Intelligent ring polishing machine and control method thereof

Abstract

The present invention relates to the technical field of optical element processing, and provides an intelligent ring polishing machine and a control method thereof, wherein the intelligent ring polishing machine comprises: an equipment body, including a polishing base and a driving mechanism for driving the polishing base to rotate, the polishing base is provided with a first pipeline, the central axis of the polishing base is provided with a rotary sealing valve, the liquid inlet and liquid outlet of the first pipeline are both connected to the rotary sealing valve, and the polishing base is provided with a polishing rubber plate covering the first pipeline; a rubber plate constant temperature device, which is provided with antifreeze liquid inside and is used to adjust the temperature of the antifreeze liquid, the rubber plate constant temperature device is connected to the rotary sealing valve, and the rubber plate constant temperature device is used to drive the antifreeze liquid to circulate between the rubber plate constant temperature device and the first pipeline. The present application can evenly and quickly adjust the temperature of the polishing rubber plate through the rubber plate constant temperature device, and has significant improvements in adjustment accuracy and adjustment efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of optical element processing, and more specifically, to an intelligent ring polishing machine and a control method thereof. Background Art

[0002] Annular polishing is one of the key technologies for processing large-aperture flat optical components. Annular polishing machines usually use large-size, high-thermal-stability natural granite as a polishing base. A circular asphalt rubber layer is cast on the surface of the polishing base as a polishing rubber disc. A correction disc and a workpiece disc are placed on top of the polishing rubber disc in sequence. The correction disc is used to correct and control the surface error of the polishing rubber disc, and the workpiece disc is used to hold the optical component. When processing optical components, the polishing rubber disc, the correction disc, and the workpiece disc all rotate at a constant speed. The optical component placed in the workpiece disc produces material removal under the action of the polishing rubber disc and the polishing particles it carries, thereby forming an optical surface.

[0003] From the above, it can be seen that the removal of the workpiece surface mainly depends on the friction between the optical element and the polishing rubber plate and polishing particles. Among them, the friction strength required for optical elements of different materials is different, so polishing rubber plates with different hardness are required. In other words, the hardness of the polishing rubber plate will further affect the surface accuracy and surface roughness of the optical element.

[0004] In the current production process of ring polishing machines, the processing matching between the polishing rubber plate and the optical element is single, resulting in a long adjustment cycle of the polishing rubber plate, high requirements on personnel, and technical problems of low control accuracy.

[0005] Therefore, the existing technology still needs to be improved and developed. Summary of the invention

[0006] The purpose of the present invention is to provide an intelligent ring polishing machine and a control method thereof, so as to solve the technical problems of long adjustment cycle and low control precision of polishing rubber plates in the prior art.

[0007] To achieve the above object, the first aspect of the present invention provides an intelligent ring polishing machine for polishing optical elements, comprising:

[0008] The device body comprises a polishing base and a driving mechanism for driving the polishing base to rotate, the polishing base is provided with a first pipeline, the central axis of the polishing base is provided with a rotary sealing valve, the liquid inlet and liquid outlet of the first pipeline are both connected to the rotary sealing valve, and the polishing base is provided with a polishing rubber plate covering the first pipeline;

[0009] The rubber plate constant temperature device has antifreeze inside and is used to adjust the temperature of the antifreeze. The rubber plate constant temperature device is connected to the rotary sealing valve and is used to drive the antifreeze to circulate between the rubber plate constant temperature device and the first pipeline.

[0010] Furthermore, the first pipeline is spirally distributed around the central axis of the polishing base and between the polishing base and the polishing rubber plate.

[0011] Furthermore, a temperature probe is provided on the polishing base, and the temperature probe is electrically connected to the rubber plate constant temperature device and is used to detect the temperature of the polishing rubber plate.

[0012] In some embodiments, the smart ring throwing machine further includes:

[0013] A protective cover, which is arranged on the equipment body and encloses the equipment body to form a sealed space, and the polishing base plate and the polishing rubber plate are located in the sealed space;

[0014] The air purification component includes a fan, a filter module, a return air duct, and a fresh air duct. The air outlet end of the fan is connected to the sealed space, the filter module is connected to the air outlet end of the fan, the return air duct is connected to the sealed space and connected to the air inlet end of the fan, and the fresh air duct is connected to the air inlet end of the fan and connected to the outside of the sealed space.

[0015] Furthermore, the intelligent ring polishing machine also includes an environmental constant temperature device, which includes a temperature controller and a surface cooler. The temperature controller is used to adjust the temperature of the surface cooler, and the surface cooler is directly opposite to the air outlet end of the fan.

[0016] In some embodiments, the intelligent ring polishing machine also includes an environmental constant humidity device, which includes a humidity controller and a humidifying water curtain. The humidity controller is used to adjust the humidity of the humidifying water curtain, and the humidifying water curtain is directly opposite to the air outlet of the fan.

[0017] Furthermore, the filter module, the surface cooler, and the humidifying water curtain are sequentially arranged at the air outlet end of the fan.

[0018] In some embodiments, the intelligent ring polishing machine also includes an intelligent control module, which is electrically connected to the rubber plate constant temperature device, the environmental constant temperature device, and the environmental constant humidity device. The intelligent control module is used to match the hardness of the polishing rubber plate according to the material of the optical element and determine the working temperature and working humidity of the polishing rubber plate. The rubber plate constant temperature device is used to adjust the antifreeze to the working temperature of the polishing rubber plate, the temperature controller is used to adjust the surface cooler to the working temperature of the polishing rubber plate, and the humidity controller is used to adjust the humidifying water curtain to the working humidity of the polishing rubber plate.

[0019] Furthermore, the intelligent ring polishing machine also includes a workpiece disk and a correction disk, the workpiece disk is used to clamp the optical element, the polishing rubber plate is used to polish the optical element, and the correction disk is used to conform to and correct the polishing rubber plate.

[0020] A second aspect of the present invention provides a control method for an intelligent ring polishing machine, which is applied to the above-mentioned intelligent ring polishing machine and comprises the following steps:

[0021] Step 1: Start the air purification component. After the fan is running, the initial air of the fresh air duct and the return air duct is discharged from the air outlet. The filter module filters the initial air to obtain clean air. The clean air enters the sealed space surrounded by the protective cover and the equipment body. The original air in the sealed space enters the return air duct and re-enters the fan as the initial air, so as to realize the circulation filtration of the air in the sealed space;

[0022] Step 2: Start the environment thermostat and adjust the temperature of the cooler to the working temperature. The clean air that has passed through the filter module flows through the cooler. The cooler exchanges heat with the clean air and adjusts the temperature of the clean air. After the clean air enters the sealed space, the temperature of the sealed space is adjusted to the working temperature.

[0023] Step 3: Start the environmental constant humidity equipment, adjust the humidity of the humidifying water curtain to the working humidity, and the clean air passing through the surface cooler flows through the humidifying water curtain. The humidifying water curtain exchanges heat with the clean air and adjusts the humidity of the clean air. After the clean air enters the sealed space, the humidity of the sealed space is adjusted to the working humidity;

[0024] Step 4: Start the rubber plate constant temperature device to adjust the temperature of the antifreeze to the working temperature. The rubber plate constant temperature device drives the antifreeze to circulate between the rubber plate constant temperature device and the first pipeline. The antifreeze in the first pipeline exchanges heat with the polishing rubber plate and adjusts the temperature of the polishing rubber plate to the working temperature.

[0025] Step 5: Rubber plate adjustment. After the temperature of the polishing rubber plate and the sealed space is constant, drop the calibration plate, control the pressure, and make corrections to the polishing rubber plate and the calibration plate.

[0026] Step 6: Sample verification test. During the calibration process of the polishing rubber plate and the calibration disc, a process inspection sample identical to the polishing rubber plate is set on the rubber plate base. After running for a preset time, the process inspection sample is separated from the rubber plate base and sent to the quality inspection department for surface inspection. Steps 5 and 6 are repeated until the surface parameters and finish parameters of the process inspection sample meet the standards.

[0027] Step 7: Ring polishing of the optical element.

[0028] The beneficial effects of the intelligent ring polishing machine and the control method thereof provided by the present invention are at least:

[0029] The present application uses a rubber plate constant temperature device to pump constant temperature antifreeze into the first pipeline and circulate the antifreeze in the first pipeline, so as to evenly and quickly adjust the temperature of the polishing rubber plate. Compared with manual operation or temperature control methods such as pouring fluid medium on the polishing rubber plate, this significantly improves the adjustment accuracy and efficiency.

[0030] The present application maintains the temperature of the antifreeze at a set temperature through a rubber plate constant temperature device to ensure the accuracy of temperature adjustment, and by driving the antifreeze to circulate between the rubber plate constant temperature device and the first pipeline, the temperature of the polishing rubber plate can be kept at a set temperature in real time, thereby allowing the polishing rubber plate to always maintain a hardness corresponding to the optical element, thereby ensuring the accuracy of the polishing rubber plate adjustment.

[0031] Depending on the processing material, the present application can select different temperatures through the rubber plate constant temperature equipment to control the temperature of the polishing rubber plate, thereby controlling the hardness of the rubber plate, solving the problem of low matching and adjustment efficiency of the polishing rubber plate with different optical materials, and improving the utilization efficiency and application scope of the polishing rubber plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 A schematic diagram of the three-dimensional structure of the intelligent ring polishing machine provided in an embodiment of the present invention;

[0034] Figure 2 A schematic side cross-sectional view of a device body provided by an embodiment of the present invention;

[0035] Figure 3 A schematic diagram of the structure of the connection between the polishing base and the rubber plate constant temperature device provided in an embodiment of the present invention;

[0036] Figure 4 A schematic diagram of the internal structure of an intelligent polishing machine provided by an embodiment of the present invention;

[0037] Figure 5 This is a flow chart of a control method for an intelligent polishing machine provided in an embodiment of the present invention.

[0038] Among them, the reference numerals in the figure are:

[0039] 1. Equipment body; 11. Polishing base plate; 12. First pipeline; 13. Rotary sealing valve; 14. Polishing rubber plate; 15. Temperature probe;

[0040] 2. Rubber sheet constant temperature equipment;

[0041] 3. Protective cover; 31. Sealed space;

[0042] 4. Air purification component; 41. Fan; 42. Filter module; 43. Return air duct; 44. Fresh air duct;

[0043] 5. Environmental constant temperature equipment; 51. Temperature controller; 52. Surface cooler;

[0044] 6. Environmental constant humidity equipment; 61. Humidity controller; 62. Humidifying water curtain. DETAILED DESCRIPTION

[0045] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0046] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly or indirectly located on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positions shown in the accompanying drawings and are only for the convenience of description and cannot be understood as limitations on the present technical solution. The terms "first" and "second" are only used for the convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0047] A first aspect of the present invention provides an intelligent ring polishing machine. The intelligent ring polishing machine according to an embodiment of the present invention is described below in conjunction with the accompanying drawings.

[0048] See also Figure 1-Figure 3 , Figure 1-Figure 3 The schematic diagram of the structure of the intelligent ring polishing machine of the present application is shown. The intelligent ring polishing machine is used for polishing optical elements, and comprises an equipment body 1 and a rubber plate constant temperature device 2. The equipment body 1 is used for polishing optical elements.

[0049] Specifically, see Figure 1-Figure 3 The equipment body 1 includes a polishing base 11 and a driving mechanism (not shown) for driving the polishing base 11 to rotate. The polishing base 11 is provided with a first pipeline 12. The central axis of the polishing base 11 is provided with a rotary sealing valve 13. The liquid inlet end and the liquid outlet end of the first pipeline 12 are both connected to the rotary sealing valve 13. The polishing base 11 is provided with a polishing rubber plate 14 covering the first pipeline 12.

[0050] The rubber plate thermostatic device 2 is provided with antifreeze inside and is used to adjust the temperature of the antifreeze. The rubber plate thermostatic device 2 is connected to the rotary sealing valve 13 and is used to drive the antifreeze to circulate between the rubber plate thermostatic device 2 and the first pipeline 12.

[0051] When using the ring polishing machine, the polishing rubber plate 14 contacts the optical element and polishes it. It can be understood that the hardness of the polishing rubber plate 14 decreases after the temperature increases, and vice versa. Therefore, by changing the temperature of the polishing rubber plate 14, the hardness of the polishing rubber plate 14 can be adjusted, and the adjustment efficiency of the temperature of the polishing rubber plate 14 also affects the adjustment cycle and control accuracy of the polishing rubber plate 14.

[0052] In specific use, the corresponding temperature of the polishing rubber plate 14 is obtained according to the material of the optical element to be processed. The relationship between the material of the optical element and the temperature of the polishing rubber plate 14 can be obtained in the experiment. For example, when the material of the optical element is quartz glass, the required temperature of the polishing rubber plate 14 is 22°C, and when the material of the optical element is flint glass, the required temperature of the polishing rubber plate 14 is 26°C. Then, when processing optical elements made of quartz glass, the temperature of the antifreeze is adjusted to 22°C by the rubber plate constant temperature device 2. After the antifreeze enters the first pipeline 12, the temperature of the polishing rubber plate 14 covering the first pipeline 12 is adjusted. The circulating antifreeze maintains the temperature of the polishing rubber plate 14 at a constant temperature of 22°C, thereby adjusting and maintaining the hardness of the polishing rubber plate 14 in a state suitable for polishing quartz glass.

[0053] When adjusting the polishing rubber plate 14 by traditional processes, it is necessary to manually adjust the temperature of the polishing rubber plate 14, or directly replace the polishing rubber plate 14 with different hardness, which is complicated to operate and has low adjustment accuracy and efficiency. The present application uses the rubber plate constant temperature device 2 to pump the constant temperature antifreeze into the first pipeline 12 and circulate the antifreeze in the first pipeline 12, so as to evenly and quickly adjust the temperature of the polishing rubber plate 14. Compared with the manual operation or the temperature adjustment method of pouring the fluid medium on the polishing rubber plate 14, the adjustment accuracy and efficiency are significantly improved.

[0054] At the same time, the present application maintains the temperature of the antifreeze at the set temperature through the rubber plate constant temperature device 2 to ensure the accuracy of temperature adjustment, and by driving the antifreeze to circulate between the rubber plate constant temperature device 2 and the first pipeline 12, the temperature of the polishing rubber plate 14 can be maintained at the set temperature in real time, thereby making the polishing rubber plate 14 always maintain the hardness corresponding to the optical element, thereby ensuring the accuracy of the adjustment of the polishing rubber plate 14.

[0055] Furthermore, depending on the different processing materials, the present application can select different temperatures through the rubber plate constant temperature equipment 2 to control the temperature of the polishing rubber plate 14, thereby controlling the hardness of the rubber plate, solving the problem of low matching and adjustment efficiency of the polishing rubber plate 14 with different optical materials, and improving the utilization efficiency and application scope of the polishing rubber plate 14.

[0056] In some embodiments, the temperature control range of the polishing rubber plate 14 is 15 to 30°C, the temperature control accuracy is 0.2°C, and the temperature change rate is 0 to 120 minutes. When the hardness of the polishing rubber plate 14 is changed, the polishing rubber plate 14 can quickly meet the polishing requirements. Furthermore, by controlling the rubber plate constant temperature device 2 through intelligent data control PLC, the temperature of the polishing rubber plate 14 can quickly meet the polishing requirements, so that the polished products can be quickly put into production.

[0057] In some embodiments, see Figure 2-Figure 3 The first pipeline 12 is spirally distributed around the central axis of the polishing base 11 between the polishing base 11 and the polishing rubber plate 14, so that the first pipeline 12 can be evenly distributed on the polishing base 11. The first pipeline 12 can evenly heat the polishing rubber plate 14 to make the temperature of each area of ​​the polishing rubber plate 14 the same, thereby ensuring the uniformity of the hardness of the polishing rubber plate 14.

[0058] Furthermore, the first pipeline 12 uses a copper tube with good thermal conductivity, and is connected to the polishing base 11 of the ring polishing machine through the first pipeline 12 by a high-precision constant temperature controller. A receiving groove is preset on the surface of the polishing base 11 facing the polishing rubber plate 14, and the receiving groove is spirally distributed on the surface of the polishing base 11. The first pipeline 12 is matched and installed in the receiving groove to facilitate the installation of the first pipeline 12. After the first pipeline 12 is installed, the surface of the polishing base 11 is flat, which is convenient for setting the polishing rubber plate 14 and reducing the impact on the shape of the polishing rubber plate 14. The surface of the polishing rubber plate 14 after setting can be kept flat, which is conducive to subsequent polishing operations.

[0059] In some embodiments, the device body 1 has an overall structure with dimensions of 4000x4000x2000mm, the polishing base 11 has a diameter of 2000mm and a thickness of 200mm; on the upper surface of the polishing base 11, ∮10mm copper tubes are arranged in a spiral shape at intervals of 50mm, and finally, the liquid inlet and outlet ends of the copper tubes converge at a position within the range of ∮100mm in the central area of ​​the polishing base 11, and a rotary sealing valve 13 is provided at this position that passes through the upper and lower surfaces of the polishing base 11, and the liquid inlet and outlet ends of the copper tubes are connected to the rotary sealing valve 13.

[0060] Furthermore, the rotary sealing valve 13 is a hydraulic-electric rotary joint.

[0061] Furthermore, in order to improve the accuracy of temperature control of the polishing rubber plate 14, a temperature probe 15 is provided on the polishing base plate 11, and the temperature probe 15 is electrically connected to the rubber plate constant temperature device 2 and is used to detect the temperature of the polishing rubber plate 14. When the temperature of the polishing rubber plate 14 is adjusted, the temperature probe 15 can detect the temperature of the polishing rubber plate 14 in real time and feed the detected temperature back to the rubber plate constant temperature device 2, and the rubber plate constant temperature device 2 is provided with a liquid crystal screen and displays the detected temperature, so that the actual temperature of the polishing rubber plate 14 can be observed in real time.

[0062] Among them, due to the heat transfer between the media, there will be heat loss. Therefore, when the temperature of the antifreeze is 22°C, the temperature that the polishing rubber plate 14 can reach may be 21.5°C. At this time, the polishing rubber plate 14 has not reached the required adjustment of 22°C. In this case, the temperature probe 15 can timely feedback the detection temperature, and the staff can adjust the rubber plate constant temperature equipment 2 to appropriately increase the temperature of the antifreeze so that the temperature of the polishing rubber plate 14 reaches 22°C, reducing the impact of heat loss and improving the accuracy of temperature control of the polishing rubber plate 14.

[0063] In some embodiments, the rubber plate constant temperature device 2 includes a first cavity, a first temperature regulator and a first pump body, the first cavity is used to place the antifreeze liquid, the first temperature regulator is used to adjust the temperature of the antifreeze liquid, and the first pump body is connected to the first cavity and is connected to the rotary sealing valve 13 through the second pipeline. When the rubber plate constant temperature device 2 is working, the first temperature regulator adjusts the antifreeze liquid to a preset temperature, the first pump body is started and pumps the antifreeze liquid into the rotary sealing valve 13, the antifreeze liquid flows into the first pipeline 12 from the liquid inlet end of the first pipeline 12, and flows back to the rotary sealing valve 13 from the liquid outlet end, and then flows back into the first cavity, thereby realizing the circulation of the antifreeze liquid.

[0064] It is understandable that since the optical element needs to achieve a very high degree of finish, when polishing the optical element, if the air cleanliness in the environment is not high and there are suspended particles or dust, it is inevitable that these suspended particles and dust will be adsorbed on the optical element and participate in the polishing and grinding, resulting in a decrease in the surface finish of the processed optical element. In some embodiments, see Figure 1-Figure 3 The intelligent ring polishing machine also includes a protective cover 3 and a clean air component 4. The protective cover 3 is used to provide a sealed space 31 for the polishing base 11 and the polishing rubber plate 14. The clean air component 4 is used to filter and purify the air in the sealed space 31 to create a high-cleanliness working environment for the optical components.

[0065] Specifically, see Figure 1-Figure 3The protective cover 3 is arranged on the equipment body 1 and encloses the equipment body 1 to form a sealed space 31. The polishing base plate 11 and the polishing rubber plate 14 are located in the sealed space 31. The air purification component 4 includes a fan 41, a filter module 42, a return air duct 43, and a fresh air duct 44. The air outlet of the fan 41 is connected to the sealed space 31, the filter module 42 is connected to the air outlet of the fan 41, the return air duct 43 is connected to the sealed space 31 and connected to the air inlet of the fan 41, and the fresh air duct 44 is connected to the air inlet of the fan 41 and connected to the outside of the sealed space 31.

[0066] Among them, the protective cover 3 is detachably connected to the equipment body 1. After the protective cover 3 is installed, the polishing base 11 and the polishing rubber plate 14 are covered inside it to form a sealed space 31 for polishing the optical element. The sealed space 31 is isolated from the external environment of the protective cover 3.

[0067] When the air purification component 4 is working, the fan 41 is turned on, and the air at the air outlet of the fan 41 becomes clean air after being filtered by the filter module 42 and enters the sealed space 31. The original air in the sealed space 31 enters the return air duct 43 under the action of the airflow, and the original air entering the return air duct 43 flows back to the air inlet end of the fan 41, and continues to be filtered from the air outlet end of the fan 41 as the initial air, and then enters the sealed space 31, thereby realizing the circulation filtration of the air in the sealed space 31. At the same time, a fresh air duct 44 connected to the air inlet end of the fan 41 is provided, and the fresh air duct 44 is connected to the outside of the sealed space 31. The fresh air duct 44 and the return air duct 43 take in air at the same time, which can keep the air pressure in the sealed space 31 stable.

[0068] After the air purification component 4 works, the air purification component 4 can circulate and filter the air in the sealed space 31, greatly improving the air cleanliness in the sealed space 31, and under the isolation effect of the protective cover 3, the air in the sealed space 31 is kept from being polluted by the external air. When the filtration system with a cleanliness level of 100 is used for circulation filtration, the cleanliness level in the sealed space 31 can be maintained at 100 levels, so that the space in the polishing area of ​​the equipment body 1 reaches ultrafiltration conditions when the equipment body 1 is running, ensuring that the finish problem caused by external environmental factors will no longer occur.

[0069] In some embodiments, the fan 41 of the air purification component 4 is arranged outside the sealed space 31, the air outlet end of the fan 41 is provided with a pipe and connected to the sealed space 31, the filter module 42 is arranged in the pipeline or at the port of the pipeline, a part of the return air duct 43 is located in the sealed space 31, and the other part extends out of the sealed space 31 and is connected to the air inlet end of the fan 41.

[0070] Of course, the fan 41 of the air purification component 4 can also be arranged inside the sealed space 31. In this case, the return air duct 43 is completely located inside the sealed space 31, and one end of the fresh air duct 44 is connected to the air inlet end of the fan 41, and the other end extends outside the sealed space 31. The present application does not specifically limit the location of the air purification component 4, so long as the circulation and filtration of the air in the sealed space 31 can be achieved.

[0071] In some embodiments, the filter module 42 is a FFU (Fan Filter Units) air filter.

[0072] When the ring polishing machine processes optical elements, the temperature of the processing environment also affects the temperature of the polishing rubber plate 14, and then affects the hardness of the polishing rubber plate 14. For example, if the temperature of the antifreeze in the first pipeline 12 is 22°C, but the temperature of the processing environment is 10°C, that is, the temperature in the sealed space 31 is 10°C, then the temperature difference between the upper and lower surfaces of the polishing rubber plate 14 will be large, and there will be a temperature difference in various areas of the polishing rubber plate 14. The temperature adjustment of the polishing rubber plate 14 will be inaccurate, affecting the polishing effect. Therefore, the temperature of the processing environment also plays a key role in the temperature and hardness adjustment of the polishing rubber plate 14.

[0073] To further improve the accuracy and efficiency of temperature and hardness regulation of the polishing rubber plate 14, in some embodiments, refer to Figure 1-Figure 4 The intelligent ring polishing machine also includes an environmental constant temperature device 5, which includes a temperature controller 51 and a surface cooler 52. The temperature controller 51 is used to adjust the temperature of the surface cooler 52, and the surface cooler 52 is directly opposite to the air outlet of the fan 41.

[0074] When the ambient thermostat 5 is working, the temperature controller 51 adjusts the temperature of the cooler 52 to the preset temperature according to the setting. For example, when the material of the optical element is quartz glass, the preset temperature is 22°C. Combined with the fan 41 component, when the fan 41 is started, the flowing air at the outlet of the fan 41 exchanges heat with the cooler 52, and the temperature in the sealed space 31 is gradually adjusted to the preset temperature through the circulation of air in the sealed space 31. In this way, the sealed space 31 can be kept at a constant temperature. Combined with the temperature regulation of the polishing rubber plate 14 by the rubber plate thermostat 2, it can ensure that the polishing rubber plate 14 is more efficiently adjusted to the preset temperature and can be maintained at the preset temperature. At the same time, the temperature of each area of ​​the polishing rubber plate 14 is evenly regulated, thereby improving the process accuracy of optical element processing.

[0075] In some embodiments, the environmental thermostatic device 5 further includes a second cavity and a second pump body. The second cavity is used to place a fluid medium, which may be antifreeze or water. The temperature controller 51 is used to adjust the temperature of the fluid medium. The second pump body is connected to the second cavity and is connected to the cooler 52 through the third pipeline. When the environmental thermostatic device 5 is working, the temperature controller 51 adjusts the fluid medium to a preset temperature, the second pump body starts and pumps the fluid medium into the cooler 52, the fluid medium flows into the cooler 52 from the third pipeline, then flows back into the third pipeline, and finally flows back to the second pump body. After entering the cooler 52, the fluid medium exchanges heat with the cooler 52, thereby achieving temperature adjustment of the cooler 52.

[0076] Furthermore, the environmental thermostatic device 5 also includes a temperature sensor, which is arranged in the sealed space 31 and electrically connected to the environmental thermostatic device 5. The temperature sensor detects the temperature in the sealed space 31 in real time and sends the detection result to the environmental thermostatic device 5. The environmental thermostatic device 5 is provided with a LCD screen and displays the detection result, so that the actual temperature in the sealed space 31 can be observed in real time.

[0077] When the ring polishing machine processes optical elements, the humidity of the processing environment also affects the hardness of the polishing rubber plate 14. For example, when the temperature of the polishing rubber plate 14 is the same, the hardness of the polishing rubber plate 14 when the ambient humidity is 60% is lower than the hardness when the ambient humidity is 40%. Therefore, the humidity of the processing environment plays a certain role in adjusting the hardness of the polishing rubber plate 14.

[0078] In order to adjust the polishing rubber plate 14 to a suitable hardness more accurately, in some embodiments, refer to Figure 1-Figure 4 The intelligent ring polishing machine also includes an environmental constant humidity device 6, which includes a humidity controller 61 and a humidifying water curtain 62. The humidity controller 61 is used to adjust the humidity of the humidifying water curtain 62, and the humidifying water curtain 62 is directly opposite to the air outlet of the fan 41.

[0079] When the environmental constant humidity device 6 is working, the humidity controller 61 is started to adjust the humidity of the humidifying water curtain 62. For example, when the material of the optical element is quartz glass, the preset humidity is 50%. If the humidity in the sealed space 31 is 40% at this time, the hardness of the polishing rubber plate 14 will be greater than the required hardness. Then, in combination with the fan 41 component, when the fan 41 is started, the flowing air at the outlet of the fan 41 passes through the humidifying water curtain 62 and takes away the water vapor on the humidifying water curtain 62, and then brings the water vapor into the sealed space 31 and flows with the air circulation, and gradually adjusts the humidity in the sealed space 31 to the preset humidity. In this way, the sealed space 31 can be kept at a constant humidity. Combined with the temperature regulation of the polishing rubber plate 14 by the rubber plate constant temperature device 2 and the temperature regulation of the environment by the environmental constant temperature device 5, the polishing rubber plate 14 is at a suitable temperature and humidity, and the polishing rubber plate 14 can be accurately adjusted and maintained at the preset hardness, further improving the process accuracy of optical element processing.

[0080] In some embodiments, the environmental constant humidity device 6 includes a third cavity and a third pump body. The third cavity is used to place water. The third pump body is connected to the third cavity and is connected to the humidification water curtain 62 through a fourth pipeline. When the environmental constant humidity device 6 is working, the third pump body starts and pumps water into the liquid inlet end of the humidification water curtain 62 to adjust the humidity of the humidification water curtain 62, and the water flows back to the third cavity from the liquid outlet end of the humidification water curtain 62, thereby achieving humidity adjustment of the humidification water curtain 62.

[0081] Furthermore, the environmental constant humidity device 6 also includes a humidity sensor, which is arranged in the sealed space 31 and electrically connected to the environmental constant humidity device 6. The humidity sensor detects the humidity in the sealed space 31 in real time and sends the detection result to the environmental constant humidity device 6. The environmental constant humidity device 6 is provided with a LCD screen and displays the detection result, so that the actual humidity in the sealed space 31 can be observed in real time.

[0082] In some embodiments, see Figure 4, the filter module 42, the cooler 52, and the humidifying water curtain 62 are sequentially arranged at the outlet of the fan 41. That is to say, the air at the outlet of the fan 41 is purified by the filter module 42, then the temperature is adjusted by the cooler 52, and then the humidifying water curtain 62 is humidified, and finally enters the sealed space 31. The advantage of such a setting is that the air is first purified by the filter module 42 to obtain clean air, and when it passes through the cooler 52 and the humidifying water curtain 62 later, it will not pollute the cooler 52 and the humidifying water curtain 62, thereby improving the regulation efficiency and service life of the cooler 52 and the humidifying water curtain 62. The air is first temperature-regulated by the cooler 52 before passing through the humidifying water curtain 62, which can better ensure the humidification effect and humidification efficiency. If the air passes through the humidifying water curtain 62 first and then the cooler 52, then the cooler 52 will change the humidity of the air when performing temperature regulation, resulting in inaccurate humidity regulation in the sealed space 31 and increasing the regulation power consumption.

[0083] Furthermore, the filter module 42, the surface cooler 52, and the humidifying water curtain 62 are integrated into an integral structure in a sequential order. The filter module 42, the surface cooler 52, and the humidifying water curtain 62 are independent and detachable functional modules, which are convenient for replacement and maintenance when one of the functional modules fails.

[0084] Furthermore, the intelligent ring polishing machine also includes an intelligent control module (not shown), which is electrically connected to the rubber plate constant temperature device 2, the environmental constant temperature device 5, and the environmental constant humidity device 6. The intelligent control module is used to match the hardness of the polishing rubber plate 14 according to the material of the optical element and determine the working temperature (preset temperature) and working humidity (preset humidity) of the polishing rubber plate 14. The rubber plate constant temperature device 2 is used to adjust the antifreeze to the working temperature of the polishing rubber plate 14, the temperature controller 51 is used to adjust the surface cooler 52 to the working temperature of the polishing rubber plate 14, and the humidity controller 61 is used to adjust the humidifying water curtain 62 to the working humidity of the polishing rubber plate 14.

[0085] In some embodiments, the temperature sensor and the humidity sensor are electrically connected to the intelligent control module, and the temperature sensor and the humidity sensor send their detection results to the intelligent control module. The intelligent control module controls the braking of the temperature controller 51 and the humidity controller 61 according to the detection results. When the ambient temperature and the ambient humidity do not reach the working temperature and the working humidity, the intelligent control module controls the temperature controller 51 and the humidity controller 61 to adjust repeatedly until the ambient temperature and the ambient humidity reach the working temperature and the working humidity, and maintain the ambient temperature and the ambient humidity at the working temperature and the working humidity.

[0086] Furthermore, the intelligent control module, the temperature controller 51 and the humidity controller 61 are multi-channel integrated editable logic controllers, and illustratively, may be editable logic controllers of model 6ES7414-3EM07-0AB0.

[0087] In some embodiments, the intelligent ring polishing machine also includes a workpiece disk (not shown) and a correction disk (not shown), the workpiece disk is used to clamp the optical element, the polishing rubber plate 14 is used to polish the optical element, and the correction disk is used to conform to and correct the polishing rubber plate 14.

[0088] The second aspect of the present invention provides a control method for an intelligent ring polishing machine, which is applied to the intelligent ring polishing machine in the above-mentioned embodiment. Figure 5 , including the following steps:

[0089] Step S1: Start the air purification component 4. After the fan 41 is running, the initial air of the fresh air duct 44 and the return air duct 43 is discharged from the air outlet. The filter module 42 filters the initial air to obtain clean air. The clean air enters the sealed space 31 enclosed by the protective cover 3 and the equipment body 1. The original air in the sealed space 31 enters the return air duct 43 and re-enters the fan 41 as the initial air, thereby realizing the circulation filtration of the air in the sealed space 31.

[0090] Step S2: Start the environmental constant temperature device 5, adjust the temperature of the surface cooler 52 to the working temperature, and the clean air passing through the filter module 42 flows through the surface cooler 52. The surface cooler 52 exchanges heat with the clean air and adjusts the temperature of the clean air. After the clean air enters the sealed space 31, the temperature of the sealed space 31 is adjusted to the working temperature.

[0091] Step S3: Start the environmental constant humidity equipment 6, adjust the humidity of the humidifying water curtain 62 to the working humidity, and the clean air passing through the surface cooler 52 flows through the humidifying water curtain 62. The humidifying water curtain 62 exchanges heat with the clean air and adjusts the humidity of the clean air. After the clean air enters the sealed space 31, the humidity of the sealed space 31 is adjusted to the working humidity.

[0092] Step S4: Start the rubber plate constant temperature device 2 and adjust the temperature of the antifreeze to the working temperature. The rubber plate constant temperature device 2 drives the antifreeze to circulate between the rubber plate constant temperature device 2 and the first pipeline 12. The antifreeze in the first pipeline 12 exchanges heat with the polishing rubber plate 14 and adjusts the temperature of the polishing rubber plate 14 to the working temperature.

[0093] Step S5: Rubber plate adjustment. After the temperature of the polishing rubber plate 14 and the sealed space 31 is constant, the calibration plate is dropped, the pressure is controlled, and the polishing rubber plate 14 and the calibration plate are corrected to match.

[0094] Step S6: Sample verification test. When the polishing rubber plate 14 and the calibration disk are in compliance, a process inspection sample identical to the polishing rubber plate 14 is set on the rubber plate base. After running for a preset time, the process inspection sample is separated from the rubber plate base and sent to the quality inspection department for surface inspection. Steps 5 and 6 are repeated until the surface parameters and smoothness parameters of the process inspection sample meet the standards.

[0095] Step S7: performing ring polishing on the optical element.

[0096] The control method of the intelligent ring polishing machine of the present application makes the processing efficiency and product transformation of the product simpler and the personnel can easily replicate the product through the constant temperature control of the polishing rubber plate 14 and the constant temperature and humidity control of the local environment. At the same time, it greatly reduces the energy consumption of environmental control, saving energy consumption ≥ 70%.

[0097] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent ring polishing machine for polishing optical elements, characterized in that: include: The device body includes a polishing base and a driving mechanism for driving the polishing base to rotate, the polishing base is provided with a first pipeline, the central axis of the polishing base is provided with a rotary sealing valve, the liquid inlet and liquid outlet of the first pipeline are both connected to the rotary sealing valve, and the polishing base is provided with a polishing rubber plate covering the first pipeline; the device body also includes a workpiece disk and a correction disk, the workpiece disk is used to clamp the optical element, the polishing rubber plate is used to polish the optical element, and the correction disk is used to conform to and correct the polishing rubber plate; A rubber plate thermostatic device, which is provided with antifreeze liquid inside and is used to adjust the temperature of the antifreeze liquid to the working temperature of the polishing rubber plate, the rubber plate thermostatic device is connected to the rotary sealing valve, and the rubber plate thermostatic device is used to drive the antifreeze liquid to circulate between the rubber plate thermostatic device and the first pipeline; Environmental thermostatic equipment, used to adjust the temperature of the processing environment to the working temperature of the polishing rubber plate; Environmental constant humidity equipment, used to adjust the humidity of the processing environment to the working humidity of the polishing rubber plate; The intelligent control module is electrically connected to the rubber plate constant temperature device, the environmental constant temperature device and the environmental constant humidity device respectively, and is used to match the hardness of the polishing rubber plate according to the material of the optical element and determine the working temperature and working humidity of the polishing rubber plate.

2. The intelligent ring polishing machine according to claim 1, characterized in that: The first pipeline is spirally distributed around the central axis of the polishing base and between the polishing base and the polishing rubber plate.

3. The intelligent ring polishing machine according to claim 1, characterized in that: The polishing base is provided with a temperature probe, which is electrically connected to the rubber plate constant temperature device and is used to detect the temperature of the polishing rubber plate.

4. The intelligent ring polishing machine according to any one of claims 1-3, characterized in that: Also includes, A protective cover, which is arranged on the equipment body and encloses the equipment body to form a sealed space, and the polishing base plate and the polishing rubber plate are located in the sealed space; The air purification component includes a fan, a filter module, a return air duct, and a fresh air duct. The air outlet end of the fan is connected to the sealed space, the filter module is connected to the air outlet end of the fan, the return air duct is connected to the sealed space and connected to the air inlet end of the fan, and the fresh air duct is connected to the air inlet end of the fan and connected to the outside of the sealed space.

5. The intelligent ring polishing machine according to claim 4, characterized in that: The environmental constant temperature equipment includes a temperature controller and a surface cooler. The temperature controller is used to adjust the temperature of the surface cooler to the working temperature of the polishing rubber plate. The surface cooler is directly opposite to the air outlet end of the fan.

6. The intelligent ring polishing machine according to claim 5, characterized in that: The environmental constant humidity equipment includes a humidity controller and a humidifying water curtain. The humidity controller is used to adjust the humidity of the humidifying water curtain to the working humidity of the polishing rubber plate. The humidifying water curtain faces the air outlet of the fan.

7. The intelligent ring polishing machine according to claim 6, characterized in that: The filter module, the surface cooler, and the humidifying water curtain are sequentially arranged at the air outlet end of the fan.

8. A control method for an intelligent ring polishing machine, applied to the intelligent ring polishing machine as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: Start the air purification component. After the fan is running, the initial air of the fresh air duct and the return air duct is discharged from the air outlet. The filter module filters the initial air to obtain clean air. The clean air enters the sealed space surrounded by the protective cover and the equipment body. The original air in the sealed space enters the return air duct and re-enters the fan as the initial air, so as to realize the circulation filtration of the air in the sealed space; Step 2: Start the environment thermostat and adjust the temperature of the cooler to the working temperature. The clean air that has passed through the filter module flows through the cooler. The cooler exchanges heat with the clean air and adjusts the temperature of the clean air. After the clean air enters the sealed space, the temperature of the sealed space is adjusted to the working temperature. Step 3: Start the environmental constant humidity equipment, adjust the humidity of the humidifying water curtain to the working humidity, and the clean air passing through the surface cooler flows through the humidifying water curtain. The humidifying water curtain exchanges heat with the clean air and adjusts the humidity of the clean air. After the clean air enters the sealed space, the humidity of the sealed space is adjusted to the working humidity; Step 4: Start the rubber plate constant temperature device to adjust the temperature of the antifreeze to the working temperature. The rubber plate constant temperature device drives the antifreeze to circulate between the rubber plate constant temperature device and the first pipeline. The antifreeze in the first pipeline exchanges heat with the polishing rubber plate and adjusts the temperature of the polishing rubber plate to the working temperature. Step 5: Rubber plate adjustment. After the temperature of the polishing rubber plate and the sealed space is constant, drop the calibration plate, control the pressure, and make corrections to the polishing rubber plate and the calibration plate. Step 6: Sample verification test. During the calibration process of the polishing rubber plate and the calibration disc, a process inspection sample identical to the polishing rubber plate is set on the rubber plate base. After running for a preset time, the process inspection sample is separated from the rubber plate base and sent to the quality inspection department for surface inspection. Steps 5 and 6 are repeated until the surface parameters and finish parameters of the process inspection sample meet the standards. Step 7: Ring polishing of the optical element.

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