Aspheric lens polishing equipment

Abstract

The invention relates to the technical field of lens polishing, in particular to aspherical lens polishing equipment which comprises a fixing cover, a mounting frame used for mounting a polishing disc is arranged on the lower portion of an inner cavity of the fixing cover, and the lower end of the mounting frame fixes the polishing disc through a fixing assembly; an extrusion mechanism is arranged on the upper portion of an inner cavity of the fixing cover, extrudes the mounting frame and provides pressure for the polishing disc, the extrusion mechanism comprises a moving plate, and a compression spring is fixedly arranged at the lower end of the moving plate; a threaded rod used for adjusting the position of the movable plate penetrates through the middle of the movable plate, is in threaded connection with the movable plate, penetrates through the fixed cover and is rotationally connected with the fixed cover. The pressure sensor and the data processing module are matched with the control module, the pressure of the compression spring on the extrusion plate can be adjusted after the polishing disc is abraded, and therefore the pressure of the polishing disc on the surface polishing point of the aspheric lens is adjusted, and the problems that the polishing efficiency is low due to insufficient pressure, and the polished surface does not meet the standard are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of lens polishing, and in particular discloses a non-spherical lens polishing device. Background Art

[0002] Aspheric lens polishing is a complex technology used to polish lenses with aspherical shapes. The lenses are usually polished using polishing disks made of materials such as asphalt, resin or ceramic.

[0003] During the polishing process, it is necessary to ensure that the pressure of the polishing disk on the lens surface is maintained within the allowable error range to avoid over-polishing or uneven polishing. Stable pressure can also improve the efficiency of the polishing process. However, during the use of traditional aspheric lens polishing equipment, the pressure on the lens is difficult to control and cannot be evenly stabilized within the specified pressure range, which can easily cause damage to the lens surface and affect the efficiency of polishing. Summary of the invention

[0004] In view of the above deficiencies in the prior art, the present invention provides an aspheric lens polishing device to solve the problem that the pressure on the lens of the traditional aspheric lens polishing device is difficult to control during use and cannot be evenly stabilized within a specified pressure range, which easily causes damage to the lens surface and affects the efficiency of polishing.

[0005] The technical solution adopted by the present invention to solve its technical problem is: The aspheric lens polishing device comprises a fixed cover, a polishing disc is installed at the bottom of the inner cavity of the fixed cover, a mounting frame for mounting the polishing disc is installed at the lower part of the inner cavity of the fixed cover, and the lower end of the mounting frame fixes the polishing disc through a fixing assembly; The upper part of the inner cavity of the fixed cover is provided with a squeezing mechanism, which squeezes the mounting frame and provides pressure for the polishing disc, and the squeezing mechanism includes a moving plate, a compression spring is fixedly provided at the lower end of the moving plate, and the outer wall of the moving plate is slidably connected with the sliding groove on the upper part of the inner wall of the fixed cover through a sliding block; A threaded rod is provided through the middle of the movable plate, the threaded rod is threadedly connected to the movable plate, the threaded rod is used to adjust the position of the movable plate, and the top end of the threaded rod passes through the fixed cover and is rotatably connected to the fixed cover.

[0006] Furthermore, the outer wall of the mounting frame is slidably connected to the sliding groove at the lower part of the inner wall of the fixed cover through a slider, a pressure sensor is embedded in the upper end of the mounting frame, and an extrusion plate is also provided at the upper end of the mounting frame, and the lower end of the extrusion plate is in extrusion contact with the pressure sensor.

[0007] Furthermore, the upper end of the compression spring is fixedly connected to the lower end of the movable plate, and the lower end of the compression spring is fixedly connected to the upper end of the extrusion plate.

[0008] Furthermore, two guide grooves are symmetrically provided at the lower end of the mounting frame, the fixing assembly comprises a guide block slidably arranged in the guide groove, and a clamping rod is fixedly provided at the lower end of the guide block, and two reserved holes are provided on the outer wall of the polishing plate to cooperate with the two clamping rods.

[0009] Furthermore, a bidirectional screw rod is rotatably provided at the lower part of the inner cavity of the mounting frame, the bidirectional screw rod passes through two guide grooves, and two sides of the bidirectional screw rod are respectively threadedly connected to two guide blocks.

[0010] Furthermore, a second drive motor for driving the bidirectional screw to rotate is fixedly arranged at one end of the bidirectional screw, and the second drive motor is embedded in the mounting frame.

[0011] Furthermore, a first driving motor is fixedly provided on the upper end of the threaded rod, and the first driving motor is used to drive the threaded rod to rotate.

[0012] Furthermore, a data processing module is provided on the outer surface of the fixed cover, and the pressure sensor transmits the detected pressure data to the data processing module, and the data processing module compares and processes the data transmitted by the pressure sensor. A control module is also provided on the outer surface of the fixed cover, and the data processing module sends a signal to the control module according to the comparison value, and the control module controls the operation of the first drive motor.

[0013] Furthermore, an electronic ruler is fixedly provided at the upper end of the inner cavity of the fixed cover, and an extended end of the electronic ruler is fixedly connected to an upper end of the movable plate, and the movable plate moves to pull the extended end of the electronic ruler to move.

[0014] Furthermore, the electronic ruler transmits the measurement data to the data processing module, the data processing module records the data of the electronic ruler, and compares the real-time data of the electronic ruler with the height value of the allowable wear of the polishing disc. The control module is used to control the operation of the first drive motor and the second drive motor. An alarm module is also provided on the outer surface of the fixed cover, and the control module is used to control the operation of the alarm module.

[0015] The beneficial effects of the present invention are: 1. The present invention sets a pressure sensor and a data processing module in cooperation with a control module, which can adjust the pressure of the compression spring on the extrusion plate after the polishing disc is worn, thereby adjusting the pressure of the polishing disc on the polishing point on the surface of the aspheric lens, avoiding low polishing efficiency due to insufficient pressure and causing the polished surface to fail to meet the standards.

[0016] 2. The present invention can calculate the weight of the polishing disc loss by arranging an electronic ruler in cooperation with a data processing module after the polishing disc is worn, thereby compressing the spring to supplement the pressure on the polishing point on the surface of the aspheric lens, making the pressure more balanced during the polishing process.

[0017] 3. The present invention can automatically alarm when the polishing disc is excessively worn by setting an alarm module, reminding the staff to replace the polishing disc with a new one in time, thereby ensuring the polishing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a partial structural cross-sectional schematic diagram of the present invention; Figure 3 for Figure 2 A schematic diagram of the structure enlargement at the center A; Figure 4 It is a schematic cross-sectional view of a part of the structure of the mounting frame, the pressure sensor, the extrusion plate and the guide groove of the present invention; Figure 5 It is a partial structural cross-sectional schematic diagram of the mounting frame, guide groove and fixing assembly of the present invention; Figure 6 It is a partial framework schematic diagram of the pressure sensor, electronic ruler, data processing module, control module and first drive motor of the present invention; Figure 7 It is a partial framework schematic diagram of the electronic ruler, data processing module, control module, second drive motor and alarm module of the present invention; Figure 8 It is a partial flow diagram of the electronic ruler, pressure sensor, data processing module and control module of the present invention; Fig. 9 It is a partial flow chart of the electronic ruler, data processing module, control module and alarm module of the present invention.

[0019] In the figure: 1, fixed cover; 101, polishing plate; 102, mounting frame; 103, pressure sensor; 104, extrusion plate; 105, guide groove; 106, data processing module; 107, control module; 108, electronic ruler; 109, alarm module; 2. Fixed assembly; 201. Guide block; 202. Clamping rod; 203. Bidirectional screw rod; 204. Second drive motor; 301, moving plate; 302, compression spring; 303, threaded rod; 304, first driving motor. DETAILED DESCRIPTION

[0020] The present invention will be described and illustrated in detail below in conjunction with the accompanying drawings.

[0021] Example 1 like Figure 1-9As shown, the aspheric lens polishing device comprises a fixed cover 1, a polishing disc 101 is provided at the bottom of the inner cavity of the fixed cover 1, a mounting frame 102 for mounting the polishing disc 101 is provided at the lower part of the inner cavity of the fixed cover 1, and the lower end of the mounting frame 102 fixes the polishing disc 101 through a fixing component 2; The upper part of the inner cavity of the fixed cover 1 is provided with a squeezing mechanism, which squeezes the mounting frame 102 and provides pressure for the polishing disc 101. The squeezing mechanism includes a moving plate 301, a compression spring 302 is fixedly provided at the lower end of the moving plate 301, and the outer wall of the moving plate 301 is slidably connected with the sliding groove on the upper part of the inner wall of the fixed cover 1 through a slider; A threaded rod 303 is provided through the middle of the movable plate 301 , and the threaded rod 303 is threadedly connected to the movable plate 301 . The threaded rod 303 is used to adjust the position of the movable plate 301 , and the top end of the threaded rod 303 passes through the fixed cover 1 and is rotatably connected to the fixed cover 1 .

[0022] A first driving motor 304 is fixedly disposed on the upper end of the threaded rod 303 , and the first driving motor 304 is used to drive the threaded rod 303 to rotate.

[0023] The upper end of the compression spring 302 is fixedly connected to the lower end of the moving plate 301 , and the lower end of the compression spring 302 is fixedly connected to the upper end of the extrusion plate 104 .

[0024] By adopting the above technical solution, the first driving motor 304 can drive the threaded rod 303 to rotate. When the threaded rod 303 rotates, since the threaded rod 303 is threadedly connected to the movable plate 301 and the movable plate 301 is slidably connected to the slide groove through the slider, the slide groove can limit the movement direction of the slider. Therefore, the threaded rod 303 can drive the movable plate 301 to move when it rotates. When the movable plate 301 moves downward, it can squeeze the compression spring 302, so that the compression spring 302 squeezes the upper end of the squeezing plate 104, so that the squeezing plate 104 is subjected to pressure. At this time, the squeezing plate 104 can squeeze the mounting frame 102, so that under the action of the fixing component 2, the lower end of the polishing disk 101 is kept at the polishing point on the surface of the aspheric lens Appropriate extrusion force, and as the polishing disc 101 wears, the polishing disc 101 moves downward under the action of the compression spring 302, the extrusion plate 104 and the mounting frame 102. Since the position of the movable plate 301 has not changed, the extrusion force of the compression spring 302 on the extrusion plate 104 will decrease. At this time, the movable plate 301 is moved downward by rotating the threaded rod 303. Since the polishing disc 101 is blocked by the surface of the aspheric lens, the polishing disc 101, the mounting frame 102 and the extrusion plate 104 will also be subject to resistance. At this time, the compression spring 302 will shrink under the action of the extrusion force, thereby increasing the extrusion force on the extrusion plate 104, thereby maintaining the pressure of the polishing disc 101 on the polishing point on the aspheric lens surface.

[0025] The outer wall of the mounting frame 102 is slidably connected to the sliding groove at the lower part of the inner wall of the fixed cover 1 through a slider, a pressure sensor 103 is embedded in the upper end of the mounting frame 102, and an extrusion plate 104 is also provided at the upper end of the mounting frame 102, and the lower end of the extrusion plate 104 is in extrusion contact with the pressure sensor 103.

[0026] By adopting the above technical solution, the pressure sensor 103 can detect the pressure between the extrusion plate 104 and the mounting frame 102, thereby detecting the pressure exerted by the compression spring 302 on the extrusion plate 104, and at the same time can determine the pressure between the polishing disk 101 and the polishing point on the surface of the aspheric lens.

[0027] The mounting frame 102 has two guide grooves 105 symmetrically formed at its lower end. The fixing assembly 2 includes a guide block 201 slidably disposed in the guide groove 105 , and a clamping rod 202 is fixedly disposed at the lower end of the guide block 201 . Two reserved holes are formed on the outer wall of the polishing disc 101 to match the two clamping rods 202 .

[0028] By adopting the above technical solution, the clamping rod 202 is an L-shaped structure or other structure as a whole. The clamping rod 202 can be inserted into the reserved hole on the polishing disc 101, and the polishing disc 101 is fixed under the mounting frame 102 under the action of the two clamping rods 202, wherein the guide block 201 can slide along the direction of the guide groove 105, and when the guide block 201 moves, it can drive the clamping rod 202 at its lower end to move.

[0029] A bidirectional screw rod 203 is rotatably disposed at the lower portion of the inner cavity of the mounting frame 102 . The bidirectional screw rod 203 passes through the two guide grooves 105 , and two sides of the bidirectional screw rod 203 are respectively threadedly connected to the two guide blocks 201 .

[0030] A second drive motor 204 for driving the bidirectional screw rod 203 to rotate is fixedly disposed at one end of the bidirectional screw rod 203 . The second drive motor 204 is embedded in the mounting frame 102 .

[0031] By adopting the above technical solution, the second drive motor 204 can drive the bidirectional screw 203 to rotate during operation. Since the threads at both ends of the bidirectional screw 203 are opposite, the two guide blocks 201 can move relative to each other when the bidirectional screw 203 rotates.

[0032] A data processing module 106 is provided on the outer surface of the fixed cover 1. The pressure sensor 103 transmits the detected pressure data to the data processing module 106. The data processing module 106 compares and processes the data transmitted by the pressure sensor 103. A control module 107 is also provided on the outer surface of the fixed cover 1. The data processing module 106 sends a signal to the control module 107 according to the comparison value. The control module 107 controls the first drive motor 304 to work.

[0033] An electronic ruler 108 is fixedly arranged at the upper end of the inner cavity of the fixed cover 1 , and an extended end of the electronic ruler 108 is fixedly connected to the upper end of the moving plate 301 , and the moving plate 301 moves to pull the extended end of the electronic ruler 108 to move.

[0034] The electronic ruler 108 transmits the measured data to the data processing module 106, and the data processing module 106 records the data of the electronic ruler 108, and compares the real-time data of the electronic ruler 108 with the height value of the allowable wear of the polishing disc 101. The control module 107 is used to control the first drive motor 304 and the second drive motor 204 to work. The outer surface of the fixed cover 1 is also provided with an alarm module 109, and the control module 107 is used to control the alarm module 109 to work. Among them, the alarm module 109 can be replaced by a speaker or an alarm.

[0035] By adopting the above technical solution, when the value of the electronic ruler 108 is less than the height value of the allowable wear of the polishing disc 101, the data processing module 106 will not send a signal to the control module 107 to control the second drive motor 204 to work. When the value of the electronic ruler 108 reaches the height value of the allowable wear of the polishing disc 101, the data processing module 106 will send a signal to the control module 107, and the control module 107 will control the second drive motor 204 to work, thereby driving the bidirectional screw rod 203 to rotate, so that the worn polishing disc 101 is removed and replaced, and at the same time, the control module 107 sends a signal to the alarm module 109, and the alarm module 109 will alarm to remind the staff to replace the polishing disc 101 in time. The data processing module 106 calculates the pressure that the compression spring 302 needs to apply to the pressure sensor 103 after the polishing plate 101 is worn by the following formula: X=X1+G1-L×S×M; Wherein, X is the pressure that the compression spring 302 needs to apply to the pressure sensor 103 after the polishing disc 101 is worn, X1 is the initial pressure that needs to be applied to the pressure sensor 103 when the polishing disc 101 is not worn, G1 is the self-weight of the polishing disc 101 when it is not worn, L is the change amount of the electronic ruler 108, S is the bottom area of ​​the polishing disc 101, and M is the density of the polishing disc 101 of the corresponding material. When working with polishing discs 101 of different materials, the initial pressure value received by the pressure sensor 103 can be reasonably controlled according to the use conditions, so that the device can be applicable to polishing discs 101 of different materials; During the polishing process, when the value of the pressure sensor 103 reaches the pressure that should be applied to the pressure sensor 103 calculated by the data processing module 106, that is, when the value of the pressure sensor 103 reaches X, the data processing module 106 sends a signal to the control module 107 to stop the first drive motor 304. When the value of the pressure sensor 103 drops to X-N, the data processing module 106 will again send a signal to the control module 107 to control the first drive motor 304 to work, where N is the allowable pressure error value during the polishing process.

Claims

1. An aspheric lens polishing device, comprising a fixed cover (1), characterized in that: A polishing disc (101) is provided at the bottom of the inner cavity of the fixed cover (1), a mounting frame (102) for mounting the polishing disc (101) is provided at the lower part of the inner cavity of the fixed cover (1), and the lower end of the mounting frame (102) fixes the polishing disc (101) via a fixing assembly (2); An extrusion mechanism is provided at the upper part of the inner cavity of the fixed cover (1), and the extrusion mechanism extrudes the mounting frame (102) and provides pressure for the polishing disc (101), the extrusion mechanism comprising a movable plate (301), a compression spring (302) being fixedly provided at the lower end of the movable plate (301), and the outer wall of the movable plate (301) is slidably connected to a sliding groove at the upper part of the inner wall of the fixed cover (1) via a sliding block; A threaded rod (303) is provided through the middle of the movable plate (301), the threaded rod (303) is threadedly connected to the movable plate (301), the threaded rod (303) is used to adjust the position of the movable plate (301), and the top end of the threaded rod (303) passes through the fixed cover (1) and is rotatably connected to the fixed cover (1).

2. The aspheric lens polishing device according to claim 1, characterized in that: The outer wall of the mounting frame (102) is slidably connected to a sliding groove at the lower part of the inner wall of the fixed cover (1) via a sliding block, a pressure sensor (103) is embedded at the upper end of the mounting frame (102), and an extrusion plate (104) is also provided at the upper end of the mounting frame (102), and the lower end of the extrusion plate (104) is in extrusion contact with the pressure sensor (103).

3. The aspheric lens polishing device according to claim 2, characterized in that: The upper end of the compression spring (302) is fixedly connected to the lower end of the moving plate (301), and the lower end of the compression spring (302) is fixedly connected to the upper end of the extrusion plate (104).

4. The aspheric lens polishing device according to claim 3, characterized in that: The mounting frame (102) has two guide grooves (105) symmetrically formed at the lower end thereof, the fixing assembly (2) comprising a guide block (201) slidably disposed in the guide groove (105), and a clamping rod (202) is fixedly disposed at the lower end of the guide block (201), and two reserved holes are formed on the outer wall of the polishing disc (101) to match the two clamping rods (202).

5. The aspheric lens polishing device according to claim 4, characterized in that: A bidirectional screw rod (203) is rotatably disposed at the lower part of the inner cavity of the mounting frame (102), the bidirectional screw rod (203) passes through the two guide grooves (105), and two sides of the bidirectional screw rod (203) are respectively threadedly connected to the two guide blocks (201).

6. The aspheric lens polishing device according to claim 5, characterized in that: A second drive motor (204) for driving the bidirectional screw rod (203) to rotate is fixedly disposed at one end of the bidirectional screw rod (203), and the second drive motor (204) is embedded in the mounting frame (102).

7. The aspheric lens polishing device according to claim 6, characterized in that: A first drive motor (304) is fixedly disposed on the upper end of the threaded rod (303), and the first drive motor (304) is used to drive the threaded rod (303) to rotate.

8. The aspheric lens polishing device according to claim 7, characterized in that: A data processing module (106) is provided on the outer surface of the fixed cover (1); the pressure sensor (103) transmits the detected pressure data to the data processing module (106); the data processing module (106) performs comparison processing on the data transmitted by the pressure sensor (103); a control module (107) is also provided on the outer surface of the fixed cover (1); the data processing module (106) sends a signal to the control module (107) according to the comparison value; the control module (107) controls the first drive motor (304) to operate.

9. The aspheric lens polishing device according to claim 8, characterized in that: An electronic ruler (108) is fixedly arranged at the upper end of the inner cavity of the fixed cover (1), and an extended end of the electronic ruler (108) is fixedly connected to the upper end of the movable plate (301), and the movable plate (301) moves to pull the extended end of the electronic ruler (108) to move.

10. The aspheric lens polishing device according to claim 9, characterized in that: The electronic ruler (108) transmits the measured data to the data processing module (106); the data processing module (106) records the data of the electronic ruler (108) and compares the real-time data of the electronic ruler (108) with the value of the height of allowable wear of the polishing disc (101); the control module (107) is used to control the operation of the first drive motor (304) and the second drive motor (204); an alarm module (109) is also provided on the outer surface of the fixed cover (1); and the control module (107) is used to control the operation of the alarm module (109).

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