A quick clamping fiber-optic gyroscope welding device and a method of using the same

Abstract

The application relates to a quick clamping optical fiber gyro welding device and a use method thereof. The device comprises an adapter plate, a screw, a base shaft, an adjusting rod, a fixed arm, a folding arm, a spiral sleeve and a spring. The adapter plate is fixed on the base shaft through the screw. One end of the adjusting rod is fixedly connected with the center of the fixed arm. A cylindrical cavity is arranged in the base shaft. The other end of the adjusting rod is arranged in the cylindrical cavity. The folding arm is hinged with the fixed arm. The spiral sleeve is sleeved on the adjusting rod. A threaded hole is arranged at the center of the end of the base shaft close to the adapter plate. The spiral sleeve is connected with the threaded hole through threads. The spring is sleeved on the adjusting rod. One end of the spring abuts against the bottom end face of the spiral sleeve. The quick clamping optical fiber gyro welding device and the use method thereof adopt a direct clamping mode, improve the precision consistency of the batch-produced optical fiber gyro, and improve the work efficiency.

Description

Technical Field

[0001] This invention relates to the field of inertial measurement, and more specifically to a fast-mount fiber optic gyroscope welding device and its usage method. Background Technology

[0002] Fiber optic gyroscopes are crucial angle sensors in inertial measurement systems, and their accuracy directly impacts the precision of inertial measurement equipment. The fiber optic ring is the core component of a fiber optic gyroscope. The fiber optic ring housing is used to secure and protect the fiber optic ring, providing a suitable operating environment, adequate installation space, and preventing external interference with the measurement process. The fiber optic ring housing consists of two parts: the housing body and the cover. However, due to the lightweight structure of the fiber optic ring housing, screws cannot be used to fasten these two parts together; therefore, welding is currently used to assemble the fiber optic ring housing.

[0003] During welding, welding fixtures are needed to secure the fiber optic ring housing and cover together before welding. Welding is required on both the sides and the top. Currently, most welding fixtures are designed with screws and pressure plates. The welding process involves assembling the fixture and fiber optic ring housing, welding the side seams, and then welding the top seams. However, because the pressure plate partially obstructs the top seam, the screws need to be loosened, the pressure plate adjusted, and then tightened again to weld the obstructed area. This mounting method requires reassembly before each welding operation and loosening the screws to adjust the pressure plate position during welding. In batch welding of fiber optic ring housings, this welding fixture requires repeated disassembly and reassembly, making it impossible to guarantee consistent tightness each time. This may affect the accuracy consistency of the fiber optic gyroscopes, and the operation is time-consuming and inefficient.

[0004] Existing technology CN201710324349.4 provides a welding device and welding method for assembling fiber optic gyroscopes. The device includes a fiber optic gyroscope welding assembly, a chuck, a laser assembly, and a platform. When welding fiber optic gyroscopes using this device, the fiber optic gyroscope assembly is first assembled. After assembly, the upper cover of the gyroscope needs to be welded to the upper and lower sides of the gyroscope base. The fiber optic gyroscope welding assembly is used to press the connected upper cover and gyroscope base together. The industrial camera of the laser assembly is used to obtain the weld position and image in real time, and the laser is used to complete the welding. This device can improve the working efficiency and welding accuracy of structural sealing, but it still cannot solve the problem of poor consistency in fiber optic gyroscope accuracy. Summary of the Invention

[0005] To address the technical problems existing in the prior art, this invention provides a rapid-installation fiber optic gyroscope welding device and its usage method, which solves the problems of poor accuracy consistency and low working efficiency of mass-produced fiber optic gyroscopes caused by repeated disassembly and installation of existing welding fixtures.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows:

[0007] A quick-mount fiber optic gyroscope welding device includes an adapter plate, screws, a base shaft, an adjusting rod, a fixed arm, a folding arm, a spiral sleeve, and a spring. The adapter plate is fixed to the base shaft by screws. One end of the adjusting rod is fixedly connected to the center of the fixed arm. A cylindrical cavity is provided inside the base shaft, and the other end of the adjusting rod is set in the cylindrical cavity. The folding arm is hinged to the fixed arm. The spiral sleeve is sleeved on the adjusting rod. A threaded hole is provided at the center of the end of the base shaft near the adapter plate. The spiral sleeve is threaded to the threaded hole. The spring is sleeved on the adjusting rod, and one end of the spring abuts against the bottom end face of the spiral sleeve.

[0008] As a preferred technical solution, there are two folding arms, one end of which is provided with a hinge. The hinges of the two folding arms are rotatably connected to the two ends of the fixed arm.

[0009] As a preferred technical solution, the adapter plate is ring-shaped and has several screws arranged in an array on the adapter plate.

[0010] As a preferred technical solution, the end face diameter of the cylindrical cavity is larger than the diameter of the threaded hole.

[0011] As a preferred technical solution, one end of the adjusting rod located inside the base shaft is connected to a mounting nut, and the spring abuts against the mounting nut.

[0012] As a preferred technical solution, the spring is in a compressed state after the device is installed.

[0013] As a preferred technical solution, the spiral sleeve includes a spiral ring and a spiral tube that are fixedly connected. A limiting nut is provided between the end of the base shaft and the spiral ring. The inner ring of the limiting nut is provided with a thread that matches the spiral tube. The limiting nut and the spiral tube are connected by the thread.

[0014] As a preferred technical solution, a method for using a rapid mounting fiber optic gyroscope welding device includes the following steps:

[0015] Step 1: Assemble the ring chamber, ring chamber cover, and pressure ring of the fiber optic gyroscope to be welded together. Pass the end of the welding device with the folding arm through the hole in the middle of the ring chamber and pull up the adjusting rod.

[0016] Step 2: When the fixed arm is higher than the pressure ring, open the two folding arms so that the distance between the outermost ends of the two folding arms is greater than the diameter of the pressure ring, and then loosen the adjusting rod.

[0017] Step 3: Adjust the depth of the spiral sleeve into the base shaft to increase the clamping force. Once the required clamping force is reached, tighten the limit nut to fix the spiral sleeve.

[0018] Step 4: After the clamping is completed, begin welding the ring chamber and ring chamber cover. First weld the side seams, and then weld the top seams.

[0019] Step 5: Adjust the opening angle of the folding arm during the welding of the top surface joint to prevent the folding arm from obstructing the welding torch;

[0020] Step 6: After welding is completed, pull up the adjusting rod, retract the folding arm, and remove the welded ring.

[0021] Step 7: Repeat steps 1, 2, 4, 5, and 6 when welding the next workpiece.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] This invention discloses a rapid-mount fiber optic gyroscope welding device and its method of use. The direct mounting method simplifies the construction process during ring welding, improving production efficiency and product consistency. The folding arm in this invention can be quickly retracted, avoiding the disassembly and assembly process required by existing welding fixtures. Workpiece mounting can be completed simply by retracting and extending the folding arm, shortening installation time. During use, the spring is in a compressed state, which can firmly press the workpiece to be welded. Because of the spring pressing, the inconsistent tightening force encountered during manual tightening in existing welding fixtures is avoided, ensuring consistent clamping force for each workpiece during mass production. This guarantees the consistency of fiber optic gyroscope accuracy and improves product yield. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the folded arm in the retracted state of a fiber optic gyroscope welding device for rapid mounting according to the present invention.

[0025] Figure 2 This is a schematic diagram of the folding arm in the open state of a fiber optic gyroscope welding device for rapid mounting according to the present invention.

[0026] Figure 3 This is a cross-sectional view of a fiber optic gyroscope welding device for rapid mounting according to the present invention;

[0027] Figure 4 This is a schematic diagram of the installation of the limiting nut in a quick-mount fiber optic gyroscope welding device and its usage method according to the present invention.

[0028] Figure 5 This is a perspective view of the fiber optic gyroscope welding device of the present invention after the installation is completed and the ring chamber to be welded is shown.

[0029] Figure 6 This is a cross-sectional view of the fiber optic gyroscope welding device of the present invention after the device has been installed and is ready for welding.

[0030] In the diagram: 1. Base shaft; 2. Adapter plate; 3. Spiral sleeve; 4. Limit nut; 5. Mounting nut; 6. Spring; 7. Adjusting rod; 8. Fixed arm; 9. Folding arm; 10. Ring chamber; 11. Ring chamber cover; 12. Pressure ring. Detailed Implementation

[0031] The technical solution of the present invention will be further described below with reference to specific embodiments:

[0032] like Figure 3 As shown, a quick-mount fiber optic gyroscope welding device includes an adapter plate 2, several screws, a base shaft 1, an adjusting rod 7, a fixing arm 8, two folding arms 9, a spiral sleeve 3, and a spring 6. The adapter plate 2 is annular, and an array of screws is arranged on the adapter plate 2. The adapter plate 2 is fixed to the base shaft 1 by screws. One end of the adjusting rod 7 is fixedly connected to the center of the fixing arm 8. A cylindrical cavity is provided inside the base shaft 1, and the other end of the adjusting rod 7 is placed inside the cylindrical cavity. Figure 1 and Figure 2 As shown, one end of the folding arm 9 is provided with a hinge. The hinges of the two folding arms 9 are rotatably connected to the two ends of the fixed arm 8, respectively. The spiral sleeve 3 is sleeved on the adjusting rod 7. The center of the end of the base shaft 1 near the conversion plate is provided with a threaded hole. The spiral sleeve 3 is connected to the threaded hole by threads. The end face diameter of the cylindrical cavity is larger than the diameter of the threaded hole. The spring 6 is sleeved on the adjusting rod 7. The end of the adjusting rod 7 located inside the base shaft 1 is connected to the mounting nut 5. The two ends of the spring 6 abut against the bottom end face of the spiral sleeve 3 and the mounting nut 5, respectively. The assembly steps of the welding device include: installing the adapter plate 2 onto the base shaft 1 and tightening it with screws; assembling the adjusting rod 7, the fixed arm 8, and the folding arm 9 into a whole; passing the adjusting rod 7 through the spiral sleeve 3 and then installing the spring 6; finally, installing the mounting nut 5 at the end of the adjusting rod 7; and finally installing the assembled whole into the threaded hole of the base shaft 1 to complete the assembly of the device. After the device is installed, the spring 6 is in a compressed state and can press the workpiece.

[0033] like Figure 4 As shown, the spiral sleeve 3 includes a fixedly connected spiral ring and spiral tube. A limiting nut 4 is provided between the end of the base shaft 1 and the spiral ring. The inner ring of the limiting nut 4 is provided with a thread that matches the spiral tube. The limiting nut 4 and the spiral tube are connected by threads to limit the position of the spiral sleeve 3 and prevent unintentional changes in the position of the spiral sleeve 3 during use. However, whether or not it is installed does not affect the realization of the function of the present invention.

[0034] like Figure 5 and Figure 6 As shown, a method for using a rapid-installation fiber optic gyroscope welding device includes the following steps:

[0035] Step 1: Assemble the ring chamber 10, ring chamber cover 11, and pressure ring 12 of the fiber optic gyroscope to be welded together. Pass one end of the welding device with the folding arm 9 through the hole in the middle of the ring chamber 10 and pull up the adjusting rod 7.

[0036] Step 2: When the fixed arm 8 is higher than the pressure ring 12, open the two folding arms 9 so that the distance between the outermost ends of the two folding arms 9 is greater than the diameter of the pressure ring 12, and loosen the adjusting rod 7.

[0037] Step 3: Adjust the depth of the spiral sleeve 3 into the base shaft 1 to increase the clamping force. When the clamping force required by the process is reached, tighten the limit nut 4 to fix the spiral sleeve 3.

[0038] Step 3: After the clamping is completed, begin welding the ring chamber 10 and the ring chamber cover 11. First weld the side seams, and then weld the top seams.

[0039] Step 4: Adjust the opening angle of the folding arm 9 during the welding of the top surface joint to prevent the folding arm 9 from obstructing the welding torch;

[0040] Step 5: After welding is completed, pull up the adjusting rod 7, retract the folding arm 9, and remove the welded ring chamber 10;

[0041] Step 7: Repeat steps 1, 2, 4, 5, and 6 when welding the next workpiece.

[0042] This embodiment is merely a further explanation of the present invention and is not intended to limit the present invention. Those skilled in the art can make non-inventive modifications to this embodiment as needed after reading this specification, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A rapid-installation fiber optic gyroscope welding device, characterized in that, The device includes an adapter plate, screws, a base shaft, an adjusting rod, a fixed arm, a folding arm, a spiral sleeve, and a spring. The adapter plate is fixed to the base shaft by screws. One end of the adjusting rod is fixedly connected to the center of the fixed arm. The base shaft has a cylindrical cavity, and the other end of the adjusting rod is disposed in the cylindrical cavity. The folding arm is hinged to the fixed arm. The spiral sleeve is sleeved on the adjusting rod. The center of the end of the base shaft near the adapter plate has a threaded hole, and the spiral sleeve is threadedly connected to the threaded hole. The spring is sleeved on the adjusting rod, and one end of the spring abuts against the bottom end face of the spiral sleeve. The method of using the rapid mounting fiber optic gyroscope welding device includes the following steps: Step 1: Assemble the ring chamber, ring chamber cover, and pressure ring of the fiber optic gyroscope to be welded together. Pass the end of the welding device with the folding arm through the hole in the middle of the ring chamber and pull up the adjusting rod. Step 2: When the fixed arm is higher than the pressure ring, open the two folding arms so that the distance between the outermost ends of the two folding arms is greater than the diameter of the pressure ring, and then loosen the adjusting rod. Step 3: Adjust the depth of the spiral sleeve into the base shaft to increase the clamping force. Once the required clamping force is reached, tighten the limit nut to fix the spiral sleeve. Step 4: After the clamping is completed, begin welding the ring chamber and ring chamber cover. First weld the side seams, then weld the top seams. Step 5: During the welding of the top seams, adjust the opening angle of the folding arm to prevent the folding arm from obstructing the welding torch. Step 6: After welding is completed, pull up the adjusting rod, retract the folding arm, and remove the welded ring. Step 7: Repeat steps 1, 2, 4, 5, and 6 when welding the next workpiece.

2. The fiber optic gyroscope welding device for rapid mounting according to claim 1, characterized in that, The folding arm has two parts, and one end of each folding arm is provided with a hinge. The hinges of the two folding arms are rotatably connected to the two ends of the fixed arm, respectively.

3. The fiber optic gyroscope welding device for rapid mounting according to claim 1, characterized in that, The adapter plate is ring-shaped, and there are several screws arranged in an array on the adapter plate.

4. The fiber optic gyroscope welding device for rapid mounting according to claim 1, characterized in that, The diameter of the end face of the cylindrical cavity is larger than the diameter of the threaded hole.

5. The fiber optic gyroscope welding device for rapid mounting according to claim 1, characterized in that, The adjusting rod is connected to a mounting nut at one end located inside the base shaft, and the spring abuts against the mounting nut.

6. The fiber optic gyroscope welding device for rapid mounting according to claim 1, characterized in that, After the device is installed, the spring is in a compressed state.

7. The fiber optic gyroscope welding device for rapid mounting according to claim 1, characterized in that, The spiral sleeve includes a fixedly connected spiral ring and spiral tube. A limiting nut is provided between the end of the base shaft and the spiral ring. The inner ring of the limiting nut is provided with a thread that matches the spiral tube. The limiting nut and the spiral tube are connected by threads.

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