An integrated method and tooling for precise fiber stripping and online strength testing.

Abstract

This invention discloses an integrated method and tooling for precise fiber stripping and online strength testing of optical fibers, relating to the field of optical fiber device manufacturing and testing technology. The method includes: fixing the optical fiber to a dedicated tooling; pushing the tooling so that its first limiting part abuts against the stripping fixture of a fiber stripping machine, mechanically determining the stripping length and performing the stripping; transferring the tooling to an integrated testing device without disassembly, applying standardized bending stress to the bare fiber; and determining the quality based on the fracture condition. The tooling includes a base with a first limiting part and a mounting groove, an assembly block with a groove, and a clamping block with a second limiting part. The arc-shaped surfaces of the two limiting parts restrict the bending amount. This invention fundamentally eliminates the influence of equipment accuracy on the stripping length through mechanical limiting, achieves online non-destructive full inspection of micro-cracks through standardized bending stress, and completes two processes in a single clamping operation through the tooling, significantly improving the accuracy, efficiency, and reliability of optical fiber connector manufacturing.

Description

Technical Field

[0001] This invention relates to the field of optical fiber device manufacturing and testing technology, and in particular to an integrated method and tooling for precise fiber stripping and online strength testing of optical fibers. Background Technology

[0002] Fiber optic connectors are core passive components in optical communication networks, and their manufacturing quality directly determines the stability of optical signal transmission and system reliability. In the production of fiber optic connectors, accurately stripping the fiber coating and ensuring the bare fiber remains undamaged are two key process steps, both of which jointly determine the quality of subsequent fusion splicing or termination. Currently, the industry commonly uses dedicated fiber stripping machines for coating removal and evaluates the stripping quality through post-production sampling inspection. However, in existing technologies, the stripping length control relies on the equipment's feed accuracy, quality inspection mostly relies on visual inspection or offline tensile testing, and the stripping and inspection processes are physically and logically separated, leading to low production efficiency and lagging quality control.

[0003] The existing technology mainly has the following problems: 1. The accuracy of fiber stripping length relies excessively on the mechanical precision of the fiber stripping machine. Equipment wear, calibration drift, and human factors can all introduce errors, and high-precision equipment has high investment costs. 2. The quality inspection methods are outdated and non-quantitative. Visual inspection is highly subjective, and offline tensile testing is destructive, making it impossible to achieve 100% full inspection. Furthermore, it is difficult to detect micron-level microcracks caused by tool defects or improper operation, which are the main hidden dangers for subsequent fiber breakage. 3. The fiber stripping and strength testing processes are disconnected, requiring the product to be disassembled, transferred, and re-clamped. The process flow time is long, making it impossible to establish a real-time feedback loop from fiber stripping parameters to strength results. Furthermore, multiple clamping operations will increase additional positioning errors.

[0004] Therefore, there is an urgent need to develop a technical solution and its implementation tooling that integrates precision mechanical positioning with online bending stress detection. This solution aims to fundamentally eliminate the influence of equipment accuracy on fiber stripping length through the mechanical positioning principle, achieve instant non-destructive screening of microcracks through standardized bending stress, and complete the fiber stripping and detection processes in one clamping operation through the tooling. This will improve the accuracy, efficiency, and reliability of fiber optic connector manufacturing. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an integrated method and tooling for precise fiber stripping and online strength detection of optical fibers, so as to solve the problems existing in the background art.

[0006] This invention provides the following technical solution: an integrated method and tooling for precise fiber stripping and online strength testing, comprising the following steps: S1. Fix the optical fiber product to be processed onto the fixture; S2. Push the fixture containing the optical fiber product into the working area of ​​the fiber stripper; The tooling is pushed so that it makes physical contact with and abuts against the fixed blade base or absolute reference surface of the fiber stripper, thereby mechanically determining the fiber stripping length; Perform the fiber stripping operation to remove the fiber coating and form bare fiber segments; S3. Transfer the stripped tooling and the optical fiber product directly to the integrated testing equipment without disassembling them; The tooling is installed on the integrated testing equipment, so that the trigger interface of the equipment automatically triggers the sensor of the integrated testing equipment. The sensor signal activates the actuator of the integrated detection device, which applies standardized bending stress to the bare fiber segment according to a preset stroke, speed, and point of application. S4. Determine whether the fiber stripping quality is qualified based on the fracture condition of the bare fiber segment under the standardized bending stress.

[0007] Preferably, in step S2, the distance from the working surface of the precision mechanical limiting part to the optical fiber fixing point is a preset fiber stripping length, and the accuracy of the fiber stripping length is determined by the processing accuracy of the tooling.

[0008] Preferably, the standardized bending stress in step S3 is a single or multiple reciprocating bending stress bar.

[0009] Preferably, the quality determination in step S4 is as follows: if the bare fiber segment does not break, the fiber stripping quality is deemed acceptable; if the bare fiber segment breaks, the fiber stripping process is deemed to have caused damage, and the product is deemed unacceptable.

[0010] Preferably, the quality determination in step S4 is performed by visual inspection or fiber optic transmission inspection.

[0011] A fixture for precise fiber stripping and online strength testing includes: A base for mounting on a fiber stripper and / or integrated testing equipment, comprising a first limiting part for abutting against the fiber stripper to determine the stripping length; The assembly block is detachably assembled on one end of the base, and its top surface has a groove for assembling optical fibers. The clamping block is detachably assembled at the other end of the base and includes a second limiting part, which cooperates with the first limiting part to clamp the end of the optical fiber to be tested. The first limiting part and the second limiting part each have an arc-shaped surface on their opposite surfaces, and the two arc-shaped surfaces are used to limit the amount of upward and downward bending of the optical fiber.

[0012] Preferably, the base is provided with a first gasket on the top surface of one side of the first limiting part, and the clamping block is provided with a second gasket on the bottom surface of one side of the second limiting part. The first gasket and the second gasket cooperate to clamp and fix the optical fiber.

[0013] Preferably, the base has two protrusions located between the second pad and the first limiting part, the two protrusions forming a groove for the optical fiber to pass through, the two protrusions abutting one end of the second limiting part, and a magnetic element for adsorbing the second limiting part is provided on one side of the base located on the second pad.

[0014] Preferably, a positioning groove is also provided on the base on the other side of the second pad, and a positioning block adapted to the positioning groove is provided on one side of the second limiting part. When the clamping block cooperates with the base to clamp and fix the optical fiber, the positioning hole is inserted into the positioning groove.

[0015] Preferably, the top surface of the base is provided with a sliding groove for slidingly mounting the assembly block, and the bottom surface of the base is provided with a mounting groove for assembling with a fiber stripping machine and / or integrated testing equipment.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention adopts a positioning method in which a precision mechanical limiting part is in solid contact with the reference surface of the fiber stripping machine. The fiber stripping length is determined by the tooling machining accuracy, rather than the feed accuracy of the fiber stripping machine. Compared with the existing technology that relies on the accuracy of the equipment servo system and transmission mechanism, this invention effectively avoids the influence of factors such as equipment wear, calibration drift, and human operation error on the fiber stripping length, thereby improving the fiber stripping length accuracy to the micron level. Moreover, it eliminates the need for frequent equipment calibration and maintenance, reducing the investment and maintenance costs of high-precision fiber stripping equipment. 2. This invention immediately transfers the fiber to an integrated testing device via tooling after the fiber stripping process. The device's trigger interface automatically triggers the sensor, and the actuator applies standardized bending stress to the bare fiber. The quality is determined by a binary result of breakage / non-breakage. Compared with the subjective and delayed methods of post-processing sampling and visual inspection in existing technologies, this invention achieves 100% full inspection. Microcracks are instantly revealed under standardized stress. The inspection process is non-destructive, fast, and objective, effectively eliminating products with potential breakage risks and significantly improving the long-term reliability of fiber optic connectors. 3. This invention uses tooling as a physical carrier and information interface, enabling two processes to be completed in a single clamping. After fiber stripping, the fiber product does not need to be disassembled or re-clamped; it can be directly transferred to the testing equipment along with the tooling to automatically trigger the testing process. Compared with the existing technology that physically separates the two processes and requires multiple clamping, this invention eliminates the transfer time between processes and clamping positioning errors, significantly improving the efficiency of a single person and a single machine. At the same time, it establishes a real-time feedback closed loop from fiber stripping parameters to strength results, providing data support for process optimization. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the tooling of the present invention.

[0018] Figure 2 This is an exploded view of the tooling of the present invention.

[0019] Figure 3 This is a three-dimensional schematic diagram of the tooling and fiber stripping fixture assembly of the fiber stripping machine of the present invention.

[0020] Figure 4 This is a side view of the tooling and fiber stripping fixture assembly of the fiber stripping machine of the present invention.

[0021] Figure 5 This is a three-dimensional schematic diagram of the tooling and testing equipment assembly of the present invention.

[0022] Figure 6 This is a schematic diagram of the drive unit and swing arm of the present invention.

[0023] Figure 7 This is a side view of the tooling and testing equipment assembly of the present invention.

[0024] The reference numerals in the attached drawings are as follows: 1. Base; 11. First limiting part; 12. Positioning groove; 13. Protrusion; 14. Magnetic component; 15. First gasket; 16. Slide groove; 17. Mounting groove; 2. Assembly block; 21. Groove; 3. Clamping block; 31. Second limiting part; 32. Positioning block; 33. Second gasket; 4. Fiber stripping fixture; 5. Testing equipment; 51. Fixed seat; 52. Swing arm; 53. Guide groove; 54. Drive unit. Detailed Implementation

[0025] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0026] Example 1

[0027] like Figure 1-7 As shown, this invention provides an integrated method for precise fiber stripping and online strength testing. This method seamlessly integrates the fiber stripping process and the online strength testing process using tooling, achieving the technological goal of completing both processes in a single setup. The integrated method includes the following steps: S1. Clamping and positioning The optical fiber product to be processed is fixed onto the fixture. The fixture includes a base 1, an assembly block 2, and a clamping block 3. Specifically, the optical fiber is placed in the groove 21 on the top surface of the assembly block 2. The width of the groove 21 is adapted to the outer diameter of the optical fiber to ensure accurate positioning of the optical fiber in the radial direction. Then, the clamping block 3 is assembled onto the other end of the base 1, so that the second limiting part 31 cooperates with the first limiting part 11, and the end of the optical fiber to be tested is clamped and fixed by the first gasket 15 and the second gasket 33. The first gasket 15 and the second gasket 33 are made of elastic materials, such as rubber or silicone, which can protect the surface of the optical fiber from clamping damage and provide sufficient clamping force to prevent axial displacement of the optical fiber during stripping and testing.

[0028] S2. Mechanically limited fiber stripping The fixture containing the optical fiber product is pushed into the working area of ​​the fiber stripper. The fiber stripper has a fiber stripping fixture 4, which serves as the fixed blade base or absolute reference surface of the fiber stripper, and as the absolute reference for the stripping length.

[0029] The tooling is pushed so that the first limiting part 11 of its base 1 abuts against one side of the fiber stripping fixture 4 of the fiber stripping machine, resulting in physical contact and tight clamping. Since the fiber stripping length is determined by the mechanical structure of the tooling, rather than controlled by the feed system of the fiber stripping machine, the influence of equipment precision factors such as the resolution of the fiber stripping machine's servo motor, the clearance of the transmission mechanism, and the wear of the guide rail on the fiber stripping length is completely eliminated. At the same time, the influence of human factors such as the operator's pushing speed and stopping position is also eliminated.

[0030] When the first limiting part 11 is pressed against one side of the fiber stripping fixture 4, the fiber stripping machine is started. The blade of the fiber stripping machine performs the fiber stripping operation in a fixed position, stripping the fiber coating layer to form a bare fiber segment.

[0031] S3. Online bending strength testing The stripped fiber fixture, along with the fiber optic product, is transferred directly to the integrated testing equipment 5 without disassembly. The integrated testing equipment 5 includes a mounting base 51, a swing arm 52, a guide groove 53, and a drive unit 54.

[0032] The tooling is mounted onto the mounting base 51 of the integrated testing equipment 5 via the mounting slot 17. The mounting base 51 is equipped with a guide rail or positioning structure that matches the mounting slot 17, enabling rapid positioning and fixation of the tooling. At this time, the tooling comes into mechanical contact or approaches the sensor of the integrated testing equipment 5, automatically triggering the sensor to generate an electrical signal.

[0033] The sensor signal is transmitted to the control unit of the integrated detection device 5, and the control unit starts the drive unit 54 according to the preset program. The drive unit 54 is an electric push rod, cylinder or electromagnetic drive device, and its output end is connected to the swing arm 52. The drive unit 54 drives the swing arm 52 to reciprocate up and down in the guide groove 53. The guide groove 53 provides precise guidance and limit for the swing arm 52, ensuring that the movement trajectory of the swing arm 52 is stable and controllable.

[0034] The swing arm 52 descends according to the preset stroke and speed, acting on the midpoint or a specific position of the bare fiber segment, bending the bare fiber segment and applying standardized bending stress.

[0035] The bending direction is limited by the arc-shaped surfaces of the first limiting part 11 and the second limiting part 31. The radius of curvature of the arc-shaped surface is designed according to the allowable bending radius of the bare fiber to prevent excessive bending from causing non-defective breakage. The bending action of the swing arm 52 cooperates with the limiting of the arc-shaped surface to ensure that the bending curvature is consistent in each test, thereby achieving standardization of bending stress.

[0036] S4. Quality Judgment The quality of fiber stripping is determined based on the fracture behavior of the bare fiber segments under standardized bending stress. The specific criteria are as follows: if no fracture occurs in the bare fiber segment, it indicates that no dangerous microcracks were generated during the stripping process, and the stripping quality is deemed acceptable, allowing the product to proceed to the next process. If a fracture occurs in the bare fiber segment, it indicates that microcracks were caused by tool defects or improper operation during the stripping process. Under standardized bending stress, these cracks propagate to fracture, and the product is deemed unacceptable and discarded.

[0037] Quality assessment can be performed by visually inspecting bare fiber segments for breakage, or by checking fiber optic transmission. This involves inputting test light into one end of the fiber and measuring the optical power at the other end. If the optical power is normal, the fiber is considered unbroken; if the optical power drops significantly or reaches zero, the fiber is considered broken. Fiber optic transmission inspection is more objective and accurate, and is suitable for automated production lines.

[0038] Example 2

[0039] The present invention also provides a tooling for implementing the above-described integration method, comprising a base 1, an assembly block 2, and a clamping block 3.

[0040] The base 1 serves as the main support for the tooling and is made of metal (such as aluminum alloy or stainless steel) through precision machining to ensure dimensional stability and machining accuracy. The bottom surface of the base 1 has a mounting groove 17, which has a T-shaped or dovetail-shaped cross-section. This groove is used to slide and engage with the corresponding guide rails on the fiber stripping fixture 4 of the fiber stripping machine and the fixed seat 51 of the integrated testing equipment 5, enabling rapid transfer, positioning, and fixation of the tooling between the fiber stripping machine and the testing equipment.

[0041] One end of the base 1 is provided with a first limiting part 11, which has an arc-shaped surface to limit the downward bending of the optical fiber. A first gasket 15 is provided on the top surface of the base 1 on one side of the first limiting part 11. The first gasket 15 is embedded in a groove in the base 1, and its upper surface is slightly higher than the top surface of the base 1 to provide elastic clamping force. Two protrusions 13 are also provided on the base 1, forming a groove between them. The width of the groove is slightly larger than the diameter of the optical fiber, for the passage of the optical fiber and radial limiting. The ends of the two protrusions 13 near the first limiting part 11 abut against a second limiting part 31 to limit the assembly position of the clamping block 3.

[0042] A magnetic element 14 is provided on the base 1 on the side of the first pad 15 away from the first limiting part 11. The magnetic element 14 is a permanent magnet or an electromagnet, used to attract the clamping block 3, provide clamping force and keep the clamping block 3 in a stable position during the detection process. A positioning groove 12 is also provided on the base 1. The positioning groove 12 is a rectangular groove or a circular hole, used to cooperate with the positioning block 32 on the clamping block 3 to achieve precise positioning of the clamping block 3.

[0043] The top surface of the base 1 is provided with a sliding groove 16, which is a T-shaped groove or a dovetail groove, extending along the length of the base 1 for sliding installation of the assembly block 2. The sliding groove 16 allows the position of the assembly block 2 to be adjusted according to the length of the optical fiber product, improving the versatility of the tooling.

[0044] Assembly block 2 is a replaceable modular structure made of plastic or lightweight metal, and slides into the groove 16 of base 1 via a slide rail. The top surface of assembly block 2 has a groove 21 with a V-shaped or U-shaped cross-section to stably support the optical fiber and prevent it from rolling. Assembly blocks 2 with corresponding grooves 21 can be replaced, enabling rapid tooling changeovers.

[0045] The clamping block 3 is a detachable assembly structure, including a second limiting part 31, a second gasket 33, and a positioning block 32. It also has an arc-shaped surface facing the first limiting part 11. This arc-shaped surface is the same as and symmetrically arranged with the arc-shaped surface of the first limiting part 11, and is used to limit the amount of upward or downward bending of the optical fiber during bending detection to prevent excessive bending.

[0046] The second gasket 33 is embedded in the bottom surface of the clamping block 3, opposite to the first gasket 15, and is made of the same material. When the clamping block 3 is assembled on the base 1, the magnet 14 attracts the clamping block 3, pressing the second gasket 33 and the first gasket 15 together to clamp and fix the optical fiber. The positioning block 32 protrudes from one side of the second limiting part 31 and is fitted into the positioning groove 12 on the base 1 to achieve precise positioning and anti-rotation of the clamping block 3.

[0047] Example 3

[0048] The working surface of the first limiting part 11 makes solid contact with one side of the fiber stripping fixture 4 of the fiber stripping machine, thus forming a mechanical hard limit on the stripping length. The fiber stripping fixture 4 is a fixed component of the fiber stripping machine and has a precisely machined reference plane. When the base 1 is pushed in along the guide rail of the fiber stripping fixture 4, the working surface of the first limiting part 11 finally fits against the reference plane of the fiber stripping fixture 4. At this time, the distance from the fiber fixing point to the fiber stripping cutter is the preset stripping length.

[0049] Since the working surface position of the first limiting part 11 is guaranteed by the tooling machining accuracy, and the distance to the fiber fixing point is a fixed value, the fiber stripping length is uniquely determined as long as the first limiting part 11 is pressed against the fiber stripping fixture 4, regardless of whether there is an error in the fiber stripping machine's feeding system. This mechanical limiting method changes the length accuracy control from equipment dependence to tooling dependence, and the machining accuracy of the tooling can be easily achieved at the micrometer level through precision manufacturing and remains stable over a long period. The fiber stripping fixture 4, as an inherent reference of the fiber stripping machine, can be used with the tooling of this invention without additional modification, reducing system modification costs.

[0050] The protrusion 13 or the sidewall of the positioning groove 12 on the base 1 constitutes the trigger interface of the equipment. When the tooling is installed on the fixed base 51 of the integrated testing equipment 5 through the mounting groove 17, the sidewall of the protrusion 13 or the positioning groove 12 makes mechanical contact or electromagnetic induction with the limit switch or proximity switch on the integrated testing equipment 5, generating a trigger signal. This trigger signal serves as the start command for the testing process, realizing the linkage between tooling installation and testing start, eliminating the need for manual operation of the testing start button, and improving testing efficiency and automation.

[0051] Upon receiving a trigger signal, the drive unit 54 starts, driving the swing arm 52 to move up and down along a precise trajectory within the guide groove 53. The guide groove 53 provides vertical guidance and horizontal limitation for the swing arm 52, ensuring that the bending point of the swing arm 52 is accurately located at the midpoint or a preset position of the bare fiber segment. A pressure head may be provided at the end of the swing arm 52. The pressure head is made of an elastic material or has a specific curvature to evenly distribute pressure and protect the surface of the bare fiber.

[0052] The arc-shaped surfaces of the first limiting part 11 and the second limiting part 31 constitute a bending limiting structure, which limits the maximum bending curvature of the bare fiber segment during bending detection. When the swing arm 52 descends to bend the bare fiber segment, the bare fiber segment bends to one side until it contacts the arc-shaped surface of the first limiting part 11 or the second limiting part 31. At this time, the bending curvature of the bare fiber segment is determined by the radius of curvature of the arc-shaped surface, the bending deflection is determined by the stroke of the swing arm 52, and the bending speed is determined by the movement speed of the drive unit 54.

[0053] By presetting the stroke and speed of the drive unit 54, as well as the radius of curvature of the arc surface, the bending stress can be standardized.

[0054] The design of mounting slot 17 allows the fixture to be quickly transferred between the fiber stripping jig 4 of the fiber stripping machine and the fixed base 51 of the integrated testing equipment 5, and the fiber optic product remains fixed on the fixture throughout the transfer process without disassembly or re-clamping. This direct transfer method without disassembly eliminates positioning errors introduced by multiple clamping, ensures consistency between the stripping position and the testing position, and significantly shortens the inter-process transfer time, realizing the physical integration and logical closed loop of the process chain.

[0055] Several points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0056] The above description is only a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. Any equivalent modifications or changes made by those skilled in the art based on the content disclosed in the present invention should be included within the scope of protection set forth in the claims.

Claims

1. An integrated method for precise fiber stripping and online strength detection, characterized in that, Includes the following steps: S1. Fix the optical fiber product to be processed onto the fixture; S2. Push the fixture containing the optical fiber product into the working area of ​​the fiber stripper; The tooling is pushed so that it makes physical contact with and abuts against the fixed blade base or absolute reference surface of the fiber stripper, thereby mechanically determining the fiber stripping length; Perform the fiber stripping operation to remove the fiber coating and form bare fiber segments; S3. Transfer the stripped tooling and the optical fiber product directly to the integrated testing equipment without disassembling them; The tooling is installed on the integrated testing equipment, so that the trigger interface of the equipment automatically triggers the sensor of the integrated testing equipment. The sensor signal activates the actuator of the integrated detection device, which applies standardized bending stress to the bare fiber segment according to a preset stroke, speed, and point of application. S4. Determine whether the fiber stripping quality is qualified based on the fracture condition of the bare fiber segment under the standardized bending stress.

2. The integrated method for precise fiber stripping and online strength detection according to claim 1, characterized in that: In step S2, the distance from the working surface of the precision mechanical limiting part to the optical fiber fixing point is the preset fiber stripping length, and the accuracy of the fiber stripping length is determined by the processing accuracy of the tooling.

3. The integrated method for precise fiber stripping and online strength detection according to claim 1, characterized in that: The standardized bending stress in step S3 is a single or multiple reciprocating bending stress bar.

4. The integrated method for precise fiber stripping and online strength detection according to claim 1, characterized in that: The quality determination in step S4 is as follows: if the bare fiber segment does not break, the fiber stripping quality is deemed acceptable; if the bare fiber segment breaks, the fiber stripping process is deemed to have caused damage, and the product is deemed unacceptable.

5. The integrated method for precise fiber stripping and online strength detection according to claim 1, characterized in that: The quality assessment in step S4 is performed through visual inspection or fiber optic transmission inspection.

6. A fixture for precise fiber stripping and online strength testing, used in the integrated method for precise fiber stripping and online strength testing as described in any one of claims 1-5, characterized in that, include: A base for mounting on a fiber stripper and / or integrated testing equipment, comprising a first limiting part for abutting against the fiber stripper to determine the stripping length; The assembly block is detachably assembled on one end of the base, and its top surface has a groove for assembling optical fibers. The clamping block is detachably assembled at the other end of the base and includes a second limiting part, which cooperates with the first limiting part to clamp the end of the optical fiber to be tested. The first limiting part and the second limiting part each have an arc-shaped surface on their opposite surfaces, and the two arc-shaped surfaces are used to limit the amount of upward and downward bending of the optical fiber.

7. The fixture for precise fiber stripping and online strength testing according to claim 6, characterized in that: The base is provided with a first gasket on the top surface of one side of the first limiting part, and the clamping block is provided with a second gasket on the bottom surface of one side of the second limiting part. The first gasket and the second gasket cooperate to clamp and fix the optical fiber.

8. The fixture for precise fiber stripping and online strength testing according to claim 7, characterized in that: Two protrusions are provided on the base between the second pad and the first limiting part. The two protrusions form a groove for the optical fiber to pass through. The two protrusions abut against one end of the second limiting part. A magnetic component for adsorbing the second limiting part is provided on one side of the base on the second pad.

9. The fixture for precise fiber stripping and online strength testing according to claim 8, characterized in that: A positioning groove is also provided on the base on the other side of the second pad, and a positioning block adapted to the positioning groove is provided on one side of the second limiting part. When the clamping block cooperates with the base to clamp and fix the optical fiber, the positioning hole is inserted into the positioning groove.

10. The fixture for precise fiber stripping and online strength testing according to claim 6, characterized in that: The top surface of the base is provided with a sliding groove for sliding the assembly block, and the bottom surface of the base is provided with a mounting groove for assembling with a fiber stripping machine and / or integrated testing equipment.

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