Optical fiber precise rotary clamping device and cold grinding platform of optical fiber lens

Abstract

The utility model provides an optical fiber precise rotation clamping device which comprises a fixing frame, one side of the fixing frame is provided with an electric rotation sliding table and an optical fiber clamping arm fixed on the output side of the electric rotation sliding table, and one side of the optical fiber clamping arm is connected with a guide pipe in an inserted mode. According to the precise rotary clamping device for the optical fiber, the guide block is arranged on the optical fiber clamping arm, and the tapered channel is formed between the guide block and the optical fiber clamping arm, so that the guide pipe is conveniently fixed, and the optical fiber passes through the guide pipe and then is transited in the optical fiber channel through the tapered channel. The utility model further provides a cold grinding platform of the optical fiber lens, and the cold grinding platform comprises the optical fiber precise rotary clamping device, and further comprises a base plate, and a cold grinding unit, a light source unit, a CCD camera observation unit and a light spot online monitoring unit which are arranged at the top of the base plate. According to the cold grinding platform for the optical fiber lens, the optical fiber end cannot be eccentric in the grinding and polishing process through the high-precision limiting and end adjusting effects of the optical fiber precise rotary clamping device on the optical fiber.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber lens preparation, in particular to an optical fiber precision rotating clamping device and a cold grinding platform for a tapered optical fiber lens. Background Art

[0002] In the field of optics and fiber-optic communications, tapered lens fiber is an important optical component. It is mainly suitable for coupling light-emitting chips with circular or nearly circular output beams. It is a fiber that is reprocessed based on ordinary optical fiber. It is made by grinding the end of the ordinary optical fiber into a cone and preparing a lens with a certain curvature at the tip of the cone to make a tapered lens fiber.

[0003] The eccentricity of the cone tip of the tapered optical fiber and the uniformity of the lens will have a significant impact on the optical performance of the tapered optical fiber. In order to achieve the goal of low eccentricity and high uniformity, it is necessary to keep the optical fiber clamped and rotate along the axis with high precision during the processing. Therefore, the high-precision electric optical fiber rotation fixture plays a vital role in the preparation of tapered optical fibers. However, the optical fiber rotation fixture of the existing tapered optical fiber lens cold grinding platform cannot ensure that the optical fiber is coaxial with the rotation center. When the optical fiber is ground, the eccentricity between the optical fiber and the rotation center occurs, so the production accuracy of the tapered optical fiber is low and cannot meet the needs of high-precision processing.

[0004] The optical fiber grinder with the prior art publication number CN215547797U has a clamping mechanism for the optical fiber, but its clamping method is achieved by clamping the fixed block and the clamping button together. In addition, the clamping force of the clamping button is given by the reverse thrust of the elastic member. Then, the vibration generated during the optical fiber grinding process acts on the clamping button and the elastic member, and then the elasticity of the elastic member changes with the vibration, resulting in a change in the pressure applied to the optical fiber, which is prone to eccentricity.

[0005] The prior art publication number is CN210081394U, which is an automatic polishing device for a tapered optical fiber. In the prior art, a bearing sleeve is sleeved on the outside of a polishing shaft for penetrating the optical fiber, and the bearing sleeve is used to protect the polishing shaft and the optical fiber and to achieve coaxiality. However, the end of the optical fiber is restricted by a fiber chuck and its threaded installation at the end of the polishing shaft, so the end position of the optical fiber is restricted. Once the end of the optical fiber is eccentric with the optical fiber itself, it is difficult to adjust the optical fiber, which in turn affects the high uniformity of the tapered optical fiber lens.

[0006] Based on the above, the present application proposes an optical fiber precision rotating clamping device and a cold grinding platform for a tapered optical fiber lens to solve the problem of low eccentricity required for cold grinding of tapered optical fibers. Utility Model Content

[0007] The utility model provides an optical fiber precision rotating clamping device and a cold grinding platform for a tapered optical fiber lens, which solve the problems mentioned in the above background technology.

[0008] The technical solution of the utility model is achieved in this way:

[0009] The optical fiber precision rotating clamping device comprises a fixing frame, one side of which is provided with an electric rotating slide and an optical fiber clamping arm fixed on its output side, and one side of the optical fiber clamping arm is plugged with a guide tube;

[0010] The optical fiber clamping arm has a platform on one side away from the guide tube, a guide block covering the end of the guide tube is provided on the platform, and a clamping plate for pressing the optical fiber is also hinged on the platform;

[0011] The fixed frame is also provided with an optical fiber guide assembly, which includes a connecting arm and a manual slide arranged at its end. The manual slide is provided with a guide arm whose end corresponds to the end of the optical fiber clamping arm. A ceramic ferrule is provided on the side of the guide arm away from the manual slide.

[0012] Furthermore, a through optical fiber channel is provided on the optical fiber clamping arm, one section of the optical fiber channel has a large outer diameter, the other section has a small outer diameter, and the two sections are in a gradually contracting transition; the end of the optical fiber channel away from the electric rotating slide is outwardly expanded.

[0013] Furthermore, one side of the guide tube is inserted into the large outer diameter section of the optical fiber channel, and a needle tube and a trumpet tube are respectively provided on both sides of the guide tube; wherein the needle tube is located in the optical fiber channel, and the trumpet tube is located on the other side of the electric rotating slide.

[0014] Furthermore, a tapered groove is provided at a tapered portion of the guide block corresponding to the tapered shape of the optical fiber channel, and the tapered groove and the tapered shape of the optical fiber channel form a tapered channel.

[0015] Furthermore, a magnet is provided on the optical fiber clamping arm, the top of the magnet is flush with the platform and corresponds to a side of the clamping plate away from the hinge thereof, and the magnet and the clamping plate are magnetically attracted to each other.

[0016] Furthermore, the guide arm is provided with a fiber guide block on one side away from the manual slide, and the guide arm is provided with a fiber pressing block on one side of the fiber guide block.

[0017] Furthermore, the plane on one side of the optical fiber guide block is high, and the plane on the other side is low, a convex rib is provided between the high and low side planes, a plurality of V-shaped grooves are provided on the convex rib, and the V-shaped grooves extend to the high plane side of the optical fiber guide block.

[0018] Furthermore, the bottom of the optical fiber pressing block is placed on the high plane side of the optical fiber guide block; the optical fiber pressing block is provided with a swing arm, and the swing arm is hinged to an arm seat arranged on the guide arm.

[0019] Furthermore, it also includes an electric slide fixed to the bottom of the fixed frame, and the electric slide is a two-axis linear slide, namely an X-axis slide and a Z-axis slide.

[0020] The cold grinding platform of the optical fiber lens includes the optical fiber precision rotating clamping device, and also includes a substrate and a cold grinding unit, a light source unit, a CCD camera observation unit and a light spot online monitoring unit arranged on the top thereof; wherein the optical fiber precision rotating clamping device is arranged on one side of the substrate, and the cold grinding unit, the light source unit, the CCD camera observation unit and the light spot online monitoring unit are arranged on the other side of the substrate.

[0021] Beneficial effects of the technical solution provided by this application:

[0022] 1. The optical fiber precision rotary clamping device is provided with a guide block on the optical fiber clamping arm, so that a tapered channel is formed between the guide block and the optical fiber clamping arm to facilitate the fixing of the guide tube, so that the optical fiber passes through the guide tube and then transitions in the optical fiber channel through the tapered channel; in addition, the clamping plate on the optical fiber clamping arm is used to limit the position of the optical fiber on the platform, so as to ensure that the optical fiber is coaxial with the optical fiber clamping arm. At the same time, there is an optical fiber guide assembly at the end of the optical fiber clamping arm. After the optical fiber passes through the optical fiber guide assembly, the optical fiber end is adjusted by the condition of a manual slide table to ensure that the end of the optical fiber is coaxial with the optical fiber clamping arm.

[0023] 2. The cold grinding platform of the optical fiber lens cooperates with the optical fiber precision rotating clamping device to limit the optical fiber with high precision and the adjustable end, so that the optical fiber end will not be eccentric during the grinding and polishing process; in addition, even if the operation of the grinding disc transmits movement to the optical fiber, the optical fiber will not be eccentric due to the vibration of the movement due to the precise transition of the guide block and the limit protection of the clamping plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a partial schematic diagram of the optical fiber precision rotating clamping device of the utility model;

[0026] Figure 2 This is a partial explosion diagram of the optical fiber precision rotating clamping device of the utility model;

[0027] Figure 3 This is a schematic diagram of the optical fiber clamping arm of the utility model;

[0028] Figure 4 This is a schematic diagram of the optical fiber precision rotating clamping device of the utility model;

[0029] Figure 5 This is a schematic diagram of an optical fiber guide assembly according to Embodiment 1 of the present utility model;

[0030] Figure 6 This is a schematic diagram of an optical fiber guide assembly according to Embodiment 2 of the present utility model;

[0031] Figure 7 This is an exploded schematic diagram of an optical fiber guide assembly according to Embodiment 2 of the present utility model;

[0032] Figure 8 It is a partial exploded schematic diagram of an optical fiber guide assembly in Embodiment 2 of the present utility model;

[0033] Fig. 9 It is a schematic diagram of the cold grinding platform of the tapered optical fiber lens of the utility model.

[0034] In the figure:

[0035] 100 fixing frame, 110 electric rotating slide, 111 bearing seat, 120 optical fiber clamping arm, 121 guide block, 122 clamping plate, 123 optical fiber channel, 124 tapered channel, 125 magnet, 126 platform, 130 guide tube, 131 needle tube, 132 horn tube, 140 adapter seat, 141 optical fiber tray, 142 fiber coil limit seat, 143 flange adapter;

[0036] 200 optical fiber guide assembly, 210 connecting arm, 220 manual slide, 230 guide arm, 231 adapting groove, 232 convex rib, 240 ceramic ferrule, 250 optical fiber guide block, 251 convex rib, 251a slope, 252 V-shaped groove, 253 positioning block, 253a protruding step, 260 optical fiber pressing block, 260a wedge, 261 swing arm, 262 arm seat;

[0037] 300 electric slide, 400 substrate, 410 cold grinding unit, 420 light source unit, 430 CCD camera observation unit, 440 spot online monitoring unit. DETAILED DESCRIPTION

[0038] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] Example 1

[0040] Reference Figure 1-5The optical fiber precision rotating clamping device includes a fixed frame 100, one side of which is provided with an electric rotating slide 110 and an optical fiber clamping arm 120 fixed on its output side, and one side of the optical fiber clamping arm 120 is plugged with a guide tube 130; the fixed frame 100 is a T-shaped frame, specifically composed of two plate structures, one of which is flush with the horizontal line and can be used as a support; the other plate structure is arranged vertically with the plate structure, and is mainly used to connect the electric rotating slide 110 and the optical fiber clamping arm 120 and other structures. A through hole (not marked in the figure) is opened on the vertical plate, and the rotation center of the electric rotating slide 110 corresponds to the through hole. A bearing seat 111 is fixed to the electric rotating slide 110 by screws on the other side of the through hole, so that the electric rotating slide 110 can play the role of rotating power output on the fixed frame 100. The optical fiber clamping arm 120, as the name implies, is a component used to clamp the optical fiber. First, a positioning shaft tube 127 is provided on one side of the optical fiber clamping arm 120. One side of the positioning shaft tube 127 is provided inside the optical fiber clamping arm 120, and the other side extends to the inner side of the rotation center fixed to the electric rotary slide 110. Therefore, the positioning shaft tube 127 mainly plays the role of connecting with the electric rotary slide 110. In addition, the same side of the optical fiber clamping arm 120 and the extended end of the positioning shaft tube 127 is flush with the side of the electric rotary slide 110, ensuring that the electric rotary slide 110 can ensure stability in the process of transmitting the rotation force to the optical fiber clamping arm 120, and avoiding easy shaking due to poor connection tightness. A guide tube 130 is provided on the optical fiber clamping arm 120. The guide tube 130 is a guide member for protecting the optical fiber or providing a through channel. Specifically, the guide tube 130 is a side of the vertical plate that passes through the bearing seat 111, the rotation center of the electric rotary slide 110, and the positioning shaft tube 127 and then extends to the optical fiber clamping arm 120.

[0041] The guide tube 130 plays an early guiding role, while the fiber clamping arm 120 plays a later stabilizing role for the optical fiber. For details, see the following content: the fiber clamping arm 120 has a platform 126 on the side away from the guide tube 130, and a guide block 121 covering the end of the guide tube 130 is provided on the platform 126. A clamping plate 122 for pressing the optical fiber is also hinged on the platform 126; the difference between the platform 126 set in the fiber clamping arm 120 and the prior art is that a limiting component can be set on the platform 126 without affecting the guiding function of the optical fiber.

[0042] The platform 126 of the fiber clamping arm 120 is used as the working plane of the guide block 121 and the clamping plate 122. First, after the optical fiber extends from the guide tube 130 to the fiber clamping arm 120, in order to ensure the stability of the later guiding of the optical fiber, a through optical fiber channel 123 is opened on the fiber clamping arm 120. One section of the optical fiber channel 123 has a large outer diameter, and the other section has a small outer diameter, and the two sections are in a tapered transition. Then the optical fiber extends into the optical fiber channel 123 through the guide tube 130, and the node between the guide tube 130 and the optical fiber channel 123 is an eccentric node. In order to effectively ensure that the optical fiber can transition to the optical fiber channel 123, a tapered groove is provided at the tapered portion of the guide block 121 corresponding to the optical fiber channel 123, and the tapered groove and the tapered shape of the optical fiber channel 123 form a tapered channel 124. The gathering effect of the tapered channel 124 allows the optical fibers to converge into a line after extending from the guide tube 130 , thereby ensuring that the optical fibers are centrally located and that the optical fibers are always coaxial with the optical fiber clamping arm 120 .

[0043] In addition, in order to further optimize the coaxiality of the optical fiber, one section of the optical fiber channel 123 has a large outer diameter and the other section has a small outer diameter, and one side of the guide tube 130 is plugged into the large outer diameter section of the optical fiber channel 123. Because the optical fiber channel 123 is an integral optical fiber channel 123, whether it is a large outer diameter section or a small outer diameter section, the guide tube 130 is arranged at the large outer diameter section, which can ensure that the optical fiber extending from the guide tube 130 to the small outer diameter section is in the same straight line, thereby ensuring the purpose of concentric alignment of the optical fiber and the optical fiber clamping arm 120.

[0044] After the fiber clamping arm 120 completes the transition stabilization of the optical fiber through the guide block 121, the clamping plate 122 completes the stability of the optical fiber in the optical fiber channel 123. Specifically, the clamping plate 122 itself has a hinged connection with the fiber clamping arm 120, and can flip and move, and then can cover the optical fiber by flipping and swinging to achieve the purpose of limiting; in addition, in order to ensure that the clamping plate 122 has a good fit on the platform 126 of the fiber clamping arm 120, the bottom of the clamping plate 122 is flush with the platform 126, and can effectively align and fit with the platform 126 after flipping. In order to further increase the anti-loosening function of the clamping plate 122 and the platform 126, a magnet 125 is provided on the fiber clamping arm 120, and the top of the magnet 125 is flush with the platform 126 and corresponds to the side of the clamping plate 122 away from its hinge, and the magnet 125 and the clamping plate 122 are magnetically attracted. The magnet 125 can provide an adsorption force for the clamping plate 122, so as to prevent the clamping plate 122 from falling off after limiting the position of the optical fiber.

[0045] In addition, in order to ensure that the optical fiber can be effectively kept stable and not damaged between the clamp 122 and the optical fiber clamping arm 120, the depth of the optical fiber channel 123 can be set to be exactly the adaptation diameter of the optical fiber, or hard rubber or other accessories that can ensure that the optical fiber will not be crushed can be set at the position of the clamp 122 corresponding to the optical fiber channel 123. The specific selection can be made according to needs and will not be elaborated here.

[0046] In the above technical solution, a platform 126 is provided on the fiber clamping arm 120 in cooperation with the guide block 121 and the clamping plate 122 to guide and limit the optical fiber. Furthermore, in order to ensure that the end of the optical fiber can be coaxial with the fiber clamping arm 120 during the polishing process after extending out of the optical fiber channel 123, an optical fiber guide assembly 200 is also provided on the fixed frame 100. The optical fiber guide assembly 200 includes a connecting arm 210 and a manual slide 220 arranged at its end. The manual slide 220 is provided with a guide arm 230 whose end corresponds to the end of the fiber clamping arm 120. A ceramic ferrule 240 is provided on the side of the guide arm 230 away from the manual slide 220.

[0047] The connection arm 210 is mainly used to connect the optical fiber guide assembly 200. One end of the connection arm 210 is vertically connected to the fixed frame 100, and the end is on the same side as the electric rotary slide 120. The other end is connected to the manual slide 220. The manual slide 220 is a two-axis linear slide, which is an X-axis slide and a Y-axis slide. It can be used for adjustment of the optical fiber guide assembly 200. The specific working principle and structural distribution of the X-axis slide and the Y-axis slide have been disclosed in the field of industrial automation. They are not described in detail in this application, and the drive is only changed to a handwheel crank. A guide arm 230 is provided on the manual slide 220, and the end of the guide arm 230 corresponds to the end of the fiber clamping arm 120, so that the optical fiber extending from the optical fiber channel 123 of the optical fiber clamping arm 120 can cooperate with the end of the guide arm 230. Specifically, by providing a ceramic ferrule 240 at the end of the guide arm 230, the optical fiber can pass through the ceramic ferrule 240, and the ceramic ferrule 240 is used as a limiting component at the end of the optical fiber. The ceramic ferrule 240 is adjusted and configured to correspond to the optical fiber channel 123 by cooperating with the manual slide 220 on the guide arm 230, so that the end of the optical fiber can have the limitation of the protective component and will not be eccentric, which plays a key role in the stable polishing of the optical fiber.

[0048] In some embodiments, the end of the optical fiber channel 123 away from the electric rotary slide 110 is outwardly expanded. After the optical fiber is released from the optical fiber channel 123, it may be misaligned during the docking process with the optical fiber guide assembly 200. In order to ensure that the end of the optical fiber will not be cracked and damaged due to the transition of the misalignment, the outward expansion design ensures that the optical fiber can make a slight change in curvature after it is released from the optical fiber channel 123 to adapt to the ceramic ferrule 240 of the optical fiber guide assembly 200.

[0049] In some embodiments, one side of the guide tube 130 is inserted into the large outer diameter section of the optical fiber channel 123, and a needle tube 131 and a trumpet tube 132 are respectively provided on both sides of the guide tube 130; wherein the needle tube 131 is located in the optical fiber channel 123, and the trumpet tube 132 is located on the other side of the electric rotary slide 110. On the basis of the guide tube 130 providing guidance for the optical fiber, the needle tube 131 is used as a further protection mechanism before the pipeline is extended out, so that the guide tube 130 can also have a higher stability and balance effect during the rotation process. Because the port of the guide tube 130 is relatively large, it cannot be directly installed at the small outer diameter section of the optical fiber channel 123. In addition, the guide tube 130 can be more conveniently and quickly aligned with the optical fiber channel 123 through the needle tube 131, so that the optical fiber can be effectively concentric with the optical fiber channel 123. In addition, the configuration of the trumpet tube 132 is mainly to facilitate the optical fiber before entering the guide tube 130 . The trumpet tube 132 is configured to taper from large to small, so the optical fiber can enter through the outward expansion of the trumpet tube 132 before entering the guide tube 130 .

[0050] In some embodiments, the guide tube 130 has an adapter seat 140 on one side away from the fiber clamping arm 120. The adapter seat 140 mainly provides a placement platform for the optical fiber. In addition, the adapter seat 140 is sleeved at the end of the guide tube 130, and a fiber tray 141 is provided at the bottom thereof. The fiber tray 141 has a fiber stop ring 142, and the optical fiber can be wound around the fiber stop ring 142. In addition, a notch (not marked in the figure) is provided on the fiber stop ring 142, and the optical fiber can be limited by a rubber band or other elastic structure to the fiber tray 141, the fiber stop ring 142 and the notch. In addition, a flange adapter 143 is provided on the fiber tray 141, and a fiber connector can be installed to pass light to the optical fiber during spot monitoring.

[0051] Some embodiments further include an electric slide 300 fixed to the bottom of the fixed frame 100. The electric slide 300 is a two-axis linear slide, namely an X-axis slide and a Z-axis slide. The electric slide 300 is designed to provide an efficient displacement function for the optical fiber precision rotating clamping device. The optical fiber precision rotating clamping device can achieve the purpose of adjustment through the displacement of the X-axis and Z-axis of the electric slide 300.

[0052] Example 2

[0053] In Example 1, a ceramic ferrule 240 is provided on the optical fiber guide assembly 200 to provide a guiding function for the optical fiber. However, in order to provide versatility for optical fibers of different specifications, the technical solution is optimized in Example 2. For details, please refer to Figure 6-8The guide arm 230 is away from the optical fiber guide block 250 on one side of the manual slide 220, and the guide arm 230 is provided with an optical fiber pressing block 260 on one side of the optical fiber guide block 250. The optical fiber guide block 250 is mainly used to guide the end of the optical fiber, and the optical fiber pressing block 260 is mainly used to press and limit the optical fiber guided and fixed on the optical fiber guide block 250.

[0054] The plane of one side of the optical fiber guide block 250 is high, and the plane of the other side is low. A rib 251 is provided between the high and low planes. The rib 251 is provided with a plurality of V-grooves 252. The V-grooves 252 extend to the high plane side of the optical fiber guide block 250. The low plane side of the optical fiber guide block 250 is mainly to facilitate the bottom contour of the optical fiber to contact it and provide a platform for the optical fiber to be placed. The high plane side of the optical fiber guide block 250 is mainly to raise the platform, facilitate the adaptation of the rib 251 and provide the V-grooves 252. The V-grooves 252 on the high plane side of the optical fiber guide block 250 can just adapt to the width of the optical fiber. In addition, multiple V-grooves 252 can be provided to adapt to optical fibers of different sizes to achieve the purpose of versatility.

[0055] In some embodiments, the bottom of the optical fiber pressing block 260 is placed on the high plane side of the optical fiber guide block 250; the reason why the optical fiber pressing block 260 is pressed on the high plane side of the optical fiber guide block 250 is that there is a V-shaped groove 252 on the high plane side of the optical fiber guide block 250. When the optical fiber is adapted in the V-shaped groove 252, the top of the optical fiber is pressed by the optical fiber pressing block 260 to play a limiting protection role. In addition, the reason why the optical fiber pressing block 260 is pressed on the high plane side of the optical fiber guide block 250 is mainly to prevent the optical fiber pressing block 260 from loosening. Specifically, by designing both sides of the convex rib 251 as slopes 251a, and the side of the optical fiber pressing block 260 close to the convex rib 251 has a wedge 260a, the wedge 260a and the slope 251a are adapted to each other, so that the convex rib 251 provides a leaning foundation for the optical fiber pressing block 260, and can also ensure that the V-shaped groove 252 inside it is convenient for installing the optical fiber.

[0056] In some embodiments, the optical fiber pressing block 260 is provided with a swing arm 261, and the swing arm 261 is hinged to an arm seat 262 provided on the guide arm 230. The setting of the swing arm 261 and the arm seat 262 is mainly to facilitate the optical fiber pressing block 260 to provide a movable function, because the V-groove 252 of the optical fiber guide block 250 is a non-standard design compared to the ceramic ferrule 240. In order to ensure whether the optical fiber pressing block 260 is firmly matched with the optical fiber guide block 250 and ensure the accurate installation of the optical fiber, it is necessary to swing the optical fiber pressing block 260 to facilitate the observation of the position of the optical fiber.

[0057] In some embodiments, a positioning block 253 is provided on the side of the optical fiber guide block 250. The positioning block 253 is fixed to the end of the guide arm 230 by screws, and a protruding step 253a is provided on the side of the positioning block 253 close to the optical fiber guide block 250. The protruding step 253a is stuck on the outside of the optical fiber guide block 250, and serves to limit the position of the optical fiber guide block 250, thereby ensuring that the optical fiber guide block 250 is firmly installed on the guide arm 230. In addition, convex ribs 232 are provided on both sides of the positioning block 253 at the end of the guide arm 230. The convex ribs 232 limit both sides of the positioning block 253, and the protruding step 253a of the positioning block 253 is stuck on the outside of the optical fiber guide block 250. In addition, the optical fiber guide block 250 is also matched in the adapting groove 231 provided in the guide arm 230, and each of them cooperates with each other and holds each other tightly, thereby increasing the stability of the optical fiber guide block 250 and the optical fiber pressing block 260.

[0058] Example 3

[0059] Reference Fig. 9 The cold grinding platform of the optical fiber lens includes the optical fiber precision rotating clamping device, and also includes a base plate 400 and a cold grinding unit 410, a light source unit 420, a CCD camera observation unit 430 and a light spot online monitoring unit 440 arranged on the top thereof; the cold grinding unit 410, the light source unit 420, the CCD camera observation unit 430 and the light spot online monitoring unit 440 are specifically grinding discs, spotlights, CCD detection cameras and light plate analyzers, respectively. These devices are conventional equipment in the field of conical optical fiber lens preparation technology, and those skilled in the art are clear and aware of the working principles and structural structures of the above devices. In addition, the specific equipment types and models of the cold grinding unit 410, the light source unit 420, the CCD camera observation unit 430 and the light spot online monitoring unit 440 can be selected as needed, and will not be elaborated in this application.

[0060] The optical fiber precision rotating clamping device is arranged on one side of the substrate 400, and the cold grinding unit 410, the light source unit 420, the CCD camera observation unit 430 and the spot online monitoring unit 440 are arranged on the other side of the substrate 400. Specifically, the spot online monitoring unit 440 and the cold grinding unit 410 are installed in parallel, and the CCD camera observation unit 430 and the light source unit 420 correspond to the upper and lower sides of the output end of the cold grinding unit 410 respectively. The light source unit 420 is mainly used to provide light source illumination for the optical fiber, and the CCD camera observation unit 430 cooperates with the light source unit 420 to observe the relative positions of the cold grinding unit 3 and the optical fiber precision rotating clamping device and the extension amount of the optical fiber. The optical fiber precision rotating clamping device can adjust the X and Y axes of the electric slide 300 so that the end of the optical fiber corresponds to the cold grinding unit 410 or the spot online monitoring unit 440.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An optical fiber precision rotating clamping device, comprising a fixed frame (100), one side of the fixed frame (100) is provided with an electric rotating slide (110) and an optical fiber clamping arm (120) fixed on the output side thereof, one side of the optical fiber clamping arm (120) is plugged with a guide tube (130); characterized in that: The optical fiber clamping arm (120) has a platform (126) on one side away from the guide tube (130), a guide block (121) covering the end of the guide tube (130) is provided on the platform (126), and a clamping plate (122) for pressing the optical fiber is also hinged on the platform (126); The fixing frame (100) is also provided with an optical fiber guide assembly (200), the optical fiber guide assembly (200) comprising a connecting arm (210) and a manual slide (220) arranged at the end thereof, the manual slide (220) being provided with a guide arm (230) whose end corresponds to the end of the optical fiber clamping arm (120), and a ceramic ferrule (240) being provided on a side of the guide arm (230) away from the manual slide (220).

2. The optical fiber precision rotation clamping device according to claim 1, characterized in that: The optical fiber clamping arm (120) is provided with a through optical fiber channel (123), one section of the optical fiber channel (123) has a large outer diameter, the other section has a small outer diameter, and the two sections are in a gradually contracting transition; the end of the optical fiber channel (123) away from the electric rotary slide (110) is in an outward expansion shape.

3. The optical fiber precision rotation clamping device according to claim 2, characterized in that: One side of the guide tube (130) is plugged into the large outer diameter section of the optical fiber channel (123), and a needle tube (131) and a trumpet tube (132) are respectively provided on both sides of the guide tube (130); wherein the needle tube (131) is located in the optical fiber channel (123), and the trumpet tube (132) is located on the other side of the electric rotary slide (110).

4. The optical fiber precision rotation clamping device according to claim 2, characterized in that: The guide block (121) has a tapered groove at a tapered position corresponding to the optical fiber channel (123), and the tapered groove and the tapered shape of the optical fiber channel (123) form a tapered channel (124).

5. The optical fiber precision rotation clamping device according to claim 1, characterized in that: The optical fiber clamping arm (120) is provided with a magnet (125), the top of the magnet (125) is flush with the platform (126) and corresponds to a side of the clamping plate (122) away from the hinge thereof, and the magnet (125) and the clamping plate (122) are magnetically attracted to each other.

6. The optical fiber precision rotation clamping device according to claim 1, characterized in that: The guide arm (230) is provided with a fiber guide block (250) on one side away from the manual slide (220), and the guide arm (230) is provided with a fiber pressing block (260) located on one side of the fiber guide block (250).

7. The optical fiber precision rotation clamping device according to claim 6, characterized in that: The optical fiber guide block (250) has a high plane on one side and a low plane on the other side, a convex rib (251) is provided between the high and low planes, a plurality of V-shaped grooves (252) are provided on the convex rib (251), and the V-shaped grooves (252) extend to the high plane side of the optical fiber guide block (250).

8. The optical fiber precision rotation clamping device according to claim 7, characterized in that: The bottom of the optical fiber pressing block (260) is placed on the high plane side of the optical fiber guide block (250); the optical fiber pressing block (260) is provided with a swing arm (261), and the swing arm (261) is hinged to an arm seat (262) arranged on the guide arm (230).

9. The optical fiber precision rotation clamping device according to claim 1, characterized in that: It also includes an electric slide (300) fixed to the bottom of the fixed frame (100), wherein the electric slide (300) is a two-axis linear slide, namely an X-axis slide and a Z-axis slide.

10. Cold grinding platform for optical fiber lens, characterized in that: The optical fiber precision rotating clamping device comprises the optical fiber precision rotating clamping device as described in any one of claims 1 to 9, and also comprises a substrate (400) and a cold grinding unit (410), a light source unit (420), a CCD camera observation unit (430) and a light spot online monitoring unit (440) arranged on the top thereof; wherein the optical fiber precision rotating clamping device is arranged on one side of the substrate (400), and the cold grinding unit (410), the light source unit (420), the CCD camera observation unit (430) and the light spot online monitoring unit (440) are arranged on the other side of the substrate (400).

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