An improved device and method for the optical aperture wire winding process of a laser gyro

Abstract

The application belongs to the technical field of optical precision machining, and particularly relates to a device and method for improving the laser gyroscope diaphragm string polishing process. The device comprises a part clamping and detection platform and a string polishing movement platform. The part clamping and detection platform comprises a light source system, the light source system is fixed on a fixed plate through a connecting piece, the light source system is stretched and contracted in horizontal and vertical directions through two motors, a long-axis measurement camera is fixed on one side of the light source system on the fixed plate through a connecting piece, and a short-axis measurement camera is fixed on the back of the fixed plate through a connecting piece. A workpiece clamping mechanism is fixed on the fixed plate through a connecting piece, and the workpiece is automatically clamped through a motor. A polishing liquid storage tank is fixed on the fixed plate through a connecting piece, and the polishing liquid flows through a peristaltic pump through a rubber hose and flows out from a nozzle.

Description

Technical Field

[0001] This invention belongs to the field of optical precision processing technology, specifically relating to an improved device and method for the rope-throwing process of laser gyroscope apertures. Background Technology

[0002] Laser gyroscopes are widely used in aerospace, maritime, aviation, strategic weaponry, and civilian autonomous navigation fields due to their advantages of high precision, high reliability, and fast start-up. Inside the laser gyroscope cavity, multiple aperture structures form the optical transmission channel, with the elliptical aperture requiring the highest precision.

[0003] An aperture is a small, elliptical cylindrical hole located deep within the resonant cavity of a laser gyroscope. Its main function is to limit the mode of polarized light and reduce diffraction loss. Therefore, the machining accuracy of the aperture's size and shape has a significant impact on the final performance of the laser gyroscope. The main machining accuracy indicators for the aperture are the minor axis dimension and the ratio of the major axis to the minor axis. Currently, the industry's main method for machining apertures is to first obtain the basic hole shape through CNC drilling and milling, and then polish it using a wire polishing process. This polishes the hole wall and enlarges the overall size of the hole to meet the final requirements.

[0004] The existing patents in this field are CN104708524B "A method for polishing the aperture hole of a laser gyroscope cavity", CN218488085U "An automatic physical polishing device for the aperture hole of a microcrystalline glass optical component", CN115837611A "An automatic physical polishing device for the aperture hole of a laser gyroscope resonant cavity", and CN208826312U "An aperture polishing fixture". The methods described in the above patents are all to brighten the aperture hole wall and enlarge the aperture size as a whole through rope polishing. However, the problem is that the above patents cannot achieve individual control of the major axis and minor axis of the elliptical aperture hole. The final elliptical aperture hole shape formed by the process depends entirely on the basic elliptical hole shape before polishing. The ratio of the major axis to the minor axis cannot be corrected in the aperture polishing process. Summary of the Invention

[0005] The technical problem solved by this invention: This invention proposes an improved method and apparatus for polishing the aperture rope of a laser gyroscope. By designing visual inspection devices along the major and minor axes of the aperture, real-time independent monitoring of the dimensions of the major and minor axes is achieved. During the aperture polishing process, the major or minor axis is individually offset, enabling individual control of the dimensions of the elliptical aperture hole's major or minor axis, thereby achieving online correction of the major-minor axis ratio. By designing a rope-pulling mechanism and a tension detection mechanism at both ends of the polishing rope, real-time control of the polishing rope's tension is achieved.

[0006] The technical solution of the present invention:

[0007] In a first aspect, the present invention provides an apparatus for improving the rope throwing process of laser gyroscope apertures, the apparatus comprising: a parts clamping and inspection platform 1 and a rope throwing motion platform 2;

[0008] The parts clamping and inspection platform 1 includes a light source system 3, which is fixed to the fixed plate 11 by a connector. The light source system 3 is extended and retracted in the horizontal and vertical directions by two motors. The long axis measuring camera 4 is fixed to one side of the light source system 3 on the fixed plate 11 by a connector, and the short axis measuring camera 5 is fixed to the back of the fixed plate 11 by a connector.

[0009] The workpiece clamping mechanism 6 is fixed to the fixed plate 11 by a connector and automatically clamps the workpiece by a motor. The polishing liquid storage tank 7 is fixed to the fixed plate 11 by a connector and the polishing liquid flows through the peristaltic pump 8 via a rubber hose and flows out from the nozzle 9.

[0010] Furthermore, the parts clamping and inspection platform 1 can move up and down and back and forth in the horizontal Y direction and the vertical Z direction, realizing relative movement with the rope throwing motion platform 2. The rope throwing motion platform 2 itself can reciprocate in the X direction, so that the polishing rope can be offset to move in the Y or Z direction, realizing the individual polishing and enlarging of the major or minor axis of the elliptical aperture hole.

[0011] Furthermore, the rope throwing motion platform 2 includes a tension adjustment mechanism 10. The tension adjustment mechanism 10 rotates the rope winder via a motor. The polishing rope passes through the centering sleeve 12 and is fixedly connected to the polishing rope hook 14. A tension sensor 13 is installed on the polishing rope hook 14 to sense and output the tension value of the polishing rope.

[0012] Furthermore, the light source system 3 has an L-shaped structure and is equipped with a Y-direction forward light source module and a Z-direction forward light source module;

[0013] When in use, the Y-direction light source module descends to the height of the large central hole of the workpiece along the negative Z-axis with the lifting mechanism, and then extends into the large central hole along the positive Y-axis. Its emitted light is aligned with the long axis measuring camera 4 above.

[0014] The Z-direction light source module descends along the Z-axis to the height of the workpiece aperture via the lifting mechanism, and its emitted light is aligned with the short-axis measuring camera 5 on the back through a small hole on the fixed plate 11.

[0015] Furthermore, the workpiece clamping mechanism 6 is a double-ended motion design structure, which ensures that the aperture hole in the laser gyroscope cavity parts of different shapes and sizes is always located at the clamping center position. At the same time, by using pads of different thicknesses, the position of the aperture hole in the laser gyroscope cavity parts of different shapes and sizes can always be at the same height position.

[0016] Secondly, the present invention provides an improved method for the cable-throwing process of a laser gyroscope aperture, the method being implemented using the aforementioned apparatus, the method comprising:

[0017] S1, preparation stage: The workpiece is the laser gyroscope cavity part to be processed, which is clamped in the workpiece clamping mechanism 6. At this time, the aperture is located at the upper center of the cavity and the direction is horizontal.

[0018] S2, take out the polishing rope, fix one end of it to the polishing rope hook 14, and pass the other end through the aperture hole, then through the centering sleeve 12, and hang it on the rope winder 11.

[0019] S3, after the processing is started, the tension adjustment mechanism 10 drives the rope winder 11 to rotate and tighten the polishing rope. At the same time, at the other end of the polishing rope, the tension sensor 13 senses that the tension value gradually increases. When it increases to the preset limit, the tension adjustment mechanism 10 stops working and the polishing rope is tightened.

[0020] S4, then the light source system 3 starts to work. After the two light source modules are lowered to the specified height by the telescopic mechanism, the two light sources are aligned with the long axis measuring camera 4 and the short axis measuring camera 5 respectively, and the long axis and short axis dimensions of the aperture hole are photographed and measured.

[0021] S5, the stirrer in the polishing liquid storage tank 7 works, the peristaltic pump 8 rotates periodically, spraying the polishing liquid onto the polishing rope through the nozzle, and then the rope throwing motion platform 2 performs X-axis reciprocating motion, the polishing rope polishes the wall of the elliptical aperture, and at the same time, each reciprocation calculates and updates the ratio of the major axis and minor axis of the aperture.

[0022] S6, the working mode of the polishing rope is changed according to the ratio of the major axis and minor axis of the aperture hole, the working mode including full contour machining and offset machining.

[0023] Furthermore, in S6, the working mode of the polishing rope is changed according to the ratio of the major axis and minor axis of the aperture hole. This working mode includes full-contour machining and offset machining, specifically including:

[0024] When the length or length axis reaches the preset value, the latest length-to-length ratio is judged. When the ratio is higher or lower than the target range, the device alarms and notifies personnel to partially cut the number of polishing rope strands.

[0025] Then, adjust the major or minor axis proportions:

[0026] When the ratio value is higher than the target range, the part clamping and inspection platform 1 performs symmetrical offset movement in the vertical Z direction to realize the separate processing of the short axis of the elliptical aperture hole, increase the size of the short axis, and thereby realize the reduction correction of the ratio between the major and minor axes.

[0027] When the ratio is lower than the target range, the part clamping and inspection platform 1 performs symmetrical offset movement in the horizontal Y direction to achieve separate processing of the major axis of the elliptical aperture hole, increase the size of the major axis, and thereby increase and correct the ratio between the major and minor axes.

[0028] Furthermore, the method also includes:

[0029] During the polishing process, the tension sensor 13 detects and transmits the tension value of the polishing rope in real time, and the tension adjustment mechanism 10 automatically tightens the polishing rope according to the tension value of the polishing rope.

[0030] This invention provides an improved method and apparatus for polishing laser gyroscope apertures using a two-way online visual inspection mechanism. The method utilizes a pull-string mechanism and a tension detection mechanism at both ends of the polishing rope to achieve real-time control of the rope's tension. Furthermore, by individually offsetting the major or minor axis, the method enables individual control of the elliptical aperture's major or minor axis dimensions, thereby achieving online correction of the major-minor axis ratio. Attached Figure Description

[0031] Figure 1 A schematic diagram of the structure of the aperture rope throwing process device;

[0032] Figure 2 A schematic diagram of a parts clamping and inspection platform;

[0033] Figure 3 A schematic diagram of the back structure of the parts clamping and inspection platform;

[0034] Figure 4 This is a schematic diagram of the light source system structure;

[0035] Figure 5 This is a schematic diagram of the polishing rope clamping mechanism. Detailed Implementation

[0036] The working principle and usage of the present invention will be further explained below with reference to the embodiments.

[0037] This invention provides a method and apparatus for improving the wire polishing process of laser gyroscope apertures. By monitoring the ratio of major and minor axes in real time during polishing of the elliptical aperture, and using an offset processing method, the ratio of major and minor axes is automatically corrected online.

[0038] A method and apparatus for improving the cable polishing process of laser gyroscope apertures includes a bidirectional online visual inspection mechanism for elliptical apertures, comprising a light source and an imaging system, enabling independent monitoring of the dimensional changes of the major and minor axes of the elliptical aperture during processing, as well as real-time calculation and monitoring of the ratio of the major and minor axes.

[0039] A method and apparatus for improving the polishing process of laser gyroscope aperture ropes includes a real-time detection and automatic adjustment mechanism for polishing rope tension. By detecting the change in tension value of the polishing rope during grinding and polishing operations within the elliptical aperture hole, the mechanism automatically feeds back the tension change information to determine the degree of tension of the polishing rope and automatically drives the rope-pulling mechanism to tighten or loosen the polishing rope, thereby controlling the polishing friction force of the elliptical aperture hole wall.

[0040] A method and apparatus for improving the cable-jet process of laser gyroscope apertures includes a relative motion mechanism between a part clamping device and a cable-drawing device. By obtaining real-time changes in the major and minor axis dimensions of the elliptical aperture through a bidirectional online visual inspection mechanism, the ratio of the major and minor axes is dynamically calculated. When the ratio is below a target range, the cable-drawing device performs a symmetrical offset movement in the horizontal Y direction to separately process the major axis of the elliptical aperture, increasing its size. When the ratio is above the target range, the cable-drawing device performs a symmetrical offset movement in the vertical Z direction to separately process the minor axis of the elliptical aperture, increasing its size, thereby correcting the ratio of the major and minor axes.

[0041] A method and apparatus for improving the laser gyroscope aperture wire polishing process includes an automatic polishing slurry supply mechanism. By designing a stirrer in the storage tank, the concentration uniformity of the polishing slurry is ensured, and the periodic spray supply of polishing slurry is achieved by a peristaltic pump.

[0042] like Figure 1 As shown, the present invention consists of a parts clamping and inspection platform 1 and a rope throwing motion platform 2.

[0043] like Figure 2 , Figure 3 , Figure 4 As shown, the parts clamping and inspection platform 1 includes a light source system 3, such as... Figure 3 As shown, the light source system 3 is fixed to the fixed plate 11 by a connector. The light source system 3 can perform horizontal and vertical telescopic movements by a motor. The long axis measuring camera 4 and the short axis measuring camera 5 are fixed to the fixed plate 11 by a connector. The workpiece clamping mechanism 6 is fixed to the fixed plate 11 by a connector and automatically clamps the workpiece by a motor. The polishing liquid storage tank 7 is fixed to the fixed plate 11 by a connector and is equipped with a stirrer. The polishing liquid flows through the peristaltic pump 8 via a rubber hose and flows out from the nozzle 9.

[0044] like Figure 5 As shown, the rope throwing platform 2 includes a tension adjustment mechanism 10, which can be controlled by a motor rotating a rope winder 11, a centering sleeve 12, and a tension sensor 13 fixedly connected to a polishing rope 14, capable of sensing and outputting the tension value. Figure 1As shown, the parts clamping and inspection platform 1 can move up and down and back and forth by a motor. The movement direction is horizontal Y and vertical Z. It can move relative to the rope throwing motion platform 2, so that the polishing rope can be offset in the Y or Z direction. Combined with the X-direction reciprocating motion of the rope throwing motion platform 2 itself, it can realize the individual polishing and enlargement processing of the major or minor axis of the elliptical aperture hole.

[0045] like Figure 2 As shown, in the preparation stage, the workpiece is the laser gyroscope cavity part to be processed, which is clamped in the workpiece clamping mechanism 6. At this time, the aperture is located at the upper center of the cavity, and the direction is horizontal. The workpiece clamping mechanism 6 has a double-end motion design structure to ensure that the aperture in the laser gyroscope cavity parts of different sizes is always located at the clamping center position. At the same time, by using pads of different thicknesses, the position of the aperture in the laser gyroscope cavity parts of different sizes can always be at the same height position.

[0046] like Figure 1 and Figure 5 As shown, take out the polishing rope, fix one end to the polishing rope hook 14, and pass the other end through the aperture hole, then through the centering sleeve 12, and hang it on the rope winder 11.

[0047] After the processing is started, the tension adjustment mechanism 10 drives the rope winder 11 to rotate, tightening the polishing rope. At the same time, at the other end of the polishing rope, the tension sensor 13 senses that the tension value is gradually increasing. When it increases to the preset limit, the tension adjustment mechanism 10 stops working, and the polishing rope is tightened. Then, the light source system 3 starts working. After the two light sources descend to the specified height with the telescopic mechanism, the long axis light source is extended into the central large hole of the cavity part along the Y direction. At this time, the two light sources are aligned with the long axis measuring camera 4 and the short axis measuring camera 5, respectively, to take pictures and measure the long axis and short axis dimensions and calculate the ratio value. Then, the stirrer in the polishing liquid storage tank 7 works, and the peristaltic pump 8 rotates periodically, spraying the polishing liquid onto the polishing rope through the nozzle. Then, the rope throwing motion platform 2 performs X-axis reciprocating motion, and the polishing rope polishes the elliptical aperture hole wall. At the same time, with each reciprocation, the vision inspection system takes pictures and measures the long axis and short axis dimensions, calculates and updates the long axis and short axis ratio value.

[0048] When the major or minor axis dimensions reach the preset value, the latest major-minor axis ratio is judged. If the ratio value is higher or lower than the target range, the device alarms and notifies personnel to partially cut the polishing rope strands, and then correct the major-minor axis ratio. When the ratio value is higher than the target range, the rope pulling device performs symmetrical offset movement in the vertical Z direction to achieve separate processing of the minor axis of the elliptical aperture, increasing the minor axis dimension, thereby reducing the major-minor axis ratio. When the ratio value is lower than the target range, the rope pulling device performs symmetrical offset movement in the horizontal Y direction to achieve separate processing of the major axis of the elliptical aperture, increasing the major axis dimension, thereby increasing the major-minor axis ratio.

[0049] As the polishing rope gradually becomes slack during the polishing process, the grinding force between the polishing rope and the hole wall is insufficient during offset processing, making it impossible to polish effectively. Therefore, throughout the offset polishing process, the tension sensor 13 detects and transmits the tension result in real time, and the tension adjustment mechanism 10 automatically tightens the polishing rope according to the result, so as to achieve efficient offset processing and proportional correction of the major and minor axes of the elliptical hole aperture.

[0050] This invention provides an improved method and apparatus for polishing laser gyroscope apertures using a two-way online visual inspection mechanism. The method utilizes a pull-string mechanism and a tension detection mechanism at both ends of the polishing rope to achieve real-time control of the rope's tension. Furthermore, by individually offsetting the major or minor axis, the method enables individual control of the elliptical aperture's major or minor axis dimensions, thereby achieving online correction of the major-minor axis ratio.

Claims

1. A device for improving the cable-throwing process of laser gyroscope apertures, characterized in that, The device includes: a parts clamping and inspection platform (1) and a rope throwing motion platform (2); The parts clamping and inspection platform (1) includes a light source system (3), which is fixed to the fixed plate (11) by a connector. The light source system (3) performs horizontal and vertical telescopic movements by two motors respectively. The long axis measuring camera (4) is fixed to one side of the light source system (3) on the fixed plate (11) by a connector. The short axis measuring camera (5) is fixed to the back of the fixed plate (11) by a connector. The workpiece clamping mechanism (6) is fixed to the fixed plate (11) by a connector and automatically clamps the workpiece by a motor. The polishing liquid storage tank (7) is fixed to the fixed plate (11) by a connector. The polishing liquid flows through the peristaltic pump (8) through the rubber hose and flows out from the nozzle (9).

2. The apparatus for improving the laser gyroscope aperture rope throwing process according to claim 1, characterized in that, The parts clamping and inspection platform (1) can move up and down and back and forth in the horizontal Y direction and vertical Z direction, realizing relative movement with the rope throwing motion platform (2). The rope throwing motion platform (2) itself can reciprocate in the X direction, so that the polishing rope can be offset in the Y or Z direction, realizing the individual polishing and enlarging of the major or minor axis of the elliptical aperture hole.

3. The apparatus for improving the laser gyroscope aperture rope throwing process according to claim 1, characterized in that, The rope throwing platform (2) includes a tension adjustment mechanism (10). The tension adjustment mechanism (10) rotates the rope winder by a motor. The polishing rope passes through the centering sleeve (12) and is fixed to the polishing rope hook (14). A tension sensor (13) is set on the polishing rope hook (14) to sense and output the tension value of the polishing rope.

4. The apparatus for improving the laser gyroscope aperture rope throwing process according to claim 1, characterized in that, The light source system (3) has an L-shaped structure and is equipped with a Y-direction light source module and a Z-direction light source module; When in use, the Y-direction light source module descends to the height of the center hole of the workpiece along the negative Z-axis with the lifting mechanism, and then extends into the center hole along the positive Y-axis. Its emitted light is aligned with the long axis measuring camera (4) above. The Z-direction light source module descends along the Z-axis to the height of the workpiece aperture along the lifting mechanism, and its emitted light is aligned with the short-axis measuring camera (5) on the back through the small hole on the fixed plate (11).

5. The apparatus for improving the laser gyroscope aperture rope throwing process according to claim 1, characterized in that, The workpiece clamping mechanism (6) is a double-end motion design structure, which ensures that the aperture hole in the laser gyroscope cavity parts of different shapes and sizes is always located in the clamping center position. At the same time, by using pads of different thicknesses, the aperture hole in the laser gyroscope cavity parts of different shapes and sizes can always be at the same height position.

6. A method for improving the cable-throwing process of laser gyroscope apertures, characterized in that, The method is implemented using the apparatus described in any one of claims 1-5, and the method includes: S1, preparation stage: The workpiece is the laser gyroscope cavity part to be processed, which is clamped in the workpiece clamping mechanism 6. At this time, the aperture is located at the upper center of the cavity and the direction is horizontal. S2, take out the polishing rope, fix one end of it to the polishing rope hook (14), and pass the other end through the aperture hole, then through the centering sleeve (12), and hang it on the rope winder (11); S3, after the processing is started, the tension adjustment mechanism (10) drives the rope winder (11) to rotate and tighten the polishing rope. At the same time, at the other end of the polishing rope, the tension sensor (13) senses that the tension value gradually increases. When it increases to the preset limit, the tension adjustment mechanism (10) stops working and the polishing rope is tightened. S4, then the light source system (3) starts to work. After the two light source modules are lowered to the specified height by the telescopic mechanism, the two light sources are aligned with the long axis measuring camera (4) and the short axis measuring camera (5) respectively, and the long axis and short axis dimensions of the aperture hole are photographed and measured. S5, the stirrer in the polishing liquid storage tank (7) works, the peristaltic pump (8) rotates periodically, and the polishing liquid is sprayed onto the polishing rope through the nozzle. Then the rope throwing motion platform (2) performs X-axis reciprocating motion, and the polishing rope polishes the elliptical aperture wall. At the same time, each reciprocating motion calculates and updates the ratio of the major axis and minor axis of the aperture. S6, the working mode of the polishing rope is changed according to the ratio of the major axis and minor axis of the aperture hole, the working mode including full contour machining and offset machining.

7. The method for improving the laser gyroscope aperture rope throwing process according to claim 6, characterized in that, In S6, the working mode of the polishing rope is changed according to the ratio of the major axis and minor axis of the aperture hole. The working mode includes full contour machining and offset machining, specifically including: When the length or length axis reaches the preset value, the latest length-to-length ratio is judged. When the ratio is higher or lower than the target range, the device alarms and notifies personnel to partially cut the number of polishing rope strands. Then, adjust the major or minor axis proportions: When the ratio value is higher than the target range, the part clamping and inspection platform (1) performs symmetrical offset movement in the vertical Z direction to realize the separate processing of the short axis of the elliptical aperture hole, increase the size of the short axis, and thereby realize the reduction and correction of the ratio between the long and short axes. When the ratio is lower than the target range, the part clamping and inspection platform (1) performs symmetrical offset movement in the horizontal Y direction to realize the separate processing of the long axis of the elliptical aperture hole, increase the size of the long axis, and thereby realize the increase correction of the ratio between the long and short axes.

8. The method for improving the laser gyroscope aperture rope throwing process according to claim 6, characterized in that, The method further includes: During the polishing process, the tension sensor (13) detects and transmits the tension value of the polishing rope in real time, and the tension adjustment mechanism (10) automatically tightens the polishing rope according to the tension value of the polishing rope.

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