Optical lens surface processing fine grinding machine

Abstract

The utility model discloses an optical lens surface processing fine grinding machine, including first casing and second casing, first casing is located at the top of second casing, the top of second casing is connected with the bottom of first casing, the top half of second casing is hollow, the inside installation of first casing is used for the air exhaust component of the air extraction of second casing inside makes the air pressure reduction, one end of exhaust component extends to the outside of first casing, the other end of exhaust component extends to the inside of second casing, the cooperation of the inflation assembly and the cooling assembly of the utility model, utilize liquid nitrogen to be able to directly to the heat of grinding to carry out the cooling, effectively control the temperature in the fine grinding process of lens, make the grinding area keep low temperature, reduce thermal deformation, improve the size accuracy and surface flatness of workpiece, avoid the damage or influence of lens because of high temperature to its optical performance and quality, improve the grinding efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical lens surface processing precision grinding machine technical field, specifically to a kind of optical lens surface processing precision grinding machine. BACKGROUND

[0002] Optical lens is indispensable key component in optical instrument and equipment, is widely used in photography, medical equipment, aerospace, military, communication, virtual reality and augmented reality and many other fields.For example, in the photography field, high-quality optical lens can ensure the definition, color fidelity and contrast of imaging;In the medical field, optical lens used in microscope, endoscope and other equipment need to have very high precision and imaging quality to help doctors accurately observe the internal structure of human body.

[0003] Chinese patent number: CN219337191U, a kind of optical lens automatic precision grinding machine, it includes workbench, the workbench is fixedly provided with fixed block, the fixed block is rotatably provided with precision grinding wheel, the fixed block is provided with the drive source that drives precision grinding wheel rotation, the workbench top wall is fixedly provided with working stand, the both ends of the working stand are rotatably provided with mounting rod, the mounting rod is movably provided with suction disc for abutting optical lens, the workbench is provided with the first drive assembly that drives mounting rod rotation, the present application has the effect of reducing the work intensity of staff.

[0004] The above patent also has some defects, the air blower blows the powder generated in the precision grinding process to the containing groove, without directly aiming at the heat generated in the precision grinding process due to friction for effective cooling treatment, which may not be able to well solve the problem of damage or affect the optical performance and quality of the lens due to high temperature, for high-precision optical lens precision grinding that needs to strictly control temperature, this way may not be enough to meet the requirements, so we need to put forward a kind of optical lens surface processing precision grinding machine. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of optical lens surface processing precision grinding machine to solve the problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of optical lens surface processing precision grinding machine, including first shell and second shell, the first shell is located at the top of second shell, the top of second shell is connected with the bottom of first shell, the top half of second shell is hollow;

[0007] The inside of the first shell is provided with exhaust component for extracting air in the second shell to reduce air pressure, one end of the exhaust component extends to the outside of the first shell, the other end of the exhaust component extends to the inside of the second shell;

[0008] An air charging assembly is mounted on the outside of the second shell for charging the inside of the second shell with liquid nitrogen, one end of the air charging assembly penetrates the outside of the first shell and extends to the hollow part at the top of the second shell;

[0009] A dust suction assembly is mounted on the outside of the second shell for absorbing the generated dust, one end of the dust suction assembly extends to the inside of the second shell;

[0010] A cooling assembly is mounted in the inside of the second shell for cooling the heat generated by grinding.

[0011] Preferably, the exhaust assembly comprises a first exhaust pipe, a vacuum pump and a first air inlet pipe, the vacuum pump is located in the inside of the first shell, one end of the first air inlet pipe communicates with the air inlet end of the vacuum pump, the other end of the first air inlet pipe extends to the inside of the second shell and communicates with the second shell, one end of the first exhaust pipe communicates with the exhaust end of the vacuum pump, the other end of the first exhaust pipe away from the exhaust end of the vacuum pump extends to the outside of the first shell.

[0012] Preferably, the air charging assembly comprises a liquid nitrogen bottle and a first air supplement pipe, the liquid nitrogen bottle is located on the outside of the second shell, the exhaust end of the liquid nitrogen bottle communicates with one end of the first air supplement pipe, the other end of the first air supplement pipe penetrates the outside of the first shell and extends to the inside of the second shell and communicates with the hollow part of the second shell, the surface of the first air supplement pipe is provided with a first valve and a nitrogen leakage detector.

[0013] Preferably, the dust suction assembly comprises a dust collector, a fixed plate and an air suction pipe, the dust collector is mounted on the outside of the second shell through the fixed plate, a square groove is formed in the inside of the rear part of the first shell, a plurality of round holes are formed in one side of the square groove in the inside of the second shell, the round holes are located on the inner wall of the second shell, one end of the air suction pipe communicates with the dust suction port of the dust collector, the other end of the air suction pipe away from the dust suction port of the dust collector communicates with the square groove, and a second valve is mounted on the surface of the air suction pipe.

[0014] Preferably, the cooling assembly comprises a hollow plate and a jet head, the hollow plate is mounted on the top of the second shell and communicates with the hollow part at the top of the second shell, and the jet head is mounted on the surface of the hollow plate and one end of the jet head communicates with the hollow plate.

[0015] Preferably, an electric push rod is mounted on the top of the first shell, the piston rod of the electric push rod penetrates the top center of the second shell and extends to the inside of the second shell, a grinding knife is mounted on the bottom of the piston rod of the electric push rod, a moving seat is mounted on the bottom of the second shell, a recess is formed on the surface of the moving seat, and a first electric sliding table is mounted in the recess.

[0016] Preferably, a first connecting block is installed on the surface of the slider of the first electric slide, the bottom of the first connecting block is connected to the slider of the first electric slide, a suction cup is connected to the top of the first connecting block, a sliding groove is opened at the bottom of the movable seat, a slide rail adapted to the sliding groove is installed at the bottom of the second housing, an elongated groove is opened in the middle of the bottom of the movable seat, an elongated box corresponding to the elongated groove is installed at the bottom of the elongated groove, a second electric slide is installed inside the elongated box, and the slider of the second electric slide is connected to the bottom of the movable seat.

[0017] Preferably, a controller and a plate pressure sensor are installed inside the first housing, a temperature sensor is installed on the surface of the grinding blade, the controller is electrically connected to the plate pressure sensor and the temperature sensor respectively, a protective shell is provided outside the liquid nitrogen cylinder, a protective door is provided on the surface of the protective shell, a box door is provided on the surface of the second housing, and a handle is provided on the surface of the box door.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This invention utilizes a combination of an inflation component and a cooling component to directly cool the heat generated during grinding using liquid nitrogen. This effectively controls the temperature during the lens grinding process, keeping the grinding area at a low temperature, reducing thermal deformation, improving the dimensional accuracy and surface flatness of the workpiece, preventing the lens from being damaged by high temperatures or affecting its optical performance and quality, and improving grinding efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the second shell of this utility model;

[0022] Figure 3 This is a schematic diagram of the cooling component structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the exhaust assembly structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the inflatable component structure of this utility model;

[0025] Figure 6 This is a schematic diagram of the dust collection component structure of this utility model.

[0026] In the diagram: 1. First housing; 2. Second housing; 3. First exhaust pipe; 4. Vacuum pump; 5. First air inlet pipe; 6. Liquid nitrogen cylinder; 7. First gas supply pipe; 8. First valve; 9. Nitrogen leak detector; 10. Vacuum cleaner; 11. Fixing plate; 12. Suction pipe; 13. Square groove; 14. Round hole; 15. Hollow plate; 16. Jet nozzle; 17. Electric push rod; 18. Grinding knife; 19. Moving seat; 20. Groove; 21. First electric slide; 22. First connecting block; 23. Suction cup; 24. Slide groove; 25. Slide rail; 26. Long groove; 27. Long box; 28. Second electric slide; 29. ​​Controller; 30. Plate pressure sensor; 31. Protective shell; 32. Protective door; 33. Box door; 34. Temperature sensor; 35. Handle. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-6 This utility model provides a technical solution: an optical lens surface processing precision grinding machine, including a first housing 1 and a second housing 2. The first housing 1 is located on top of the second housing 2, and the top of the second housing 2 is connected to the bottom of the first housing 1. The top half of the second housing 2 is hollow. The first housing 1 serves as the top structure of the equipment, providing installation space and protection for internal components such as the exhaust assembly and controller 29. At the same time, it works with the second housing 2 to form a relatively enclosed working environment. The second housing 2 is connected to the first housing 1 and is the main area for grinding work, accommodating the lens to be ground, the grinding blade 18, and related components such as cooling and dust extraction, providing a stable space for the entire grinding process.

[0029] An exhaust assembly for reducing air pressure by extracting air from the interior of the second housing 2 is installed inside the first housing 1. One end of the exhaust assembly extends to the outside of the first housing 1, and the other end extends to the inside of the second housing 2. The exhaust assembly includes a first exhaust pipe 3, a vacuum pump 4, and a first intake pipe 5. The vacuum pump 4 is located inside the first housing 1 and is the core power source of the exhaust assembly, generating suction through its operation. One end of the first intake pipe 5 is connected to the intake end of the vacuum pump 4, and the other end extends to and is connected to the interior of the second housing 2. The first intake pipe 5 introduces air from inside the second housing 2 into the vacuum pump 4. One end of the first exhaust pipe 3 is connected to the exhaust end of the vacuum pump 4. The first exhaust pipe 3 extends to the outside of the first housing 1 at the end furthest from the exhaust end of the vacuum pump 4. The first exhaust pipe 3 discharges the air extracted by the vacuum pump 4 to the outside of the first housing 1, thereby reducing the air pressure inside the second housing 2. This may help reduce the heat accumulation generated during the grinding process and also prevent external dust and other impurities from entering. After the vacuum pump 4 is started, it extracts the air from the second housing 2 through the first air inlet pipe 5, creating a relatively negative pressure environment inside the second housing 2. The extracted air is discharged to the outside of the first housing 1 through the first exhaust pipe 3, thereby controlling the air pressure inside the second housing 2. This helps prevent external dust and other impurities from entering and also provides a stable environment for subsequent grinding and cooling operations.

[0030] An inflation assembly for filling the interior of the second housing 2 with liquid nitrogen is installed on the outside of the first housing 1. One end of the inflation assembly passes through the exterior of the first housing 1 and extends to the hollow top of the second housing 2. The inflation assembly includes a liquid nitrogen bottle 6 and a first gas supply pipe 7. The liquid nitrogen bottle 6 stores liquid nitrogen to provide a low-temperature environment for the grinding area. The liquid nitrogen bottle 6 is located outside the second housing 2. The exhaust end of the liquid nitrogen bottle 6 is connected to one end of the first gas supply pipe 7. The end of the first gas supply pipe 7 away from the liquid nitrogen bottle 6 passes through the exterior of the first housing 1 and extends into the interior of the second housing 2, communicating with the hollow top of the second housing 2. The surface of the gas supply pipe 7 is equipped with a first valve 8 and a nitrogen leak detector 9. The first gas supply pipe 7 connects to the liquid nitrogen cylinder 6 and the second housing 2, serving as the channel for liquid nitrogen delivery. The first valve 8 controls the flow rate and speed of liquid nitrogen from the liquid nitrogen cylinder 6 into the second housing 2, which can be adjusted according to the temperature requirements during the actual grinding process. The nitrogen leak detector 9 monitors the first gas supply pipe 7 and its surrounding environment in real time. Once a nitrogen leak is detected, an alarm is issued promptly to ensure the safety of the operators and the normal operation of the equipment. When the first valve 8 is opened, liquid nitrogen flows from the liquid nitrogen cylinder 6 through the first gas supply pipe 7 into the hollow space at the top of the second housing 2. The liquid nitrogen vaporizes inside the second housing 2, absorbing a large amount of heat, thus cooling the equipment and protecting the lens and grinding blade 18 from damage due to high temperatures during the grinding process. The nitrogen leak detector 9 monitors for liquid nitrogen leaks in real time and issues an alarm upon detection to ensure the safety of the equipment and operators.

[0031] A dust-collecting assembly for absorbing generated dust is installed on the outside of the second housing 2. One end of the dust-collecting assembly extends into the interior of the second housing 2. The dust-collecting assembly includes a vacuum cleaner 10, a fixing plate 11, and a suction pipe 12. The vacuum cleaner 10 is installed on the outside of the second housing 2 via the fixing plate 11, which secures the vacuum cleaner 10 to the outside of the second housing 2, ensuring the stability of the vacuum cleaner 10 during operation. The vacuum cleaner 10 provides suction power and is the power source for absorbing dust generated during the grinding process. A square groove 13 is provided on the inner rear side of the first housing 1. The square groove 13 is located on the inner rear side of the first housing 1 and serves to collect dust and guide it into the suction pipe 12. Multiple round holes 1 are provided on one side of the square groove 13 inside the second housing 2. 4. The round hole 14 is located on the inner wall of the second housing 2. The round hole 14 helps the dust to enter the square groove 13 better and then be sucked away by the suction pipe 12. One end of the suction pipe 12 is connected to the suction port of the vacuum cleaner 10, and the end of the suction pipe 12 away from the suction port of the vacuum cleaner 10 is connected to the square groove 13. The suction pipe 12 connects the vacuum cleaner 10 and the square groove 13 inside the second housing 2, so that the suction force generated by the vacuum cleaner 10 can act on the second housing 2 and suck the dust into the vacuum cleaner 10. After the vacuum cleaner 10 is started, it generates suction force, which is connected to the square groove 13 and the round hole 14 through the suction pipe 12 to suck the dust in the second housing 2 into the vacuum cleaner 10. A second valve 36 is installed on the surface of the suction pipe 12. The second valve 36 is used to control the opening of the suction pipe 12.

[0032] The interior of the second housing 2 is equipped with a cooling component for cooling down the heat generated during grinding. The cooling component includes a hollow plate 15 and jet nozzles 16. The hollow plate 15 is installed on the top of the second housing 2 and communicates with the hollow part of the top of the second housing 2. The hollow plate 15 is installed on the top of the second housing 2 and communicates with the hollow part of the top, which plays the role of distributing liquid nitrogen so that the liquid nitrogen can flow evenly to each jet nozzle 16. The jet nozzles 16 are installed on the surface of the hollow plate 15, and one end of the jet nozzles 16 is connected to the hollow plate 15. The jet nozzles 16 are installed on the surface of the hollow plate 15 and spray liquid nitrogen onto the grinding area in a certain way to directly cool down the heat generated during grinding, protect the lens and the grinding blade 18, and avoid the optical performance and quality of the lens being affected by high temperature. After the liquid nitrogen enters the hollow part of the top of the second housing 2, it is evenly distributed through the hollow plate 15 and then sprayed out from the jet nozzles 16, directly acting on the grinding area to absorb heat and reduce the temperature.

[0033] An electric push rod 17 is installed on the top of the first housing 1. The piston rod of the electric push rod 17 extends through the center of the top of the second housing 2 and into the interior of the second housing 2. A grinding blade 18 is installed at the bottom of the piston rod of the electric push rod 17. The grinding blade 18 is installed at the bottom of the piston rod of the electric push rod 17. The extension and retraction of the piston rod controls the up and down movement of the grinding blade 18 to achieve the grinding action of the lens. A movable seat 19 is installed at the bottom of the second housing 2. A groove 20 is opened on the surface of the movable seat 19. A first electric slide 21 is installed inside the groove 20. The surface of the first electric slide 21 is installed in the groove 20 on the surface of the movable seat 19. The surface of the slide is connected to the suction cup 23 through the first connecting block 22. By moving the slide, the suction cup 23 and the adsorbed lens are moved in the horizontal direction to adjust the grinding position of the lens. The movable seat 19 is used to place the lens to be ground. The groove 20 on its surface is equipped with the first electric slide 21 to facilitate the horizontal movement and positioning of the lens.

[0034] A first connecting block 22 is installed on the surface of the slider of the first electric slide 21. The bottom of the first connecting block 22 is connected to the slider of the first electric slide 21. A suction cup 23 is connected to the top of the first connecting block 22. The suction cup 23 is installed on the top of the first connecting block 22 and fixes the lens by adsorption to ensure the stability of the lens during the grinding process and avoid the lens shaking from affecting the grinding accuracy. A sliding groove 24 is opened at the bottom of the moving base 19. A slide rail 25 that matches the sliding groove 24 is installed at the bottom of the second housing 2. A long groove 26 is opened in the middle of the bottom of the moving base 19. A long box 27 corresponding to the long groove 26 is installed at the bottom of the long groove 26. A second electric slide 28 is installed inside the long box 27. The slider is connected to the bottom of the moving base 19. The moving seat 19 is moved further in the horizontal direction to achieve more precise position adjustment to meet different grinding needs. The slider of the second electric slide 28 is connected to the bottom of the moving seat 19. The moving seat 19 slides in the slide groove 24 through the slide rail 25. The slider of the second electric slide 28 is connected to the bottom of the moving seat 19. The motor drives the slider to move, thereby driving the moving seat 19 to move.

[0035] The first housing 1 houses a controller 29 and a plate pressure sensor 30. The controller 29 is the core of the entire device's control system, receiving signals from the plate pressure sensor 30, temperature sensor 34, etc., and intelligently controlling the vacuum pump 4, electric push rod 17, first electric slide 21, second electric slide 28, etc., according to a preset program and algorithm, ensuring stable and efficient operation of the equipment. The plate pressure sensor 30, installed inside the first housing 1, monitors the air pressure changes inside the second housing 2 in real time and transmits the pressure signal to the controller 29, allowing the controller 29 to adjust the working state of the exhaust assembly according to the air pressure. A temperature sensor 34 is installed on the surface of the grinding blade 18. The controller 29 is electrically connected to both the plate pressure sensor 30 and the temperature sensor 34. The temperature sensor 34, installed on the surface of the grinding blade 18, monitors the temperature of the grinding blade 18 in real time. The temperature signal is fed back to the controller 29, which adjusts the amount of liquid nitrogen in the inflation assembly according to the temperature to ensure that the grinding area is within a suitable temperature range. The liquid nitrogen bottle 6 is provided with a protective shell 31, which covers the liquid nitrogen bottle 6 and protects it from damage caused by external collisions and impacts. The protective shell 31 is provided with a protective door 32, which is located on the surface of the protective shell 31 to facilitate maintenance and inspection of the liquid nitrogen bottle 6, and enhances the protective effect when closed. The second shell 2 is provided with a box door 33, which is located on the surface of the second shell 2 to facilitate the operation of the operator to enter and exit the second shell 2 for lens placement, equipment maintenance and other operations. The box door 33 is provided with a handle 35, which is installed on the surface of the box door 33 to facilitate the operator to open and close the box door 33.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precision grinding machine for optical lens surface processing, comprising a first housing (1) and a second housing (2), characterized in that: The first housing (1) is located on top of the second housing (2), the top of the second housing (2) is connected to the bottom of the first housing (1), and the top half of the second housing (2) is hollow; An exhaust assembly for extracting air from the interior of the first housing (1) to reduce the air pressure is installed inside the second housing (2). One end of the exhaust assembly extends to the outside of the first housing (1), and the other end extends to the inside of the second housing (2). An inflation assembly for filling the interior of the second housing (2) with liquid nitrogen is installed on the outside of the second housing (2). One end of the inflation assembly passes through the outside of the first housing (1) and extends to the top hollow of the second housing (2). The exterior of the second housing (2) is equipped with a dust-collecting assembly for absorbing the generated dust, one end of which extends into the interior of the second housing (2); The second housing (2) is equipped with a cooling component for cooling down the heat generated during grinding.

2. The optical lens surface finishing grinding machine according to claim 1, characterized in that: The exhaust assembly includes a first exhaust pipe (3), a vacuum pump (4) and a first intake pipe (5). The vacuum pump (4) is located inside the first housing (1). One end of the first intake pipe (5) is connected to the intake end of the vacuum pump (4). The other end of the first intake pipe (5) extends into the interior of the second housing (2) and is connected to the second housing (2). One end of the first exhaust pipe (3) is connected to the exhaust end of the vacuum pump (4). The end of the first exhaust pipe (3) away from the exhaust end of the vacuum pump (4) extends to the outside of the first housing (1).

3. The optical lens surface finishing grinding machine according to claim 1, characterized in that: The gas filling assembly includes a liquid nitrogen cylinder (6) and a first gas filling pipe (7). The liquid nitrogen cylinder (6) is located outside the second housing (2). The exhaust end of the liquid nitrogen cylinder (6) is connected to one end of the first gas filling pipe (7). The end of the first gas filling pipe (7) away from the liquid nitrogen cylinder (6) passes through the outside of the first housing (1) and extends into the inside of the second housing (2) and is connected to the hollow part of the second housing (2). A first valve (8) and a nitrogen leak detector (9) are provided on the surface of the first gas filling pipe (7).

4. The optical lens surface finishing grinding machine according to claim 3, characterized in that: The vacuuming assembly includes a vacuum cleaner (10), a fixing plate (11), and a suction pipe (12). The vacuum cleaner (10) is installed on the outside of the second housing (2) via the fixing plate (11). A square groove (13) is provided on the inner rear side of the first housing (1). A plurality of round holes (14) are provided on one side of the square groove (13) inside the second housing (2). The round holes (14) are located on the inner wall of the second housing (2). One end of the suction pipe (12) is connected to the vacuum port of the vacuum cleaner (10). The end of the suction pipe (12) away from the vacuum port of the vacuum cleaner (10) is connected to the square groove (13). A second valve (36) is installed on the surface of the suction pipe (12).

5. The optical lens surface finishing grinding machine according to claim 1, characterized in that: The cooling assembly includes a hollow plate (15) and a jet nozzle (16). The hollow plate (15) is installed on the top of the second housing (2) and communicates with the hollow part of the top of the second housing (2). The jet nozzle (16) is installed on the surface of the hollow plate (15) and one end of the jet nozzle (16) is communicated with the hollow plate (15).

6. The optical lens surface finishing grinding machine according to claim 5, characterized in that: An electric push rod (17) is installed on the top of the first housing (1). The piston rod of the electric push rod (17) extends through the center of the top of the second housing (2) and into the interior of the second housing (2). A grinding blade (18) is installed at the bottom of the piston rod of the electric push rod (17). A movable seat (19) is installed at the bottom of the second housing (2). A groove (20) is opened on the surface of the movable seat (19). A first electric slide (21) is installed inside the groove (20).

7. The optical lens surface finishing grinding machine according to claim 6, characterized in that: A first connecting block (22) is installed on the surface of the slider of the first electric slide (21). The bottom of the first connecting block (22) is connected to the slider of the first electric slide (21). A suction cup (23) is connected to the top of the first connecting block (22). A slide groove (24) is opened at the bottom of the movable seat (19). A slide rail (25) that matches the slide groove (24) is installed at the bottom of the second housing (2). A long groove (26) is opened in the middle of the bottom of the movable seat (19). A long box (27) corresponding to the long groove (26) is installed at the bottom of the long groove (26). A second electric slide (28) is installed inside the long box (27). The slider of the second electric slide (28) is connected to the bottom of the movable seat (19).

8. The optical lens surface finishing grinding machine according to claim 3, characterized in that: The liquid nitrogen bottle (6) is provided with a protective shell (31) on the outside, and a protective door (32) is provided on the surface of the protective shell (31).

9. The optical lens surface finishing grinding machine according to claim 7, characterized in that: The first housing (1) is equipped with a controller (29) and a plate pressure sensor (30). The surface of the grinding blade (18) is equipped with a temperature sensor (34). The controller (29) is electrically connected to the plate pressure sensor (30) and the temperature sensor (34) respectively. The surface of the second housing (2) is provided with a door (33) and a handle (35) is provided on the surface of the door (33).

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