Femtosecond laser microstructure machining clamping mechanism

Abstract

The utility model relates to the technical field of femtosecond laser machining equipment, in particular to a femtosecond laser microstructure machining clamping mechanism which comprises a numerical control three-dimensional motion platform and a support. A support is connected to the upper portion of the numerical control three-dimensional motion platform, a supporting plate is fixedly connected to the upper surface of the support, and a main shaft is rotationally connected into the supporting plate through a bearing. According to the clamping mechanism for femtosecond laser microstructure machining, four sets of optical fibers are fixed, the first driving assembly is used for machining in other directions, after machining, the second driving assembly is used for rotating the other optical fibers for machining, the clamping mechanism can enable a femtosecond laser optical fiber microstructure machining device to conduct multi-station machining, a coupler is disassembled, and the clamping mechanism is convenient to use. And then the rotating handle is rotated to take down the double-shaft motor upwards for maintenance, the seat plate is placed on the supporting box after maintenance, the rotating handle is reversely rotated to be fixed again, and the clamping mechanism facilitates maintenance of the motor of the femtosecond laser optical fiber microstructure machining device.

Description

Technical Field

[0001] The utility model relates to the technical field of femtosecond laser processing equipment, in particular to a femtosecond laser microstructure processing clamping mechanism. Background Art

[0002] In recent years, as multi-core optical fibers have received increasing attention, fiber Bragg gratings have been gradually applied to multi-core optical fibers to produce various types of multi-core fiber Bragg gratings. Currently, fiber Bragg gratings are mainly prepared using the femtosecond laser preparation method. The femtosecond laser direct writing method combined with a high-precision electric translation stage is more flexible and can produce special gratings with complex structures. However, the existing femtosecond laser fiber microstructure processing devices still have certain defects when used, such as;

[0003] Publication No. CN113427135A proposes a device and method for femtosecond laser rotary processing of optical fiber microstructures. The device comprises a femtosecond laser and a computer. An optical fixed bracket sequentially positions a beam expander, an aperture stop, a first reflector, a second reflector, and a scanning galvanometer in the laser light path of the femtosecond laser. A numerically controlled three-dimensional motion platform is mounted directly below the scanning galvanometer. A fixture for clamping the optical fiber is placed on the platform. The femtosecond laser is turned on, an indicator light spot is positioned directly above the optical fiber, the platform is moved, and the position of the light spot on the optical fiber is observed during movement. The fixture is then adjusted to maintain the indicator light spot directly above the optical fiber during movement. The fixture's adjustable-speed AC servo motor is connected to a matching speed regulator. The femtosecond laser, the numerically controlled three-dimensional motion platform, and the fixture are controlled by a computer. This method achieves the processing of optical fiber microstructures.

[0004] According to the above document: the tooling fixture can only fix one optical fiber. After processing, it needs to be removed from the CNC three-dimensional motion platform, and then the next group of optical fibers are installed on the tooling fixture. After the tooling fixture is reinstalled on the CNC three-dimensional motion platform, only one optical fiber can be processed at a time. Based on this, a femtosecond laser microstructure processing clamping mechanism is specially proposed to solve the above problem. Summary of the Invention

[0005] The purpose of the present utility model is to provide a femtosecond laser microstructure processing clamping mechanism to solve the problems raised by the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a femtosecond laser microstructure processing clamping mechanism, comprising: a CNC three-dimensional motion platform and a support; the CNC three-dimensional motion platform is connected to the top of the support, the upper surface of the support is fixedly connected to a support plate, the support plate is rotatably connected to a main shaft through a bearing, and a large gear is fixedly sleeved on the outer side of the main shaft.

[0007] Preferably, a plate is fixedly connected to the upper surface of the support away from the support plate, one side of the plate is rotatably connected to a shaft, the other end of the shaft passes through and rotates in the support plate, and a switching gear is fixed on the outer side of the shaft, and the switching gear is meshed and connected to the bottom of the large gear.

[0008] Preferably, a fiber optic clamp is rotated through the large gear, an angle gear is fixedly sleeved on the outer side of the fiber optic clamp, a transmission gear is meshedly connected below the angle gear, and the transmission gear is rotatably connected to the outer side of the main shaft.

[0009] Preferably, one side of the transmission gear is fixedly connected to a gear ring, the upper part of the gear ring is meshed with a driving gear, one side of the driving gear is connected to a transmission shaft, the outer side of the main shaft is connected to a shaft frame, the transmission shaft rotates through the shaft frame, and one side of the transmission shaft is connected to a first drive component, the first drive component is connected to the outer side of the main shaft, the side of the shaft away from the plate is connected to a second drive component, and the second drive component is connected to the upper surface of the support.

[0010] Preferably, the second drive assembly includes: a coupling, a dual-axis motor, a seat plate, a support box, a bidirectional threaded rod, a handle, an L-shaped groove, and an L-shaped plate. The side of the shaft rod away from the plate is connected to the coupling by a screw, one side of the coupling is connected to the dual-axis motor, the bottom of the dual-axis motor is connected to the seat plate, the bottom of the seat plate is abutted against the support box, and the support box is connected to the upper surface of the support.

[0011] Preferably, a bidirectional threaded rod is rotatably connected to the inner wall of the support box, and the other end of the bidirectional threaded rod is connected to a rotary handle, and the rotary handle penetrates and rotates on the inner wall of the support box.

[0012] Preferably, an L-shaped groove is provided at the bottom of the seat plate, an L-shaped plate is engaged in the L-shaped groove, the L-shaped plate is slidably connected in the support box, and the bidirectional threaded rod is threadedly connected in the L-shaped plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the clamping mechanism for femtosecond laser microstructure processing fixes four groups of optical fibers, uses the first drive assembly to process in other directions, and after processing, uses the second drive assembly to rotate the other optical fibers for processing. The clamping mechanism allows the femtosecond laser fiber microstructure processing device to perform multi-station processing. The coupling is disassembled, and then the handle is rotated to remove the dual-axis motor upward for maintenance. After maintenance, the base plate is placed on the support box and the handle is rotated in the opposite direction to re-fix it. The clamping mechanism facilitates maintenance of the motor of the femtosecond laser fiber microstructure processing device. The specific contents are as follows:

[0014] 1. By inserting four groups of optical fibers into the optical fiber clamps respectively, and using the femtosecond laser processing device body for processing, the first drive component is used to drive the transmission shaft to rotate, driving the optical fibers in the optical fiber clamps to rotate and process in other directions. After processing, the second drive component is used to drive the switching gear to drive the large gear to rotate, rotating the optical fibers in other positions for processing. The four groups of optical fibers are processed in sequence. This clamping mechanism allows the femtosecond laser optical fiber microstructure processing device to perform multi-station processing;

[0015] 2. Disassemble the coupling and rotate the handle to drive the two sets of L-shaped plates to rotate in the corresponding L-shaped grooves. Then remove the dual-axis motor upward for maintenance. After maintenance, place the base plate on the support box and rotate the handle in the opposite direction to re-fix the base plate and the support box. This clamping mechanism facilitates the maintenance of the motor of the femtosecond laser fiber microstructure processing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the main shaft of the utility model;

[0018] Figure 3 This is a schematic diagram of the gear ring of the utility model;

[0019] Figure 4 This is a schematic diagram of an L-shaped plate of the present invention.

[0020] In the figure: 1. Femtosecond laser processing device body; 2. CNC three-dimensional motion platform; 3. Support; 4. Support plate; 5. Main shaft; 6. Large gear; 7. Plate; 8. Shaft; 9. Switching gear; 10. Fiber optic clamp; 11. Angle gear; 12. Transmission gear; 13. Gear ring; 14. Driving gear; 15. Transmission shaft; 16. Shaft frame; 17. First drive assembly; 18. Second drive assembly; 1801. Coupling; 1802. Dual-axis motor; 1803. Base plate; 1804. Support box; 1805. Bidirectional threaded rod; 1806. Rotary handle; 1807. L-shaped groove; 1808. L-shaped plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-Figure 3The utility model provides a technical solution: a femtosecond laser microstructure processing clamping mechanism, comprising: a numerically controlled three-dimensional motion platform 2 and a support 3; the support 3 is connected to the top of the numerically controlled three-dimensional motion platform 2, the upper surface of the support 3 is fixedly connected to a support plate 4, a main shaft 5 is rotatably connected to the support plate 4 through a bearing, a large gear 6 is fixedly sleeved on the outer side of the main shaft 5, a plate 7 is fixedly connected to the upper surface of the support 3 away from the support plate 4, one side of the plate 7 is rotatably connected to a shaft rod 8, the other end of the shaft rod 8 penetrates and rotates in the support plate 4, and a switching gear 9 is sleeved and fixed on the outer side of the shaft rod 8, the switching gear 9 is meshed and connected to the bottom of the large gear 6, and an optical fiber clamp 10 is rotatably penetrated in the large gear 6, An angle gear 11 is fixedly sleeved on the outer side of the optical fiber clamp 10, and a transmission gear 12 is meshedly connected to the bottom of the angle gear 11. The transmission gear 12 is rotatably connected to the outside of the main shaft 5. A gear ring 13 is fixedly connected to one side of the transmission gear 12, and a driving gear 14 is meshedly connected to the top of the gear ring 13. A transmission shaft 15 is connected to one side of the driving gear 14. A shaft frame 16 is connected to the outside of the main shaft 5. The transmission shaft 15 rotates through the shaft frame 16, and a first drive assembly 17 is connected to one side of the transmission shaft 15. The first drive assembly 17 is connected to the outside of the main shaft 5. The side of the shaft rod 8 away from the plate 7 is connected to the second drive assembly 18, and the second drive assembly 18 is connected to the upper surface of the support 3.

[0023] During specific implementation, the four groups of optical fibers are respectively inserted into the corresponding two groups of optical fiber clamps 10. While the femtosecond laser processing device body 1 is used for processing, the first driving component 17 is used to drive the transmission shaft 15 to rotate in the shaft frame 16, and the active gear 14 drives the gear ring 13 to drive the transmission gear 12 to rotate. The transmission gear 12 drives the angle gear 11 to drive the optical fiber in the optical fiber clamp 10 to rotate, and process other directions. After processing, the second driving component 18 is used to drive the shaft 8 to rotate on one side of the plate 7, and the plate 7 drives the switching gear 9 to drive the large gear 6 to rotate, so as to drive the main shaft 5 to rotate in the support plate 4, and rotate the optical fibers in other positions for processing. The four groups of optical fibers are processed in turn. This clamping mechanism can allow the femtosecond laser optical fiber microstructure processing device to perform multi-station processing.

[0024] See Figure 1 、 Figure 2 and Figure 4It can be seen that the second drive assembly 18 includes: a coupling 1801, a dual-axis motor 1802, a seat plate 1803, a support box 1804, a bidirectional threaded rod 1805, a rotary handle 1806, an L-shaped groove 1807, and an L-shaped plate 1808. The side of the shaft 8 away from the plate 7 is connected to the coupling 1801 by a screw, and one side of the coupling 1801 is connected to the dual-axis motor 1802. The bottom of the dual-axis motor 1802 is connected to the seat plate 1803, and the bottom of the seat plate 1803 is abutted against the support box 1804. Box 1804 is connected to the upper surface of the support 3, and a two-way threaded rod 1805 is rotatably connected to the inner wall of the support box 1804. The other end of the two-way threaded rod 1805 is connected to a handle 1806, and the handle 1806 rotates on the inner wall of the support box 1804. An L-shaped groove 1807 is provided at the bottom of the seat plate 1803, and an L-shaped plate 1808 is engaged in the L-shaped groove 1807. The L-shaped plate 1808 is slidably connected to the support box 1804, and the two-way threaded rod 1805 is threadedly connected to the L-shaped plate 1808.

[0025] During specific implementation, the coupling 1801 is disassembled, and then the handle 1806 is rotated to drive the bidirectional threaded rod 1805 to rotate, driving the two sets of L-shaped plates 1808 to rotate in the corresponding L-shaped grooves 1807, and then the dual-axis motor 1802 is removed upward for maintenance. After maintenance, the seat plate 1803 is placed on the support box 1804, and the handle 1806 is rotated in the opposite direction to re-engage the L-shaped plate 1808 in the L-shaped groove 1807. This clamping mechanism facilitates the maintenance of the motor of the femtosecond laser fiber microstructure processing device.

[0026] In summary: when using this kind of femtosecond laser microstructure processing clamping mechanism, first, connect the femtosecond laser processing device body 1 to the computer, then insert the optical fiber from the optical fiber clamp 10 away from the support plate 4, and then insert it into the optical fiber clamp 10 close to the support plate 4, and then first fix the optical fiber clamp 10 close to the support plate 4, then pull the optical fiber straight, and then fix the optical fiber clamp 10 away from the support plate 4, and at the same time fix all four groups of optical fibers, and then turn on the indicator light spot switch of the laser of the femtosecond laser processing device body 1, and use the indicator light spot to focus the laser on the optical fiber. Directly above the optical fiber, adjust the position of the clamping mechanism to ensure that the indicator light spot remains directly above the optical fiber, fix the clamping mechanism on the CNC three-dimensional motion platform 2, use the computer to set the size and shape of the required microstructure, and adjust the direction of the CNC three-dimensional motion platform 2 to adjust the position of the optical fiber. The first drive component 17 adjusts the rotation angle of the optical fiber, and the second drive component 18 switches the optical fibers one by one and processes them in sequence. After processing, open the two sets of optical fiber clamps 10 and remove the processed optical fiber. The content not described in detail in this description belongs to the existing technology known to professional and technical personnel in this field.

[0027] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A femtosecond laser microstructure processing clamping mechanism, comprising: A numerically controlled three-dimensional motion platform (2) and a support (3), characterized in that: the support (3) is connected to the top of the numerically controlled three-dimensional motion platform (2), the upper surface of the support (3) is fixedly connected to a support plate (4), the support plate (4) is rotatably connected to a main shaft (5) through a bearing, and a large gear (6) is fixedly sleeved on the outer side of the main shaft (5); A plate (7) is fixedly connected to the upper surface of the support (3) away from the support plate (4), and a shaft (8) is rotatably connected to one side of the plate (7). The other end of the shaft (8) passes through and rotates in the support plate (4), and a switching gear (9) is sleeved and fixed on the outer side of the shaft (8). The switching gear (9) is meshed and connected to the bottom of the large gear (6); An optical fiber clamp (10) is rotated through the large gear (6), an angle gear (11) is sleeved and fixed on the outer side of the optical fiber clamp (10), a transmission gear (12) is meshed and connected below the angle gear (11), and the transmission gear (12) is rotatably connected to the outer side of the main shaft (5); One side of the transmission gear (12) is fixedly connected to a gear ring (13), and the upper side of the gear ring (13) is meshedly connected to a driving gear (14), and one side of the driving gear (14) is connected to a transmission shaft (15), and the outer side of the main shaft (5) is connected to a shaft frame (16), and the transmission shaft (15) rotates through the shaft frame (16), and one side of the transmission shaft (15) is connected to a first driving component (17), and the first driving component (17) is connected to the outer side of the main shaft (5), and the side of the shaft rod (8) away from the plate (7) is connected to a second driving component (18), and the second driving component (18) is connected to the upper surface of the support (3); The second drive assembly (18) comprises: a coupling (1801), a dual-axis motor (1802), a seat plate (1803), a support box (1804), a bidirectional threaded rod (1805), a rotary handle (1806), an L-shaped groove (1807), and an L-shaped plate (1808); the side of the shaft rod (8) away from the plate (7) is connected to the coupling (1801) via a screw; one side of the coupling (1801) is connected to the dual-axis motor (1802); the bottom of the dual-axis motor (1802) is connected to the seat plate (1803); the bottom of the seat plate (1803) is abutted against the support box (1804); and the support box (1804) is connected to the upper surface of the support (3); A bidirectional threaded rod (1805) is rotatably connected to the inner wall of the support box (1804), and a rotary handle (1806) is connected to the other end of the bidirectional threaded rod (1805). The rotary handle (1806) penetrates and rotates on the inner wall of the support box (1804); An L-shaped groove (1807) is provided at the bottom of the seat plate (1803), an L-shaped plate (1808) is engaged in the L-shaped groove (1807), the L-shaped plate (1808) is slidably connected in the support box (1804), and the bidirectional threaded rod (1805) is threadedly connected in the L-shaped plate (1808).

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