A device and method for calibrating the rear sight of a pistol

Abstract

This invention discloses a device and method for calibrating the rear sight of a pistol, enabling theoretical calibration when the pistol is not firing and personalized calibration during live-fire testing. It includes an adjusting seat, a limiting block, and a movable block. The recessed portion of the adjusting seat engages with the two side walls of the bolt for limiting its position. A boss is provided on the outer surface of one side wall of the adjusting seat, with a circular hole and a threaded hole inside the boss. A pusher head slides within the circular hole, and an adjusting rod engages within the threaded hole. The adjusting rod actuates the pusher head, which in turn adjusts the lateral position of the rear sight on the bolt. The limiting block has a cylindrical positioning rod at its front end, which is inserted into the firing pin hole at the rear end of the bolt for limiting its position. The limiting block has two side walls for engaging with the vertical groove at the rear end of the bolt for limiting its position. The limiting block has engraved lines. The rear end of the movable block is hinged to the upper end of the limiting block. The front end of the movable block has a square boss for engaging with the rear sight notch on the rear sight for positioning. An arrow mark is provided in the center of the rear end face of the movable block.

Description

Technical Field

[0001] This invention relates to the field of firearms technology, and in particular to a device and method for calibrating the rear sight of a pistol. Background Technology

[0002] Currently, pistol calibration involves visually determining the center and manually adjusting left and right based on the deviation between the bullet impact point and the aiming point after live-fire shooting, according to experience and a reference gate. This existing calibration method is inefficient, has a significant impact on calibration results due to personal habits, and requires a professional setting. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a device and method for calibrating the rear sight of a pistol, which can achieve theoretical calibration when the pistol is not firing and personalized calibration when combined with live-fire shooting.

[0004] The objective of this invention is achieved as follows:

[0005] An apparatus for calibrating the rear sight of a pistol, comprising:

[0006] The adjusting seat is U-shaped, and the concave part of the adjusting seat is a limiting groove. The facing surfaces of the two side walls of the limiting groove are used to cooperate with the two side walls of the bolt for limiting. A boss is provided on the outer surface of one side wall of the adjusting seat. A round hole and a threaded hole are arranged sequentially along the axial direction in the boss. A push head is slidably fitted in the round hole, and an adjusting rod is fitted in the threaded hole. The adjusting rod is used to push the push head, and the push head is used to push and adjust the lateral position of the rear sight on the bolt.

[0007] The limiting block has a cylindrical positioning rod at its front end, which is used to limit the insertion of the firing pin hole at the rear end of the bolt. The limiting block has two parallel sidewalls, which are used to cooperate with the vertical groove at the rear end of the bolt for limiting. The upper end of the limiting block has a horizontal engraving line.

[0008] The movable block has its rear end hinged to the upper end of the limiting block via a cylindrical pin. The movable block has space for lateral movement on the cylindrical pin. The front end of the movable block is provided with a square boss, which is used to engage with the notch on the sight for positioning. The rear end face of the movable block is provided with an arrow mark, which is used to cooperate with the engraving on the limiting block to quantitatively adjust the lateral position of the movable block.

[0009] Preferably, the rod body of the adjusting rod is a screw, and the tail end of the adjusting rod is provided with a handle.

[0010] Preferably, a dovetail groove is provided on the upper rear end of the bolt, and dovetail bevels are provided on the front and rear surfaces of the rear sight, with the rear bevels of the rear sight and the dovetail groove on the bolt being interference fit.

[0011] Preferably, the sight has a longitudinal notch in the middle, and the left and right sides of the sight are adjustment contact surfaces for contacting the top head.

[0012] Preferably, the end of the top head corresponding to the sight is provided with a center point, which is used to reduce the contact area and increase the adjustment accuracy. The end of the top head corresponding to the adjustment rod is provided with a limiting head, which is used to limit the maximum ejection distance of the top head.

[0013] Preferably, the upper end of the limiting block is provided with a relief groove, and the two sides of the relief groove are support ears, each of which is provided with a limiting block mounting hole. The engraving line is located below the relief groove. The rear end of the movable block is located in the relief groove, and the rear end of the movable block is provided with a movable block mounting hole along the lateral direction. The limiting block mounting hole and the movable block mounting hole are used to cooperate with the cylindrical pin.

[0014] Preferably, the engraving has a zero position corresponding to the center line of the bolt carrier, and graduations are provided on both the left and right sides of the zero position.

[0015] A method for using a device for calibrating the rear sight of a pistol, the method comprising the following steps:

[0016] S1. Take the adjusting seat, movable block, limit block, cylindrical pin, bolt, and rear sight, and install the rear sight on the bolt.

[0017] S2. Assemble the movable block, the limiting block, and the cylindrical pin into a whole. Insert the cylindrical positioning rod of the limiting block into the firing pin hole on the bolt and push the limiting block forward until it can no longer be pushed.

[0018] S3, Calibrate the rearview camera

[0019] Move the movable block left and right until the square protrusion of the movable block is aligned with the notch on the sight, and then insert the square protrusion into the notch.

[0020] Read the position of the arrow mark on the movable block aligned with the scale line on the limit block; place the side of the rear sight that needs to be adjusted on the same side as the top head; rotate the adjusting rod to move the top head and adjust the lateral position of the rear sight on the bolt until the arrow mark on the movable block is aligned with the zero position of the scale line.

[0021] Preferably, it also includes step S4, personalized calibration of the sight:

[0022] By calculating and / or statistically analyzing live-fire data, a data table showing the corresponding relationship between bullet impact point offset and rear sight calibration adjustment at various firing distances is established.

[0023] The user uses the pistol and, according to personal habits, uses the rear sight notch in conjunction with the front sight to aim at a fixed point and fire. The distance between the firing position and the aiming point is the firing distance Z. After firing, the bullet impact point offset X is checked. By referring to the data table, the corresponding rear sight calibration adjustment amount W is obtained when the firing distance is Z and the bullet impact point offset is X. Then, the bolt is removed from the finished pistol, and the rear sight is calibrated according to the rear sight calibration adjustment amount W.

[0024] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0025] This invention helps users achieve theoretical calibration of the rear sight without firing. When performing personalized calibration using live-fire shooting, the adjustment amount and direction of the rear sight can be determined with just one shot, based on the user's shooting habits. Attached Figure Description

[0026] Figure 1 It is a three-dimensional schematic diagram of the adjustment mechanism;

[0027] Figure 2 This is a schematic diagram of the adjustment seat;

[0028] Figure 3 This is a three-dimensional schematic diagram of the rearview camera.

[0029] Figure 4 This is a 3D schematic diagram of the active block;

[0030] Figure 5 This is a three-dimensional schematic diagram of the limit seat block;

[0031] Figure 6 It is a three-dimensional schematic diagram of the bolt action;

[0032] Figure 7 This is a three-dimensional schematic diagram of the top.

[0033] Figure 8 This is a three-dimensional schematic diagram of the adjusting lever. Detailed Implementation

[0034] The invention will be further described below with reference to the accompanying drawings, in which: 1-adjusting seat, 2-rear sight, 3-moving block, 4-limiting block, 5-bolt, 6-top head, 7-adjusting rod, 8-cylindrical pin, 101-limiting groove, 102-bore, 103-round hole, 104-threaded hole, 201-dovetail bevel, 202-rear sight notch, 203-adjusting contact surface, 301-arrow, 302-moving block mounting hole, 303-square boss, 401-cylindrical positioning rod, 402-limiting block mounting hole, 403-gap groove, 404-marking line, 501-firing pin hole, 502-front sight, 503-dovetail groove, 601-top, 602-limiting head, 701-screw, 702-handle.

[0035] A method for calibrating the rear sight of a pistol, the method comprising the following steps:

[0036] S1. Prepare tools

[0037] Take adjustment seat 1, movable block 3, limit block 4, cylindrical pin 8, bolt 5, and rear sight 2.

[0038] The adjusting seat 1 has a U-shaped structure with a mounting limiting groove 101 in the middle and a boss 102 on one side for mounting a top head 6 and an adjusting rod 7. The boss 102 has a coaxial circular hole 103 and a threaded hole 104 inside. The top head 6 is installed in the circular hole 103, and the adjusting rod 7 is assembled in the threaded hole 104. The adjusting rod 7 has a handle 702 at its end for easy gripping.

[0039] The limiting block 4 has a cylindrical positioning rod 401 at its front end and a etched line 404 at its upper end. A cylindrical pin 8 is used to connect the limiting block 4 to the limiting block 4 through the movable block mounting hole 302 of the movable block 3. The movable block 3 has an arrow mark 301 at its lower end and a square boss 303 at its top end.

[0040] The bolt 5 has a front sight 502 at the front and a firing pin hole 501 and a dovetail groove 503 at the rear.

[0041] The rear sight 2 is installed on the bolt 5 via an interference fit between the dovetail bevel 201 and the dovetail groove 503 on the bolt 5. The rear sight has a notch 202 in the middle and adjustment contact surfaces 203 on the left and right sides.

[0042] The firing pin hole on the bolt is concentric with the barrel. The firing pin hole on the bolt is coaxial with the front sight in the muzzle direction. The length and diameter of the cylindrical positioning rod are the same as the size of the firing pin hole, with a transition fit.

[0043] S2, Installation and Measurement Department

[0044] Install the movable block 3, the limiting block 4, and the cylindrical pin 8 into a whole. Insert the cylindrical positioning rod 401 of the limiting block 4 into the firing pin hole 501 on the bolt 5, and push the limiting block 4 inward until it can no longer be pushed.

[0045] S3, Calibrate the rearview camera

[0046] Move the movable block 3 left and right until the square protrusion 303 of the movable block 3 aligns with the notch 202 on the sight 2. Read the position of the aligning arrow mark 301 on the movable block 3 with the graduated line 404 on the limiting block 4. Place the adjusting contact surface 203 of the sight 2 on the same side as the top head 6. Rotate the handle 702 of the adjusting rod 7 to push the top head 6 to move the sight 2 within the dovetail groove 503 until the arrow mark 301 on the movable block 3 aligns with the center zero position of the graduated line 404.

[0047] Finally, remove the bolt 5 from the adjusting seat 1, and remove the measuring (moving block 3, limiting block 4, and cylindrical pin 8 as a whole) from the bolt 5 to complete the theoretical calibration of the rear sight 2.

[0048] S4, Personalized Lens Calibration

[0049] Theoretically, the firing pin hole of a pistol is concentric with the barrel, meaning the firing pin hole is concentric with the bullet when it leaves the barrel. Therefore, the firing pin hole is used for positioning, and theoretical calibration of the rear sight can be performed by measuring the offset of the rear sight relative to the firing pin hole. Through theoretical calculations and statistical analysis of a large amount of live-fire data, a data table has been established showing the correspondence between the rear sight calibration adjustment amount and the bullet impact point offset at a certain distance. The required adjustment amount for rear sight calibration can be obtained through live-fire measurements and table lookup. Personalized rear sight calibration can be achieved using the tools and methods of this invention.

[0050] For example, a user uses the rear sight notch 202 and the front sight 502 to aim at a fixed aiming point at a distance of 20m and fires. After firing, the average deviation between the bullet impact point and the aiming point is checked and found to be -10cm. By referring to the table, it is found that the rear sight 2 should be adjusted by -0.24mm. The rear sight can be adjusted by -0.24mm according to method S3.

[0051] Specifically:

[0052] This method establishes a data table showing the correspondence between the adjustment amount of the rear sight 2 and the offset distance of the bullet impact point at a certain distance through theoretical calculations and statistical analysis of a large amount of live-fire data.

[0053] Camera calibration adjustment amount ( mm )

[0054]

[0055] The user uses the pistol and, according to personal preference, aims at a fixed point using the rear sight notch 202 and front sight 502. The distance between the shooting position (the user's standing position) and the aiming point (ideal bullet impact point) is Z (distance between the user's standing position and the ideal bullet impact point). After shooting, the bullet impact point offset is checked as X (distance between the aiming point and the average bullet impact point). By referring to a table, when the shooting distance is Z and the bullet impact point offset is X, the corresponding rear sight 2 calibration adjustment is W (the relationship between the rear sight 2 calibration adjustment for other distances and offsets can be obtained from the table). The bolt 5 is removed from the pistol, and the rear sight movement W is adjusted according to the theoretical calibration method to complete the personalized calibration. (For example, if the user uses the rear sight notch 202 and front sight 502 to aim at a fixed aiming point at a distance of 20m, and after shooting, the offset between the average bullet impact point and the aiming point is checked as -10cm, by referring to the table, the rear sight 2 should be adjusted by -0.24mm. The rear sight adjustment of -0.24mm can be performed according to method S3).

[0056] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A method of using a device for calibrating the rear sight of a pistol, characterized in that: The device for calibrating the rear sight of a pistol includes: The adjusting seat is U-shaped, and the concave part of the adjusting seat is a limiting groove. The facing surfaces of the two side walls of the limiting groove are used to cooperate with the two side walls of the bolt for limiting. A boss is provided on the outer surface of one side wall of the adjusting seat. A round hole and a threaded hole are arranged sequentially along the axial direction in the boss. A push head is slidably fitted in the round hole, and an adjusting rod is fitted in the threaded hole. The adjusting rod is used to push the push head, and the push head is used to push and adjust the lateral position of the rear sight on the bolt. The limiting block has a cylindrical positioning rod at its front end, which is used to limit the insertion of the firing pin hole at the rear end of the bolt. The limiting block has two parallel sidewalls, which are used to cooperate with the vertical groove at the rear end of the bolt for limiting. The upper end of the limiting block has a horizontal engraving line. The movable block has its rear end hinged to the upper end of the limiting block via a cylindrical pin. The movable block has space for lateral movement on the cylindrical pin. The front end of the movable block is provided with a square boss, which is used to engage with the notch on the sight for positioning. The rear end face of the movable block is provided with an arrow mark, which is used to cooperate with the engraving on the limiting block to quantitatively adjust the lateral position of the movable block. This method includes the following steps: S1. Take the adjusting seat, movable block, limit block, cylindrical pin, bolt, and rear sight, and install the rear sight on the bolt. S2. Assemble the movable block, the limiting block, and the cylindrical pin into a whole. Insert the cylindrical positioning rod of the limiting block into the firing pin hole on the bolt and push the limiting block forward until it can no longer be pushed. S3, Calibrate the rearview camera Move the movable block left and right until the square protrusion of the movable block is aligned with the notch on the sight, and then insert the square protrusion into the notch. Read the scale position of the limit block aligned with the arrow mark on the movable block; place the side of the rear sight that needs to be adjusted on the same side as the top head; rotate the adjusting rod to move the top head and adjust the lateral position of the rear sight on the bolt until the arrow mark on the movable block aligns with the zero position of the scale line.

2. The method of using the device for calibrating the gate of a handgun of claim 1, wherein: The body of the adjusting rod is a screw, and a handle is provided at the end of the adjusting rod.

3. The method of using the device for calibrating the gate of a handgun of claim 1, wherein: The bolt has a dovetail groove on its upper rear end, and the rear and rear surfaces of the sight have corresponding dovetail bevels. The dovetail bevels of the sight are interference-fitted with the dovetail groove on the bolt.

4. The method of using the device for calibrating the rear sight of a pistol according to claim 1, characterized in that: The sight has a longitudinal notch in the middle, and the left and right sides of the sight are adjustment contact surfaces for contacting the top head.

5. The method of using the device for calibrating the rear sight of a pistol according to claim 1, characterized in that: The top end of the top head, corresponding to the sight, is provided with a center point, which is used to reduce the contact area and increase the adjustment accuracy. The top end of the top head, corresponding to the adjustment rod, is provided with a limiting head, which is used to limit the maximum ejection distance of the top head.

6. The method of using the device for calibrating the rear sight of a pistol according to claim 1, characterized in that: The upper end of the limiting block is provided with a relief groove, and the two sides of the relief groove are support ears. Each support ear is provided with a limiting block mounting hole. The engraving line is located below the relief groove. The rear end of the movable block is located in the relief groove. The rear end of the movable block is provided with a movable block mounting hole along the lateral direction. The limiting block mounting hole and the movable block mounting hole are used to cooperate with the cylindrical pin.

7. The method of using the device for calibrating the rear sight of a pistol according to claim 1, characterized in that: The engraving has a zero position corresponding to the center line of the bolt carrier, and there are scales on both the left and right sides of the zero position.

8. The method of using the device for calibrating the rear sight of a pistol according to claim 1, characterized in that, It also includes step S4, personalized calibration of the sight: By calculating and / or statistically analyzing live-fire data, a data table showing the corresponding relationship between bullet impact point offset and rear sight calibration adjustment at various firing distances is established. The user uses the pistol and, according to personal habits, uses the rear sight notch in conjunction with the front sight to aim at a fixed point and fire. The distance between the firing position and the aiming point is the firing distance Z. After firing, the bullet impact point offset X is checked. By referring to the data table, the corresponding rear sight calibration adjustment amount W is obtained when the firing distance is Z and the bullet impact point offset is X. Then, the bolt is removed from the finished pistol, and the rear sight is calibrated according to the rear sight calibration adjustment amount W.

Images