timely reset of the stage 2 and guarantee the accuracy of the impact test, in this embodiment, the impact device further includes an adjusting member 8 movably connected to the fixed plate 11. The adjusting member 8 can move towards the stage 2. For example, the adjusting member 8 is threadedly connected to the fixed plate 11, and the side of the adjusting member 8 facing the buffer surface 2b is connected to one end of the reset member 3. The other end of the reset member 3 is connected to the buffer surface 2b. The reset member 3 can be a spring or a spring sheet. When the elasticity of the reset member 3 decays, the stage 2 may fail to reset in time or return to the set position, thus affecting the impact cycle and impact effect of the impact hammer 41. In this case, the distance between the impact surface 2a of the stage 2 and the impact hammer 41 needs to be adjusted using the adjusting member 8. That is, rotating the adjusting member 8 pushes the reset member 3 and the stage 2 together to move a certain distance towards the impact hammer 41, thereby eliminating the adverse effects caused by the decay of the elasticity of the reset member 3.

[0050] like Figure 8 As shown, in another embodiment, the difference from the above embodiment is that the adjusting member 8 is movably connected to the platform 2, and the adjusting member 8 can move towards the fixed plate 11. For example, the adjusting member 8 is threadedly connected to the platform 2, and the side of the adjusting member 8 facing the fixed plate 11 is connected to one end of the reset member 3, while the other end of the reset member 3 is connected to the fixed plate 11. Rotating the adjusting member 8 pushes the platform 2 to move a certain distance towards the punch 41 to eliminate the adverse effects caused by the elasticity attenuation of the reset member 3.

[0051] like Figure 9As shown, to make the impact device structure more compact, in this embodiment, the base 1 includes a bracket 12 and a working plate 13. The working plate 13 has a working surface 13a and a mounting surface 13b opposite to the working surface 13a. The bracket 12, the impact cylinder 4, and the slide rail 6 are all fixed to the mounting surface 13b. The side of the stage 2 used to clamp the object to be tested 100 faces the mounting surface 13b. The working plate 13 is provided with a receiving hole 131 that penetrates the working surface 13a and the mounting surface 13b to accommodate the object to be tested 100 mounted on the stage 2. The length of the receiving hole 131 extends along the direction of the reciprocating motion of the object to be tested 100, and the length of the receiving hole 131 is greater than or equal to the stroke of the object to be tested 100 to facilitate the reciprocating motion of the object to be tested 100. When installing the impact device, the bracket 12 is placed on the ground, with the mounting surface 13b of the working plate 13 facing the ground and the working surface 13a facing upwards relative to the ground. The impact cylinder 4 and the slide rail 6 are fixed to the mounting surface 13b, which not only saves assembly space, but also allows multiple test objects 100 to be stacked on the working surface 13a. Then, each test object 100 is clamped onto the stage 2 for impact testing in sequence, which is convenient for the operation of the impact test. Other components, such as the pressure regulating valve 5, the solenoid valve 9, the gas distributor 20, and the control box 71, can also be installed on the bracket 12, making the structure of the impact device more compact.

[0052] like Figure 9 As shown, to facilitate the clamping of the object to be tested 100, the stage 2 is provided with at least one guide rail 21 for clamping the object to be tested 100. The guide rail 21 passes through the receiving hole 131 and extends out of the working surface 13a to facilitate the clamping of the object to be tested 100. The length of the receiving hole 131 is greater than or equal to the stroke of the guide rail 21 to provide space for the reciprocating movement of the guide rail 21. The guide rail 21 can be a Picatinny rail commonly used in firearms, or a dovetail rail.

[0053] A sight is an optical product with an aiming point. For a sight, it's necessary to test not only its structural strength but also whether the aiming point shifts after an impact test following calibration. However, there is an assembly gap between the stage 2 and the slide rail 6, and this gap can affect the assessment results of the impact test. Therefore, to eliminate the influence of the assembly gap, such as... Figures 1 to 4As shown, in this embodiment, any of the aforementioned impact devices further includes a clamping device 10 fixed to the base 1. The clamping device 10 has an abutting end 101 facing the platform 2. The abutting end 101 is used to connect with the platform 2 to push the platform 2 to abut at a first reference position, such as abutting against the slide rail 6 or against a limiting block provided on the base 1. Specifically, the clamping device 10 includes a piston cylinder fixed to the base 1 and having a piston rod. The abutting end 101 of the clamping device 10 is provided at the end of the piston rod. When the piston cylinder is inflated, the abutting end 101 extends and pushes the platform 2 to move in one direction until the platform 2 abuts against the slide rail 6 to prevent the platform 2 from moving. When the piston cylinder is deflated, the abutting end 101 retracts and disengages from the platform 2, allowing the platform 2 to be slidably connected to the slide rail 6. It should be noted that the aforementioned first reference position refers to the position where the platform 2 stops moving, and the platform 2 can be repeatedly stopped at this position. For example, when the clamping device 10 pushes the platform 2 to a stop on the left side of the slide rail 6, the position where the platform 2 stops is the first reference position. In addition, the clamping device 10 can also push the platform 2 to a stop on the right, upper, or lower side of the slide rail 6, and the clamping device 10 can also push the platform 2 to a stop on the top surface of the base 1.

[0054] Therefore, compared with the prior art, the above-mentioned impact device can push the stage to the first reference position through the clamping device, thereby fixing the stage to the first reference position before and after the impact test. That is, fixing the sight under test in the same reference position to judge the result of the impact test, eliminating external factors that may cause the aiming point of the sight under test to shift relative to the scale point of the calibrator, thus more accurately judging whether the aiming point of the sight under test will shift after the impact test, thereby improving the evaluation accuracy of the impact test.

[0055] like Figure 12 As shown, one embodiment of the present invention also provides an impact method for a sight impact test, comprising the following steps:

[0056] S1. Prepare the sight to be tested 100, the calibrator 200 and any of the impact devices with the clamping device 10, fix the calibrator 200 to the base 1, and clamp the sight to be tested 100 to the stage 2.

[0057] S2. The stage 2 is pushed to the first reference position by the clamping device 10, and then the aiming point of the sight 100 under test is adjusted by the adjustment device of the sight 100 under test so that the aiming point coincides with any scale point of the calibrator 200.

[0058] S3. Disconnect the clamping device 10 from the platform 2 so that the platform 2 returns to a state in which it can be slidably connected to the base 1;

[0059] S4. Initiate the impact test, causing the impact hammer 41 to impact the platform 2;

[0060] S5. After the impact test is completed, the impact hammer 41 stops impacting the platform 2, and the platform 2 is stopped at the first reference position again by the clamping device 10. Then observe whether the aiming point still coincides with the scale point.

[0061] After the impact test, if the aiming point still coincides with the scale point, or if the aiming point and the scale point do not coincide but the relative displacement is within the allowable range, it can be determined that the aiming point of the sight under test 100 will not produce a displacement exceeding the allowable range after the impact; if the aiming point and the scale point do not coincide and the relative displacement exceeds the allowable range, it can be determined that the aiming point of the sight under test 100 will produce a displacement exceeding the allowable range after the impact.

[0062] It is understandable that since the sight 100 under test is clamped on the stage 2, when the stage 2 is stopped at the first reference position, the sight 100 under test is in a certain reference position. This ensures that the sight 100 under test is in the same reference position before and after the impact test.

[0063] like Figure 10 and Figure 11 As shown, in this embodiment, the calibrator 200 can be a collimator, and the clamping device 10 can be a piston cylinder fixed to the base 1 and having a contact end 101. The contact end 101 can extend and retract. When the contact end 101 extends, it can push the stage 2 to move in one direction until the stage 2 stops against the slide rail 6 or the limiting block to prevent the stage 2 from moving, thereby determining that the stage 2 is in the first reference position, and then determining that the sight 100 clamped on the stage 2 is in a certain reference position. When the contact end 101 retracts, it can disengage from the stage 2, so that the stage 2 can be slidably connected to the slide rail 6 for subsequent impact testing.

[0064] Compared with existing technologies, the impact test method of this sight uses a platform fixed at the first reference position before and after the impact test, that is, fixing the sight under test at the same reference position to judge the impact test results. This eliminates external factors that may cause the aiming point of the sight under test to shift relative to the scale point of the calibrator, thereby more accurately judging whether the aiming point of the sight under test will shift after the impact test, and thus improving the evaluation accuracy of the impact test.

[0065] Preferably, the scale point is the center point of the calibrator 200.

[0066] In another embodiment, the clamping device 10 includes a clamping screw, which can be rotated to push the stage 2 in one direction until it stops against the slide rail 6 or the limiting block to prevent the stage 2 from moving, thereby determining that the stage 2 is in a first reference position, and further determining that the sight 100 clamped on the stage 2 is in a certain reference position.

[0067] In other embodiments, the difference from the above embodiments lies in that the impact cylinder 4 and pressure regulating valve 5 of the impact device are replaced by the impact hammer, motor, and transmission device disclosed in the utility model patent with patent number ZL201821830987.X, entitled "A Gun Sight Impact Resistance Test Stand". The impact hammer is slidably connected to the base, and the transmission device is disposed between the impact hammer and the motor and is used to convert the rotational output of the motor into the linear motion of the impact hammer. After the motor starts, the transmission device drives the impact hammer to reciprocate along the length direction of the impact hammer and impact the platform. Paragraphs 0022 to 0027 of the specification of the utility model patent with patent number ZL201821830987.X, entitled "A Gun Sight Impact Resistance Test Stand", and the corresponding drawings are incorporated herein by reference in their entirety as part of the content of this embodiment to describe the structure of the transmission device. It is understood that the impact device also has a clamping device fixedly connected to the base, which can push the platform to abut against the first reference position.

[0068] In this embodiment, a collimator and the aforementioned impact device can be used to conduct an impact test. The impact test method includes the following steps:

[0069] S21. Fix the collimator and the gun sight to be tested to the base and the stage respectively;

[0070] S22. The stage is stopped against the slide rail by the clamping device, and then the aiming point of the gun sight to be tested is adjusted so that the aiming point coincides with the center point of the collimator.

[0071] S23. Return the stage to its sliding connection with the base;

[0072] S24. Start the motor and begin the impact test, causing the impact hammer to impact the platform.

[0073] S25. After the impact test is completed, stop the motor and stop the impact hammer from impacting the stage. Then, stop the stage against the slide rail again and observe whether the aiming point still coincides with the center point of the collimator.

[0074] The above description is merely a preferred embodiment of the present invention, but the present invention is not limited to the above embodiments. Any embodiment that achieves the technical effect of the present invention by any same or similar means should fall within the protection scope of the present invention.

Claims

1. An impact device for a sight impact test, comprising a base (1), a stage (2) slidably connected to the base (1), a reset member (3) connected between the base (1) and the stage (2) to reset the stage (2) after being impacted, and a hammer (41) slidably connected to the base (1) for impacting the stage (2), wherein the movement direction of the hammer (41) is consistent with the movement direction of the stage (2), characterized in that: The impact device further includes a clamping device (10) fixedly connected to the base (1). The clamping device (10) has an abutting end (101) facing the platform (2). The abutting end (101) is used to connect with the platform (2) to push the platform (2) to abut at a first reference position. The impact device also includes an impact cylinder (4) fixedly connected to the base (1) and a pressure regulating valve (5) connected to an external air source. The impact cylinder (4) has a stroke air inlet (42) and a return air inlet (43). The impact hammer (41) is slidably disposed at the stroke air inlet (42). Between the stroke air inlet (42) and the return air inlet (43), the stroke air inlet (42) and the return air inlet (43) are connected to an external air source through the pressure regulating valve (5) in turn to drive the hammer (41) to reciprocate along the length of the impact cylinder (4) and impact the platform (2). The impact device also includes a slide rail (6) fixedly connected to the base (1). The slide rail (6) includes two parallel straight rods (61). The length of the straight rods (61) extends along the movement direction of the hammer (41). The platform (2) is slidably connected to the straight rods (61).

2. The impact device for a sight impact test according to claim 1, characterized in that: The impact device also includes a counting device (7) for selectively detecting the number of reciprocating motions of the impact hammer (41) or the platform (2). The counting device (7) includes a control box (71) and a proximity sensor (72) electrically connected to the control box (71). The control box (71) is used to receive the signal output by the proximity sensor (72). The proximity sensor (72) is selectively placed within the stroke range of the impact hammer (41) or the platform (2).

3. The impact device for a sight impact test according to claim 1, characterized in that: The base (1) is provided with a fixed plate (11) facing the platform (2). The impact device also includes an adjusting member (8) movably connected to the fixed plate (11) and the adjusting member (8) can move toward the platform (2). The reset member (3) has two connecting ends, which are respectively connected to the adjusting member (8) and the platform (2).

4. The impact device for a sight impact test according to claim 1, characterized in that: The base (1) is provided with a fixed plate (11) facing the platform (2). The impact device also includes an adjusting member (8) movably connected to the platform (2) and the adjusting member (8) can move toward the fixed plate (11). The reset member (3) has two connecting ends, which are respectively connected to the adjusting member (8) and the platform (2).

5. The impact device for a sight impact test according to claim 1, characterized in that: The impact device also includes a solenoid valve (9) for controlling the start and stop of the impact cylinder (4), and the fluid passage of the solenoid valve (9) is connected in series with the fluid passage of the pressure regulating valve (5).

6. The impact device for a sight impact test according to claim 5, characterized in that: The inlet of the solenoid valve (9) is connected to the outlet of the pressure regulating valve (5), so that the compressed gas from the external gas source passes through the pressure regulating valve (5) and the solenoid valve (9) in sequence and then enters the stroke inlet (42) and the return inlet (43) in turn.

7. An impact test method for sights, characterized in that: Includes the following steps: S1. Prepare the sight to be tested (100), the calibrator (200), and the impact device as described in any one of claims 1 to 6. Fix the calibrator (200) to the base (1), and clamp the sight to be tested (100) onto the stage (2). S2. The stage (2) is pushed to the first reference position by the clamping device (10), and then the aiming point of the sight to be tested (100) is made to coincide with any scale point of the calibrator (200); S3. Return the stage (2) to its sliding connection with the base (1); S4. The hammer (41) impacts the platform (2); S5. Stop the impact of the hammer (41) on the platform (2), and stop the platform (2) at the first reference position again. Then observe whether the aiming point still coincides with the scale point.

8. The impact method for a sight impact test according to claim 7, characterized in that: The scale point is the center point of the calibrator (200).

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