A laser gyroscope cavity hole shape position trimming tool and trimming method

By designing a tooling fixture for adjusting the shape and position of the cavity holes in a laser gyroscope, and using the combination of the driving gear and the driven gear with the microscope scale lines, the problem of difficult adjustment of the shape and position tolerances of the cavity holes was solved, achieving precise adjustment results and ease of operation.

CN119036110BActive Publication Date: 2026-07-10TIANJIN JINHANG INST OF TECH PHYSICS

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TIANJIN JINHANG INST OF TECH PHYSICS
Filing Date
2024-10-08
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

After the laser gyroscope cavity is machined, the shape and position tolerances of the cavity holes, especially the parallelism of the aperture and capillary holes relative to the base surface, are difficult to adjust accurately, leading to operator fatigue and poor finishing effect.

Method used

A laser gyroscope cavity hole shape and position trimming fixture was designed, including a mounting base and an adjustment component. By using the drive gear and driven gear in conjunction with the microscope's scale lines, the aperture and capillary hole can be precisely aligned and locked, avoiding hand-held fixation.

Benefits of technology

This improved the stability and precision of the finishing process, reduced operator fatigue, and ensured accurate adjustment of the cavity hole shape and position.

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Abstract

This application provides a fixture and method for adjusting the shape and position of the internal cavity of a laser gyroscope cavity. The fixture includes: a mounting base with a first mounting hole and a second mounting hole, detachably connected to the light-transmitting base of a microscope; and an adjustment assembly mounted on the mounting base, comprising: a drive gear, which is positioned corresponding to the first mounting hole and rotatable relative to the mounting base, and is lockable to the mounting base; and a driven gear, which is positioned corresponding to the second mounting hole and rotatable relative to the mounting base, meshing with the drive gear for transmission. A clamping station for fixing the laser gyroscope cavity is provided on the side of the driven gear away from the mounting base. The fixture provided in this application facilitates the adjustment and fixing of the laser gyroscope cavity position, improving the accuracy and efficiency of the adjustment.
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Description

Technical Field

[0001] This disclosure generally relates to the field of optical device processing technology, and specifically to a tooling and method for trimming the shape and position of the cavity hole in a laser gyroscope. Background Technology

[0002] After the machining process of the laser gyroscope cavity, an important indicator that needs to be inspected is the form and position tolerance of the cavity holes, and the parallelism of the aperture 25 and the capillary holes 26 on both sides relative to the base surface A. Figure 1 As shown. The measurement method for this index is as follows: first, use a universal tool microscope to collect data on the aperture and the adjacent capillaries on both sides, then fit the axis of the aperture and the capillaries on both sides, and calculate the parallelism of the axis relative to the base plane.

[0003] Because this indicator involves the coaxiality of the three inner holes, during machining, there may be a situation where the spindle rotates 180° in the opposite direction for milling. This can easily cause excessive deviation of the axes of the three inner holes. In this case, the parallelism of the aperture and the capillaries on both sides relative to the base surface A is poor. To address this, the position of the aperture or capillaries needs to be adjusted. However, in actual manual adjustment, there is a lack of a locking mechanism. The operator needs to use one hand to press down while using the other hand to repeatedly rub and enlarge the aperture or capillaries with a trained tool. Simultaneously, the operator needs to use their eyes, along with the eyepiece of an observation microscope, to ensure the direction and amount of enlargement. This operation is inconvenient for adjusting the laser gyroscope cavity and requires hand-held fixation, causing operator fatigue and making it impossible to accurately monitor the amount of enlargement, resulting in poor tool adjustment performance. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a laser gyroscope cavity hole shape and position trimming tool and trimming method to solve the above problems.

[0005] The first aspect of this application provides a laser gyroscope cavity aperture shaping and positioning fixture for use with a microscope for observation. The microscope's display screen has mutually perpendicular horizontal and vertical graduation lines, including:

[0006] The mounting base has a first mounting hole and a second mounting hole, and the mounting base is detachably connected to the light-transmitting base of the microscope.

[0007] An adjustment assembly, mounted on the mounting base, includes:

[0008] A drive gear is provided corresponding to the first mounting hole and is rotatable relative to the mounting base; the drive gear and the mounting base can be locked together.

[0009] The driven gear is provided corresponding to the second mounting hole and can rotate relative to the mounting base. The driven gear is meshed and connected to the driving gear. A clamping station for fixing the laser gyroscope cavity is provided on the side of the driven gear away from the mounting base.

[0010] According to the technical solution provided in the embodiments of this application, the driving gear is mounted on the first mounting hole via a positioning component, the positioning component comprising:

[0011] A locking bolt and a locking nut are provided, wherein the locking bolt passes through the drive gear and the mounting base, and cooperates with the locking nut to install the drive gear on the mounting base; the nut of the locking bolt and the locking nut are respectively provided on both sides of the mounting base;

[0012] The self-rotating bearing is coaxially disposed on the inner circumference of the driving gear and sleeved on the locking bolt.

[0013] According to the technical solution provided in the embodiments of this application, the positioning component further includes an upper washer and a lower washer, the upper washer and the lower washer being sleeved on the locking bolt, the upper washer being disposed between the nut of the locking bolt and the self-rotating bearing, and the lower washer being disposed between the self-rotating bearing and the mounting base.

[0014] According to the technical solution provided in the embodiments of this application, the positioning component further includes a locking member, which passes through the drive gear and is threadedly connected to the drive gear. The locking member has an abutment portion at one end near the mounting base, and a rotating handle is rotatably mounted on the other end of the locking member away from the mounting base.

[0015] According to the technical solution provided in the embodiments of this application, the driven gear is provided with a plurality of positioning bosses on the side away from the mounting base, the plurality of positioning bosses are arranged around the axis of the driven gear, and the clamping station is formed between the plurality of positioning bosses; a rotating frame is formed on the side of the driven gear close to the mounting base, the rotating frame is annular and embedded in the second mounting hole, so that the driven gear rotates relative to the mounting base.

[0016] According to the technical solution provided in the embodiments of this application, a light-transmitting area is formed on the inner circumference of the rotating frame, and the light-transmitting area extends through the driven gear to the side of the driven gear away from the mounting base.

[0017] According to the technical solution provided in the embodiments of this application, the first mounting hole has a strip-shaped cross-section and extends along the radial direction of the second mounting hole.

[0018] According to the technical solution provided in the embodiments of this application, the mounting base is provided with mounting holes, and the mounting holes are used in conjunction with mounting screws to connect the mounting base and the through mounting base.

[0019] A second aspect of this application provides a method for shaping and positioning the inner hole of a laser gyroscope cavity, based on the aforementioned fixture for shaping and positioning the inner hole of a laser gyroscope cavity. The method includes:

[0020] The laser gyroscope cavity is installed on the clamping station, and the mounting base is installed on the light-transmitting base;

[0021] Rotate the drive gear, which in turn drives the driven gear to rotate, while observing the display screen;

[0022] When the aperture wall of the laser gyroscope cavity coincides with the horizontal scale line, lock the drive gear;

[0023] The capillary holes at both ends of the aperture are enlarged by friction using a trimming tool. The position of the capillary hole wall and the longitudinal scale line on the display screen are observed in real time until the capillary hole wall reaches the target scale.

[0024] Compared with the prior art, the beneficial effects of this application are as follows: By setting a mounting base with a first mounting hole and a second mounting hole, the first and second mounting holes can be used to install an adjustment component. The adjustment component includes a driving wheel and a driven wheel. The driven wheel is provided with a clamping station for fixing the laser gyroscope cavity. During adjustment, the laser gyroscope cavity is installed in the clamping station. By rotating the driving gear, the driven gear is driven to rotate, thereby facilitating the adjustment of the direction of the laser gyroscope cavity so that the axes of the aperture and the capillary are as close as possible to the horizontal scale line. Furthermore, the driving gear can be locked after adjustment, eliminating the need for operator hand-holding. Since the mounting base and the light-transmitting base of the microscope are detachably connected, the mounting base and the light-transmitting base can be installed during adjustment to improve stability. The adjustment fixture provided by this application facilitates the adjustment of the angle of the laser gyroscope cavity, and after adjustment, the operator does not need to hold it, avoiding operator hand and eye fatigue, and facilitating accurate monitoring of the hole enlargement amount, thus achieving a better adjustment effect. Attached Figure Description

[0025] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0026] Figure 1 This is a schematic diagram of the structure of a laser gyroscope cavity;

[0027] Figure 2 This is a schematic diagram of the aperture and capillary on the display screen.

[0028] Figure 3 A schematic diagram of the structure of the laser gyroscope cavity internal hole shape and position trimming tooling provided in this application;

[0029] Figure 4 This is a schematic diagram of the mounting base.

[0030] Figure 5 A top view showing the engagement of the drive gear and the positioning assembly;

[0031] Figure 6 This is a top view of the driven gear.

[0032] Figure 7 A side sectional view showing the engagement of the drive gear and the positioning assembly;

[0033] Figure 8 This is a schematic diagram of the installation of the mounting base and the light-transmitting base.

[0034] Reference numerals: 1. Display screen; 2. Horizontal scale line; 3. Vertical scale line; 4. Light-transmitting base; 5. Mounting base; 6. First mounting hole; 7. Second mounting hole; 8. Driving gear; 9. Driven gear; 10. Laser gyroscope cavity; 11. Clamping station; 12. Locking bolt; 13. Locking nut; 14. Rotating bearing; 15. Upper washer; 16. Lower washer; 17. Locking element; 18. Abutment part; 19. Rotating handle; 20. Positioning boss; 21. Rotating frame; 22. Light transmission area; 23. Mounting hole; 24. Mounting screw; 25. Aperture; 26. Capillary hole; 27. Light source. Detailed Implementation

[0035] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0037] Example 1

[0038] Please refer to Figure 3 This embodiment provides a fixture for adjusting the shape and position of the cavity hole in a laser gyroscope, used in conjunction with a microscope for observation. The microscope's display screen 1 has mutually perpendicular horizontal scale lines 2 and vertical scale lines 3, including:

[0039] Mounting base 5, which has a first mounting hole 6 and a second mounting hole 7, and is detachably connected to the light-transmitting base 4 of the microscope;

[0040] An adjustment assembly, mounted on the mounting base 5, includes:

[0041] The driving gear 8 is provided corresponding to the first mounting hole 6 and can rotate relative to the mounting base 5. The driving gear 8 and the mounting base 5 can be locked together.

[0042] Driven gear 9 is provided corresponding to the second mounting hole 7 and can rotate relative to the mounting base 5. Driven gear 9 is meshed and connected to the driving gear 8. A clamping station 11 for fixing the laser gyroscope cavity 10 is provided on the side of driven gear 9 away from the mounting base 5.

[0043] For details, please refer to Figure 1 The gyroscope cavity 10 is a transparent structure. When trimming the gyroscope cavity 10, it needs to be mounted on the light-transmitting base 4 of the microscope. The microscope's light source 27 is then turned on so that it shines through the light-transmitting base 4 onto the laser gyroscope cavity 10, facilitating observation of the manual trimming process and the amount of aperture enlargement. The microscope eyepiece's display screen 1 has mutually perpendicular horizontal scale lines 2 and vertical scale lines 3, such as... Figure 2 As shown, during the adjustment, the direction of the laser gyroscope cavity 10 is adjusted so that the hole wall of the aperture 25 coincides with the horizontal scale line 2, and the adjustment begins; the vertical scale line 3 is used to observe the amount of hole enlargement.

[0044] Specifically, the trimming fixture provided in this embodiment includes a mounting base 5 and an adjustment assembly disposed on the mounting base 5, such as... Figure 4 As shown, the mounting base 5 is provided with a first mounting hole 6 and a second mounting hole 7. The first mounting hole 6 and the second mounting hole 7 are used to install the adjustment assembly. The adjustment assembly includes a driving gear 8 and a driven gear 9. (Refer to...) Figure 5 and Figure 6The driving gear 8 is positioned corresponding to the first mounting hole 6, and the driven gear 9 is positioned corresponding to the second mounting hole 7. The driving gear 8 and the driven gear 9 mesh with each other and are both rotatable relative to the mounting base 5. Both the driving gear 8 and the driven gear 9 have one side attached to the top surface of the mounting base 5. A clamping station 11 is provided on the side of the driven gear 9 away from the mounting base 5. The clamping station 11 matches the shape of the laser gyroscope cavity 10, allowing the laser gyroscope cavity 10 to be embedded in the clamping station 11 to prevent rotation. The driving gear 8 drives the driven gear 9 to rotate, adjusting the angle of the laser gyroscope cavity 10. The size of the driving gear 8 is smaller than that of the driven gear 9, facilitating fine-tuning of the angle of the laser gyroscope cavity 10. The driving gear 8 has a locking function with the mounting base 5. After adjusting the angle of the laser gyroscope cavity 10, the driving gear 8 is locked first to ensure the stability of the laser gyroscope cavity 10 before starting the adjustment operation. The trimming fixture needs to be used in conjunction with a microscope. During trimming, the mounting base 5 is fixed to the light-transmitting base 4 of the microscope.

[0045] Furthermore, the drive gear 8 is mounted on the first mounting hole 6 via a positioning component, the positioning component comprising:

[0046] A locking bolt 12 and a locking nut 13 are provided. The locking bolt 12 passes through the drive gear 8 and the mounting base 5, and cooperates with the locking nut 13 to install the drive gear 8 onto the mounting base 5. The nut of the locking bolt 12 and the locking nut 13 are respectively provided on both sides of the mounting base 5.

[0047] The self-rotating bearing 14 is coaxially disposed on the inner circumferential side of the driving gear 8 and sleeved on the locking bolt 12.

[0048] For details, please refer to Figure 7The drive gear 8 is connected to the first mounting hole 6 via a positioning assembly. The positioning assembly allows the drive gear 8 to rotate relative to the mounting base 5 and also locks the drive gear 8 after it rotates. The positioning assembly includes a locking bolt 12, a locking nut 13, and a self-rotating bearing 14. The locking bolt 12 passes through both the drive gear 8 and the first mounting hole 6. The locking nut 13 is located at the bottom of the mounting base 5 and is threadedly connected to the locking bolt 12. The self-rotating bearing 14 is sleeved on the locking nut 13. The drive gear 8 is sleeved between the self-rotating bearings 14. The inner ring of the self-rotating bearing 14 contacts the locking bolt 12, and the outer ring of the self-rotating bearing 14 contacts the inner side of the drive gear 8. The drive gear 8 rotates around the locking bolt 12 via the self-rotating bearings 14. After adjusting the angle of the laser gyroscope cavity 10, rotate the locking nut 13 until it abuts against the bottom surface of the mounting base 5, thereby causing the nut on the top of the locking bolt 12 to press against the drive gear 8, thus locking the drive gear 8.

[0049] Furthermore, the positioning assembly also includes an upper washer 15 and a lower washer 16, which are sleeved on the locking bolt 12. The upper washer 15 is located between the nut of the locking bolt 12 and the self-rotating bearing 14, and the lower washer 16 is located between the self-rotating bearing 14 and the mounting base 5.

[0050] Specifically, the positioning assembly further includes an upper washer 15 and a lower washer 16. The upper washer 15 and the lower washer 16 are sleeved on the locking bolt 12 and respectively located at the upper and lower ends of the self-rotating bearing 14. The upper washer 15 and the lower washer 16 have the same diameter as the self-rotating bearing 14 and are also located between the locking bolt 12 and the drive gear 8. The upper washer 15 and the lower washer 16 are used to limit the self-rotating bearing 14. At the same time, the sum of the thickness of the upper washer 15, the lower washer 16 and the self-rotating bearing 14 is greater than the thickness of the drive gear 8. After the locking nut 13 is tightened, the locking nut 13 and the nut of the locking bolt 12 respectively squeeze the lower washer 16 and the upper washer 15, which can further lock the drive gear 8.

[0051] Furthermore, the positioning component also includes a locking member 17, which passes through the drive gear 8 and is threadedly connected to the drive gear 8. The locking member 17 has an abutment portion 18 at one end near the mounting base 5, and a rotating handle 19 is rotatably mounted on the other end of the locking member 17 away from the mounting base 5.

[0052] Specifically, the locking member 17 is a bolt. The locking member 17 passes through the driving gear 8 from the side away from the mounting base 5. The locking member 17 is threadedly connected to the driving gear 8. One end of the locking member 17 passing through the driving gear 8 forms an abutment portion 18. By rotating the locking member 17 to move the abutment portion 18 away from the mounting base 5, the driving gear 8 can rotate. When the locking member 17 is rotated until the abutment portion 18 passes through the driving gear 8 and abuts against the top surface of the mounting base 5, the locking member 17 restricts the rotation of the driving gear 8. A rotating handle 19 is provided at the end of the locking member 17 away from the mounting base 5. The rotating handle 19 is coaxially arranged with the locking member 17 and can rotate relative to the locking member 17 about an axis. The rotating handle 19 is used to facilitate the rotation of the driving gear 8. In other embodiments, the driving gear 8 can also be driven by a motor.

[0053] Furthermore, the driven gear 9 is provided with a plurality of positioning bosses 20 on the side away from the mounting base 5. The plurality of positioning bosses 20 are arranged around the axis of the driven gear 9, and the clamping station 11 is formed between the plurality of positioning bosses 20. A rotating frame 21 is formed on the side of the driven gear 9 close to the mounting base 5. The rotating frame 21 is annular and embedded in the second mounting hole 7 so that the driven gear 9 rotates relative to the mounting base 5.

[0054] Specifically, in this embodiment, as shown in the figure, three positioning bosses 20 are provided, forming a clamping station 11 between the three positioning bosses 20. When the laser gyroscope cavity 10 is placed on the clamping station 11, it can prevent the laser gyroscope cavity 10 from rotating relative to the driven gear 9. The driven gear 9 is rotatably connected to the second mounting hole 7 through a rotating frame 21. The rotating frame 21 is formed on the side of the driven gear 9 near the mounting base 5. The rotating frame 21 is annular and coaxially arranged with the driven gear 9. The way the rotating frame 21 is embedded in the second mounting hole 7 makes it easy to install and remove the driven gear 9, and facilitates the adjustment of the driven gear 9 according to the size of the laser gyroscope cavity 10.

[0055] Furthermore, a light-transmitting area 22 is formed on the inner circumferential side of the rotating frame 21, and the light-transmitting area 22 extends through the driven gear 9 to the side of the driven gear 9 away from the mounting base 5.

[0056] For details, please refer to Figure 6 and Figure 8The reason for setting the rotating frame 21 as a ring is to allow relative rotation between the driven gear 9 and the mounting base 5, while forming a light-transmitting area 22 on the inner side of the rotating frame 21. The light-transmitting area 22 passes through the driven gear 9, so that when the light source 27 is being adjusted, it can pass through the light-transmitting base 4 and the light-transmitting area 22 to illuminate the laser gyroscope cavity 10, thereby improving the clarity when observed through the microscope.

[0057] Furthermore, the first mounting hole 6 has a strip-shaped cross-section and extends radially along the second mounting hole 7.

[0058] For details, please refer to Figure 4 The first mounting hole 6 is not a circular hole like the second mounting hole 7. The cross-section of the first mounting hole 6 is elongated. Since the elongated cross-section of the first mounting hole 6 extends along the radial direction of the second mounting hole 7, the locking bolt 12 can drive the drive gear 8 to move along the radial direction of the second mounting hole 7. This allows the drive gear 8 to cooperate with the driven gear 9 when the driven gear 9 is replaced according to the size of the laser gyroscope cavity 10.

[0059] Furthermore, the mounting base 5 is provided with a mounting hole 23, which is used in conjunction with a mounting screw 24 to connect the mounting base 5 and the through mounting base 5.

[0060] Specifically, such as Figure 8 As shown, the mounting base 5 is detachably connected to the light-transmitting base 4 by passing the mounting screw 24 through the mounting hole 23.

[0061] Example 2

[0062] This embodiment provides a method for shaping and positioning the internal hole of a laser gyroscope cavity, based on the tooling for shaping and positioning the internal hole of a laser gyroscope cavity as described in Embodiment 1. The method includes:

[0063] S100. Install the laser gyroscope cavity 10 on the clamping station 11, and install the mounting base 5 on the light-transmitting base 4;

[0064] S200, Rotate the drive gear 8, thereby driving the driven gear 9 to rotate, while observing the display screen 1;

[0065] S300. When the aperture wall of the aperture 25 of the laser gyroscope cavity 10 coincides with the horizontal scale line 2, lock the drive gear 8.

[0066] S400. Use a trimming tool to rub and enlarge the capillary holes 26 at both ends of the aperture 25, and observe the position of the hole wall of the capillary hole 26 and the longitudinal scale line 3 on the display screen 1 in real time until the hole wall of the capillary hole 26 reaches the target scale.

[0067] Specifically, the trimming method provided in this embodiment includes:

[0068] In step S100, a suitable driven gear 9 is selected according to the size of the laser gyroscope cavity 10, the laser gyroscope cavity 10 is installed on the clamping station 11 on the driven gear 9, the driven gear 9 is installed on the second mounting hole 7 of the mounting base 5, and the mounting base 5 is installed with the light-transmitting base 4 by the mounting screw 24.

[0069] In step S200, the active gear 8 is rotated by holding the rotating handle 19, which in turn drives the driven gear 9 to rotate to adjust the angle of the laser gyroscope cavity 10. While rotating, the display screen 1 of the microscope eyepiece is observed in real time to position the laser gyroscope cavity 10.

[0070] In step S300, while rotating the drive gear 8, observe whether the hole wall of the aperture 25 of the laser gyroscope cavity 10 coincides with the horizontal scale line 2. If they do not coincide, continue to adjust. If they coincide, tighten the locking nut 13 and rotate the locking member 17 so that the abutment part 18 abuts against the top surface of the mounting base 5 to lock the drive gear 8, thereby preventing the laser gyroscope cavity 10 from continuing to rotate.

[0071] In step S400, a trimming tool is used to rub and enlarge the capillary holes 26 at both ends of the aperture 25. During the enlargement, the tool is compared with the horizontal scale line 2 to ensure that the axes of the capillary holes 26 and the aperture 25 are collinear. At the same time, the tool is compared with the vertical scale line 3. When the hole wall of the capillary hole 26 coincides with the target scale, it indicates that the hole diameter of the capillary hole 26 meets the requirements, thus completing the trimming.

[0072] The adjustment method provided in this application facilitates the adjustment of the angle of the laser gyroscope cavity 10, and the position of the laser gyroscope 10 can be locked after the angle is adjusted. This eliminates the need for the operator to hold and fix the laser gyroscope cavity 10, avoiding hand and eye fatigue for the operator. It also allows for accurate monitoring of the hole enlargement amount, ultimately resulting in a better adjustment effect.

[0073] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A fixture for adjusting the shape and position of the cavity hole in a laser gyroscope, used in conjunction with a microscope for observation, wherein the microscope's display screen (1) has mutually perpendicular horizontal scale lines (2) and vertical scale lines (3), characterized in that, include: Mounting base (5), the mounting base (5) is provided with a first mounting hole (6) and a second mounting hole (7), the mounting base (5) is detachably connected to the light-transmitting base (4) of the microscope; An adjustment assembly, mounted on the mounting base (5), the adjustment assembly comprising: The drive gear (8) is provided corresponding to the first mounting hole (6) and can rotate relative to the mounting base (5). The drive gear (8) and the mounting base (5) can be locked together. Driven gear (9) is provided corresponding to the second mounting hole (7) and can rotate relative to the mounting base (5). Driven gear (9) is meshed and connected to the driving gear (8). A clamping station (11) for fixing the laser gyroscope cavity (10) is provided on the side of the driven gear (9) away from the mounting base (5). When adjusting the direction of the laser gyroscope cavity (10) so that the hole wall of the aperture (25) coincides with the horizontal scale line (2), the adjustment begins; the vertical scale line (3) is used to observe the amount of hole enlargement.

2. The fixture for adjusting the shape and position of the cavity hole in a laser gyroscope according to claim 1, characterized in that, The drive gear (8) is mounted on the first mounting hole (6) via a positioning component, the positioning component comprising: A locking bolt (12) and a locking nut (13) are provided. The locking bolt (12) passes through the drive gear (8) and the mounting base (5) to cooperate with the locking nut (13) to install the drive gear (8) on the mounting base (5). The nut of the locking bolt (12) and the locking nut (13) are respectively provided on both sides of the mounting base (5). The self-rotating bearing (14) is coaxially disposed on the inner circumference of the driving gear (8) and sleeved on the locking bolt (12).

3. The fixture for adjusting the shape and position of the cavity hole in a laser gyroscope according to claim 2, characterized in that, The positioning assembly also includes an upper washer (15) and a lower washer (16), which are sleeved on the locking bolt (12). The upper washer (15) is located between the nut of the locking bolt (12) and the self-rotating bearing (14), and the lower washer (16) is located between the self-rotating bearing (14) and the mounting base (5).

4. The fixture for adjusting the shape and position of the cavity hole in a laser gyroscope according to claim 3, characterized in that, The positioning component also includes a locking member (17), which passes through the drive gear (8) and is threadedly connected to the drive gear (8). The locking member (17) has an abutment part (18) at one end near the mounting base (5), and a rotating handle (19) is rotatably mounted on the other end of the locking member (17) away from the mounting base (5).

5. The fixture for adjusting the shape and position of the cavity hole in a laser gyroscope according to claim 1, characterized in that, The driven gear (9) has multiple positioning bosses (20) on the side away from the mounting base (5). The multiple positioning bosses (20) are arranged around the axis of the driven gear (9), and the clamping station (11) is formed between the multiple positioning bosses (20). A rotating frame (21) is formed on the side of the driven gear (9) close to the mounting base (5). The rotating frame (21) is annular and embedded in the second mounting hole (7) so that the driven gear (9) can rotate relative to the mounting base (5).

6. The fixture for adjusting the shape and position of the cavity bore in a laser gyroscope according to claim 5, characterized in that, A light-transmitting area (22) is formed on the inner periphery of the rotating frame (21), and the light-transmitting area (22) extends through the driven gear (9) to the side of the driven gear (9) away from the mounting base (5).

7. The laser gyroscope cavity internal hole shape and position trimming fixture according to any one of claims 1-6, characterized in that, The first mounting hole (6) has a strip-shaped cross section and extends radially along the second mounting hole (7).

8. The fixture for adjusting the shape and position of the cavity bore of a laser gyroscope according to any one of claims 1-6, characterized in that, The mounting base (5) is provided with mounting holes (23), and the mounting holes (23) are used in conjunction with mounting screws (24) to connect the mounting base (5) and the light-transmitting base (4).

9. A method for adjusting the shape and position of the cavity hole in a laser gyroscope, characterized in that, Based on the laser gyroscope cavity internal hole shape and position trimming fixture as described in any one of claims 1-8, the method includes: The laser gyroscope cavity (10) is installed on the clamping station (11), and the mounting base (5) is installed on the light-transmitting base (4); Rotate the drive gear (8), which in turn drives the driven gear (9) to rotate, while observing the display screen (1). When the aperture wall of the laser gyroscope cavity (10) coincides with the horizontal scale line (2), the drive gear (8) is locked. Use a trimming tool to rub and enlarge the capillary holes (26) at both ends of the aperture (25), and observe the position of the hole wall of the capillary hole (26) and the longitudinal scale line (3) on the display screen (1) in real time until the hole wall of the capillary hole (26) reaches the target scale.