Optical lens accurate grinding on-line thickness measuring device

Abstract

The utility model relates to the technical field of optical lens polishing, in particular to an optical lens accurate polishing online thickness measuring device which comprises a polishing box, a polishing mechanism is arranged at the bottom in the polishing box, and a suction cup used for being fixed to an optical lens is arranged at the upper end in the polishing box. A mounting seat is arranged at the top of the polishing box, a supporting seat is fixed to the top of the mounting seat, the supporting seat and the mounting seat are hollow shells, a connecting pipe is arranged in the middle of the interior of the mounting seat, the bottom of the connecting pipe penetrates into the polishing box and is connected with a suction cup, and an inner cavity of the connecting pipe corresponds to a hole of the suction cup. When the online thickness measuring device is used, the distance between the position of the probe and the grinding disc is detected through the displacement sensor, so that the thickness of the optical lens can be measured in the grinding process, and the grinding process can be timely terminated when the optical lens is ground to a preset specification; and the polishing precision of the optical lens is ensured.

Description

[0001] technical field.

[0002] The utility model relates to the technical field of optical lens grinding, in particular to an online thickness measuring device for fine grinding of optical lenses.

[0003] Background technology.

[0004] Optical lenses are transparent materials made from optical materials such as glass or resin. They are commonly used in eyeglasses to correct vision and provide a clear field of view. Optical lenses can be described by their optical, chemical, thermal, and mechanical properties. Optical properties include refractive index, transmittance, and dispersion coefficient, which are important parameters when designing lenses.

[0005] During the production of optical lenses, the rough optical lenses need to be polished. During the polishing process, the polishing accuracy is only controlled by the travel distance of the polishing disc, which may lead to errors in the polishing of the optical lenses. The thickness of the lenses needs to be measured during polishing. If they fail to meet the requirements, they need to be sent back to the polishing device for secondary polishing. Such operations bring a lot of inconvenience to the polishing of the entire optical lens and also delay the processing progress of optical lenses in mass production. To this end, we proposed an online thickness measurement device for fine polishing of optical lenses to solve the above problems.

[0006] Utility model content.

[0007] The purpose of the utility model is to solve the above-mentioned shortcomings in the prior art and to propose an online thickness measuring device for fine grinding of optical lenses.

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: an online thickness measuring device for fine grinding of optical lenses is designed, comprising a grinding box, a grinding mechanism is provided at the bottom of the grinding box, and a suction cup for fixing to the optical lens is provided at the upper end of the grinding box;

[0009] A mounting base is provided on the top of the polishing box, a support base is fixed on the top of the mounting base, and both the support base and the mounting base are hollow shells, and a connecting pipe is provided in the middle of the mounting base, the bottom of the connecting pipe passes through the polishing box and is connected to the suction cup, and the inner cavity of the connecting pipe corresponds to the hole of the suction cup, and a vacuum pump is installed on one side of the mounting base, and the vacuum pump is connected to the connecting pipe through a conduit;

[0010] The top of the connecting tube slides through the support seat and is connected to a pushing mechanism, which is fixed on the support seat. A displacement sensor is installed on the top of the pushing mechanism. The displacement sensor is connected to a probe through a transmission line. The probe is fixed to the bottom of the connecting tube through a bracket, and the transmission line is set in the connecting tube.

[0011] Preferably, a control cabinet is provided on one side of the polishing box, a support frame is installed at the bottom of the control cabinet, a controller is provided in the control cabinet, and the controller is connected to the vacuum pump, the displacement sensor, and the driving mechanism through wires.

[0012] Preferably, a display is installed on a side of the control cabinet, the display is a touch display, and the display is connected to the controller via a wire.

[0013] Preferably, the displacement sensor is a color laser coaxial displacement meter with an accuracy within μm.

[0014] Preferably, the grinding mechanism includes a grinding disc, the bottom of the grinding disc is rotatably mounted on a support tube, and the bottom of the support tube is fixed to the bottom of the grinding box, a transmission shaft is provided in the support tube, the top of the transmission shaft is fixed to the grinding disc, and the bottom of the transmission shaft passes through the bottom of the grinding box and is connected to a first gear, and the transmission shaft is rotatably connected to the grinding box, a second gear is engaged with the side of the first gear, a drive shaft is coaxially mounted on the second gear, a drive motor is installed at the bottom of the drive shaft, the drive motor is arranged in a chassis through a bracket, the chassis is fixed to the bottom of the grinding box, and the drive motor is connected to the controller through a wire.

[0015] Preferably, a support plate is installed along the bottom edge of the chassis.

[0016] Preferably, an inlet and outlet are provided on one side of the polishing box, and an opening and closing door is detachably mounted on the inlet and outlet, and the opening and closing door is a transparent glass door.

[0017] The design scheme proposed by the utility model has the beneficial effect in the application process that the online thickness measuring device for fine grinding of optical lenses detects the distance between the probe position and the grinding disk through a displacement sensor, thereby measuring the thickness of the optical lens during grinding, thereby measuring the thickness of the optical lens during the grinding process, and timely terminating the grinding process when it is polished to the preset specifications, thereby ensuring the accuracy of the optical lens grinding.

[0018] Description of the accompanying drawings.

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the grinding box of the utility model Figure 1 ;

[0021] Figure 3 This is a schematic diagram of the internal structure of the grinding box of the utility model Figure 2 ;

[0022] Figure 4 It is a sectional front view of the present utility model.

[0023] In the figure: 1. Grinding box; 2. Grinding disc; 3. Support tube; 4. Transmission shaft; 5. First gear; 6. Second gear; 7. Drive shaft; 8. Drive motor; 9. Chassis; 10. Support plate; 11. Suction cup; 12. Connecting pipe; 13. Mounting base; 14. Support base; 15. Displacement sensor; 16. Wire; 17. Probe; 18. Vacuum pump; 19. Conduit; 20. Inlet and outlet; 21. Opening and closing door; 22. Control cabinet; 23. Support frame; 24. Display; 25. Pushing mechanism.

[0024] Specific implementation method.

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] Reference Figure 1-Figure 4 , an optical lens fine grinding and online thickness measuring device, comprising a grinding box 1, a grinding mechanism is provided at the bottom of the grinding box 1, wherein, as Figure 2 and Figure 4 As shown, the grinding mechanism includes a grinding disc 2, the bottom of the grinding disc 2 is rotatably mounted on the support tube 3, and the bottom of the support tube 3 is fixed to the bottom of the grinding box 1, and a transmission shaft 4 is arranged in the support tube 3, the top of the transmission shaft 4 is fixed to the grinding disc 2, and the bottom of the transmission shaft 4 passes through the bottom of the grinding box 1 and is connected to a first gear 5, and the transmission shaft 4 is rotatably connected to the grinding box 1, and a second gear 6 is engaged with the side of the first gear 5, and a driving shaft 7 is coaxially mounted on the second gear 6, and a driving motor 8 is installed at the bottom of the driving shaft 7, and the driving motor 8 is arranged in a chassis 9 through a bracket, and the chassis 9 is fixed to the bottom of the grinding box 1. Under the transmission of the gear, the operation of the driving motor 8 provides power for the rotation of the grinding disc 2.

[0027] It should be noted that a support plate 10 is installed along the bottom edge of the chassis 9 to support the entire polishing box 1 .

[0028] A suction cup 11 for fixing the optical lens is provided at the upper end of the polishing box 1, a mounting seat 13 is provided on the top of the polishing box 1, a support seat 14 is fixed on the top of the mounting seat 13, and the support seat 14 and the mounting seat 13 are both hollow shells, and a connecting pipe 12 is provided in the middle of the mounting seat 13, the bottom of the connecting pipe 12 passes through the polishing box 1 and is connected to the suction cup 11, and the inner cavity of the connecting pipe 12 corresponds to the hole of the suction cup 11, and a vacuum pump 18 is installed on one side of the mounting seat 13 The vacuum pump 18 is connected to the connecting pipe 12 through a conduit 19. When in use, an inlet and outlet 20 is provided on one side of the polishing box 1. A removable opening and closing door 21 is installed on the inlet and outlet 20. The opening and closing door 21 is a transparent glass door. The opening and closing door 21 can be opened, and the optical lens to be polished is taken and placed under the suction cup 11. Then, the vacuum pump 18 is started to adsorb the optical lens on the suction cup 11. Then, the opening and closing door 21 is closed. The operator can observe the internal situation of the polishing box 1 through the opening and closing door 21.

[0029] Subsequently, the top of the connecting tube 12 slides through the support seat 14 and is connected to a pushing mechanism 25, which is fixed on the support seat 14. A displacement sensor 15 is installed on the top of the pushing mechanism 25, and the displacement sensor 15 is connected to a probe 17 through a transmission line 16. The probe 17 is fixed to the bottom of the connecting tube 12 through a bracket, and the transmission line 16 is set in the connecting tube 12. In actual use, the pushing mechanism 25 is one of an electric push rod, an air cylinder, and a hydraulic cylinder. The pushing mechanism 25 will push the suction cup 11 with the optical lens adsorbed toward the grinding disk 2 until the optical lens falls on the grinding disk 2. Then, the grinding disk 2 rotates to start grinding the optical lens.

[0030] Specifically, in actual use, the displacement sensor 15 is a color laser coaxial displacement meter with an accuracy within 3μm. As the grinding progresses, the probe 17 will emit a laser through the through hole on the suction cup 11 and the optical lens and shoot it onto the grinding disc 2. After receiving the reflected laser, the distance between the probe 17 and the grinding disc 2 is measured. In this way, the thickness of the optical lens that has been ground off can be obtained as the grinding progresses, and the current thickness of the optical lens can be converted based on the initial thickness of the optical lens, thereby accurately controlling the thickness of the optical lens during the grinding process to ensure the accuracy of the optical lens grinding.

[0031] It should be noted that a control cabinet 22 is provided on one side of the polishing box 1, and a support frame 23 is installed at the bottom of the control cabinet 22. A controller is provided in the control cabinet 22, and the controller is connected to the vacuum pump 18, the displacement sensor 15, the drive motor 8, and the pushing mechanism 25 through wires. In actual use, the controller is a PLC logic controller, and the detected data is transmitted to the controller through the displacement sensor 15, which can accurately measure the thickness of the optical lens during the polishing process; a display 24 is installed on the side of the control cabinet 22, and the display 24 is a touch display, and the display 24 is connected to the controller through wires, and the data obtained by the controller can be displayed on the display 24 for display, and the touch display 24 also facilitates the operator to control the polishing process.

[0032] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An online thickness measuring device for fine grinding of optical lenses, characterized by: It comprises a polishing box (1), a polishing mechanism is provided at the bottom of the polishing box (1), and a suction cup (11) for fixing to an optical lens is provided at the upper end of the polishing box (1); A mounting seat (13) is provided on the top of the polishing box (1), a support seat (14) is fixed on the top of the mounting seat (13), and the support seat (14) and the mounting seat (13) are both hollow shells, and a connecting pipe (12) is provided in the middle of the mounting seat (13), the bottom of the connecting pipe (12) passes through the polishing box (1) and is connected to the suction cup (11), and the inner cavity of the connecting pipe (12) corresponds to the hole of the suction cup (11), and a vacuum pump (18) is installed on one side of the mounting seat (13), and the vacuum pump (18) is communicated with the connecting pipe (12) through a conduit (19); The top of the connecting tube (12) slides through the support seat (14) and is connected to a pushing mechanism (25). The pushing mechanism (25) is fixed on the support seat (14). A displacement sensor (15) is installed on the top of the pushing mechanism (25). The displacement sensor (15) is connected to a probe (17) through a transmission line (16). The probe (17) is fixed to the bottom of the connecting tube (12) through a bracket, and the transmission line (16) is set in the connecting tube (12).

2. The on-line thickness measuring device for fine grinding of optical lenses according to claim 1, characterized in that: A control cabinet (22) is provided on one side of the polishing box (1), a support frame (23) is installed at the bottom of the control cabinet (22), and a controller is provided in the control cabinet (22). The controller is connected to the vacuum pump (18), the displacement sensor (15), and the pushing mechanism (25) through wires.

3. The on-line thickness measuring device for fine grinding of optical lenses according to claim 2, characterized in that: A display (24) is installed on the side of the control cabinet (22), the display (24) is a touch display, and the display (24) is connected to the controller through a wire.

4. The on-line thickness measuring device for fine grinding of optical lenses according to claim 2, characterized in that: The displacement sensor (15) is a color laser coaxial displacement meter with an accuracy within 3 μm.

5. The on-line thickness measuring device for fine grinding of optical lenses according to claim 2, characterized in that: The grinding mechanism comprises a grinding disc (2), the bottom of the grinding disc (2) is rotatably mounted on a support tube (3), and the bottom of the support tube (3) is fixed to the bottom of the grinding box (1), a transmission shaft (4) is arranged in the support tube (3), the top of the transmission shaft (4) is fixed to the grinding disc (2), and the bottom of the transmission shaft (4) passes through the bottom of the grinding box (1) and is connected to a first gear (5), and the transmission shaft (4) is rotatably connected to the grinding box (1), a second gear (6) is meshed on the side of the first gear (5), a driving shaft (7) is coaxially mounted on the second gear (6), a driving motor (8) is mounted on the bottom of the driving shaft (7), the driving motor (8) is arranged in a chassis (9) through a bracket, the chassis (9) is fixed to the bottom of the grinding box (1), and the driving motor (8) is connected to a controller through a wire.

6. The on-line thickness measuring device for fine grinding of optical lenses according to claim 5, characterized in that: A support plate (10) is mounted along the bottom edge of the chassis (9).

7. The on-line thickness measuring device for fine grinding of optical lenses according to claim 1, characterized in that: An inlet and outlet (20) is provided on one side of the polishing box (1), and an opening and closing door (21) is detachably mounted on the inlet and outlet (20), and the opening and closing door (21) is a transparent glass door.

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