A FA fiber array detection fixture

Abstract

The utility model relates to the field of FA fiber array detection discloses a kind of FA fiber array detection fixture, including jig base, the top of jig base is equipped with lifting mouth, the top of jig base is equipped with clamping mechanism, the top of jig base is placed with FA fiber array main body, the clamping mechanism is used to clamp FA fiber array main body.The utility model has the following advantages and effects: vacuum adsorption and mechanical clamping can be carried out simultaneously on FA fiber array, vacuum adsorption fixes FA through uniform negative pressure, avoids the stress deformation of rigid clamping, protects brittle matrix and optical fiber, buffer contact is carried out to FA fiber array by rubber clamping block, its displacement is limited, positioning accuracy and damage prevention are considered, and by disc spring and rubber spring, external vibration can be effectively absorbed, the relative displacement of optical fiber end face and test light path caused by vibration is avoided, micron-level alignment stability is ensured, and detection data fluctuation is reduced.

Description

Technical Field

[0001] This utility model relates to the field of FA fiber array testing technology, and in particular to a FA fiber array testing fixture. Background Technology

[0002] FA (Fiber Optic Array) testing fixtures are precision tooling specifically designed for testing the performance of fiber optic arrays (FAs). They are used to fix and position the FA and, in conjunction with optical instruments, to perform parameter measurements. Their core function is to ensure stable clamping of the FA through a high-precision mechanical structure, guaranteeing accurate alignment of the fiber end face with the test optical path during testing. They can efficiently test key indicators such as fiber spacing, end face flatness, and optical coupling efficiency. Widely used in quality control during the production of optical communication devices, they are an important auxiliary tool for ensuring efficient connection between FAs and optoelectronic devices.

[0003] In related technologies, mechanical clamps are often used to fix and hold FA fiber arrays when testing them. However, relying solely on rigid clamping may cause deformation of the fiber array substrate or fiber, especially for brittle materials (such as quartz and silicon substrates), which can easily cause microcracks and affect device performance. Furthermore, existing equipment lacks a buffer structure, which can cause the optical path coupling to be interrupted momentarily when there is vibration in the working environment, resulting in data acquisition distortion.

[0004] Therefore, we propose a FA fiber array testing fixture to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a FA fiber array testing fixture that reduces mechanical clamping damage and improves clamping stability.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a FA fiber array testing fixture, including a fixture base, a lifting port on the top of the fixture base, a clamping mechanism on the top of the fixture base, a FA fiber array body placed on the top of the fixture base, and the clamping mechanism used to clamp the FA fiber array body; two buffer bases are fixedly installed on the bottom of the fixture base, and connecting steel plates are fixedly installed on the inner side of the two buffer bases, and the tops of the two connecting steel plates are fixedly connected to the bottom of the same fixture base.

[0007] A further feature of this invention is that polyurethane buffer blocks are fixedly installed on the inner sides of both buffer bases, and multiple buffer openings are provided at the bottom of both polyurethane buffer blocks, with disc springs provided on the inner sides of the multiple buffer openings.

[0008] By adopting the above technical solutions, damage to the FA fiber array body caused by rigid impacts can be avoided, thus extending its service life.

[0009] A further feature of this invention is that multiple permanent magnet dampers are fixedly installed at the bottom of both connecting steel plates, and the top ends of multiple disc springs are fixedly connected to the bottom of the corresponding permanent magnet dampers.

[0010] By adopting the above technical solution, the permanent magnet damper, in conjunction with the disc spring and rubber spring, reduces the risk of system resonance and improves overall stability.

[0011] A further feature of this invention is that a buffer plate is fixedly installed at the bottom of each of the two polyurethane buffer blocks, and the other ends of multiple disc springs are fixedly connected to the top of the corresponding buffer plate.

[0012] By adopting the above technical solution, the amplitude of vibration transmitted to the FA fiber array body is reduced, ensuring alignment accuracy during testing.

[0013] A further feature of this invention is that multiple rubber springs are fixedly installed on the top of each of the two buffer plates, with each rubber spring located inside the corresponding disc spring, and the other end of each rubber spring being fixedly connected to the bottom of the corresponding permanent magnet damper.

[0014] By adopting the above technical solutions, energy absorption across the entire frequency band can be achieved through the complementary properties of different materials and structures, from low-frequency small vibrations to instantaneous large impacts.

[0015] A further feature of this invention is that the clamping mechanism includes an adsorption base and two mechanical supports. The adsorption base is slidably installed on the inner side of the lifting port. The adsorption base is provided with a vacuum adsorption component. Two mechanical supports are fixedly installed on the top of the fixture base. Each of the two mechanical supports is provided with a mechanical clamping component.

[0016] By adopting the above technical solution, the combination of vacuum adsorption components and mechanical clamping components with limiting and positioning can effectively overcome the shortcomings of a single mechanical clamp.

[0017] A further feature of this invention is that the vacuum adsorption assembly includes multiple telescopic hoses, a distributor, a vacuum pump, and an adsorption net. A distributor is fixedly installed on the inner side of the lifting port. Telescopic hoses are fixedly installed on multiple output ports of the distributor. The other ends of the multiple telescopic hoses are fixedly connected to the same adsorption base. An adsorption net is detachably installed on the top of the adsorption base. A vacuum pump is fixedly installed on the inner wall of one side of the lifting port. The suction end of the vacuum pump is fixedly connected to the input port of the distributor.

[0018] By adopting the above technical solution, the negative pressure of the vacuum pump can be evenly distributed into multiple telescopic hoses through the distributor.

[0019] A further feature of this invention is that: one side of the adsorption base is an inclined surface; the top of the fixture base is provided with an extrusion groove; the extrusion groove is connected to the lifting port; an extrusion metal block is slidably installed on the bottom inner wall of the extrusion groove; the inclined surface of the extrusion metal block abuts against the inclined surface of the adsorption base; two linkage protrusions are provided on the inclined surface of the extrusion metal block; two linkage grooves are provided on the inclined surface of the adsorption base; the two linkage protrusions are respectively adapted to the corresponding linkage grooves; a drive groove is provided inside the fixture base; an electric push rod is fixedly installed on the bottom inner wall of the drive groove; and the output end of the electric push rod is fixedly connected to the extrusion metal block.

[0020] By adopting the above technical solution, it is convenient to move the extruded metal block by driving the electric push rod.

[0021] A further feature of this invention is that the mechanical clamp assembly includes two threaded sliders, a forward and reverse threaded ball screw, a dustproof rubber sleeve, and two rubber clamping blocks. The top of the mechanical support has a sliding opening, and two threaded sliders are slidably installed on the inner side of the sliding opening. Rubber clamping blocks are fixedly installed on the bottom of each of the two threaded sliders. A forward and reverse threaded ball screw is rotatably installed on the inner wall of one side of the sliding opening. A dustproof rubber sleeve is fitted on the outer side of the forward and reverse threaded ball screw, and the two threaded sliders are threaded onto the same forward and reverse threaded ball screw.

[0022] By adopting the above technical solution, two threaded sliders can be driven to move closer to each other by a ball screw with positive and negative teeth.

[0023] A further feature of this invention is that a motor slot is provided inside the mechanical support, and a servo motor is fixedly installed on the bottom inner wall of the motor slot. The output shaft of the servo motor is fixedly connected to a forward and reverse toothed ball screw.

[0024] By adopting the above technical solution, a servo motor can be used to drive the forward and reverse toothed ball screws to rotate.

[0025] This application includes at least one of the following beneficial technical effects: Through the set clamping mechanism, the FA fiber array can be vacuum adsorbed and mechanically clamped simultaneously. Vacuum adsorption fixes the FA with uniform negative pressure, avoiding stress deformation of rigid clamping, protecting the brittle substrate and fiber. In addition, the rubber clamping block buffers the FA fiber array to limit its displacement, taking into account both positioning accuracy and damage prevention. Furthermore, the disc spring and rubber spring can effectively absorb external vibrations, avoiding relative displacement between the fiber end face and the test optical path caused by vibration, ensuring micron-level alignment stability, reducing test data fluctuations, and enhancing the environmental adaptability of the equipment. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a three-dimensional structural diagram of a FA fiber array detection fixture proposed in this utility model;

[0028] Figure 2 This is a three-dimensional cross-sectional view of a FA fiber array detection fixture proposed in this utility model.

[0029] Figure 3 This is a three-dimensional cross-sectional view of the disc spring and rubber spring of the FA fiber array detection fixture proposed in this utility model.

[0030] Figure 4 This is a three-dimensional structural diagram of the vacuum adsorption component of the clamping mechanism of a FA fiber array detection fixture proposed in this utility model.

[0031] Figure 5 This is a three-dimensional cross-sectional view of the mechanical clamping assembly of the clamping mechanism for a FA fiber array testing fixture proposed in this utility model.

[0032] In the diagram, 1. Fixture base; 2. FA fiber array body; 3. Buffer base; 4. Buffer port; 5. Connecting steel plate; 6. Permanent magnet damper; 7. Disc spring; 8. Rubber spring; 9. Polyurethane buffer block; 10. Buffer rubber plate; 11. Adsorption base; 12. Telescopic hose; 13. Diverter; 14. Vacuum pump; 15. Adsorption net; 16. Extruded metal block; 17. Electric push rod; 18. Mechanical support; 19. Threaded slider; 20. Positive and negative thread ball screw; 21. Servo motor; 22. Dustproof rubber sleeve; 23. Rubber clamping block. Detailed Implementation

[0033] Reference Figure 1-5 A FA fiber array testing fixture includes a fixture base 1, a lifting port on the top of the fixture base 1, a clamping mechanism on the top of the fixture base 1, an FA fiber array body 2 placed on the top of the fixture base 1, and the clamping mechanism used to clamp the FA fiber array body 2; two buffer bases 3 are fixedly installed on the bottom of the fixture base 1, and connecting steel plates 5 are fixedly installed on the inner side of the two buffer bases 3, and the tops of the two connecting steel plates 5 are fixedly connected to the bottom of the same fixture base 1.

[0034] In this embodiment, polyurethane buffer blocks 9 are fixedly installed on the inner side of both buffer bases 3. Multiple buffer openings 4 are opened at the bottom of both polyurethane buffer blocks 9. Disc springs 7 are provided on the inner side of the multiple buffer openings 4 to avoid damage to the FA fiber array body 2 by rigid impact and extend service life.

[0035] In this embodiment, multiple permanent magnet dampers 6 are fixedly installed at the bottom of both connecting steel plates 5, and the tops of multiple disc springs 7 are fixedly connected to the bottoms of the corresponding permanent magnet dampers 6. The permanent magnet dampers 6 cooperate with the disc springs 7 and rubber springs 8 to reduce the risk of system resonance and improve overall stability.

[0036] In this embodiment, buffer plates 10 are fixedly installed on the bottom of both polyurethane buffer blocks 9, and the other ends of multiple disc springs 7 are fixedly connected to the top of the corresponding buffer plates 10 to reduce the amplitude of vibration transmitted to the FA fiber array body 2 and ensure the alignment accuracy during detection.

[0037] In this embodiment, multiple rubber springs 8 are fixedly installed on the top of each of the two buffer rubber plates 10. The multiple rubber springs 8 are located inside the corresponding disc springs 7. The other end of the multiple rubber springs 8 is fixedly connected to the bottom of the corresponding permanent magnet damper 6. From low-frequency small vibrations to instantaneous large impacts, the full-frequency energy absorption is achieved through the complementary characteristics of different materials and structures.

[0038] In this embodiment, the clamping mechanism includes an adsorption base 11 and two mechanical supports 18. The adsorption base 11 is slidably installed on the inner side of the lifting port. The adsorption base 11 is provided with a vacuum adsorption component. Two mechanical supports 18 are fixedly installed on the top of the fixture base 1. Both mechanical supports 18 are provided with mechanical clamping components. The vacuum adsorption component and the mechanical clamping component are combined and limited in a way that can effectively make up for the shortcomings of a single mechanical clamp.

[0039] In this embodiment, the vacuum adsorption assembly includes multiple telescopic hoses 12, a distributor 13, a vacuum pump 14, and an adsorption net 15. The distributor 13 is fixedly installed on the inner side of the lifting port, and multiple telescopic hoses 12 are fixedly installed on multiple output ports of the distributor 13. The other ends of the multiple telescopic hoses 12 are fixedly connected to the same adsorption base 11. The adsorption net 15 is detachably installed on the top of the adsorption base 11. The vacuum pump 14 is fixedly installed on the inner wall of one side of the lifting port. The suction end of the vacuum pump 14 is fixedly connected to the input port of the distributor 13. The negative pressure of the vacuum pump 14 can be evenly distributed to the multiple telescopic hoses 12 through the distributor 13.

[0040] In this embodiment, one side of the adsorption base 11 is an inclined surface, and the top of the fixture base 1 is provided with an extrusion groove, which is connected to the lifting port. An extrusion metal block 16 is slidably installed on the bottom inner wall of the extrusion groove. The inclined surface of the extrusion metal block 16 abuts against the inclined surface of the adsorption base 11. Two linkage protrusions are provided on the inclined surface of the extrusion metal block 16, and two linkage grooves are provided on the inclined surface of the adsorption base 11. The two linkage protrusions are respectively adapted to the corresponding linkage grooves. A drive groove is provided inside the fixture base 1, and an electric push rod 17 is fixedly installed on the bottom inner wall of the drive groove. The output end of the electric push rod 17 is fixedly connected to the extrusion metal block 16, so as to facilitate the movement of the extrusion metal block 16 by the electric push rod 17.

[0041] In this embodiment, the mechanical clamp assembly includes two threaded sliders 19, a forward and reverse threaded ball screw 20, a dustproof rubber sleeve 22, and two rubber clamping blocks 23. The top of the mechanical bracket 18 has a sliding opening, and two threaded sliders 19 are slidably installed on the inner side of the sliding opening. Rubber clamping blocks 23 are fixedly installed on the bottom of each of the two threaded sliders 19. A forward and reverse threaded ball screw 20 is rotatably installed on the inner wall of one side of the sliding opening. A dustproof rubber sleeve 22 is sleeved on the outer side of the forward and reverse threaded ball screw 20. The two threaded sliders 19 are threaded onto the same forward and reverse threaded ball screw 20. The forward and reverse threaded ball screw 20 can drive the two threaded sliders 19 to move closer to each other.

[0042] In this embodiment, a motor slot is provided inside the mechanical support 18, and a servo motor 21 is fixedly installed on the bottom inner wall of the motor slot. The output shaft of the servo motor 21 is fixedly connected to the forward and reverse tooth ball screw 20, so that the servo motor 21 can drive the forward and reverse tooth ball screw 20 to rotate.

[0043] Working Principle: When inspecting the FA fiber array body 2, the operator places the FA fiber array body 2 on the fixture base 1, and then activates the clamping mechanism to limit and fix the FA fiber array body 2. First, the electric push rod 17 is activated, which drives the extrusion metal block 16 to move. The extrusion metal block 16 extrudes the adsorption base 11, which is slidably installed inside the lifting port. Therefore, the extrusion metal block 16 extrudes the adsorption base 11, causing it to rise and fall. After the adsorption base 11 rises and its top adsorption net 15 comes into contact with the fiber part of the FA fiber array body 2, the vacuum pump 14 is activated. The vacuum pump 14 generates negative pressure, which is evenly delivered to multiple telescopic hoses 12 through the distributor 13. The multiple telescopic hoses 12 deliver negative pressure to the surface of the adsorption base 11, making the fiber part of the FA fiber array body 2 tightly adhere to the adsorption net 15. At the same time, two servo motors 21 are activated, driving the corresponding positive and negative tooth ball screws 20 to rotate. The rotation of the two positive and negative tooth ball screws 20 drives... The two corresponding threaded sliders 19 move, and the two threaded sliders 19 on the same mechanical support 18 move closer to each other, causing the corresponding rubber clamping blocks 23 to move closer to each other, clamping the FA fiber array body 2 and completing the limiting and fixing of the FA fiber array body 2. When there is vibration in the surrounding environment, the vibration or impact of the ground first acts on the buffer rubber plate 10, which initially absorbs low-frequency, small-amplitude energy through elastic deformation. Then, the polyurethane buffer block 9 further buffers the subsequent impact force and disperses the stress. At the same time, the rubber spring 8 uses its high elasticity and damping characteristics to attenuate continuous vibration and suppress resonance, while the disc spring 7 bears a large instantaneous load with axial elastic deformation, providing a balance between rigid support and buffering. The permanent magnet damper 6 generates eddy current damping through the action of the magnetic field, dissipating the remaining vibration energy. Finally, the connecting steel plate 5 transmits the processed stabilizing force to the fixture base 1, thereby reducing the vibration transmitted to the FA fiber array body 2, ensuring the alignment accuracy during testing, enhancing the stability and practicality of the equipment, and improving its environmental adaptability.

[0044] The technological advancements of this invention compared to existing technologies are as follows: it can simultaneously perform vacuum adsorption and mechanical clamping on the FA fiber array body 2. Vacuum adsorption fixes the FA fiber array body 2 with uniform negative pressure, avoiding stress deformation caused by rigid clamping, protecting the brittle substrate and optical fiber. Furthermore, the rubber clamping block 23 provides buffer contact to limit the displacement of the FA fiber array body 2, balancing positioning accuracy and damage prevention. Additionally, the disc spring 7 and rubber spring 8 effectively absorb external vibrations, preventing relative displacement between the fiber end face and the test optical path caused by vibration, ensuring micron-level alignment stability, reducing fluctuations in test data, and enhancing the environmental adaptability of the equipment.

[0045] The foregoing has provided a detailed description of a FA fiber optic array testing fixture. Specific embodiments have been used to illustrate the principles and implementation methods of this application. These embodiments are merely illustrative and are intended to aid in understanding the method and core concepts of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of this application.

Claims

1. A FA fiber optic array testing fixture, characterized in that, Includes a fixture base (1), the top of which is provided with a lifting port, the top of which is provided with a clamping mechanism, and the top of which is placed a FA fiber array body (2). The clamping mechanism is used to clamp the FA fiber array body (2). Two buffer bases (3) are fixedly installed at the bottom of the fixture base (1). Connecting steel plates (5) are fixedly installed on the inner side of the two buffer bases (3). The top of the two connecting steel plates (5) is fixedly connected to the bottom of the same fixture base (1).

2. The FA fiber array testing fixture according to claim 1, characterized in that: Polyurethane buffer blocks (9) are fixedly installed on the inner side of both buffer bases (3). Multiple buffer openings (4) are opened at the bottom of both polyurethane buffer blocks (9). Disc springs (7) are provided on the inner side of the multiple buffer openings (4).

3. The FA fiber optic array testing fixture according to claim 2, characterized in that: Multiple permanent magnet dampers (6) are fixedly installed on the bottom of the two connecting steel plates (5), and the tops of multiple disc springs (7) are fixedly connected to the bottoms of the corresponding permanent magnet dampers (6).

4. The FA fiber optic array testing fixture according to claim 3, characterized in that: Both polyurethane buffer blocks (9) have a buffer plate (10) fixedly installed at their bottoms, and the other ends of multiple disc springs (7) are fixedly connected to the top of the corresponding buffer plate (10).

5. The FA fiber array testing fixture according to claim 4, characterized in that: Multiple rubber springs (8) are fixedly installed on the top of the two buffer rubber plates (10). The multiple rubber springs (8) are located inside the corresponding disc springs (7). The other end of the multiple rubber springs (8) is fixedly connected to the bottom of the corresponding permanent magnet damper (6).

6. The FA fiber optic array testing fixture according to claim 1, characterized in that: The clamping mechanism includes an adsorption base (11) and two mechanical supports (18). The adsorption base (11) is slidably installed on the inner side of the lifting port. The adsorption base (11) is provided with a vacuum adsorption component. Two mechanical supports (18) are fixedly installed on the top of the fixture base (1). Both mechanical supports (18) are provided with mechanical clamping components.

7. The FA fiber array testing fixture according to claim 6, characterized in that: The vacuum adsorption assembly includes multiple telescopic hoses (12), a distributor (13), a vacuum pump (14), and an adsorption net (15). A distributor (13) is fixedly installed on the inner side of the lifting port. Telescopic hoses (12) are fixedly installed on multiple output ports of the distributor (13). The other end of the multiple telescopic hoses (12) is fixedly connected to the same adsorption base (11). An adsorption net (15) is detachably installed on the top of the adsorption base (11). A vacuum pump (14) is fixedly installed on the inner wall of one side of the lifting port. The suction end of the vacuum pump (14) is fixedly connected to the input port of the distributor (13).

8. The FA fiber array testing fixture according to claim 7, characterized in that: One side of the adsorption base (11) is an inclined surface. The top of the fixture base (1) is provided with an extrusion groove. The extrusion groove is connected to the lifting port. An extrusion metal block (16) is slidably installed on the bottom inner wall of the extrusion groove. The inclined surface of the extrusion metal block (16) abuts against the inclined surface of the adsorption base (11). Two linkage protrusions are provided on the inclined surface of the extrusion metal block (16). Two linkage grooves are provided on the inclined surface of the adsorption base (11). The two linkage protrusions are respectively adapted to the corresponding linkage grooves. A drive groove is provided inside the fixture base (1). An electric push rod (17) is fixedly installed on the bottom inner wall of the drive groove. The output end of the electric push rod (17) is fixedly connected to the extrusion metal block (16).

9. A FA fiber optic array testing fixture according to claim 8, characterized in that: The mechanical clamp assembly includes two threaded sliders (19), a forward and reverse threaded ball screw (20), a dustproof rubber sleeve (22), and two rubber clamping blocks (23). The top of the mechanical bracket (18) is provided with a sliding opening. Two threaded sliders (19) are slidably installed on the inner side of the sliding opening. Rubber clamping blocks (23) are fixedly installed on the bottom of the two threaded sliders (19). A forward and reverse threaded ball screw (20) is rotatably installed on the inner wall of one side of the sliding opening. A dustproof rubber sleeve (22) is sleeved on the outer side of the forward and reverse threaded ball screw (20). The two threaded sliders (19) are threaded onto the same forward and reverse threaded ball screw (20).

10. A FA fiber optic array testing fixture according to claim 9, characterized in that: The mechanical support (18) has a motor slot inside, and a servo motor (21) is fixedly installed on the bottom inner wall of the motor slot. The output shaft of the servo motor (21) is fixedly connected to the forward and reverse toothed ball screw (20).

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