A shock absorber assembly method and tooling for an inertial measurement device

Abstract

The application aims to solve the technical problems that the existing shock absorber assembly technology lacks precise positioning means, is multi-directionally strongly coupled, and is difficult to realize high-precision, zero-stress, high-efficiency and high-consistency assembly, thereby affecting the performance and reliability of the inertial measurement device, and provides a shock absorber assembly method and tool for an inertial measurement device. A plurality of shock absorber assembly tools are respectively fastened and installed at all inner shock absorber to-be-installed positions in one spatial direction of the inertial measurement device, automatic centering and locking of the shock absorber assembly tool, the inner platform body and the base in the spatial reference direction are realized, then a plurality of inner shock absorbers are assembled at all inner shock absorber to-be-installed positions in the other two spatial directions, a stable spatial support frame is formed, the plurality of shock absorber assembly tools are disassembled, and a plurality of inner shock absorbers are assembled at all inner shock absorber to-be-installed positions in the one spatial direction.

Description

Technical Field

[0001] This invention relates to a vibration damper assembly method, specifically to a vibration damper assembly method for an inertial measurement device and the vibration damper assembly fixture used in the method. Background Technology

[0002] As a core component of high-precision inertial navigation systems, inertial measurement units (IMUs) are highly sensitive to vibration and shock, with their gyroscopes, accelerometers, and other sensitive devices being particularly susceptible to these effects. Broadband vibrations generated by the carrier's operation directly cause measurement errors, impacting the IMU's navigation accuracy and operational stability. In engineering applications, IMU vibration dampers typically employ a two-stage, cascaded damping architecture: the primary damper provides initial vibration isolation between the carrier and the intermediate mass block, while the secondary damper, positioned between the intermediate mass block and the IMU body, provides more precise isolation of residual vibrations. This secondary damper is crucial for ensuring the IMU's accuracy, environmental adaptability, and long-term reliability. The secondary dampers are usually symmetrically distributed along the orthogonal X, Y, and Z spatial directions of the IMU, and their installation quality directly determines their actual vibration isolation performance.

[0003] Currently, the assembly process of vibration dampers in inertial measurement units (IMUs) suffers from significant defects: First, the lack of precise positioning methods makes it easy for the installation axis of the vibration damper to deviate from the design axis, leading to additional bending moments and residual stresses, causing the dynamic characteristics to deviate from the design values. Second, multiple vibration dampers are coupled together in three-dimensional space; adjustments in one direction can disturb the assembly state in other directions, requiring repeated iterative adjustments. Third, traditional manual assembly is prone to problems such as residual stress, poor consistency, and low efficiency. These problems make it difficult to realize the theoretical design performance of the vibration dampers, severely restricting the mass production and performance improvement of high-precision IMUs. Therefore, there is an urgent need for a high-precision, low-stress, and standardized assembly technology for vibration dampers in inertial measurement units to solve the bottlenecks of existing assembly processes and ensure the performance and reliability of IMU products. Summary of the Invention

[0004] The purpose of this invention is to solve the technical problems of existing shock absorber assembly processes, such as the lack of precise positioning methods, the mutual coupling of multiple shock absorbers in three-dimensional space, and the tendency of manual assembly to produce stress residue, poor consistency and low efficiency, which make it difficult to achieve high-precision, zero-stress, high-efficiency and high-consistency assembly, thus affecting the performance and reliability of inertial measurement products. The invention provides a shock absorber assembly method and tooling for inertial measurement devices.

[0005] To achieve the above objectives, the technical solution provided by this invention is as follows:

[0006] A method for assembling vibration dampers in an inertial measurement device, the inertial measurement device comprising a base, an inner platform installed inside the base, and a plurality of inner vibration dampers located within the base and installed between the base and the inner platform, the plurality of inner vibration dampers being respectively located in the X, Y, and Z directions of three-dimensional space; characterized in that it includes the following steps:

[0007] S0 Prepare multiple shock absorber assembly fixtures. Each shock absorber assembly fixture includes a contour positioning block and a connecting part set at both ends of the contour positioning block. The outer contour of the contour positioning block matches the outer contour of the inner shock absorber.

[0008] According to the structural requirements, S1 selects one of the X, Y, and Z directions in three-dimensional space as the first direction, and the other two directions as the second and third directions respectively;

[0009] S2 Under the static balance state of the inner platform of the inertial measurement device, multiple vibration damper assembly fixtures are fastened to the installation positions of all the inner vibration dampers of the inertial measurement device located in the first direction through the connecting parts at both ends, so as to realize the alignment of the vibration damper assembly fixtures with the inner platform and base and lock the spatial reference direction.

[0010] S3 Inspect the appearance of all prepared internal shock absorbers to confirm that their appearance meets the quality requirements;

[0011] S4 sequentially assembles one internal vibration damper at each of the internal vibration damper installation positions in the second and third directions to form a stable spatial support frame;

[0012] S5 Disassemble all the shock absorber assembly fixtures in the first direction, and assemble one internal shock absorber at the installation position of each internal shock absorber in the first direction.

[0013] Further, step S2 includes the following steps:

[0014] S21 Check the relative assembly position of the base and the inner platform of the inertial measurement device and ensure that the assembly positions of the two are aligned. Then perform static balancing operation on the inner platform.

[0015] When the inner platform of the inertial measurement device is in static equilibrium, a damper assembly fixture is placed at the installation positions of multiple inner dampers in the first direction of the inertial measurement device.

[0016] S23 securely connects one end of each shock absorber assembly fixture to the inner platform body via a connecting part, and the other end to the base via a connecting part, thereby achieving alignment of the shock absorber assembly fixture with the inner platform body and the base and locking the spatial reference direction.

[0017] Further, step S4 includes the following steps:

[0018] S41 At the installation positions of multiple internal dampers in the second direction of the inertial measurement device, place one internal damper at each of the installation positions.

[0019] S42 uses the upper pressure plate to press the upper end of each inner shock absorber, so that its upper end is in contact with the mounting surface of the base, and uses connecting screws to pass through the mounting holes of the base and connect to the upper pressure plate threadedly according to the preset tightening torque, so that each inner shock absorber is securely connected to the base.

[0020] S43 uses the lower pressure plate to press the lower end of each inner damper, so that its lower end fits against the mounting surface of the inner platform, and uses the connecting screw to pass through the mounting hole of the inner platform and thread it with the lower pressure plate according to the preset tightening torque, so that each inner damper is securely connected to the inner platform.

[0021] S44 At the locations where multiple internal vibration dampers are to be installed in the third direction of the inertial measurement device, place one internal vibration damper at each location and repeat the same operations as steps S42-S43 to form a stable spatial support frame.

[0022] Further, step S5 includes the following steps:

[0023] S51 Disassemble the assembly fixture for the multiple shock absorbers;

[0024] S52 Place one internal vibration damper at each of the multiple internal vibration damper installation positions in the first direction of the inertial measurement device.

[0025] S53 uses the upper pressure plate to press the upper end of each inner shock absorber, so that its upper end is in contact with the mounting surface of the base, and uses connecting screws to pass through the mounting holes of the base and connect to the upper pressure plate threadedly according to the preset tightening torque, so that each inner shock absorber is securely connected to the base.

[0026] S54 uses the lower pressure plate to press the lower end of each inner damper, so that its lower end fits against the mounting surface of the inner platform, and uses connecting screws to pass through the mounting holes of the inner platform and thread them with the lower pressure plate according to the preset tightening torque, so that each inner damper is securely connected to the inner platform.

[0027] Furthermore, in step S0, the number of multiple shock absorber assembly fixtures is defined as M, and the number of internal shock absorbers installed in each of the X, Y, and Z directions is N, then M≥N.

[0028] Furthermore, step S3 specifically includes:

[0029] Inspect all prepared internal shock absorbers to ensure that their surfaces are smooth and flat, and free from cracks, burrs, sand holes, bubbles, corrosion, or other mechanical damage, so as to ensure that the appearance of the internal shock absorbers meets the quality requirements.

[0030] Meanwhile, the present invention also provides a damper assembly fixture for an inertial measurement device, applied to the aforementioned damper assembly method for an inertial measurement device; its special feature is that:

[0031] It includes a contour positioning block and connecting parts at both ends of the contour positioning block for connecting with the base and the inner platform respectively. The outer contour of the contour positioning block matches the outer contour of the prepared inner shock absorber.

[0032] Furthermore, the connecting part includes threaded connecting posts integrally disposed at both ends of the contour positioning block, and mounting nuts adapted to the threaded connecting posts.

[0033] Furthermore, the connecting part is a threaded connecting groove formed at both ends of the contour positioning block. The threaded connecting groove is used to connect and fasten to the base and the inner platform body respectively through the connecting screws of the inner damper.

[0034] Compared with the prior art, the present invention has the following beneficial technical effects:

[0035] (1) The present invention provides a method for assembling a damper for an inertial measurement device. By adopting the distribution strategy of "first solidifying a one-dimensional reference and then unfolding it in sequence", the complex three-dimensional spatial coupling assembly is decomposed into three independent one-dimensional linear operations, which completely avoids mutual interference during the assembly of multi-directional dampers, ensures the long-term accuracy and stability of the inertial measurement group, and the installation process is standardized, repeatable, and does not require repeated adjustments and iterations. It does not depend on the operator's skills, significantly reduces the individual differences of products, improves the consistency and quality control of mass production, and the assembly cycle can be shortened by more than 50% according to tests.

[0036] (2) The present invention provides a method for assembling a damper for an inertial measurement device. The spatial reference direction is locked by the damper assembly fixture. Each damper is then positioned and installed using this reference, ensuring that the installation axis of each damper is precisely aligned with the design axis. This eliminates the additional bending moment and stiffness characteristic deviation caused by the centering deviation, reduces the failure caused by assembly problems, and lowers the technical risk and after-sales cost of maintenance.

[0037] (3) The vibration damper assembly fixture of the inertial measurement device of the present invention establishes a rigid spatial reference by means of contour positioning block. The vibration dampers in each direction are then positioned and installed based on this reference, which fundamentally eliminates the misalignment of the vibration dampers caused by manual adjustment, effectively avoids the deformation of the installation base and the introduction of residual stress, and reduces the zero drift and locking zone error caused by the installation process from the source. Attached Figure Description

[0038] Figure 1 This is a flowchart of a vibration damper assembly method for an inertial measurement device according to the present invention;

[0039] Figure 2 This is a schematic diagram of the assembly structure of the damper assembly fixture in step S2 of an embodiment of the damper assembly method for an inertial measurement device of the present invention.

[0040] Figure 3 This is a schematic diagram of the assembly structure of the inner vibration damper in steps S4 and S5 of an embodiment of the vibration damper assembly method of an inertial measurement device according to the present invention.

[0041] Figure 4 This is a schematic diagram of an embodiment of the vibration damper assembly fixture for an inertial measurement device according to the present invention.

[0042] The annotations in the attached figures are explained as follows:

[0043] 1-Shock absorber assembly fixture, 11-Following positioning block, 12-Threaded connecting column, 2-Base, 3-Inner platform, 4-Inner shock absorber, 5-Upper pressure plate, 6-Lower pressure plate. Detailed Implementation

[0044] To make the objectives, advantages, and features of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0045] An inertial measurement unit (IMU) includes a base, an inner platform installed inside the base, and multiple internal vibration dampers located inside the base and installed between the base and the inner platform. The multiple internal vibration dampers are located in the X, Y, and Z directions of three-dimensional space, respectively. To address the technical problems of existing vibration damper assembly technology, such as the lack of precise positioning methods and strong multi-directional coupling, which makes it difficult to achieve high-precision, zero-stress, high-efficiency, and high-consistency assembly and thus affect the performance and reliability of IMU products, this embodiment provides a vibration damper assembly method for an IMU, applying a vibration damper assembly fixture for an IMU.

[0046] Example 1

[0047] like Figure 4 As shown, an assembly fixture for a vibration damper of an inertial measurement device includes a contour positioning block 11 and a mounting nut. The outer contour of the contour positioning block 11 matches the outer contour of the inner vibration damper 4 of the inertial measurement device to be assembled. Both ends of the contour positioning block 11 are integrally provided with threaded connecting posts 12 for connecting with the base 2 and the inner platform 3 respectively. The threaded connecting posts 12 are adapted to the mounting nut.

[0048] And such Figure 1 As shown, a method for assembling a vibration damper for an inertial measurement device includes the following steps:

[0049] S0 Prepare multiple shock absorber assembly fixtures 1. Each shock absorber assembly fixture 1 includes a contour positioning block 11 and threaded connecting posts 12 set at both ends of the contour positioning block 11. The outer contour of the contour positioning block 11 matches the outer contour of the inner shock absorber 4.

[0050] Definition: If the number of multiple shock absorber assembly fixtures 1 is M, and the number of internal shock absorbers 4 installed in each of the X, Y, and Z directions is N, then M≥N.

[0051] S1 According to the structural requirements, one of the X, Y, and Z directions in three-dimensional space is selected as the first direction, and the other two directions are selected as the second and third directions, respectively. In this embodiment, the X direction is selected as the first direction, the Y direction as the second direction, and the Z direction as the third direction.

[0052] S2 In the static balance state of the inner platform 3 of the inertial measurement device, multiple vibration damper assembly fixtures 1 are fastened to the installation positions of all the inner vibration dampers 4 of the inertial measurement device located in the first direction through the connecting parts at both ends, so as to realize the alignment of the vibration damper assembly fixtures 1 with the inner platform 3 and the base 2 and lock the spatial reference direction.

[0053] S21 Check the relative assembly position of the base 2 and the inner platform 3 on the inertial measurement device. After ensuring that the assembly positions of the two are aligned, perform static balancing operation on the inner platform 3.

[0054] S22 When the inner platform 3 of the inertial measurement device is in static equilibrium, the installation positions of the four inner vibration dampers 4 in the X direction of the inertial measurement device.

[0055] S23 such as Figure 2 As shown, by installing nuts, one end of the threaded connecting column 12 of the four shock absorber assembly fixture 1 is fastened to the inner platform 3, and the other end of the threaded connecting column 12 is fastened to the base 2, so as to realize the alignment of the shock absorber assembly fixture 1 with the inner platform 3 and the base 2 and lock the spatial reference direction.

[0056] S3 Inspect all prepared inner shock absorbers 4 to ensure that the surface is smooth and flat, and free from cracks, burrs, sand holes, bubbles, corrosion or other mechanical damage, so as to ensure that the appearance of the inner shock absorbers 4 meets the quality requirements.

[0057] S4 Install an inner vibration damper 4 at each of the inner vibration damper installation positions in the Y and Z directions to form a stable spatial support frame;

[0058] S41 At the four installation positions of the internal vibration dampers 4 in the Y-space direction of the inertial measurement device, place one internal vibration damper 4 at each of the four positions to be installed.

[0059] S42 as Figure 3As shown, the upper end of each inner damper 4 is pressed by the upper pressure plate 5 so that its upper end is in contact with the mounting surface of the base 2, and the connecting screw is threaded through the mounting hole of the base 2 and threaded to the upper pressure plate 5 according to the preset tightening torque, so that each inner damper 4 is fastened to the base 2 respectively.

[0060] S43 as Figure 3 As shown, the lower end of each inner damper 4 is pressed by the lower pressure plate 6 so that its lower end is in contact with the mounting surface of the inner platform 3, and the connecting screw is threaded through the mounting hole of the inner platform 3 and threaded to the lower pressure plate 6 according to the preset tightening torque, so that each inner damper 4 is fastened to the inner platform 3 respectively.

[0061] S44 At the four locations where the internal vibration dampers are to be installed in the Z-space direction of the inertial measurement device, place one internal vibration damper 4 at each location, and repeat the same operation as steps S42-S43 to form a stable spatial support frame.

[0062] S5 Disassemble all the shock absorber assembly fixtures 1 in the X direction, and assemble one inner shock absorber 4 at the installation position of each inner shock absorber 4 in the first direction.

[0063] S51 Disassemble the four shock absorber assembly fixtures 1;

[0064] S52 At the four installation positions of the internal vibration dampers 4 in the X-space direction of the inertial measurement device, place one internal vibration damper 4 at each of the four positions to be installed.

[0065] S53 uses the upper pressure plate 5 to press the upper end of each inner damper 4 so that its upper end is in contact with the mounting surface of the base 2, and uses connecting screws to pass through the mounting holes of the base 2 and thread them to the upper pressure plate 5 according to the preset tightening torque, so that each inner damper 4 is fastened to the base 2 respectively.

[0066] S54 uses the lower pressure plate 6 to press the lower end of each inner damper 4 so that its lower end fits against the mounting surface of the inner platform 3, and uses connecting screws to thread through the mounting holes of the inner platform 3 and the lower pressure plate 6 according to the preset tightening torque, so that each inner damper 4 is fastened to the inner platform 3 respectively.

[0067] Example 2

[0068] The difference between this embodiment 2 and embodiment 1 is that: an assembly fixture for a vibration damper of an inertial measurement device includes a contour positioning block 11. The outer contour of the contour positioning block 11 matches the outer contour of the inner vibration damper 4 of the inertial measurement device to be assembled. Threaded connection grooves are provided at both ends of the contour positioning block 11. The threaded connection grooves are used to connect and fasten to the base 2 and the inner platform 3 respectively through the connecting screws of the inner vibration damper 4.

[0069] Conversely, a method for assembling a vibration damper for an inertial measurement device includes the following steps:

[0070] S0 Prepare multiple shock absorber assembly fixtures 1. Each shock absorber assembly fixture 1 includes a contour positioning block 11 and threaded connection grooves provided at both ends of the contour positioning block 11. The outer contour of the contour positioning block 11 matches the outer contour of the inner shock absorber 4.

[0071] Definition: If the number of multiple shock absorber assembly fixtures 1 is M, and the number of internal shock absorbers 4 installed in each of the X, Y, and Z directions is N, then M≥N.

[0072] S1 According to the structural requirements, one of the X, Y, and Z directions in three-dimensional space is selected as the first direction, and the other two directions are selected as the second and third directions, respectively. In this embodiment, the X direction is selected as the first direction, the Y direction as the second direction, and the Z direction as the third direction.

[0073] S2 In the static balance state of the inner platform 3 of the inertial measurement device, multiple vibration damper assembly fixtures 1 are fastened to the installation positions of all the inner vibration dampers 4 of the inertial measurement device located in the first direction through the connecting parts at both ends, so as to realize the alignment of the vibration damper assembly fixtures 1 with the inner platform 3 and the base 2 and lock the spatial reference direction.

[0074] S21 Check the relative assembly position of the base 2 and the inner platform 3 on the inertial measurement device. After ensuring that the assembly positions of the two are aligned, perform static balancing operation on the inner platform 3.

[0075] S22 When the inner platform 3 of the inertial measurement device is in static equilibrium, the installation positions of the four inner vibration dampers 4 in the X direction of the inertial measurement device.

[0076] S23 uses connecting screws that mate with the inner damper 4 to pass through the mounting holes of the inner platform 3 and connect to the threaded grooves at one end of the four damper assembly fixtures 1, so that the four damper assembly fixtures 1 are respectively fastened to the inner platform 3. Then, using connecting screws that mate with the inner damper 4 to pass through the mounting holes of the base 2 and connect to the threaded grooves at the other end of the four damper assembly fixtures 1, so that the four damper assembly fixtures 1 are respectively fastened to the base 2, thereby achieving the alignment of the damper assembly fixtures 1 with the inner platform 3 and the base 2 and locking the spatial reference direction.

[0077] S3 Inspect all prepared inner shock absorbers 4 to ensure that the surface is smooth and flat, and free from cracks, burrs, sand holes, bubbles, corrosion or other mechanical damage, so as to ensure that the appearance of the inner shock absorbers 4 meets the quality requirements.

[0078] S4 Install an inner vibration damper 4 at each of the inner vibration damper installation positions in the Y and Z directions to form a stable spatial support frame;

[0079] S41 At the four installation positions of the internal vibration dampers 4 in the Y-space direction of the inertial measurement device, place one internal vibration damper 4 at each of the four positions to be installed.

[0080] S42 uses the upper pressure plate 5 to press the upper end of each inner damper 4 so that its upper end is in contact with the mounting surface of the base 2, and uses connecting screws to pass through the mounting holes of the base 2 and thread them to the upper pressure plate 5 according to the preset tightening torque, so that each inner damper 4 is fastened to the base 2 respectively.

[0081] S43 uses the lower pressure plate 6 to press the lower end of each inner damper 4 so that its lower end fits against the mounting surface of the inner platform 3, and uses the connecting screw to pass through the mounting hole of the inner platform 3 and thread it to the lower pressure plate 6 according to the preset tightening torque, so that each inner damper 4 is fastened to the inner platform 3 respectively.

[0082] S44 At the four locations where the internal vibration dampers are to be installed in the Z-space direction of the inertial measurement device, place one internal vibration damper 4 at each location, and repeat the same operation as steps S42-S43 to form a stable spatial support frame.

[0083] S5 Disassemble all the shock absorber assembly fixtures 1 in the X direction, and assemble one inner shock absorber 4 at the installation position of each inner shock absorber 4 in the first direction.

[0084] S51 Disassemble the four shock absorber assembly fixtures 1;

[0085] S52 At the four installation positions of the internal vibration dampers 4 in the X-space direction of the inertial measurement device, place one internal vibration damper 4 at each of the four positions to be installed.

[0086] S53 uses the upper pressure plate 5 to press the upper end of each inner damper 4 so that its upper end is in contact with the mounting surface of the base 2, and uses connecting screws to pass through the mounting holes of the base 2 and thread them to the upper pressure plate 5 according to the preset tightening torque, so that each inner damper 4 is fastened to the base 2 respectively.

[0087] S54 uses the lower pressure plate 6 to press the lower end of each inner damper 4 so that its lower end fits against the mounting surface of the inner platform 3, and uses connecting screws to thread through the mounting holes of the inner platform 3 and the lower pressure plate 6 according to the preset tightening torque, so that each inner damper 4 is fastened to the inner platform 3 respectively.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present invention.

Claims

1. A method for assembling vibration dampers in an inertial measurement device, the inertial measurement device comprising a base (2), an inner platform (3) installed inside the base (2), and a plurality of inner vibration dampers (4) located inside the base (2) and installed between the base (2) and the inner platform (3), the plurality of inner vibration dampers (4) being located in the X, Y, and Z directions of three-dimensional space respectively; characterized in that, Includes the following steps: S0 Prepare multiple shock absorber assembly fixtures (1), each shock absorber assembly fixture (1) includes a contour positioning block (11) and a connecting part set at both ends of the contour positioning block (11). The outer contour of the contour positioning block (11) matches the outer contour of the inner shock absorber (4). According to the structural requirements, S1 selects one of the X, Y, and Z directions in three-dimensional space as the first direction, and the other two directions as the second and third directions respectively; S2 In the static balance state of the inner platform (3) of the inertial measurement device, multiple shock absorber assembly fixtures (1) are fastened to the installation positions of all the inner shock absorbers (4) of the inertial measurement device located in the first direction through the connecting parts at both ends, so as to realize the alignment of the shock absorber assembly fixtures (1) with the inner platform (3) and the base (2) and lock the spatial reference direction. S3 Inspect the appearance of all prepared internal shock absorbers (4) to confirm that their appearance meets the quality requirements; S4 Install an internal damper (4) at each of the internal damper installation positions in the second direction and the third direction to form a stable spatial support frame; S5 Disassemble all the damper assembly fixtures (1) in the first direction, and assemble one inner damper (4) at the installation position of each inner damper (4) in the first direction.

2. The method for assembling a vibration damper in an inertial measurement device according to claim 1, characterized in that, Step S2 includes the following steps: S21 Check the relative assembly position of the base (2) and the inner platform (3) of the inertial measurement device, and ensure that the assembly positions of the two are aligned. Then perform static balancing operation on the inner platform (3). When the inner platform (3) of the inertial measurement device is in static equilibrium, a damper assembly fixture (1) is placed at the installation position of the multiple inner dampers (4) in the first direction of the inertial measurement device. S23 One end of each shock absorber assembly fixture (1) is fastened to the inner platform (3) through the connecting part, and the other end is fastened to the base (2) through the connecting part, so as to realize the alignment of the shock absorber assembly fixture (1) with the inner platform (3) and the base (2) and lock the spatial reference direction.

3. The method for assembling a vibration damper in an inertial measurement device according to claim 2, characterized in that, Step S4 includes the following steps: S41 At the installation positions of multiple internal dampers (4) in the second direction of the inertial measurement device, place one internal damper (4) at each of the installation positions. S42 uses the upper pressure plate (5) to press the upper end of each inner damper (4) so ​​that its upper end is in contact with the mounting surface of the base (2), and uses the connecting screw to pass through the mounting hole of the base (2) and thread it to the upper pressure plate (5) according to the preset tightening torque, so that each inner damper (4) is fastened to the base (2). S43 uses the lower pressure plate (6) to press the lower end of each inner damper (4) so ​​that its lower end fits against the mounting surface of the inner platform (3), and uses the connecting screw to pass through the mounting hole of the inner platform (3) and thread it with the lower pressure plate (6) according to the preset tightening torque so that each inner damper (4) is fastened to the inner platform (3). S44 At the locations where multiple internal dampers are to be installed in the third direction of the inertial measurement device, place an internal damper (4) at each location and repeat the same operation as steps S42-S43 to form a stable spatial support frame.

4. The method for assembling a vibration damper in an inertial measurement device according to claim 3, characterized in that, Step S5 includes the following steps: S51 Disassemble the assembly fixture for the multiple shock absorbers (1); S52 At the multiple internal damper installation positions in the first direction of the inertial measurement device, place an internal damper (4) at each of the following locations. S53 The upper end of each inner damper (4) is pressed by the upper pressure plate (5) so that its upper end is in contact with the mounting surface of the base (2), and the connecting screw is threaded through the mounting hole of the base (2) and threaded to the upper pressure plate (5) according to the preset tightening torque so that each inner damper (4) is fastened to the base (2). S54 uses the lower pressure plate (6) to press the lower end of each inner damper (4) so ​​that its lower end fits against the mounting surface of the inner platform (3), and uses the connecting screw to thread it through the mounting hole of the inner platform (3) and the lower pressure plate (6) according to the preset tightening torque, so that each inner damper (4) is fastened to the inner platform (3).

5. The method for assembling a vibration damper in an inertial measurement device according to claim 1, characterized in that: In step S0, the number of multiple shock absorber assembly fixtures (1) is defined as M, and the number of internal shock absorbers (4) installed in each of the X, Y, and Z directions is N, then M≥N.

6. The method for assembling a vibration damper in an inertial measurement device according to claim 1, characterized in that, Step S3 is as follows: Check that the surface of all prepared internal dampers (4) is smooth and flat, and free from cracks, burrs, sand holes, bubbles, corrosion or other mechanical damage, to ensure that the appearance of the internal dampers (4) meets the quality requirements.

7. A vibration damper assembly fixture for an inertial measurement device, applied to the vibration damper assembly method of an inertial measurement device according to any one of claims 1-6; characterized in that: It includes a contour positioning block (11) and connecting parts provided at both ends of the contour positioning block (11) for connecting with the base (2) and the inner platform (3) respectively. The outer contour of the contour positioning block (11) matches the outer contour of the prepared inner damper (4).

8. The vibration damper assembly fixture for an inertial measurement device according to claim 7, characterized in that: The connecting part includes threaded connecting posts (12) integrally disposed at both ends of the contour positioning block (11), and mounting nuts adapted to the threaded connecting posts (12).

9. The vibration damper assembly fixture for an inertial measurement device according to claim 7, characterized in that: The connecting part is a threaded connection groove opened at both ends of the contour positioning block (11). The threaded connection groove is used to connect and fasten the base (2) and the inner platform (3) respectively through the connecting screw of the inner damper (4).

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