Laser gyroscope electrode self-centering rapid indium sealing device and method

Abstract

The invention relates to a laser gyroscope electrode self-centering rapid indium sealing device and method, and belongs to the technical field of laser gyroscope indium sealing, the device comprises an indium sealing device base, a heating and pressurizing assembly, a resonant cavity fixing base, a cathode pressing block, an anode pressing block and a pressurizing screw, and self-centering is achieved through the resonant cavity fixing base; the cathode pressing block and the anode pressing block position the electrode, the pressurizing screw provides pressure, and the heating and pressurizing assembly provides heat to complete indium sealing. The problems that an existing indium sealing device cannot automatically position the electrode, a pre-pressing bench drill needs to be used for conducting indium sealing on the gyroscope electrode in advance, the steps are tedious, and the production efficiency is low are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of indium sealing for laser gyroscopes, and particularly relates to a device and method for automatically centering and quickly indium sealing the electrodes of a laser gyroscope. Background Technique

[0002] The resonant cavity of a laser gyroscope is the core of the gyroscope's operation, which is composed of a gyroscope cavity, electrodes, and a mirror sealed together. Both the mirror and the gyroscope cavity are made of glass, and the contact surfaces of both need to be polished. Through intermolecular forces, the mirror is firmly attached to the gyroscope cavity. The electrodes are made of metal, and indium wires with good ductility and adhesiveness are used to be sealed to the gyroscope cavity by applying pressure and heat. In order to achieve high-reliability sealing performance, the following two conditions need to be met during indium sealing: (1) The indium wire needs to be used within a certain time after special treatment, otherwise it will affect the adhesiveness between indium and the gyroscope cavity; (2) The electrodes need to be heated and a certain pressure needs to be applied during indium sealing to ensure the final thickness of the indium layer.

[0003] Existing synchronous indium sealing devices cannot automatically position the electrodes and the gyroscope cavity. It is necessary to use a pre-pressing bench drill to pre-indium seal the gyroscope electrodes, and the operation steps are cumbersome, which affects production efficiency. Summary of the Invention

[0004] In order to overcome the deficiencies in the prior art, the present invention provides a device and method for automatically positioning and quickly synchronously indium sealing the electrodes of a laser gyroscope, which solves the problems that existing indium sealing devices cannot automatically position the electrodes and need to use a pre-pressing bench drill to pre-indium seal the gyroscope electrodes, resulting in cumbersome steps and low production efficiency.

[0005] The above object of the present invention is mainly achieved through the following technical solutions:

[0006] A device for automatically centering and quickly indium sealing the electrodes of a laser gyroscope includes an indium sealing device base, a heating and pressurizing assembly, a resonant cavity fixing base, a cathode pressing block, an anode pressing block, and a pressurizing assembly. The heating and pressurizing assembly is fixed on the indium sealing device base and is used to heat the electrodes. The cathode pressing block and the anode pressing block are respectively arranged on multiple groups of heating and pressurizing assemblies. The cathode pressing block and the anode pressing block are respectively connected to the cathode and anode of the laser gyroscope and are used to cooperate with the heating and pressurizing assembly for indium sealing. The resonant cavity fixing base is arranged at the center of the indium sealing device base and is used to fix the laser gyroscope resonant cavity during indium sealing. The resonant cavity fixing base and the indium sealing device base are coaxially fixed, and the resonant cavity fixing base can rotate around the axis. The pressurizing assembly is used to connect the heating and pressurizing assembly and the indium sealing device base to provide indium sealing pressure.

[0007] The base of the indium sealing device includes a mounting base plate, a track slider, an adjustable pressure fixing seat, a pressure screw fixing block, a heat insulation plate, and a heating component seat. Among them, the heat insulation plate is installed on the mounting base plate to isolate the evaporated lubricating oil generated by the track slider in the high-temperature state. The adjustable pressure fixing seat is fixed on the mounting base plate, the pressure screw fixing block is fixed on the adjustable pressure fixing seat, the pressure component connects the heating and pressurizing component and the pressure screw fixing block. A chute is provided on the adjustable pressure fixing seat, the track slider is arranged in the chute, a through hole is provided on the heat insulation plate, and the heating component seat passes through the through hole and is connected to the track slider. The heating component seat slides in the through hole along with the track slider. Multiple groups of track sliders, adjustable pressure fixing seats, pressure screw fixing blocks, and heating component seats are arranged circumferentially. The heating and pressurizing component is arranged on the heating component seat, and the position of the heating and pressurizing component is adjusted through the track slider.

[0008] The heating and pressurizing component includes a heating block, heat insulation side plates, a heat insulation base, a fixed rear plate, and a pressure support. Among them, the heating block is used for heating and indium sealing. Two heat insulation side plates are respectively arranged on both sides of the heating block, the fixed rear plate is arranged on the opposite side of the heating block and is connected to the two heat insulation side plates on both sides respectively. The pressure support is installed on the fixed rear plate through screws and is used for installing the cathode block or the anode block. The heat insulation base is divided into two pieces and is respectively fixed on the heating block and the fixed rear plate. A slot is provided on the heat insulation base to realize the sliding connection between the pressure component and the heating component seat.

[0009] It also includes a fixing rod. Limiting slots are provided on the heat insulation side plates, the heating block, and the fixed rear plate. The fixing rod is fixed through the limiting slots, and the heat insulation side plates are connected to the heating block and the fixed rear plate through the fixing rod.

[0010] It also includes a heating ceramic sheet, which is fixed on the heating block and is used for heating the heating block.

[0011] The upper part of the heating block is provided with a slot for placing the laser gyro pumping anode.

[0012] The resonant cavity fixing base includes a resonant cavity installation platform, a central hole fixing column, and a fixing bracket. Through holes are provided on the resonant cavity installation platform, the central hole fixing column, and the fixing bracket. The central axis passes through the through holes in sequence and is fixed on the base of the indium sealing device. The resonant cavity installation platform, the central hole fixing column, and the fixing bracket are fixedly connected. During the indium sealing process, the central axis of the resonant cavity fixing base coincides with the central axis of the laser gyro resonant cavity.

[0013] It includes three groups of heating and pressurizing components, which are evenly distributed circumferentially. 2 cathode blocks and 1 anode block or 1 cathode block and 2 anode blocks are respectively arranged on the three groups of heating and pressurizing components.

[0014] A method for indium sealing of a laser gyro electrode self-centering and rapid indium sealing device, comprising the following steps:

[0015] (1) Take out the resonator fixing base, place the laser gyro resonator pre-installed with electrodes and indium rings on the resonator fixing base, and install it together with the resonator fixing base at the central hole of the indium sealing device base;

[0016] (2) Install the cathode pressing block and the anode pressing block on the laser gyro cathode and the laser gyro anode respectively, tighten the pressurizing assembly, so that the heating and pressurizing assembly applies a centripetal pressure to the gyro. The central axis of the laser gyro coincides with the central axis of the device. The cathode pressing block and the anode pressing block equipped with electrodes are in full contact with the heating pressing block, ensuring that the electrode indium sealing pressurizing direction is perpendicular to the indium sealing surface of the laser gyro resonator, and realizing self-centering during the indium sealing process;

[0017] (3) Heat the heating and pressurizing assembly to make the indium ring reach the indium sealing temperature; apply a fixed torque to the pressurizing assembly (6) to make the indium sealing surface size meet the process requirements;

[0018] (4) Keep the pressure and temperature until the indium sealing process is completed, cool the device to room temperature, loosen the pressurizing assembly (6), remove the cathode pressing block and the anode pressing block, and remove the gyro.

[0019] In the step (3), the heating method of the heating and pressurizing assembly is as follows: the heating and pressurizing assembly includes a heating pressing block and a heating ceramic sheet. The heating ceramic sheet is fixed on the heating pressing block. The heating ceramic sheet is electrified through a special temperature control device, and the heating ceramic sheet heats the heating pressing block, and the indium ring reaches the indium sealing temperature through the heating pressing block.

[0020] Compared with the prior art, the present invention has at least the following beneficial effects:

[0021] (1) The present invention adopts a modular design, which is convenient for daily maintenance and saves production costs at the same time.

[0022] (2) The present invention can realize self-centering indium sealing of a triangular laser gyro, without additional pre-indium sealing operation steps, and improves production efficiency.

[0023] (3) In the embodiment of the present invention, an adjustable heating and pressurizing assembly is preferably adopted, which can adapt to laser gyros of various sizes. Description of the Drawings

[0024] Figure 1 It is a schematic diagram of the laser gyro electrode self-centering and rapid indium sealing device of the present invention;

[0025] Figure 2 It is a top view of the laser gyro electrode self-centering and rapid indium sealing device of the present invention;

[0026] Figure 3Side view of the self - centering and rapid indium - sealing device for the electrodes of the laser gyroscope of the present invention;

[0027] Figure 4 Schematic diagram of the base of the indium - sealing device of the present invention;

[0028] Figure 5 Exploded view of the base of the indium - sealing device of the present invention;

[0029] Figure 6 Schematic diagram of the heating and pressurizing assembly of the present invention;

[0030] Figure 7 Exploded view of the heating and pressurizing assembly of the present invention;

[0031] Figure 8 Schematic diagram of the fixed base of the resonator of the present invention. Detailed implementation manners

[0032] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments:

[0033] As Figure 1-3 shown, a self - centering and rapid indium - sealing device for the electrodes of a laser gyroscope according to the present invention includes: a base 1 of the indium - sealing device, a heating and pressurizing assembly 2, a fixed base 3 of the resonator, a cathode pressure block 4, an anode pressure block 5, and a pressurizing assembly 6. Among them, the heating and pressurizing assembly 2 is fixed on the base 1 of the indium - sealing device and is used to heat the electrodes to reach the indium - sealing temperature. The cathode pressure block 4 is placed between the heating and pressurizing assembly 2 and the cathode of the laser gyroscope, and its external dimensions match those of the cathode of the laser gyroscope, and it cooperates with the heating and pressurizing assembly 2 for indium - sealing. The anode pressure block 5 is placed between the heating and pressurizing assembly 2 and the anode of the laser gyroscope, and its external dimensions match those of the anode of the laser gyroscope, and it cooperates with the heating and pressurizing assembly 2 for indium - sealing. The fixed base 3 of the resonator is placed at the center of the base 1 of the indium - sealing device and is used to fix the resonator of the laser gyroscope during the indium - sealing process. The fixed base 3 of the resonator and the base 1 of the indium - sealing device are coaxially fixed, and the fixed base 3 of the resonator can rotate around the axis. The pressurizing assembly 6 is installed on the heating and pressurizing assembly 2 and is used to connect the heating and pressurizing assembly 2 and the base 1 of the indium - sealing device and provide the necessary pressure for indium - sealing.

[0034] The pressurizing assembly 6 is a pressurizing screw.

[0035] As Figure 4-5As shown in the figure, the base 1 of the indium sealing device includes a mounting base plate 7, track sliders 8, adjustable pressure fixing seats 9, pressure screw fixing blocks 10, heat insulation plates 11, and heating component seats 12. Among them, the track sliders 8 are placed on the mounting base plate 7 and are evenly arranged circumferentially according to the electrode distribution of the triangular laser gyro. The heat insulation plate 11 is installed on the mounting base plate 7 to isolate the evaporated lubricating oil that the track sliders 8 may generate in the high-temperature state. The adjustable pressure fixing seats 9 are installed on the mounting base plate 7 by screws. The pressure screw fixing blocks 10 are installed on the adjustable pressure fixing seats 9 by screws. The pressurizing component 6 connects the heating and pressurizing component 2 and the pressure screw fixing block 10. The heating component seat 12 passes through the heat insulation plate 11 and is installed on the track sliders 8 by screws.

[0036] As Figure 6-7 shown in the figure, the heating and pressurizing component 2 includes: a heating press block 13, heat insulation side plates 14, fixing rods 15, heating ceramic sheets 16, a heat insulation base 17, a fixing rear plate 18, and a pressure support 19. Among them, the upper part of the heating press block 13 is grooved and can be used to place the extraction anode of the laser gyro. The heating ceramic sheets 16 are bonded to the heating press block 13 with heat-conducting glue to heat the heating press block 13. The heat insulation side plates 14 are installed between the heating press block 13 and the fixing rear plate 18 through the fixing rods 15. The heat insulation base 17 is divided into two pieces and is respectively fixed to the heating press block 13 and the fixing rear plate 18 by screws. Both pieces of the heat insulation base 17 are provided with grooves to facilitate the sliding connection between the heating and pressurizing component 2 and the heating component seat 12. The pressure support 19 is installed on the fixing rear plate 18 by screws and is used to install the cathode press block 4 and the anode press block 5.

[0037] The heating and pressurizing component 2 is installed on the heating component seat 12 and is connected to the track sliders 8 through the heating component seat 12. The position of the three track sliders 8 can be adjusted to make the whole device applicable to laser gyros of different sizes. Each heating and pressurizing component 2 applies a centripetal pressure to the laser gyro. Under the combined action of the centripetal pressures evenly distributed circumferentially, the central axis of the laser gyro coincides with the central axis of the device, and the cathode press block 4 and the anode press block 5 equipped with electrodes are in full contact with the heating press block 13, so that the central axis of the laser gyro electrodes automatically coincides with the moving direction of the track sliders 8, ensuring that the indium sealing pressurizing direction of the electrodes is perpendicular to the indium sealing surface of the laser gyro resonator cavity, and realizing the self-centering of the device during the indium sealing process.

[0038] As Figure 8 shown in the figure, the resonator fixing base 3 includes a resonator mounting platform 20, a central hole fixing column 21, and a fixing bracket 22. Through holes are provided on the resonator mounting platform 20, the central hole fixing column 21, and the fixing bracket 22. The central axis passes through the through holes in sequence and is fixed on the base 1 of the indium sealing device. The resonator mounting platform 20, the central hole fixing column 21, and the fixing bracket 22 are fixedly connected. During the indium sealing process, the central axis of the resonator fixing base 3 coincides with the central axis of the laser gyro resonator cavity.

[0039] A method for rapid indium sealing with self - centering of laser gyro electrodes includes the following steps:

[0040] Take out the resonant cavity fixing base 3 from the device, place the laser gyro resonant cavity with pre - installed electrodes and indium rings on the resonant cavity fixing base 3, and install it together with the resonant cavity fixing base 3 at the central hole of the indium sealing device base 1.

[0041] Install the cathode pressing block 4 and the anode pressing block 5 on the cathode and anode of the laser gyro respectively. Tighten the three pressurizing components 6 so that each heating and pressurizing component 2 applies a centripetal pressure to the gyro. Under the combined action of the centripetal pressures evenly distributed circumferentially, the central axis of the laser gyro coincides with the central axis of the device, and the cathode pressing block 4 and the anode pressing block 5 with electrodes are in full contact with the heating pressing block 13, making the central axis of the laser gyro electrodes automatically coincide with the moving direction of the track slider 8, ensuring that the indium sealing pressurizing direction is perpendicular to the indium sealing surface of the laser gyro resonant cavity, and realizing self - centering during the indium sealing process of this device.

[0042] Energize the heating ceramic sheet 16 through a special temperature control device. The heat is transferred to the indium ring through the heating pressing block 13, the cathode pressing block 4 and the anode pressing block 5 to make it reach the indium sealing temperature; apply a fixed torque to the pressurizing component 6 to ensure that the cathode pressing block 4 and the anode pressing block 5 can apply sufficient pressure to the indium ring to make the size of the indium sealing surface meet the process requirements.

[0043] Keep the pressure and temperature according to the process until the end of the indium sealing process. Cool the device to room temperature, loosen the pressurizing component 6, remove the cathode pressing block 4 and the anode pressing block 5, and then remove the gyro.

[0044] As described above, it is only the best specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any change or replacement that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

[0045] The content not detailedly described in the specification of the present invention belongs to the well - known technology of those skilled in the art.

Claims

1. A laser gyro electrode self-centering rapid indium sealing device, characterized in that: It includes an indium sealing device base (1), a heating and pressurizing assembly (2), a resonant cavity fixing base (3), a cathode pressing block (4), an anode pressing block (5) and a pressurizing assembly (6). Among them, the heating and pressurizing assembly (2) is fixed on the indium sealing device base (1) for heating the electrodes. The cathode pressing block (4) and the anode pressing block (5) are respectively arranged on multiple groups of heating and pressurizing assemblies (2), and the cathode pressing block (4) and the anode pressing block (5) are respectively connected to the laser gyro cathode and the laser gyro anode for cooperating with the heating and pressurizing assembly (2) to perform indium sealing. The resonant cavity fixing base (3) is arranged at the center of the indium sealing device base (1) for fixing the laser gyro resonant cavity during the indium sealing process. The resonant cavity fixing base (3) and the indium sealing device base (1) are coaxially fixed, and the resonant cavity fixing base (3) can rotate around the axis. The pressurizing assembly (6) is used to connect the heating and pressurizing assembly (2) and the indium sealing device base (1) to provide indium sealing pressure.

2. A self - centering and rapid indium sealing device for a laser gyroscope electrode according to claim 1, characterized in that: The indium sealing device base (1) includes a mounting base plate (7), a track slider (8), an adjustable pressurizing fixing seat (9), a pressurizing screw fixing block (10), a heat insulation plate (11) and a heating assembly seat (12). Among them, the heat insulation plate (11) is installed on the mounting base plate (7) for isolating the evaporated lubricating oil generated by the track slider (8) in the high-temperature state. The adjustable pressurizing fixing seat (9) is fixed on the mounting base plate (7), the pressurizing screw fixing block (10) is fixed on the adjustable pressurizing fixing seat (9), the pressurizing assembly (6) connects the heating and pressurizing assembly (2) and the pressurizing screw fixing block (10). A chute is provided on the adjustable pressurizing fixing seat (9), the track slider (8) is arranged in the chute, a through hole is provided on the heat insulation plate (11), and the heating assembly seat (12) passes through the through hole and is connected to the track slider (8). The heating assembly seat (12) slides in the through hole along with the track slider (8). Multiple groups of track sliders (8), adjustable pressurizing fixing seats (9), pressurizing screw fixing blocks (10) and heating assembly seats (12) are arranged circumferentially, and the heating and pressurizing assembly (2) is arranged on the heating assembly seat (12), and the position of the heating and pressurizing assembly (2) is adjusted by the track slider (8).

3. A laser gyro electrode self-centering and rapid indium sealing device according to claim 2, characterized in that: The heating and pressurizing assembly (2) includes a heating pressing block (13), heat insulation side plates (14), a heat insulation base (17), a fixed rear plate (18) and a pressure support (19). Among them, the heating pressing block (13) is used for heating and indium sealing. Two heat insulation side plates (14) are respectively arranged on both sides of the heating pressing block (13), the fixed rear plate (18) is arranged on the opposite side of the heating pressing block (13) and is connected to the two heat insulation side plates (14) respectively on both sides. The pressure support (19) is installed on the fixed rear plate (18) by screws for installing the cathode pressing block (4) or the anode pressing block (5). The heat insulation base (17) is divided into two pieces and is respectively fixed on the heating pressing block (13) and the fixed rear plate (18). A slot is provided on the heat insulation base (17) for realizing the sliding connection between the pressurizing assembly (2) and the heating assembly seat (12).

4. A laser gyro electrode self-centering and rapid indium sealing device according to claim 3, characterized in that: It further includes a fixing rod (15). Limiting grooves are provided on the heat insulation side plates (14), the heating pressing blocks (13) and the fixing rear plate (18). The fixing rod (15) is fixed through the limiting grooves, and the heat insulation side plates (14) are connected to the heating pressing blocks (13) and the fixing rear plate (18) through the fixing rod (15).

5. A laser gyro electrode self-centering and rapid indium sealing device according to claim 3, characterized in that: It further includes a heating ceramic sheet (16). The heating ceramic sheet (16) is fixed on the heating pressing block (13) and is used for heating the heating pressing block (13).

6. A self-centering and rapid indium sealing device for a laser gyro electrode according to claim 3, characterized in that: The upper part of the heating pressing block (13) is grooved for placing the laser gyro air extraction anode.

7. A laser gyro electrode self-centering and rapid indium sealing device according to claim 1, characterized in that: The resonant cavity fixing base (3) includes a resonant cavity installation platform (20), a central hole fixing column (21) and a fixing bracket (22). Through holes are provided on the resonant cavity installation platform (20), the central hole fixing column (21) and the fixing bracket (22). The central axis sequentially passes through the through holes and is fixed on the indium sealing device base (1). The resonant cavity installation platform (20), the central hole fixing column (21) and the fixing bracket (22) are fixedly connected. During the indium sealing process, the central axis of the resonant cavity fixing base (3) coincides with the central axis of the laser gyro resonant cavity.

8. A self-centering and rapid indium sealing device for a laser gyroscope electrode according to claim 1, characterized in that: It includes three groups of heating and pressing assemblies (2). The three groups of heating and pressing assemblies (2) are evenly distributed in the circumferential direction. 2 cathode pressing blocks (4) and 1 anode pressing block (5) or 1 cathode pressing block (4) and 2 anode pressing blocks (5) are respectively arranged on the three groups of heating and pressing assemblies (2).

9. A method for indium sealing of the indium sealing device with self - centering of laser gyro electrodes according to any one of claims 1 - 8, characterized in that: It includes the following steps: (1). Take out the resonant cavity fixing base (3), place the laser gyro resonant cavity pre-installed with electrodes and indium rings on the resonant cavity fixing base (3), and install it together with the resonant cavity fixing base (3) at the central hole of the indium sealing device base (1); (2). Install the cathode pressing block (4) and the anode pressing block (5) on the laser gyro cathode and the laser gyro anode respectively, tighten the pressing assembly (6), so that the heating and pressing assembly (2) applies a centripetal pressure to the gyro. The central axis of the laser gyro coincides with the central axis of the device. The cathode pressing block (4) and the anode pressing block (5) equipped with electrodes are in full contact with the heating pressing block (13), ensuring that the indium sealing and pressing direction of the electrodes is perpendicular to the indium sealing surface of the laser gyro resonant cavity, and realizing self-centering during the indium sealing process; (3). Heat the heating and pressing assembly (2) to make the indium ring reach the indium sealing temperature; apply a fixed torque to the pressing assembly (6) to make the size of the indium sealing surface meet the process requirements; (4). Keep the pressure and heat until the indium sealing process ends, cool the device to room temperature, loosen the pressing assembly (6), remove the cathode pressing block (4) and the anode pressing block (5), and remove the gyro.

10. The indium sealing method according to claim 9, characterized in that: In the step (3), the heating method of the heating and pressing assembly (2) is as follows: The heating and pressing assembly (2) includes a heating pressing block (13) and a heating ceramic sheet (16). The heating ceramic sheet (16) is fixed on the heating pressing block (13). The heating ceramic sheet (16) is electrified through a special temperature control device, and the heating ceramic sheet (16) heats the heating pressing block (13), and the indium ring reaches the indium sealing temperature through the heating pressing block (13).

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