Multi-core-diameter optical fiber ultrasonic cutting system under uniform stress

Abstract

The invention relates to the technical field of optical fiber processing, and discloses a multi-core-diameter optical fiber ultrasonic cutting system under uniform stress, which comprises a clamping symmetrical assembly, a horizontal tension driving assembly, an ultrasonic cutting assembly and a cutting knife pushing assembly, an optical fiber is clamped through the cooperation of the pressing plate and the clamping assembly base; the clamping assemblies are slidably connected with the horizontal tension driving assembly, the two clamping assemblies are driven by the horizontal tension driving assembly to move reversely, and horizontal tension is applied to the optical fiber, the ultrasonic cutting assembly is slidably connected with the cutting knife pushing assembly, and the cutting knife pushing assembly is arranged on one side of the clamping symmetrical assembly and located between the two clamping assemblies. The cutting knife pushing assembly drives the ultrasonic cutting assembly to move to cut the optical fiber; the optical fiber cutting device can effectively meet the cutting requirements of optical fibers with different core diameters, the flatness of the cut end face is remarkably improved, and burrs and cracks are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of optical fiber processing, and in particular to a multi-core diameter optical fiber ultrasonic cutting system under uniform force. Background Art

[0002] In the existing optical fiber cutting system, due to the lack of adaptability of the clamping assembly to the distribution of fixing force of optical fibers with different core diameters, or the difficulty in accurately controlling the direction of the cutting force applied by the cutting mechanism, it is often difficult to ensure that the optical fiber is subjected to stable and uniform force during the entire cutting process. These problems are particularly evident for optical fibers with different core diameters. For example, for optical fibers with small core diameters (such as single-mode optical fibers), excessive force can easily lead to end face defects or damage to the optical fiber body; while for optical fibers with large core diameters (such as multi-mode optical fibers), insufficient clamping force or cutting force may cause the optical fiber to shift during cutting, affecting the cutting accuracy. This uneven force situation can cause defects on the cut end face of the optical fiber, such as uneven end face, burrs, and even local cracks, which can significantly reduce the fusion quality and signal transmission performance of the optical fiber.

[0003] As an efficient non-contact cutting method, ultrasonic cutting technology can effectively reduce the problem of uneven force caused by mechanical contact force by applying high-frequency vibration to the fiber cutting area. However, the design of existing ultrasonic fiber cutting systems usually fails to effectively coordinate the force balance between the clamping assembly and the ultrasonic cutting head, so that the cutting effect is still limited by the structural design and operation accuracy. This not only reduces the quality of fiber end face preparation, but also limits the efficiency and production capacity of cutting. Therefore, for the uniform force cutting technology of multi-core diameter optical fibers, an optimized clamping and cutting scheme is urgently needed to improve the uniformity and quality of end face processing. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-core optical fiber ultrasonic cutting system under uniform force with reasonable structural design, simple operation and high degree of automation, so as to effectively solve the shortcomings of the prior art, realize uniform force on the optical fiber during the cutting process, and improve the cutting accuracy and quality.

[0005] The objective of the present invention is achieved through the following technical solutions: a multi-core diameter optical fiber ultrasonic cutting system under uniform force, comprising a clamping symmetrical component, a horizontal pulling force driving component, an ultrasonic cutting component and a cutting knife pushing component, the clamping symmetrical component comprising a clamping component symmetrically arranged on the left and right, the clamping component comprising a handle, a pressing plate, and a clamping component base, the handle is arranged on the top of the pressing plate, the bottom of the pressing plate is provided with a groove, a lower pressing block is arranged in the groove at the bottom of the pressing plate, the top of the clamping component base is provided with a groove, a pad is arranged in the groove at the top of the clamping component base, and the optical fiber is clamped by the cooperation of the pressing plate and the clamping component base;

[0006] The clamping assembly is slidably connected to the horizontal tension driving assembly, and the horizontal tension driving assembly drives the two clamping assemblies to move in opposite directions to apply horizontal tension to the optical fiber. The ultrasonic cutting assembly is slidably connected to the cutting knife pushing assembly, and the cutting knife pushing assembly is arranged on one side of the clamping symmetrical assembly and located between the two clamping assemblies. The cutting knife pushing assembly drives the ultrasonic cutting assembly to move to apply cracks to the optical fiber.

[0007] Preferably, an upper pressing block is provided between the handle and the pressing plate, a through hole is provided in the middle of the upper pressing block, a threaded hole is provided in the middle of the pressing plate, the handle is rotatably connected to the pressing plate through the through hole of the upper pressing block, cylindrical pins are respectively provided at both ends of the bottom of the upper pressing block, compression springs are provided outside the cylindrical pins, through holes are provided at both ends of the pressing plate, linear bearings are provided in the through holes at both ends, and the bottom of the cylindrical pin is connected to the lower pressing block through a linear bearing.

[0008] Preferably, one side of the pressing plate is hingedly connected to the clamping assembly base, and the other side of the pressing plate is provided with a buckle plate.

[0009] Preferably, a V-shaped groove is provided on the upper surface of the pad.

[0010] Preferably, the clamping assembly base comprises a slide seat and a clamping assembly slide plate, a cross roller guide rail is provided between the slide seat and the clamping assembly slide plate, and a force sensor is provided inside the clamping assembly slide plate.

[0011] Preferably, permanent magnets are provided in the pressing plate and in the base of the clamping assembly.

[0012] Preferably, a linear guide rail A is provided between the clamping assembly and the horizontal tension driving assembly.

[0013] Preferably, the horizontal pulling force driving assembly includes a seat plate, a screw seat, a motor and two driving transmission brackets, the screw seat is arranged at the bottom of the seat plate, the screw seat includes a bidirectional screw, two screw nut slides and two support seats, the screw nut slide is arranged on the bidirectional screw, the two ends of the bidirectional screw are respectively connected to the seat plate through the support seats, a motor seat is provided at the bottom of the seat plate, the motor is connected to the seat plate through the motor seat, the output end of the motor is connected to one end of the bidirectional screw, the driving transmission bracket is arranged at the top of the seat plate, the bottom of the driving transmission bracket is connected to the screw nut slide, and the top of the driving transmission bracket is connected to the clamping assembly.

[0014] Preferably, the cutting knife pushing assembly includes a base, a pushing assembly slide, and a tension spring. The pushing assembly slide is slidably connected to the base. A pushing assembly bearing seat is provided on one side of the base. The pushing assembly bearing seat is provided with a through hole. A stepper motor is provided below the pushing assembly bearing seat. The output end of the stepper motor passes through the pushing assembly bearing seat to connect to the eccentric wheel. When the stepper motor rotates, one side of the eccentric wheel presses against the pushing assembly slide to move it, thereby driving the ultrasonic cutting assembly to move and applying a crack perpendicular to the cross-section of the optical fiber to the optical fiber.

[0015] Preferably, the ultrasonic cutting assembly includes an ultrasonic applicator support, an ultrasonic applicator, a cutter head and an ultrasonic driving board, the ultrasonic applicator support is arranged on the cutting knife pushing assembly, the ultrasonic applicator is installed on the ultrasonic applicator support, one end of the ultrasonic applicator is connected to the cutter head, and the other end of the ultrasonic applicator is connected to the ultrasonic driving board through a wire.

[0016] The present invention has the following beneficial effects: (1) The present invention can effectively adapt to the cutting requirements of optical fibers with different core diameters by optimizing the clamping assembly and the cutting force loading method, and combining the coordinated application of vertical cutting and horizontal pulling force. For large-core-diameter optical fibers, the system can provide a higher cutting force to ensure cutting integrity; for small-core-diameter optical fibers, the system can avoid excessive force and reduce end face defects through refined mechanical control, thereby achieving high-quality preparation of multi-core-diameter optical fiber cutting.

[0017] (2) The present invention significantly improves the flatness of the cut end face and reduces the generation of burrs and cracks by optimizing the design of the force distribution during the fiber cutting process. Compared with the traditional cutting method, the present invention can better control the geometric shape and optical performance of the fiber cut end face, significantly reduce the insertion loss and return loss during the fiber connection process, and provide a strong guarantee for the performance stability of the fiber communication and sensing system.

[0018] (3) The present invention combines the high-frequency vibration characteristics of ultrasonic cutting technology and optimizes the vibration frequency and amplitude parameters according to the cutting requirements of optical fibers with different core diameters, making the transmission of ultrasonic energy more uniform and effective, and reducing the unevenness of mechanical contact force. This improvement not only improves the cutting accuracy, but also reduces the impact of thermal effects and mechanical stress on the optical fiber end face, thereby further improving the cutting efficiency and processing stability.

[0019] (4) The present invention is of great significance in the fields of optical fiber communication, high-precision optical fiber sensor arrays, and integrated optical device manufacturing. By improving the quality of the optical fiber end face and the cutting efficiency, the present invention can significantly improve the insertion loss and return loss performance of the system, and enhance the stability and reliability of signal transmission. In addition, the technical optimization of the system provides a more reliable and efficient technical solution for optical fiber manufacturing and high-end optical equipment production, promoting the widespread application and popularization of optical fiber technology in the industrial field. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the clamping symmetrical assembly of the present invention;

[0022] Figure 3 An exploded view of the clamping symmetric assembly of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the horizontal pulling force driving assembly of the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of the horizontal pulling force driving assembly of the present invention from a top view;

[0025] Figure 6 It is a schematic diagram of the structure of the ultrasonic cutting driving component of the present invention;

[0026] Figure 7 It is a schematic diagram of the structure of the cutting knife pushing assembly of the present invention;

[0027] Figure 8 An exploded view of the cutting blade pushing assembly of the present invention;

[0028] Fig. 9 It is a schematic diagram of the eccentric wheel structure of the present invention.

[0029] In the figure: 1. Clamping assembly; 11. Handle; 12. Upper pressure block; 13. Cylindrical pin; 14. Compression spring; 15. Linear bearing; 16. Pressure plate; 17. Hinge seat; 18. Lower pressure block; 19. Buckle plate; 110. Slide seat; 111. Pad; 112. Cross roller guide; 113. Clamping assembly slide; 114. Linear slide slider; 2. Horizontal tension drive assembly; 21. Seat plate; 22. Linear guide A; 23; Drive transmission bracket; 24 , motor; 25, motor seat; 26, coupling; 27, bidirectional screw; 28, screw nut slide; 29, support seat; 3, ultrasonic cutting assembly; 31, ultrasonic energy applicator support; 32, ultrasonic energy applicator; 33, cutter head; 4, cutting knife push assembly; 41, base; 42, push assembly slide; 43, linear guide B; 44, tension spring; 45, stepper motor; 46, push assembly bearing seat; 47, eccentric wheel; 48, bearing cover. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0031] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0032] The multi-core diameter optical fiber ultrasonic cutting system under uniform force mainly includes a clamping symmetrical component, a horizontal tension driving component 2, an ultrasonic cutting component 3 and a cutting knife pushing component 4. The clamping symmetrical component includes two groups of clamping components 1 arranged symmetrically on the left and right. The optical fiber is clamped by the two groups of clamping components 1. The linear slide block 114 at the bottom of the clamping component 1 is connected to the linear guide A22 of the horizontal tension driving component 2. The horizontal tension driving component 2 drives the two groups of clamping components 1 to move in the opposite direction. The optical fiber is tensioned under the drive of the clamping component 1. The ultrasonic cutting component 3 is connected to the cutting knife pushing component 4, and the ultrasonic cutting component 3 is arranged on one side of the clamping symmetrical component. The cutting knife pushing component 4 pushes the cutter head 33 in the ultrasonic cutting component 3 to achieve cutting of the optical fiber. The stepper motor is mainly driven by the L298N dual H-bridge driver chip. The speed of the stepper motor is proportional to the pulse frequency of the input signal. A higher frequency will cause the motor to rotate faster, while a lower frequency will slow down the speed. The four signal lines of the stepper motor are connected to the output ports of L298N channel A and channel B, and the control input port is connected to the microcontroller to control the microcontroller to generate a pulse signal of a certain frequency. L298N will provide the corresponding current according to the frequency of the input signal to drive the motor to rotate. The ultrasonic cutting knife can automatically configure the resonant frequency within 3 seconds by connecting the ultrasonic driver board, and the resonant frequency is 40KHZ.

[0033] The clamping assembly 1 includes a handle 11, a pressing plate 16, a slide 110, and a clamping assembly slide 113. The slide 110 and the clamping assembly slide 113 are connected by a cross roller guide 112 to ensure accurate positioning and movement of the optical fiber during the cutting process. A linear slide slider 114 is provided at the bottom of the clamping assembly slide 113. The linear slide slider 114 is slidably connected to the linear guide A22. A groove is provided on the upper surface of the slide 110, and a pad 111 is provided in the groove. A V-shaped groove is provided on the upper surface of the pad 111 for placing the optical fiber. A groove is provided at the bottom of the pressing plate 16, and a lower pressing block 18 is provided in the groove. One side of the pressing plate 16 is hingedly connected to one side of the slide 110 through a hinge seat 19, and a buckle plate 17 is provided on the other side of the pressing plate 16 to ensure that the pressing plate 16 and the slide 110 are compacted.

[0034] Permanent magnets are provided in the pressure plate 16 and the slide 110 to ensure that the pressure plate 16 fits tightly with the slide. A force sensor is provided in the clamping assembly slide 113. When the motor 24 is started, the bidirectional screw 27 rotates to make the two screw nut slides 28 move in opposite directions, driving the two clamping assemblies 1 to move in opposite directions. The optical fiber is straightened and deformed, generating a retraction force. The slide 110 and the clamping assembly slide 113 are subjected to opposite forces, and the force sensor can monitor the tension of the optical fiber in real time.

[0035] A through hole is provided in the middle of the upper pressing block 12, and a threaded hole is provided in the middle of the pressing plate 16. The handle 11 passes through the through hole and is rotatably connected to the pressing plate 16. Cylindrical pins 13 are respectively provided on both sides of the bottom of the upper pressing block. A compression spring 14 is provided on the outer sleeve of the cylindrical pin 13. The pressing plate 16 is provided with two through holes corresponding to the cylindrical pin 13. A linear bearing 15 is provided in the through hole of the pressing plate 16. The bottom of the cylindrical pin 13 is installed in the linear bearing 15 and is connected to the lower pressing block 18. The lower pressing block 18 is provided with two holes corresponding to the cylindrical pin 13. Axle holes are provided on the outer sides of the upper pressing block 12 and the lower pressing block 18. The cylindrical pin 13 is fixed in the axle hole by a top screw. By rotating the handle 11, the upper pressing block 12 and the cylindrical pin 13 are driven to be pressed down or moved up, so that the lower pressing block 18 and the pad 111 are compacted or loosened, thereby realizing the rapid release and clamping of the optical fiber.

[0036] The horizontal pulling force driving assembly 2 includes a seat plate 21, a screw seat, a motor 24, and two driving transmission brackets 23. The screw seat is arranged at the bottom of the seat plate 21. A linear guide rail A22 is provided on the top of the seat plate 21. The linear guide rail A22 is slidably connected with the linear guide slider 114; the screw seat includes a bidirectional screw 27 and a support seat 29. The two sections of the threads of the bidirectional screw 27 with different rotation directions are respectively provided with screw nut slides 28. The two driving transmission brackets 23 are arranged on the top of the seat plate 21 and are connected with the screw nut slides 28. The top of the moving bracket 23 is connected to the linear guide slider 114, and the two ends of the bidirectional lead screw 27 are connected to the base plate 21 through the support seat 29 respectively. The bottom of the base plate 21 is provided with a motor seat 25, and the motor 24 is connected to the base plate 21 through the motor seat 24. The output end of the motor 24 is connected to one end of the bidirectional lead screw 27 through the coupling 26; when the motor 24 is started, the torque is transmitted through the coupling 26, driving the bidirectional lead screw 27 to rotate forward and reverse, so that the two lead screw nut slides 28 move in the same direction or reverse direction, realizing the same direction or reverse movement of the two clamping components 1.

[0037] The cutting knife pushing component 4 includes a base 41, a pushing component slide 42, and a tension spring 44. The bottom of the pushing component slide 42 is slidably connected to the base 41 through a linear guide B 43. One end of the tension spring 44 is fixed to the bottom of the pushing component slide 42, and the other end is fixed to the top of the base 41. A pushing component bearing seat 46 is provided on one side of the base 41. The pushing component bearing seat 46 is provided with a through hole. A stepper motor 45 is provided below the pushing component bearing seat 46. The output shaft of the stepper motor 45 is connected to the eccentric wheel 47. When the stepper motor 45 rotates, one side of the eccentric wheel 47 presses against the pushing component slide 42 to move it, driving the ultrasonic cutting component 3 to move and cut the optical fiber. At this time, the tension spring 44 is in a compressed state. After the optical fiber cutting is completed, the stepper motor 45 rotates to rotate the eccentric wheel 47. The pushing component slide 42 is retracted due to the release of the tension spring 44. A bearing cover 48 is provided above the eccentric wheel 47.

[0038] The ultrasonic cutting component 3 includes an ultrasonic energy applicator support 31, an ultrasonic energy applicator 32, a cutter head 33 and an ultrasonic driving board. The ultrasonic energy applicator support 31 is arranged on the pushing component slide 42, and the ultrasonic energy applicator 32 is installed on the ultrasonic energy applicator support 31. One end of the ultrasonic energy applicator 32 is connected to the cutter head 33, and the other end is connected to the ultrasonic driving board through a wire.

[0039] The principle of use is to place the optical fiber to be cut in the V-groove. The V-groove can be replaced according to the core diameter of the optical fiber. The pressure plate 16 is covered on the slide seat, and the buckle plate 19 is broken off to compact the pressure plate 16 and the slide seat 110. The handle 11 is rotated to make the cylindrical pin 13 press against the lower pressing block 18. The lower pressing block 18 cooperates with the pad 111 to further compact the optical fiber. The motor 24 is started to drive the bidirectional screw rod 27 to rotate, so that the two screw rod nut slide seats 28 move in the opposite direction. Since the driving transmission bracket 23 is connected to the clamping assembly slide plate 113, the clamping assembly slide plate 113 moves in the opposite direction, thereby generating a reverse pulling force on the optical fiber, and the optical fiber is pulled in the horizontal direction. Force, since a cross roller guide 112 is provided between the slide 110 and the clamping assembly slide 113, the optical fiber undergoes plastic deformation at this time, generating a force to prevent deformation, and the slide 110 and the clamping assembly slide 113 are subjected to opposite forces. At this time, the force sensor can monitor the tension of the optical fiber in real time, and can adjust the start of the motor 24 according to the measured value. When the optical fiber is straightened, the stepper motor 45 is started to drive the eccentric wheel 47 to rotate, and one side of the eccentric wheel 47 is against the pushing assembly slide 42 to move it, driving the ultrasonic cutting assembly 3 to move, applying a crack to the optical fiber, and continuing to apply horizontal tension to the optical fiber, thereby achieving optical fiber cutting.

[0040] The above description is only a preferred embodiment of the present invention, but is not intended to limit the present invention. Those skilled in the art may make possible changes and modifications to the present invention using the technical contents disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. Multi-core fiber ultrasonic cutting system under uniform force, characterized in that: The invention comprises a symmetrical clamping component, a horizontal pulling force driving component (2), an ultrasonic cutting component (3) and a cutting knife pushing component (4), wherein the symmetrical clamping component comprises a clamping component (1) which is arranged symmetrically on the left and right, wherein the clamping component (1) comprises a handle (11), a pressing plate (16) and a clamping component base, wherein the handle (11) is arranged on the top of the pressing plate (16), a groove is arranged on the bottom of the pressing plate (16), a lower pressing block (18) is arranged in the groove at the bottom of the pressing plate (16), a groove is arranged on the top of the clamping component base, a pad (111) is arranged in the groove at the top of the clamping component base, and the optical fiber is clamped by the cooperation between the pressing plate (16) and the clamping component base; The clamping assembly (1) is slidably connected to the horizontal tension driving assembly (2), and the horizontal tension driving assembly (2) drives the two clamping assemblies (1) to move in opposite directions, thereby applying horizontal tension to the optical fiber. The ultrasonic cutting assembly (3) is slidably connected to the cutting knife pushing assembly (4), and the cutting knife pushing assembly (4) is arranged on one side of the clamping symmetrical assembly and located between the two clamping assemblies (1). The cutting knife pushing assembly (4) drives the ultrasonic cutting assembly (3) to move, thereby applying a crack perpendicular to the cross section of the optical fiber to the optical fiber.

2. The multi-core optical fiber ultrasonic cutting system under uniform force according to claim 1, characterized in that: An upper pressing block (12) is provided between the handle (11) and the pressing plate (16), a through hole is provided in the middle of the upper pressing block (12), a threaded hole is provided in the middle of the pressing plate (16), the handle (11) is rotatably connected to the pressing plate (16) through the through hole of the upper pressing block (12), cylindrical pins (13) are provided at both ends of the bottom of the upper pressing block (12), a compression spring (14) is provided outside the cylindrical pin (13), through holes are provided at both ends of the pressing plate (16), linear bearings (15) are provided in the through holes at both ends, and the bottom of the cylindrical pin (13) is connected to the lower pressing block (18) through the linear bearing (15).

3. The multi-core optical fiber ultrasonic cutting system under uniform force according to claim 1, characterized in that: One side of the pressing plate (16) is hingedly connected to the clamping assembly base, and the other side of the pressing plate (16) is provided with a buckle plate (17).

4. The multi-core optical fiber ultrasonic cutting system under uniform force according to claim 1, characterized in that: The upper surface of the pad (111) is provided with a V-shaped groove.

5. The multi-core optical fiber ultrasonic cutting system under uniform force according to claim 1, characterized in that: The clamping assembly base comprises a slide seat (110) and a clamping assembly slide plate (113); a cross roller guide rail (112) is provided between the slide seat (110) and the clamping assembly slide plate (113); and a force sensor is provided inside the clamping assembly slide plate (113).

6. The multi-core optical fiber ultrasonic cutting system under uniform force according to claim 1, characterized in that: Permanent magnets are arranged inside the pressing plate (16) and inside the clamping component base.

7. The multi-core optical fiber ultrasonic cutting system under uniform force according to claim 1, characterized in that: A linear guide rail A (22) is provided between the clamping assembly (1) and the horizontal pulling force driving assembly (2).

8. The multi-core optical fiber ultrasonic cutting system under uniform force according to claim 1, characterized in that: The horizontal pulling force driving assembly (2) comprises a seat plate (21), a screw seat, a motor (24) and two driving transmission brackets (23), wherein the screw seat is arranged at the bottom of the seat plate (21), the screw seat comprises a bidirectional screw (27), two screw nut slides (28) and two support seats (29), the screw nut slides (28) are arranged on the bidirectional screw (27), and the two ends of the bidirectional screw (27) are respectively connected to the seat plate through the support seats (29). (21), a motor seat (25) is provided at the bottom of the seat plate (21), the motor (24) is connected to the seat plate (21) through the motor seat (25), the output end of the motor (24) is connected to one end of a bidirectional screw rod (27), the driving transmission bracket (23) is arranged on the top of the seat plate (21), the bottom of the driving transmission bracket (23) is connected to the screw rod nut slide seat (28), and the top of the driving transmission bracket (23) is connected to the clamping assembly (1).

9. The multi-core optical fiber ultrasonic cutting system under uniform force according to claim 1, characterized in that: The cutting knife pushing assembly (4) comprises a base (41), a pushing assembly slide (42), and a tension spring (44); the pushing assembly slide (42) is slidably connected to the base (41); a pushing assembly bearing seat (46) is provided on one side of the base (41); the pushing assembly bearing seat (46) is provided with a through hole; a stepping motor (45) is provided below the pushing assembly bearing seat (46); the output end of the stepping motor (45) passes through the through hole of the pushing assembly bearing seat (46) to connect to the eccentric wheel (47); when the stepping motor (45) rotates, one side of the eccentric wheel (47) presses against the pushing assembly slide (42) to move it, thereby driving the ultrasonic cutting assembly (3) to move, and applying a crack perpendicular to the cross section of the optical fiber to the optical fiber.

10. The multi-core optical fiber ultrasonic cutting system under uniform force according to claim 1, characterized in that: The ultrasonic cutting assembly (3) comprises an ultrasonic energy applicator support (31), an ultrasonic energy applicator (32), a cutter head (33) and an ultrasonic driving board. The ultrasonic energy applicator support (31) is arranged on the cutting knife pushing assembly (4), the ultrasonic energy applicator (32) is installed on the ultrasonic energy applicator support (31), one end of the ultrasonic energy applicator (32) is connected to the cutter head (33), and the other end of the ultrasonic energy applicator (32) is connected to the ultrasonic driving board via a wire.

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