Gas concentration regulation and control interference imaging system applied to shape correction of nozzle handle

Abstract

The invention relates to the technical field of optics, in particular to a gas concentration regulation and control interference imaging system applied to shape righting of a nozzle handle, a shape righting tool and a nozzle are prepared, the shape righting tool is provided with a downward pressing mechanism, the downward pressing mechanism is provided with a downward pressing telescopic column for correcting the nozzle handle, and a displacement measurement interferometer system is assembled on the shape righting tool; the displacement measurement interferometer system is provided with a reflecting movable mirror and a beam splitter, and the reflecting movable mirror is mounted on the pressing telescopic column; the displacement measurement interferometer system further comprises an interference light path stroke difference fine tuning system. The interference light path stroke difference fine adjustment system comprises a glass container for containing sulfur hexafluoride, the end faces of the two ends of the glass container are flat and transparent, the glass container is arranged on a light path between the beam splitter and the reflective moving mirror, and the end faces of the two ends of the glass container are perpendicular to laser on the light path; the glass container is provided with an air supply port; the air supply port is connected to an air pump, and the air pump is connected with a sulfur hexafluoride air source. And the shape correcting position of the nozzle handle is accurately controlled.

Description

Technical Field

[0001] The present invention relates to the field of optical technologies, and particularly to a laser interference system. Background Art

[0002] The nozzle of a jet engine is one of the key components of the engine. The nozzle is usually made of superalloy and needs to withstand extreme temperatures and pressures. During the manufacturing process, geometric shape deviations may occur due to thermal deformation or mechanical stress. At this time, an orthopedic tooling is required to restore its design dimensions.

[0003] The deformation of the nozzle shank is one of the important factors affecting the performance and structural integrity of the nozzle. The nozzle has the characteristics of thin walls and multiple curvatures. The orthopedic correction of the nozzle shank after deformation requires precise control of the orthopedic position to avoid over-orthopedics and causing orthopedic damage to the nozzle shank. Summary of the Invention

[0004] The purpose of this part is to outline some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Simplifications or omissions may be made in this part, as well as in the abstract and title of the present application, to avoid obscuring the purpose of this part, the abstract, and the title. However, such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] In view of the problems existing in the above-mentioned prior art, the present invention is proposed.

[0006] To solve the above technical problems, the present invention provides the following technical solutions; A gas concentration regulation interference imaging system applied to the orthopedic correction of a nozzle shank, preparing an orthopedic tooling and a nozzle. The nozzle includes a nozzle shank. The orthopedic tooling is provided with a pressing mechanism, and the pressing mechanism has a pressing telescopic column for correcting the nozzle shank. A displacement measurement interferometer system is assembled on the orthopedic tooling; The displacement measurement interferometer system further includes a reflecting moving mirror and a beam splitter, and the reflecting moving mirror is installed on the pressing telescopic column; The optical path between the reflecting moving mirror and the beam splitter is parallel to the telescopic direction of the pressing telescopic column; The displacement measurement interferometer system further includes an interference optical path travel difference fine-tuning system; The interference optical path travel difference fine-tuning system includes a glass container containing sulfur hexafluoride. The end faces of both ends of the glass container are flat and transparent, and the glass container is arranged on the optical path between the beam splitter and the reflecting moving mirror; The end faces of both ends of the glass container are perpendicular to the laser on the optical path; The glass container is provided with a gas supply port; The gas supply port is connected to an air pump, and the air pump is connected to a sulfur hexafluoride gas source; Nozzle shank orthopedic correction process: S1: Install a selected standard nozzle in the orthopedic tooling, and the pressing end of the pressing mechanism presses down to one end of the standard nozzle shank. Mechanically adjust the position of the reflecting movable mirror on the pressing telescopic column of the pressing mechanism to obtain a preliminary interference image. S2: Adjust the concentration of sulfur hexafluoride in the glass container through an air pump. Utilize the physical property that the speed of light in air is greater than that in sulfur hexafluoride, and precisely adjust the optical path difference to adjust the preliminary interference image to obtain a standard interference image. S3: Remove the standard nozzle, install the nozzle to be orthopedized in the orthopedic tooling. The image of the displacement measurement interferometer system is the actual interference image. Press down the pressing telescopic column until the actual interference image is similar to the classical interference image, and stop the pressing of the pressing mechanism to complete the orthopedization of the nozzle shank to be orthopedized.

[0007] In the above design, for the orthopedization of the nozzle shank, by adopting the above technical solution, the pressing mechanism of the orthopedic tooling can greatly improve the orthopedic accuracy with the help of the displacement measurement interferometer system. The orthopedic tooling is driven by a microcontroller system to operate. Now, using the displacement measurement interferometer system, the displacement measurement interferometer system is provided with a MOS camera for receiving interference imaging. The position of the reflecting movable mirror installed on the pressing telescopic column can be initially adjusted mechanically to obtain a preliminary interference image. The position of the pressing telescopic column has been calibrated through the preliminary interference image to improve the orthopedic accuracy.

[0008] Mechanically adjusting the position of the reflecting movable mirror for preliminary adjustment has a lack of accuracy in obtaining the preliminary interference image. After introducing the fine adjustment system for the interference optical path travel difference, it is possible to rely on the air pump to adjust the concentration of sulfur hexafluoride in the glass container, and the concentration of sulfur hexafluoride affects the time required for light to pass through it. Correspondingly, the optical path difference is adjusted, improving the accuracy of adjusting the optical path difference. The end faces of both ends of the glass container are flat and transparent. The glass container is arranged on the optical path between the beam splitter and the reflecting movable mirror. The end faces of both ends of the glass container are perpendicular to the laser on the optical path. By adjusting the sulfur hexafluoride gas source in the glass container, the adjustment of the optical path difference can be realized, improving the adjustment accuracy. It is possible to adjust a relatively large amount of gas, corresponding to the effect of precisely adjusting the optical path difference between the reflecting movable mirror and the beam splitter, so the adjustment accuracy is greatly improved.

[0009] The refractive index of air is approximately 1.0003, and the speed of light in air is generally taken as 3×10 8 m / s.

[0010] The refractive index of light of sulfur hexafluoride in the gaseous state is approximately 1.00087 at 25°C, which is a commonly used typical value. At this time, the speed of light is approximately 2.9987×10 8 m / s. The actual value will vary slightly due to pressure, purity, and specific temperature, and in a fixed container, the higher the concentration of sulfur hexafluoride, the higher the refractive index and the slower the speed of light.

[0011] When the concentration of sulfur hexafluoride gas is increased to 10 times, the refractive index of light is about 1.0087 and the speed of light is 2.973×10 8 m / s. The speed of light is 0.0257×10 8 m / s. If the distance between the two ends of the glass container is 10 cm, this corresponds to a displacement of the reflective mirror of 0.39 mm. This allows for large gas adjustments and small adjustments to the optical path difference between the beam splitter and the reflective mirror. This enables high-precision optical path difference adjustment, resulting in higher-precision standard interference images.

[0012] During calibration, the displacement measurement interferometer system's built-in structure is first used for preliminary calibration. In the subsequent adjustment process, the MOS camera calculates the displacement by observing the interference fringes. When it detects that the actual interference image at the calibration position is similar to the standard interference image, the microcontroller system stops the downward pressure mechanism to complete the correction. The standard interference image is obtained, and the precise adjustment accuracy of the interference optical path travel difference fine-tuning system is higher to meet the needs of jet engine nozzles.

[0013] The microprocessor system can also control the upper correction mechanism to perform detailed micro-corrections repeatedly after reaching the calibration position to cope with the correction rebound and improve the accuracy of the correction.

[0014] The positioning and assembly of the standard nozzle handle are used to determine the calibration position. Before calibration, the beam splitter and reflective mirror are first adjusted to or near the equal optical path using the interference optical path difference fine-tuning system. After the pressing mechanism contacts one end of the nozzle handle, a clear standard interference pattern is recorded with a MOS camera to calibrate the calibration position. The standard nozzle is then removed and the nozzle to be corrected is installed. The microprocessor and MOS camera implement closed-loop control of the pressing mechanism, driving it to press down on one end of the nozzle handle until the MOS camera again detects the recorded interference pattern, confirming that the calibration position has been reached. During this process, the microprocessor system records the total displacement L1. After reaching the calibration position, the pressing mechanism is fully withdrawn, and the nozzle handle partially rebounds. The nozzle is then lightly touched again without applying correction force. The microprocessor system measures the current position and compares it with the pre-correction reference position to obtain the residual displacement L2. The rebound amount is calculated by subtracting L2 from L1. After that, the upper correction mechanism is fine-tuned based on the rebound amount until the nozzle meets the requirements.

[0015] Preferably, the orthopedic tool further comprises a lower abutment and a clamping mechanism; the lower abutment abuts against the bottom of the nozzle handle, the downward-pressing telescopic column presses one end of the nozzle handle in the orthopedic tool, and the clamping mechanism clamps the other end of the nozzle handle in the orthopedic tool; the lower abutment is disposed between the downward-pressing mechanism and the clamping mechanism. By providing the lower abutment and the clamping mechanism, the lower abutment abuts against the bottom of the nozzle handle and the clamping mechanism clamps the other end of the nozzle handle, facilitating downward correction of one end of the nozzle handle by the downward-pressing telescopic column.

[0016] Preferably, the clamping mechanism includes two clamps and two cylinders, with the two clamps respectively clamping the other end of the nozzle handle from two sides above the other end of the nozzle handle; one clamp and one cylinder are provided in pairs, and each pair of clamps and cylinders are rotatably engaged, with a bidirectional ratchet mechanism provided between each pair of clamps and cylinders. A bidirectional ratchet mechanism is provided between the clamps and cylinders of the clamping mechanism to prevent the clamps from loosening, and the nozzle handle can also be loosened by reversing the ratchet mechanism to move the clamps.

[0017] Preferably, the lower stopper abuts between one-third and two-thirds of the nozzle stem's length; a cavity is provided above the lower stopper to fit the nozzle stem. This allows the lower portion of the nozzle stem to be supported by the lower stopper, while the cavity prevents additional deformation during correction, thereby improving the quality of nozzle stem correction.

[0018] Preferably, a support rod for mounting the reflective mirror is connected to the side of the downward telescopic column; the support rod is provided with a reinforcing rib structure. This allows the optical path between the beam splitter and the reflective mirror to avoid the nozzle structure. The reinforcing rib structure reduces vibration of the reflective mirror and improves the imaging quality of the displacement measurement interferometer system.

[0019] Preferably, the orthopedic tool is equipped with another displacement measuring interferometer system, comprising another reflective mirror and another beam splitter; the optical path between the other reflective mirror and the other beam splitter is parallel to the extension and retraction direction of the downward telescopic column; another support rod is connected to the side of the downward telescopic column to mount the other reflective mirror; the other support rod forms an angle of at least 90° with the other support rods. The two displacement measuring interferometer systems share a microprocessor system, capable of measuring the displacement of the downward telescopic column from two different positions, thereby forming two standard interference images. The two standard interference images can be compared and calibrated with each other to further improve accuracy and prevent unexpected deformation of thin-walled parts during multiple extrusions in different directions.

[0020] Preferably, a gas relief pipe is provided on the sidewall of the glass container, wherein a pressure relief valve is installed in the gas relief pipe. The gas relief pipe is connected to a gas recovery system. The gas relief pipe facilitates the pressure relief and exhaust of sulfur hexafluoride gas in the glass container, thereby facilitating the concentration adjustment of the glass container. The gas recovery system can recover sulfur hexafluoride, thus saving costs.

[0021] Preferably, the glass container is further provided with a barometric pressure sensor, and the sensing end of the barometric pressure sensor is arranged in the glass container; the interference optical path travel difference fine-tuning system further includes a temperature control system for controlling the temperature of sulfur hexafluoride in the glass container; the temperature control system includes a semiconductor refrigerating sheet wrapped outside the glass container; the temperature control system further includes an infrared thermal sensor, and the sensing end of the infrared thermal sensor points to the inner cavity of the glass container. The barometric pressure sensor measures the barometric pressure, and the sulfur hexafluoride gas concentration in the glass container is obtained through calculation, so as to improve the control precision of the change of the gas concentration in the glass container. The sulfur hexafluoride concentration is obtained by measuring the barometric pressure through the pressure sensor, and the barometric pressure change of the glass container will vary with the temperature change. After the concentration of the glass container increases, the temperature will increase. According to the temperature measured by the infrared thermal sensor, the temperature of the glass container can be reduced through the semiconductor refrigerating sheet, and the temperature of the glass container is adjusted to maintain the temperature of sulfur hexafluoride in the glass container constant, so as to improve the measurement precision of the barometric pressure sensor, thereby improving the precision of the sulfur hexafluoride gas concentration adjustment and making the measurement precision of the displacement measurement interferometer system higher.

[0022] Furthermore, the temperature control system further includes a heat insulation layer wrapped outside the glass container, and the heat insulation layer wraps the semiconductor refrigerating sheet; the heat insulation layer avoids both ends of the glass container; the glass at both ends of the glass container adopts vacuum heat insulation glass. The heat insulation layer reduces the influence of the external temperature on the temperature change of the glass container, reduces the temperature fluctuation of the glass container, and improves the precision of the sulfur hexafluoride gas concentration adjustment.

[0023] Furthermore, the temperature control system further includes a heating wire, and the heating wire is wound around the side wall of the glass container, and the heat insulation layer wraps the heating wire. The heating wire can increase the temperature of the glass container, heat the glass container according to the temperature measured by the infrared thermal sensor, and maintain the temperature of sulfur hexafluoride in the glass container constant.

[0024] Preferably, the cross-sectional area of the inner cavity of the glass container is greater than 5.5 square centimeters; the length of the inner cavity of the glass container is not less than 12 centimeters. By providing a glass container with a larger volume, more gas is required to change the gas concentration in the glass container. It is allowed to be equipped with an air pump with not very high precision to achieve precise gas concentration adjustment.

[0025] In summary, the present invention has the following beneficial effects: The position of the compression telescopic end is obtained through the actual interference image of the displacement measurement interferometer system. After the actual interference image is approximated to the standard interference image, the corrected position is determined, and the orthopedic quality of the nozzle shank is improved.

[0026] The interferometric optical path difference fine-tuning system allows the glass container to adjust the sulfur hexafluoride gas concentration to achieve a smaller optical path difference between the beam splitter and the reflective mirror, while maintaining a relatively large gas concentration. This significantly improves the accuracy of optical path difference adjustment, resulting in a more precise standard interference pattern. Comparing the actual interference pattern with the standard interference pattern allows for more precise adjustment of the telescopic column, resulting in improved correction quality for the nozzle handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive work. Among them: Figure 1 Schematic diagram of the internal structure of the gas concentration control interference imaging system for nozzle handle correction of the present invention; Figure 2 A schematic diagram showing the internal structure of the gas concentration control interference imaging system for nozzle handle correction according to the present invention from another perspective; Figure 3 Schematic diagram of the complete structure of the gas concentration control interference imaging system for nozzle handle correction of the present invention; Figure 4 This is a schematic diagram from another perspective of the complete structure of the gas concentration control interference imaging system for nozzle handle correction of the present invention.

[0028] In the figure, 1. orthopedic tool; 2. nozzle handle; 3. downward pressing telescopic column; 31. support rod; 4. reflective dynamic mirror; 5. beam splitter; 6. glass container; 7. air pump; 81. chuck; 82. cylinder; 9. lower support block. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the present invention will be described in detail with reference to the schematic diagrams. When describing the embodiments of the present invention in detail, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally in a non-general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0032] Furthermore, the so-called "one embodiment" or "embodiment" herein refers to specific features, structures, or characteristics that may be included in less than one implementation manner of the present invention. The "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it an individual or selectively mutually exclusive embodiment with other embodiments.

[0033] Embodiment 1, referring to Figures 1 - 4 , a gas concentration regulation interference imaging system applied to the orthopedic correction of the nozzle handle. Prepare the orthopedic tooling 1 and the nozzle. The nozzle includes a nozzle handle 2. The orthopedic tooling 1 is provided with a pressing mechanism, and the pressing mechanism has a pressing telescopic column 3 for correcting the nozzle handle 2.

[0034] A displacement measurement interferometer system is assembled on the orthopedic tooling 1; The displacement measurement interferometer system further includes a reflective moving mirror 4 and a beam splitter 5. The reflective moving mirror 4 is installed on the pressing telescopic column 3; The optical path between the reflective moving mirror 4 and the beam splitter 5 is parallel to the telescopic direction of the pressing telescopic column 3; The displacement measurement interferometer system further includes an interference optical path travel difference fine adjustment system; The interference optical path travel difference fine adjustment system includes a glass container 6 containing sulfur hexafluoride. The end faces at both ends of the glass container 6 are flat and transparent, and the glass container 6 is arranged on the optical path between the beam splitter 5 and the reflective moving mirror 4; The end faces at both ends of the glass container 6 are perpendicular to the laser on the optical path; The glass container 6 is provided with a gas supply port; The gas supply port is connected to an air pump 7, and the air pump 7 is connected to a sulfur hexafluoride gas source; Nozzle handle 2 orthopedic process: S1: Install a selected standard nozzle in the orthopedic tooling 1, and the pressing end of the pressing mechanism presses down to one end of the standard nozzle handle 2; Mechanically adjust the position of the reflective moving mirror 4 on the pressing telescopic column 3 of the pressing mechanism to obtain a preliminary interference image; S2: Adjust the concentration of sulfur hexafluoride in the glass container 6 through the air pump 7. Utilize the physical property that the speed of light in air is greater than that in sulfur hexafluoride to precisely adjust the optical path difference and thus adjust the preliminary interference image to obtain a standard interference image; S3: Remove the standard nozzle, install the nozzle to be orthopedized into the orthopedic tooling 1. The image of the displacement measurement interferometer system is the actual interference image. Lower the pressing telescopic column 3 until the actual interference image is similar to the classical interference image, stop the pressing of the pressing mechanism, and complete the orthopedics of the nozzle handle 2 to be orthopedized.

[0035] In the above design, for the orthopedics of the nozzle handle 2, by adopting the above technical solution, the pressing mechanism of the orthopedic tooling 1 can greatly improve the orthopedic accuracy with the help of the displacement measurement interferometer system. The orthopedic tooling 1 is driven by a microcontroller system to operate. Now, use the displacement measurement interferometer system. The displacement measurement interferometer system is equipped with a MOS camera for receiving interference imaging. The position of the reflective moving mirror 4 installed on the pressing telescopic column 3 can be initially adjusted mechanically to obtain a preliminary interference image. The position of the pressing telescopic column 3 has been calibrated through the preliminary interference image to improve the orthopedic accuracy.

[0036] Mechanically adjusting the position of the reflective moving mirror 4 for preliminary adjustment has a lack of accuracy in obtaining the preliminary interference image. After introducing the interference optical path travel difference fine-tuning system, the concentration of sulfur hexafluoride in the glass container 6 can be adjusted by relying on the air pump 7, and the concentration of sulfur hexafluoride affects the time required for light to pass through it. Accordingly, the optical path difference is adjusted, and the accuracy of adjusting the optical path difference is improved. The end faces of both ends of the glass container 6 are flat and transparent. The glass container 6 is arranged on the optical path between the beam splitter 5 and the reflective moving mirror 4. The end faces of both ends of the glass container 6 are perpendicular to the laser on the optical path. By adjusting the sulfur hexafluoride gas source in the glass container 6, the adjustment of the optical path difference can be realized, and the adjustment accuracy is improved. A relatively large amount of gas can be adjusted, which is equivalent to the effect of precisely adjusting the optical path difference between the reflective moving mirror 4 and the beam splitter 5. Therefore, the adjustment accuracy is greatly improved.

[0037] The refractive index of air is about 1.0003, and the speed of light in air is generally taken as 3×10 8 m / s.

[0038] The refractive index of light for sulfur hexafluoride in the gaseous state is about 1.00087 at 25°C, which is a commonly used typical value. At this time, the speed of light is about 2.9987×10 8 m / s. The actual value will vary slightly due to pressure, purity, and specific temperature. And in a fixed container, the higher the concentration of sulfur hexafluoride, the higher the refractive index and the slower the speed of light.

[0039] After the gas concentration of sulfur hexafluoride is increased by 10 times, the refractive index of light is about 1.0087, and the speed of light is 2.973×10 8 m / s. The difference in the speed of light from the normal state is 0.0257×10 8m / s. If the distance between the two ends of the glass container 6 is 10 cm, this is equivalent to a displacement of the reflective mirror 4 of 0.39 mm. This allows for relatively large gas adjustments and smaller adjustments to the optical path difference between the beam splitter 5 and the reflective mirror 4. This allows for highly precise optical path difference adjustment, resulting in a more accurate standard interference image.

[0040] During calibration, the displacement measurement interferometer system's built-in structure is first used for preliminary calibration. In the subsequent adjustment process, the MOS camera calculates the displacement by observing the interference fringes. When it detects that the actual interference image at the calibration position is similar to the standard interference image, the microcontroller system stops the downward pressure mechanism to complete the correction. The standard interference image is obtained, and the precise adjustment accuracy of the interference optical path travel difference fine-tuning system is higher to meet the needs of jet engine nozzles.

[0041] The microprocessor system can also control the upper correction mechanism to perform detailed micro-corrections repeatedly after reaching the calibration position to cope with the correction rebound and improve the accuracy of the correction.

[0042] The positioning and assembly of the standard nozzle handle 2 are used to determine the calibration position. Before calibration, the beam splitter 5 and the reflective mirror 4 are first adjusted to or near the equal optical path using the interference optical path difference fine-tuning system. After the pressing mechanism contacts one end of the nozzle handle 2, a clear standard interference pattern is recorded using the MOS camera to calibrate the calibration position. The standard nozzle is then removed and the nozzle to be corrected is installed. The microprocessor and MOS camera implement closed-loop control of the pressing mechanism, driving it to press down on one end of the nozzle handle 2 until the MOS camera again detects the recorded interference pattern, confirming that the calibration position has been reached. During this process, the microprocessor system records the total displacement L1. After reaching the calibration position, the pressing mechanism is fully withdrawn, and the nozzle handle 2 partially rebounds. The nozzle is then lightly touched again without applying correction force. The microprocessor system measures the current position and compares it with the pre-correction reference position to obtain the residual displacement L2. The rebound amount is calculated by subtracting L2 from L1. Afterwards, the upper correction mechanism is fine-tuned based on the rebound amount until the nozzle meets the requirements.

[0043] The orthopedic tool 1 is equipped with another displacement measuring interferometer system, which includes another reflective mirror 4 and another beam splitter 5. The optical path between the other reflective mirror 4 and the other beam splitter 5 is parallel to the extension and retraction direction of the downward telescopic column 3. The downward telescopic column 3 is connected to the side thereof with another support rod 31 on which the other reflective mirror 4 is mounted. The other support rod 31 forms an angle of at least 90° with the other support rods 31. The two displacement measuring interferometer systems share a microprocessor system, which can measure the displacement of the downward telescopic column 3 from two different positions, thereby forming two standard interference images. The two standard interference images can be compared and calibrated with each other to further improve accuracy and prevent unexpected deformation of thin-walled parts during multiple extrusions in different directions.

[0044] The sidewall of the glass container 6 is provided with a gas relief conduit, which is equipped with a pressure relief valve and connected to a gas recovery system. This conduit facilitates the decompression and exhaust of sulfur hexafluoride gas in the glass container 6, facilitating concentration adjustment in the glass container 6. The gas recovery system recycles sulfur hexafluoride, saving costs.

[0045] The glass container 6 is also equipped with a pressure sensor, the sensing end of which is located within the glass container 6. The interference optical path travel difference fine-tuning system also includes a temperature control system for controlling the temperature of the sulfur hexafluoride in the glass container 6. The temperature control system includes a semiconductor cooling chip encased in the glass container 6. The temperature control system also includes an infrared thermal sensor, the sensing end of which points toward the interior of the glass container 6. The pressure sensor measures the air pressure and calculates the sulfur hexafluoride gas concentration in the glass container 6, thereby improving the accuracy of controlling changes in gas concentration within the glass container 6. The pressure sensor measures the air pressure to obtain the sulfur hexafluoride concentration, but the pressure change in the glass container 6 varies with temperature. As the concentration increases, the temperature of the glass container 6 increases. Based on the temperature measured by the infrared thermal sensor, the semiconductor cooling chip can be used to lower the temperature of the glass container 6, adjusting the glass container 6 to maintain a constant temperature of the sulfur hexafluoride in the glass container 6. This improves the measurement accuracy of the pressure sensor, thereby improving the accuracy of the sulfur hexafluoride gas concentration adjustment and enhancing the measurement precision of the displacement measurement interferometer system.

[0046] Furthermore, the temperature control system includes an insulating layer wrapped around the glass container 6, which surrounds the semiconductor cooling chip. The insulating layer avoids the ends of the glass container 6, and the glass at both ends of the glass container 6 is vacuum-insulated glass. The insulating layer reduces the impact of external temperature on the temperature of the glass container 6, reduces temperature fluctuations of the glass container 6, and improves the accuracy of sulfur hexafluoride gas concentration adjustment.

[0047] Further, the temperature control system further includes a heating wire, which is wound around the side wall of the glass container 6, and the heat insulation layer wraps the heating wire. The heating wire can increase the temperature of the glass container 6, heat the glass container 6 according to the temperature measured by the infrared thermal sensor, and maintain the temperature of sulfur hexafluoride in the glass container 6 constant.

[0048] The cross-sectional area of the inner cavity of the glass container 6 is greater than 5.5 square centimeters; the length of the inner cavity of the glass container 6 is not less than 12 centimeters. By providing a glass container 6 with a larger volume, more gas is required to change the gas concentration in the glass container 6. An air pump 7 with not very high precision can be equipped to achieve precise adjustment of the gas concentration.

[0049] During use, a selected standard nozzle is loaded into the orthopedic tooling 1 before orthopedic treatment of the nozzle handle 2. The pressing end of the pressing mechanism presses down on one end of the standard nozzle handle 2, and the position of the mechanical adjustment reflecting mirror 4 is adjusted preliminarily to obtain a preliminary interference image. The temperature of the glass container 6 is reduced by the semiconductor refrigeration sheet or the temperature of the glass container 6 is increased by heating with the heating wire, and the temperature of sulfur hexafluoride in the glass container 6 is adjusted to be maintained at about 25°C. The air pump 7 adjusts to increase the concentration of sulfur hexafluoride in the glass container 6, and the pressure relief valve adjusts to reduce the concentration of sulfur hexafluoride in the glass container 6, so that the optical path difference between the reflecting mirror 4 and the beam splitter 5 can be precisely adjusted, and the adjustment accuracy is greatly improved. Thus, the accuracy of the standard interference image captured by the MOS camera is improved.

[0050] The standard nozzle is removed, and the nozzle handle 2 to be orthopedically treated is loaded into the orthopedic tooling 1. The microprocessor and the MOS camera perform closed-loop control on the pressing mechanism to drive it to squeeze the nozzle until the MOS camera detects the recorded interference pattern again. Thus, the accuracy of orthopedic treatment of the nozzle handle 2 is higher, and overcorrection will not be caused to introduce new defects or changes excessively.

[0051] Embodiment 2, refer to Figure 1 and Figure 3 This is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0052] The orthopedic tooling 1 further includes a lower abutting block 9 and a clamping mechanism; the lower abutting block 9 abuts against the lower part of the nozzle handle 2, the pressing telescopic column 3 presses one end of the nozzle handle 2 in the orthopedic tooling 1, and the clamping mechanism clamps the other end of the nozzle handle 2 in the orthopedic tooling 1; the lower abutting block 9 is arranged between the pressing mechanism and the clamping mechanism. By providing the lower abutting block 9 and the clamping mechanism, the lower abutting block 9 abuts against the lower part of the nozzle handle 2 and the clamping mechanism can clamp the other end of the nozzle handle 2, which is convenient for pressing and correcting one end of the nozzle handle 2 through the pressing telescopic column 3.

[0053] Preferably, the clamping mechanism includes two chucks 81 and two cylinders 82. The two chucks 81 respectively clamp the other end of the nozzle handle 2 from both sides above the other end side of the nozzle handle 2. One chuck 81 and one cylinder 82 are arranged in pairs. Each pair of the chuck 81 and the cylinder 82 are rotationally matched, and a bi-directional ratchet mechanism is arranged between each pair of the chuck 81 and the cylinder 82. A bi-directional ratchet mechanism is arranged between the chuck 81 and the cylinder 82 of the clamping mechanism to prevent the chuck 81 from loosening, and the bi-directional ratchet mechanism can also be reversed to toggle the chuck 81 to loosen the nozzle handle 2.

[0054] Preferably, the lower abutting block 9 abuts between one-third and two-thirds of the length of the nozzle handle 2; a cavity conforming to the nozzle handle 2 is arranged above the lower abutting block 9. The lower part of the nozzle handle 2 is abutted by the lower abutting block 9, and the cavity prevents the nozzle handle 2 from undergoing additional deformation during orthopedic correction, thereby improving the quality of the orthopedic correction of the nozzle handle 2.

[0055] Preferably, a support rod 31 for mounting a reflecting movable mirror 4 is connected to the side of the downward pressing telescopic column 3; a reinforcing rib structure is arranged on the support rod 31. The optical path between the beam splitter 5 and the reflecting movable mirror 4 can avoid the structure of the nozzle. The reinforcing rib structure reduces the vibration of the reflecting movable mirror 4 and improves the imaging quality of the displacement measuring interferometer system.

[0056] During use, after the nozzle is placed in the orthopedic tooling 1, the lower abutting block 9 supports between one-third and two-thirds of the length of the nozzle handle 2 through the cavity. The bi-directional ratchet mechanism of the clamping mechanism controls the chuck 81 to rotate towards the other end of the nozzle handle 2, so that the chuck 81 clamps the other end of the nozzle handle 2, facilitating the downward pressing and correction of one end of the nozzle handle 2 through the downward pressing telescopic column 3. In this way, when the downward pressing telescopic column 3 presses and corrects the nozzle handle 2, the nozzle will not slide, resulting in an error in the correction of the nozzle handle 2, thereby improving the quality of the correction of the nozzle handle 2.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A gas concentration regulation interference imaging system applied to the orthopedic correction of a nozzle handle. Prepare an orthopedic tooling (1) and a nozzle. The nozzle has a nozzle handle (2). The orthopedic tooling (1) is provided with a downward pressing mechanism. The downward pressing mechanism has a downward pressing telescopic column (3) for correcting the nozzle handle (2). It is characterized in that: A displacement measurement interferometer system is assembled on the orthopedic tooling (1); It further includes that the displacement measurement interferometer system has a reflecting moving mirror (4) and a beam splitter (5). The reflecting moving mirror (4) is installed on the downward pressing telescopic column (3); The optical path between the reflecting moving mirror (4) and the beam splitter (5) is parallel to the telescopic direction of the downward pressing telescopic column (3); The displacement measurement interferometer system further includes an interference optical path travel difference fine-tuning system; The interference optical path travel difference fine-tuning system includes a glass container (6) containing sulfur hexafluoride. The end faces at both ends of the glass container (6) are flat and transparent. The glass container (6) is arranged on the optical path between the beam splitter (5) and the reflecting moving mirror (4); The end faces at both ends of the glass container (6) are perpendicular to the laser on the optical path; The glass container (6) is provided with a gas supply port; The gas supply port is connected to an air pump (7), and the air pump (7) is connected to a sulfur hexafluoride gas source; The orthopedic process of the nozzle handle (2): S1: Install a selected standard nozzle in the orthopedic tooling (1). The downward pressing end of the downward pressing mechanism presses down to one end of the standard nozzle handle (2); Mechanically adjust the position of the reflecting moving mirror (4) on the downward pressing telescopic column (3) of the downward pressing mechanism to obtain a preliminary interference image; S2: Adjust the concentration of sulfur hexafluoride in the glass container (6) through the air pump (7). Utilize the physical property that the speed of light in air is greater than that in sulfur hexafluoride. Precisely adjust the optical path difference to adjust the preliminary interference image and obtain a standard interference image; S3: Remove the standard nozzle, install the nozzle to be orthopedically corrected into the orthopedic tooling (1). The image of the displacement measurement interferometer system is the actual interference image. Make the downward pressing telescopic column (3) press down until the actual interference image is similar to the standard interference image. Stop the downward pressing of the downward pressing mechanism to complete the orthopedic correction of the nozzle handle (2) to be orthopedically corrected.

2. The gas concentration regulation interference imaging system applied to the orthopedics of the nozzle handle according to claim 1, wherein: The orthopedic tooling (1) further includes a lower abutting block (9) and a clamping mechanism; The lower abutting block (9) abuts against the lower part of the nozzle handle (2). The downward pressing telescopic column (3) presses tightly one end of the nozzle handle (2) in the orthopedic tooling (1). The clamping mechanism clamps the other end of the nozzle handle (2) in the orthopedic tooling (1); The lower abutting block (9) is arranged between the downward pressing mechanism and the clamping mechanism; 3. The gas concentration regulation interference imaging system applied to the orthosis of the nozzle handle according to claim 2, wherein: The clamping mechanism includes two clamping heads (81) and two cylinders (82). The two clamping heads (81) respectively clamp the other end of the nozzle handle (2) from both sides above the other end side of the nozzle handle (2); One clamping head (81) and one cylinder (82) are arranged in pairs. Each pair of the clamping heads (81) and the cylinders (82) are rotationally matched. A two-way ratchet mechanism is arranged between each pair of the clamping heads (81) and the cylinders (82); 4. The gas concentration regulation interference imaging system applied to the orthopedics of the nozzle handle according to claim 3, characterized in that: The lower abutting block (9) abuts between one-third and two-thirds of the length of the nozzle handle (2); A cavity that fits the nozzle handle (2) is arranged above the lower abutting block (9).

5. The gas concentration regulation interference imaging system applied to the orthopaedics of the nozzle handle according to claim 1, wherein: A support rod (31) for mounting a reflecting moving mirror (4) is connected to the side surface of the downward pressing telescopic column (3); A reinforcing rib structure is provided on the support rod (31).

6. The gas concentration regulation interference imaging system applied to the orthopedics of the nozzle handle according to claim 5, characterized in that: Another displacement measurement interferometer system is assembled on the orthopedic tooling (1), and the another displacement measurement interferometer system has another reflecting moving mirror (4) and another beam splitter (5); The optical path between the another reflecting moving mirror (4) and the another beam splitter (5) is parallel to the telescopic direction of the downward pressing telescopic column (3); Another support rod (31) for mounting another reflecting moving mirror (4) is connected to the side surface of the downward pressing telescopic column (3); The included angle between the another support rod (31) and the support rod (31) is at least 90°.

7. The gas concentration regulation interference imaging system applied to the orthopaedics of the nozzle handle according to claim 1, wherein: A vent pipe is provided on the side wall of the glass container (6), a pressure relief valve is provided in the vent pipe, and the vent pipe is connected to a gas recovery system.

8. The gas concentration regulation interference imaging system applied to the orthopaedics of the nozzle handle according to claim 1, characterized in that: The glass container (6) is further provided with a barometric pressure sensor, and the sensing end of the barometric pressure sensor is arranged in the glass container (6); The interference optical path travel difference fine adjustment system further includes a temperature control system for controlling the temperature of sulfur hexafluoride in the glass container (6); The temperature control system includes a semiconductor refrigerating sheet wrapped outside the glass container (6); The temperature control system further includes an infrared thermal sensor, and the sensing end of the infrared thermal sensor points to the inner cavity of the glass container (6).

9. The gas concentration regulation interference imaging system applied to the orthosis of the nozzle handle according to claim 1, wherein: The cross-sectional area of the inner cavity of the glass container (6) is greater than 5.5 square centimeters; The length of the inner cavity of the glass container (6) is not less than 12 centimeters.

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