A bare fiber fau polishing fixture

Abstract

The present application relates to the technical field of optical fiber communication, and especially relates to a bare fiber FAU grinding clamp, which comprises a clamp, a fixing sleeve is arranged below the clamp through a piston, a rotating seat is arranged on the fixing sleeve through rotation connection, an adjusting seat is arranged above the rotating seat, a transmission mechanism is arranged on one side of the adjusting seat through fixed connection, a movable frame is arranged at one end of the transmission mechanism through rotation connection, a turnover seat is arranged on the movable frame through rotation connection, a plurality of automatic locking mechanisms are arranged on the turnover seat through fixed connection, the problems that the prior art has high operation difficulty and cannot effectively ensure consistency are solved by fine assembly of the optical fiber extension size, meanwhile, the vertical angle of the bare fiber grinding is ensured based on the V groove of the FA, the FA assembly difficulty is greatly reduced, the vertical angle of the FA bare fiber extension is ensured, the coupling precision is higher, the output power is stable, and the material loss caused by the vertical inconsistency of the FA assembly is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of optical fiber communication technology, and in particular to a bare fiber FAU polishing fixture. Background Technology

[0002] A bare fiber FAU polishing fixture is a specialized tool used in the polishing process of optical fibers or bare fibers. It is typically used for end-face treatment of optical fibers to ensure their surface is flat and achieves the desired optical performance. The FAU (Fiber Alignment Unit) is a common component in fiber optic testing or connection systems, typically aiding in the alignment of the fiber axis. During this process, the accuracy of the FAU polishing fixture directly affects the alignment quality of the fiber, thus impacting the performance and stability of the fiber optic connection.

[0003] The design and manufacturing process of FAU polishing fixtures requires a high degree of precision control, similar to the production of high-precision components in engineering machinery manufacturing. Engineering machinery manufacturing involves the machining and assembly of numerous high-precision mechanical parts, which typically need to meet stringent dimensional, tolerance, and mechanical performance requirements to ensure stable operation under prolonged, high-intensity working environments. Similarly, the manufacturing of FAU polishing fixtures requires advanced engineering machinery manufacturing technologies, particularly in the machining accuracy of parts, material selection, and assembly processes. The core components of FAU polishing fixtures (such as positioning slots and clamping mechanisms) have extremely high requirements for dimensional accuracy and surface roughness; traditional machining methods struggle to meet their micron-level tolerances and low surface roughness requirements. Applying chemical mechanical polishing (CMP) technology to fixture manufacturing allows for fine processing of critical mating surfaces, significantly improving the accuracy and stability of fiber alignment and effectively reducing connection losses.

[0004] In the production of fiber optic alignment and polishing fixtures, common manufacturing processes include CNC machining, precision milling, and grinding, similar to the technologies used in the engineering machinery field for machining complex parts. These technologies ensure that every component of the FAU fixture achieves micron-level precision, guaranteeing the stability and high-precision alignment of the fiber during the polishing process.

[0005] Furthermore, the selection of suitable materials is crucial for FAU grinding fixtures, a process similar to material selection in engineering machinery manufacturing. The fixture material must possess high mechanical strength and durability, and be able to withstand long-term mechanical stress and wear. High-precision aluminum alloys, stainless steel, or other wear-resistant alloys are often used as manufacturing materials for fixtures. These materials not only ensure the stability of the fixture but also prevent a decrease in accuracy due to material fatigue or deformation.

[0006] The prior art publication CN106181753B provides a 45°FA polishing fixture, which uses the polishing end of the disc-shaped fixture to polish bare optical fibers fixed with a scissor, which can improve polishing accuracy and greatly reduce the defect rate; multiple polishing ends can be used to polish multiple optical fibers at the same time, improving production efficiency and reducing costs.

[0007] When using existing technologies, the perpendicularity of the bare fiber FA coupling scheme cannot be guaranteed, and existing technologies cannot perform perpendicular grinding on the bare FA fibers. Currently, most of the existing technologies use a container to grind the optical fibers first and then assemble them one by one. The consistency after assembly cannot meet the coupling requirements. At the same time, when using existing technologies, each time the optical fiber is clamped, the screws need to be tightened manually with a screwdriver. This process is both time-consuming and labor-intensive, especially when a large number of optical fibers need to be processed in batches. The repetitiveness of the operation is high and the efficiency is low.

[0008] In summary, the existing technology lacks the technology for rapid assembly and automatic clamping of bare fiber FAU grinding fixtures. Summary of the Invention

[0009] The purpose of this invention is to address the shortcomings of the prior art by proposing a bare fiber FAU grinding fixture.

[0010] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a bare fiber FAU grinding fixture, comprising a fixture, a fixed sleeve being piston-inserted and disposed below the fixture, a rotating seat being rotatably connected to the fixed sleeve, an adjusting seat being disposed above the rotating seat, a transmission mechanism being fixedly connected to one side of the adjusting seat, a movable frame being rotatably connected to one end of the transmission mechanism, a flipping seat being rotatably connected to the movable frame, and multiple automatic locking mechanisms being fixedly connected to the flipping seat.

[0011] Preferably, the top end of the fixed sleeve is fixedly connected with multiple positioning rods, which are movably connected to the insertion holes on the clamp. The bottom end of the fixed sleeve is provided with an annular groove, and an annular rack is fixedly connected in the annular groove.

[0012] Preferably, a motor A is fixedly connected to the rotating seat, and a drive wheel is fixedly connected to the output end of the motor A through the rotating seat. The drive wheel is meshed with a ring rack for transmission. A limit ring is fixedly connected to the bottom end of the rotating seat, and the limit ring is rotatably connected to the inner wall of the annular groove.

[0013] Preferably, an electric actuator A is fixedly connected to the rotating seat, and the other end of the electric actuator A is fixedly connected to the adjusting seat. An adjusting plate is fixedly connected to the rotating seat, and a bending groove is formed through the adjusting plate. An adjusting rack is fixedly connected to the top of the adjusting plate.

[0014] Preferably, a sliding groove is provided on one side of the adjusting seat, and the inner wall of the adjusting seat is slidably fitted with the fixed sleeve.

[0015] Preferably, the transmission mechanism includes a fixed block, which is fixedly connected to the adjusting seat. A connecting rod assembly is rotatably connected to the fixed block. A transmission wheel is fixedly connected to one end of the connecting rod assembly that is connected to the fixed block. A transmission rack is meshed with one side of the transmission wheel. A guide shaft is fixedly connected to one end of the transmission rack. The outer wall of the guide shaft is slidably fitted with the inner wall of the bending groove.

[0016] Preferably, a slider is fixedly connected to one end of the movable frame, the slider is slidably engaged with the inner wall of the slide groove, and the slider is rotatably connected to the other end of the connecting rod assembly.

[0017] Preferably, a rotating shaft is fixedly connected to one end of the flipping seat, and the other end of the rotating shaft is rotatably connected to the movable frame. A worm gear is fixedly connected to the rotating shaft, and a worm is meshed with one side of the worm gear. A connecting block is rotatably connected to the worm, and the connecting block is fixedly connected to the movable frame. An adjusting wheel is fixedly connected to one end of the worm, and the adjusting wheel meshes with an adjusting rack.

[0018] Preferably, the automatic locking mechanism includes a fixed base, which is fixedly connected to a flip base. An electric actuator B is rotatably connected through the fixed base. A hexagonal head is fixedly connected to the output end of the electric actuator B. The outer wall of the hexagonal head is adapted to the inner wall of the internal hexagonal screw on the clamp. A driven wheel is fixedly connected to the electric actuator B. A driving wheel is engaged with one side of the driven wheel. A motor C is fixedly connected to one side of the driving wheel. The motor C is fixedly connected to the fixed base.

[0019] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention solves the problem of high operational difficulty and inability to effectively guarantee consistency in the prior art by precisely assembling the fiber extension dimensions. At the same time, based on the V-groove of the FA, it ensures the vertical angle of the bare fiber extension grinding, which greatly reduces the difficulty of assembling the FA. In addition, ensuring the vertical angle of the bare fiber extension of the FA can make the coupling accuracy higher, the output power more stable, and greatly reduce the material loss caused by the inconsistency of vertical FA assembly. 2. By setting up a rotating seat and an automatic locking mechanism, the automatic locking mechanism can quickly and accurately complete the clamping of bare fibers, thereby ensuring that the clamping force is kept within the optimal range each time, avoiding equipment damage or fiber deformation due to over-tightening or under-tightening, greatly reducing manual operation time, and thus improving work efficiency. Especially on production lines that require frequent clamping operations, automation can significantly reduce operation time and improve overall production speed. 3. By setting up an adjustment seat, transmission mechanism, movable frame and flipping seat, the automatic locking mechanism can be driven to retract to the bottom of the fixture when not in use, so that the bare fiber FAU grinding fixture can operate more flexibly, accurately and efficiently under different working conditions, while improving the safety, durability and maintenance convenience of the equipment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the fixture structure of a bare fiber FAU grinding fixture according to the present invention; Figure 2 This is a schematic diagram of the overall structure of a bare fiber FAU grinding fixture according to the present invention; Figure 3 This is a partial cross-sectional schematic diagram of the fixing sleeve and other structures of a bare fiber FAU grinding fixture according to the present invention; Figure 4 This is a partial cross-sectional schematic diagram of the rotating seat structure of a bare fiber FAU grinding fixture according to the present invention; Figure 5 This is a partial cross-sectional schematic diagram of the adjustment seat and other structures of a bare fiber FAU grinding fixture according to the present invention; Figure 6 This is a partial cross-sectional schematic diagram of the transmission mechanism structure of a bare fiber FAU grinding fixture according to the present invention; Figure 7 This is a schematic diagram of the movable frame and flipping seat structure of a bare fiber FAU grinding fixture according to the present invention; Figure 8 This is a partial cross-sectional schematic diagram of the automatic locking mechanism structure of a bare fiber FAU grinding fixture according to the present invention.

[0021] The following are labeled in the diagram: 1. Fixture; 2. Fixed sleeve; 3. Rotating seat; 4. Adjusting seat; 5. Transmission mechanism; 6. Movable frame; 7. Tilting seat; 8. Automatic locking mechanism; 201. Positioning rod; 202. Annular groove; 203. Annular rack; 301. Motor A; 302. Drive wheel; 303. Limit ring; 304. Electric push rod A; 305. Adjusting plate; 306. Bending groove; 307. Adjusting rack. 401. Slide groove; 501. Fixed block; 502. Connecting rod assembly; 503. Transmission wheel; 504. Transmission rack; 505. Guide shaft; 601. Slider; 701. Rotating shaft; 702. Worm gear; 703. Worm; 704. Connecting block; 705. Adjusting wheel; 801. Fixed seat; 802. Electric actuator B; 803. Hexagonal head; 804. Driven wheel; 805. Driving wheel; 806. Motor C. Detailed Implementation

[0022] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0023] like Figures 1-8 The bare fiber FAU grinding fixture shown includes a fixture 1, a fixed sleeve 2 is piston-inserted below the fixture 1, a rotating seat 3 is rotatably connected to the fixed sleeve 2, an adjusting seat 4 is provided above the rotating seat 3, a transmission mechanism 5 is fixedly connected to one side of the adjusting seat 4, a movable frame 6 is rotatably connected to one end of the transmission mechanism 5, a flipping seat 7 is rotatably connected to the movable frame 6, and multiple automatic locking mechanisms 8 are fixedly connected to the flipping seat 7.

[0024] This invention solves the problems of high operational difficulty and inability to effectively guarantee consistency in existing technologies by precisely assembling the fiber extension dimensions. At the same time, based on the V-groove of the FA, it ensures the vertical angle of the bare fiber extension grinding, which greatly reduces the difficulty of assembling the FA. In addition, ensuring the vertical angle of the bare fiber extension of the FA can result in higher coupling accuracy, stable output power, and greatly reduce material loss caused by inconsistent verticality of FA assembly.

[0025] like Figure 3 As shown, multiple positioning rods 201 are fixedly connected to the top of the fixed sleeve 2. The positioning rods 201 are movably inserted into the insertion holes on the clamp 1. An annular groove 202 is formed on the bottom of the fixed sleeve 2, and an annular rack 203 is fixedly connected in the annular groove 202. The positioning rods 201 realize the installation between the fixed sleeve 2 and the clamp 1. At the same time, a stepped platform is formed on the top of the fixed sleeve 2, and the lower part of the stepped platform is at a certain distance from the clamp 1.

[0026] like Figure 4 As shown, a motor A301 is fixedly connected to the rotating base 3. The output end of the motor A301 passes through the rotating base 3 and is fixedly connected to a drive wheel 302. The drive wheel 302 meshes with the annular rack 203 for transmission. A limit ring 303 is fixedly connected to the bottom end of the rotating base 3, and the limit ring 303 is rotatably connected to the inner wall of the annular groove 202. The rotating base 3 drives the automatic locking mechanism 8 to adjust its angle, thereby clamping multiple bare fibers.

[0027] An electric actuator A304 is fixedly connected to the rotating base 3. The other end of the electric actuator A304 is fixedly connected to the adjusting base 4. An adjusting plate 305 is fixedly connected to the rotating base 3. A bending groove 306 is formed through the adjusting plate 305. An adjusting rack 307 is fixedly connected to the top of the adjusting plate 305. The bending groove 306 enables the automatic drive transmission mechanism 5. The adjusting rack 307 enables the automatic rotation of the tilting base 7.

[0028] like Figure 5As shown, a sliding groove 401 is provided on one side of the adjusting seat 4, and the inner wall of the adjusting seat 4 is slidably fitted with the fixed sleeve 2.

[0029] like Figure 6 As shown, the transmission mechanism 5 includes a fixed block 501, which is fixedly connected to the adjusting seat 4. A connecting rod assembly 502 is rotatably connected to the fixed block 501. A transmission wheel 503 is fixedly connected to one end of the connecting rod assembly 502 connected to the fixed block 501. A transmission rack 504 is meshed on one side of the transmission wheel 503. A guide shaft 505 is fixedly connected to one end of the transmission rack 504. The outer wall of the guide shaft 505 is slidably fitted with the inner wall of the bending groove 306. The electric actuator A304 drives the connected adjusting seat 4 to move upward. At this time, under the action of the bending groove 306 on the adjusting plate 305, the guide shaft 505 drives the connected transmission rack 504 to move, so that the transmission rack 504 can drive the connecting rod assembly 502 connected to the transmission wheel 503 to rotate, and the connecting rod assembly 502 can drive the movable frame 6 connected to the slider 601 to move outward.

[0030] like Figure 7 As shown, a slider 601 is fixedly connected to one end of the movable frame 6. The slider 601 is slidably engaged with the inner wall of the slide groove 401. The slider 601 is rotatably connected to the other end of the connecting rod assembly 502.

[0031] like Figure 7 As shown, a rotating shaft 701 is fixedly connected to one end of the tilting seat 7, and the other end of the rotating shaft 701 is rotatably connected to the movable frame 6. A worm gear 702 is fixedly connected to the rotating shaft 701, and a worm 703 is meshed with one side of the worm gear 702. A connecting block 704 is rotatably connected to the worm 703, and the connecting block 704 is fixedly connected to the movable frame 6. An adjusting wheel 705 is fixedly connected to one end of the worm 703, and the adjusting wheel 705 meshes with the adjusting rack 307. When the adjusting seat 4 continues to move upward, the adjusting wheel 705 will mesh with the adjusting rack 307, thereby driving the worm 703 connected to the adjusting wheel 705 to rotate. This allows the worm 703 to drive the rotating shaft 701 connected to the worm gear 702 to rotate, and the rotating shaft 701 to drive the tilting seat 7 to rotate.

[0032] like Figure 8As shown, the automatic locking mechanism 8 includes a fixed base 801, which is fixedly connected to the flip base 7. An electric actuator B802 is rotatably connected through the fixed base 801. A hexagonal head 803 is fixedly connected to the output end of the electric actuator B802. The outer wall of the hexagonal head 803 is adapted to the inner wall of the internal hexagonal screw on the clamp 1. A driven wheel 804 is fixedly connected to the electric actuator B802. A driving wheel 805 is meshed and driven on one side of the driven wheel 804. A motor C806 is fixedly connected to one side of the driving wheel 805. The motor C806 is fixedly connected to the fixed base 801. The electric actuator B802 drives the hexagonal head 803 to insert into the side screw and the front screw. Then, the motor C806 drives the connected driving wheel 805 to rotate, so that the driving wheel 805 can drive the electric actuator B802 connected to the driven wheel 804 to rotate, and the electric actuator B802 can drive the connected hexagonal head 803 to rotate.

[0033] Working principle: Before clamping the bare fiber, first wipe the surface of the black glass pad and the leveling device with lint-free paper soaked in alcohol. Then place the black glass pad on the stepped platform at the top of the fixed sleeve 2. Then place the cleaned leveling device in the middle of the black glass pad. Then align the clamp 1 with the positioning rod 201 of the fixed sleeve 2 and insert it. Place the clamp 1 on the leveling device and place the weight on the clamp 1. Check the bottom surface of the black glass, the leveling device and the clamp 1 for gaps to ensure that it is flat. Observe the surface and sides of the FA to be mounted for any residual glue / damage, broken pigtails and other defects to avoid affecting the mounting. Place the FA in the positioning hole of the clamp 1 and adjust the FA until the bottom edge is in complete contact with the black glass surface and there is no light leakage. Then, the electric actuator A304 drives the connected adjusting seat 4 to move upward. At this time, under the action of the bending groove 306 on the adjusting plate 305, the guide shaft 505 drives the connected transmission rack 504 to move, so that the transmission rack 504 can drive the connecting rod group 502 connected to the transmission wheel 503 to rotate, so that the connecting rod group 502 can drive the movable frame 6 connected to the slider 601 to move outward. Then, as the adjusting seat 4 continues to move upward, the adjusting wheel 705 will mesh with the adjusting rack 307, thereby driving the worm 703 connected to the adjusting wheel 705 to rotate, so that the worm 703 can drive the rotating shaft 701 connected to the worm wheel 702 to rotate, so that the rotating shaft 701 can drive the flip seat 7 to rotate 270 degrees, so that multiple hexagonal heads 803 are aligned with the screws on the clamp 1. Then, the electric actuator B802 drives the hexagonal head 803 to be inserted into the side screw and the front screw. Then, the motor C806 drives the connected drive wheel 805 to rotate, so that the drive wheel 805 can drive the electric actuator B802 connected to the driven wheel 804 to rotate, so that the electric actuator B802 can drive the connected hexagonal head 803 to rotate, so that the hexagonal head 803 tightens the side screw and the front screw, fixing FA in the positioning hole of the fixture 1. The fixed FA must meet the two-sided positioning standard and have no tower difference angle and no light leakage. Then, the motor A301 drives the connected drive wheel 302 to rotate, so that the drive wheel 302 meshes with the ring rack 203, which in turn drives the rotating seat 3 to rotate, so that the automatic locking mechanism 8 fixes the FA on the fixture 1 in sequence. After the FA is fixed, rotate the black glass pad and check in sequence whether the FA has tower difference, light leakage, and whether there is light leakage between the fixture 1 and the level gauge. The FA pigtail must be fixed on the support rod in sequence and secured with tape. After checking that there are no defects, remove the fixture 1 and place it upright on the plastic base. Fill out the transfer form correctly.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A bare fiber FAU grinding fixture, comprising a fixture (1), characterized in that: A fixed sleeve (2) is inserted into the piston below the clamp (1). A rotating seat (3) is rotatably connected to the fixed sleeve (2). An adjusting seat (4) is provided above the rotating seat (3). A transmission mechanism (5) is fixedly connected to one side of the adjusting seat (4). A movable frame (6) is rotatably connected to one end of the transmission mechanism (5). A flipping seat (7) is rotatably connected to the movable frame (6). Multiple automatic locking mechanisms (8) are fixedly connected to the flipping seat (7). An electric push rod A (304) is fixedly connected to the rotating seat (3). The other end of the electric push rod A (304) The rotating seat (3) is fixedly connected to the adjusting seat (4). An adjusting plate (305) is fixedly connected to the rotating seat (3). A bending groove (306) is opened through the adjusting plate (305). An adjusting rack (307) is fixedly connected to the top of the adjusting plate (305). A sliding groove (401) is opened on one side of the adjusting seat (4). The inner wall of the adjusting seat (4) is slidably engaged with the fixing sleeve (2). The transmission mechanism (5) includes a fixing block (501). The fixing block (501) is fixedly connected to the adjusting seat (4). A connecting rod assembly (502) is rotatably connected to the fixing block (501). The connecting rod assembly (502) is fixedly connected to a transmission wheel (503) at one end, which is connected to the fixed block (501). A transmission rack (504) is meshed with the transmission wheel (503) on one side. A guide shaft (505) is fixedly connected to one end of the transmission rack (504). The outer wall of the guide shaft (505) is slidably fitted with the inner wall of the bending groove (306). A slider (601) is fixedly connected to one end of the movable frame (6). The slider (601) is slidably fitted with the inner wall of the slide groove (401). The slider (601) is rotatably connected to the other end of the connecting rod assembly (502). The rotating seat (7) is fixedly connected to a rotating shaft (701) at one end, and the other end of the rotating shaft (701) is rotatably connected to the movable frame (6). A worm gear (702) is fixedly connected to the rotating shaft (701), and a worm (703) is meshed and driven on one side of the worm gear (702). A connecting block (704) is rotatably connected to the worm (703), and the connecting block (704) is fixedly connected to the movable frame (6). An adjusting wheel (705) is fixedly connected to one end of the worm (703), and the adjusting wheel (705) meshes and drives with the adjusting rack (307).

2. The bare fiber FAU grinding fixture according to claim 1, characterized in that: The top end of the fixed sleeve (2) is fixedly connected with multiple positioning rods (201), and the positioning rods (201) are movably connected to the insertion holes on the clamp (1). The bottom end of the fixed sleeve (2) is provided with an annular groove (202), and an annular rack (203) is fixedly connected in the annular groove (202).

3. The bare fiber FAU grinding fixture according to claim 2, characterized in that: A motor A (301) is fixedly connected to the rotating seat (3). The output end of the motor A (301) passes through the rotating seat (3) and is fixedly connected to a drive wheel (302). The drive wheel (302) meshes with a ring rack (203) for transmission. A limit ring (303) is fixedly connected to the bottom end of the rotating seat (3). The limit ring (303) is rotatably connected to the inner wall of the annular groove (202).

4. The bare fiber FAU grinding fixture according to claim 1, characterized in that: The automatic locking mechanism (8) includes a fixed base (801), which is fixedly connected to the flip base (7). An electric push rod B (802) is rotatably connected through the fixed base (801). A hexagonal head (803) is fixedly connected to the output end of the electric push rod B (802). The outer wall of the hexagonal head (803) is adapted to the inner wall of the internal hexagonal screw on the clamp (1). A driven wheel (804) is fixedly connected to the electric push rod B (802). A driving wheel (805) is meshed and driven on one side of the driven wheel (804). A motor C (806) is fixedly connected to one side of the driving wheel (805). The motor C (806) is fixedly connected to the fixed base (801).

Images