Aspherical lens polishing apparatus

Abstract

The application relates to the technical field of lens polishing, and discloses a non-spherical lens polishing device, which comprises a fixing cover, a mounting frame for mounting a polishing disc is arranged at the lower part of the inner cavity of the fixing cover, and the lower end of the mounting frame is fixed to the polishing disc through a fixing assembly; an extrusion mechanism is arranged at the upper part of the inner cavity of the fixing cover, the extrusion mechanism extrudes the mounting frame and provides pressure for the polishing disc, the extrusion mechanism comprises a moving plate, a compression spring is fixed to the lower end of the moving plate; a threaded rod for adjusting the position of the moving plate is arranged to penetrate the moving plate, the threaded rod is in threaded connection with the moving plate, the threaded rod penetrates the fixing cover and is in rotary connection with the fixing cover. Through cooperation of a pressure sensor, a data processing module and a control module, the pressure of the compression spring on the extrusion plate can be adjusted after the polishing disc is worn, so that the pressure of the polishing disc on the polishing point of the surface of the non-spherical lens is adjusted, the low polishing efficiency caused by insufficient pressure is avoided, and the polished surface does not meet the standard.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of lens polishing, and discloses a non-spherical lens polishing device. BACKGROUND

[0002] Non-spherical lens polishing is a complex technology for polishing a lens with a non-spherical shape, and a polishing disc made of pitch, resin or ceramic is usually used to polish the lens.

[0003] In the polishing process, the pressure of the polishing disc on the lens surface needs to be kept within an allowable error range to avoid over-polishing or uneven polishing, and stable pressure can improve the efficiency in the polishing process. However, the pressure on the lens cannot be controlled in the use of the traditional non-spherical lens polishing device, and cannot be uniformly and stably kept within a specified pressure range, which may cause damage to the lens surface and affect the efficiency in the polishing process. SUMMARY

[0004] In view of the problems in the prior art, the application provides a non-spherical lens polishing device to solve the problem that the pressure on the lens cannot be controlled in the use of the traditional non-spherical lens polishing device, and cannot be uniformly and stably kept within a specified pressure range, which may cause damage to the lens surface and affect the efficiency in the polishing process.

[0005] The technical scheme adopted by the application to solve the technical problem is:

[0006] The non-spherical lens polishing device comprises a fixed cover, a polishing disc is arranged at the bottom of the inner cavity of the fixed cover, an installation frame for installing the polishing disc is arranged at the lower part of the inner cavity of the fixed cover, and the installation frame is fixed to the polishing disc through a fixed assembly at the lower end of the installation frame.

[0007] An extrusion mechanism is arranged at the upper part of the inner cavity of the fixed cover, the extrusion mechanism extrudes the installation frame and provides pressure for the polishing disc, the extrusion mechanism comprises a moving plate, a compression spring is fixedly arranged at the lower end of the moving plate, and the outer wall of the moving plate is slidably connected to the sliding groove at the upper part of the inner wall of the fixed cover through a sliding block.

[0008] A threaded rod is arranged to penetrate the middle part of the moving plate, the threaded rod is threadedly connected to the moving plate, the threaded rod is used for adjusting the position of the moving plate, and the top end of the threaded rod penetrates the fixed cover and is rotatably connected to the fixed cover.

[0009] Further, the outer wall of the installation frame is slidably connected to the sliding groove at the lower part of the inner wall of the fixed cover through a sliding block, a pressure sensor is embedded at the upper end of the installation frame, and an extrusion plate is further arranged at the upper end of the installation frame, and the lower end of the extrusion plate is extruded and contacted with the pressure sensor.

[0010] Further, the upper end of the compression spring is fixedly connected with the lower end of the moving plate, and the lower end of the compression spring is fixedly connected with the upper end of the extrusion plate.

[0011] Further, two guide grooves are symmetrically formed in the lower end of the mounting frame, the fixing assembly comprises guide blocks slidingly arranged in the guide grooves, and clamping rods are fixedly arranged at the lower ends of the guide blocks, and two reserved holes are formed in the outer wall of the polishing disc in cooperation with the two clamping rods.

[0012] Further, a bidirectional screw rod is rotatably arranged at the lower portion of the inner cavity of the mounting frame, the bidirectional screw rod penetrates through the two guide grooves, and the two sides of the bidirectional screw rod are threadedly connected with the two guide blocks, respectively.

[0013] Further, a second driving motor for driving the bidirectional screw rod to rotate is fixedly arranged at one end of the bidirectional screw rod, and the second driving motor is embedded in the mounting frame.

[0014] Further, a first driving motor is fixedly arranged at the upper end of the threaded rod, and the first driving motor is used for driving the threaded rod to rotate.

[0015] Further, a data processing module is arranged on the outer surface of the fixing cover, the pressure data detected by the pressure sensor is transmitted to the data processing module, the data processing module compares and processes the data transmitted by the pressure sensor, a control module is further arranged on the outer surface of the fixing cover, the data processing module sends a signal to the control module according to the comparison value, and the control module controls the first driving motor to work.

[0016] Further, an electronic ruler is fixedly arranged at the upper end of the inner cavity of the fixing cover, the extension end of the electronic ruler is fixedly connected with the upper end of the moving plate, and the moving plate moves to pull the extension end of the electronic ruler to move.

[0017] Further, the electronic ruler transmits the measurement data to the data processing module, the data processing module records the data of the electronic ruler, 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 for controlling the first driving motor and the second driving motor to work, and an alarm module is further arranged on the outer surface of the fixing cover, and the control module is used for controlling the alarm module to work.

[0018] The present application has the beneficial effects that:

[0019] 1、The present application can adjust the pressure of the extrusion plate by the compression spring after the polishing disc is worn, so as to adjust the pressure of the polishing disc on the polishing point of the aspheric lens surface, avoid the low polishing efficiency caused by the insufficient pressure, and avoid the polishing surface not meeting the standard.

[0020] 2、The electronic ruler is arranged, the weight of polishing disc loss can be calculated by cooperating with the data processing module after the polishing disc is worn, so that the pressure on the polishing point of the aspheric lens surface is supplemented by the compression spring, and the pressure is more balanced in the polishing process.

[0021] 3、The alarm module is arranged, the polishing disc can be automatically alarmed when the polishing disc is worn too much, the staff is reminded to replace the new polishing disc in time, and the polishing quality is guaranteed. ACCURACY

[0022] Figure 1 It is a structural schematic diagram of the application;

[0023] Figure 2 It is a partial structural section view of the application;

[0024] Figure 3 It is Figure 2 The structure of A in the middle is enlarged and schematically shown;

[0025] Figure 4 It is a partial structural section view of the mounting frame, pressure sensor, extrusion plate and guide groove of the application;

[0026] Figure 5 It is a partial structural section view of the mounting frame, guide groove and fixing assembly of the application;

[0027] Figure 6 It is a partial frame diagram of the pressure sensor, electronic ruler, data processing module, control module and first driving motor of the application;

[0028] Figure 7 It is a partial frame diagram of the electronic ruler, data processing module, control module, second driving motor and alarm module of the application;

[0029] Figure 8 It is a partial flow diagram of the electronic ruler, pressure sensor, data processing module and control module of the application;

[0030] Figure 9 It is a partial flow diagram of the electronic ruler, data processing module, control module and alarm module of the application.

[0031] In the figure: 1, fixed cover; 101, polishing disc; 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;

[0032] 2, fixing assembly; 201, guide block; 202, clamping rod; 203, bidirectional screw; 204, second driving motor;

[0033] 301, moving plate; 302, compression spring; 303, threaded rod; 304, first drive motor. DETAILED DESCRIPTION

[0034] The application will be described in detail and illustrated with reference to the accompanying drawings.

[0035] Example 1

[0036] As Figures 1-9 shown, the aspherical lens polishing device comprises a fixed cover 1, the bottom of the inner cavity of the fixed cover 1 is provided with a polishing disc 101, the lower part of the inner cavity of the fixed cover 1 is provided with a mounting frame 102 for mounting the polishing disc 101, and the lower end of the mounting frame 102 is fixed to the polishing disc 101 through a fixed assembly 2.

[0037] The upper part of the inner cavity of the fixed cover 1 is provided with an extrusion mechanism, the extrusion mechanism extrudes the mounting frame 102 and provides pressure for the polishing disc 101, and the extrusion mechanism comprises a moving plate 301, the lower end of the moving plate 301 is fixedly provided with a compression spring 302, 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 sliding block.

[0038] A threaded rod 303 is penetratingly arranged in the middle of the moving plate 301, the threaded rod 303 is threadedly connected with the moving plate 301, the threaded rod 303 is used for adjusting the position of the moving plate 301, and the top end of the threaded rod 303 penetrates through the fixed cover 1 and is rotationally connected with the fixed cover 1.

[0039] A first drive motor 304 is fixedly arranged on the upper end of the threaded rod 303, and the first drive motor 304 is used for driving the threaded rod 303 to rotate.

[0040] The upper end of the compression spring 302 is fixedly connected with the lower end of the moving plate 301, and the lower end of the compression spring 302 is fixedly connected with the upper end of an extrusion plate 104.

[0041] By adopting the technical scheme, the first driving motor 304 can drive the threaded rod 303 to rotate, when the threaded rod 303 rotates, the threaded rod 303 is in threaded connection with the moving plate 301, and the moving plate 301 is in sliding connection with the sliding block and the sliding groove, the sliding groove can limit the movement direction of the sliding block, therefore, the threaded rod 303 can drive the moving plate 301 to move when rotating, when the moving plate 301 moves downward, the compression spring 302 can be extruded, so that the compression spring 302 extrudes the upper end of the extrusion plate 104, the extrusion plate 104 is subjected to pressure, at this time, the extrusion plate 104 can extrude the mounting frame 102, so that the lower end of the polishing disc 101 and the polishing point of the aspheric lens surface are kept under appropriate extrusion force under the action of the fixing assembly 2, and with the wear of the polishing disc 101, 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 moving plate 301 does not change, the extrusion force of the compression spring 302 on the extrusion plate 104 will decrease, at this time, the threaded rod 303 is rotated to make the moving plate 301 move downward, since the polishing disc 101 is blocked by the aspheric lens surface, therefore, the polishing disc 101, the mounting frame 102 and the extrusion plate 104 will also be subjected to resistance, at this time, the compression spring 302 will contract under the action of the extrusion force, so as to increase the extrusion force on the extrusion plate 104, so as to maintain the pressure of the polishing disc 101 on the polishing point of the aspheric lens surface.

[0042] The outer wall of the mounting frame 102 is in sliding connection with the sliding groove in the lower part of the inner wall of the fixed cover 1 through a sliding block, the upper end of the mounting frame 102 is embedded with a pressure sensor 103, and the upper end of the mounting frame 102 is further provided with an extrusion plate 104, and the lower end of the extrusion plate 104 is in extrusion contact with the pressure sensor 103.

[0043] By adopting the technical scheme, the pressure sensor 103 can detect the pressure between the extrusion plate 104 and the mounting frame 102, so as to detect the pressure generated by the compression spring 302 on the extrusion plate 104, and judge the pressure between the polishing disc 101 and the polishing point of the aspheric lens surface.

[0044] Two guide grooves 105 are symmetrically formed in the lower end of the mounting frame 102, the fixing assembly 2 comprises a guide block 201 slidingly arranged in the guide groove 105, and a clamping rod 202 is fixedly arranged at the lower end of the guide block 201, and two reserved holes are formed in the outer wall of the polishing disc 101 in cooperation with the two clamping rods 202.

[0045] By adopting the above technical scheme, the clamping rods 202 are in L-shaped structure or other structure as a whole, the clamping rods 202 can be inserted into the reserved holes on the polishing disc 101, and the polishing disc 101 is fixed below 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 the guide block 201 can drive the clamping rod 202 at the lower end to move when the guide block 201 moves.

[0046] The lower part of the inner cavity of the mounting frame 102 is rotationally provided with a bidirectional screw rod 203, the bidirectional screw rod 203 penetrates the two guide grooves 105, and the two sides of the bidirectional screw rod 203 are respectively threadedly connected with the two guide blocks 201.

[0047] One end of the bidirectional screw rod 203 is fixedly provided with a second driving motor 204 for driving the bidirectional screw rod 203 to rotate, and the second driving motor 204 is embedded in the mounting frame 102.

[0048] By adopting the above technical scheme, the second driving motor 204 can drive the bidirectional screw rod 203 to rotate when working, and since the threads at the two ends of the bidirectional screw rod 203 are opposite, the two guide blocks 201 can move relatively when the bidirectional screw rod 203 rotates.

[0049] The outer surface of the fixed cover 1 is provided with a data processing module 106, 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, the outer surface of the fixed cover 1 is also provided with a control module 107, the data processing module 106 sends a signal to the control module 107 according to the comparison value, and the control module 107 controls the first driving motor 304 to work.

[0050] The upper end of the inner cavity of the fixed cover 1 is fixedly provided with an electronic ruler 108, the extension end of the electronic ruler 108 is fixedly connected with the upper end of the moving plate 301, and the moving plate 301 moves to pull the extension end of the electronic ruler 108 to move.

[0051] The electronic ruler 108 transmits the measurement 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 height value of the allowable wear of the polishing disc 101, the control module 107 is used for controlling the first driving motor 304 and the second driving 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 for controlling the alarm module 109 to work. Wherein, the alarm module 109 can be replaced by a loudspeaker or an alarm.

[0052] By adopting the technical scheme, 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 does not send a signal to the control module 107 to control the second driving 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 sends a signal to the control module 107, and the control module 107 controls the second driving 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 the control module 107 sends a signal to the alarm module 109, and the alarm module 109 alarms to remind the staff to replace the polishing disc 101 in time;

[0053] In the formula, 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 the pressure sensor 103 needs to apply when the polishing disc 101 is not worn, G1 is the gravity of the polishing disc 101 when the polishing disc 101 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 corresponding material polishing disc 101. When the polishing disc 101 of different materials works, the initial pressure value received by the pressure sensor 103 can be reasonably controlled according to the use condition, so that the device can be suitable for the polishing disc 101 of different materials.

[0054] X=X1+G1-L×S×M;

[0055] In the formula, 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 the pressure sensor 103 needs to apply when the polishing disc 101 is not worn, G1 is the gravity of the polishing disc 101 when the polishing disc 101 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 corresponding material polishing disc 101. When the polishing disc 101 of different materials works, the initial pressure value received by the pressure sensor 103 can be reasonably controlled according to the use condition, so that the device can be suitable for the polishing disc 101 of different materials.

[0056] During the polishing process, when the value of the pressure sensor 103 reaches the pressure that the data processing module 106 calculates that should be applied to the pressure sensor 103, that is, 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 driving motor 304 from working, and when the value of the pressure sensor 103 drops to X-N, the data processing module 106 sends a signal to the control module 107 to control the first driving motor 304 to work again, and N is the allowable pressure error value during the polishing process.

Claims

1. An aspherical lens polishing apparatus comprising a fixed cover (1), characterized in that, The bottom of the inner cavity of the fixed cover (1) is provided with a polishing disc (101), and the lower part of the inner cavity of the fixed cover (1) is provided with a mounting frame (102) for mounting the polishing disc (101), and the lower end of the mounting frame (102) is fixed to the polishing disc (101) through a fixed assembly (2); The upper part of the inner cavity of the fixed cover (1) is provided with an extrusion mechanism, which extrudes the mounting frame (102) and provides pressure for the polishing disc (101), and the extrusion mechanism comprises a moving plate (301), the lower end of the moving plate (301) is fixedly provided with a compression spring (302), and the outer wall of the moving plate (301) is slidably connected with the sliding groove in the upper part of the inner wall of the fixed cover (1) through a sliding block; The middle part of the moving plate (301) is provided with a threaded rod (303) penetrating through, the threaded rod (303) is threadedly connected with the moving plate (301), the threaded rod (303) is used for adjusting the position of the moving plate (301), and the top end of the threaded rod (303) penetrates through the fixed cover (1) and is rotatably connected with the fixed cover (1); The outer wall of the mounting frame (102) is slidably connected with the sliding groove in the lower part of the inner wall of the fixed cover (1) through a sliding block, the upper end of the mounting frame (102) is embedded with a pressure sensor (103), and the upper end of the mounting frame (102) is further provided with an extrusion plate (104), and the lower end of the extrusion plate (104) is in extrusion contact with the pressure sensor (103); The lower part of the inner cavity of the mounting frame (102) is rotatably provided with a bidirectional screw rod (203); One end of the bidirectional screw rod (203) is fixedly provided with a second driving motor (204) for driving the bidirectional screw rod (203) to rotate, and the second driving motor (204) is embedded in the mounting frame (102); The upper end of the threaded rod (303) is fixedly provided with a first driving motor (304), and the first driving motor (304) is used for driving the threaded rod (303) to rotate; The outer surface of the fixed cover (1) is provided with a data processing module (106), 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), and the outer surface of the fixed cover (1) is further provided with a control module (107), the data processing module (106) sends a signal to the control module (107) according to the comparison value, and the control module (107) controls the first driving motor (304) to work; The upper end of the inner cavity of the fixed cover (1) is fixedly provided with an electronic ruler (108), the extension end of the electronic ruler (108) is fixedly connected with the upper end of the moving plate (301), and the moving plate (301) moves to pull the extension end of the electronic ruler (108) to move; 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 height value of the allowable wear of the polishing disc (101), the control module (107) is used for controlling the first driving motor (304) and the second driving motor (204) to work, and the outer surface of the fixed cover (1) is further provided with an alarm module (109), and the control module (107) is used for controlling the alarm module (109) to work. Wherein, the data processing module (106) compares the pressure that the compression spring (302) needs to exert on the pressure sensor (103) after the polishing disc (101) is worn through the following formula: X=X1+G1-L×S×M×g; Wherein, X is the pressure that the compression spring (302) needs to exert on the pressure sensor (103) after the polishing disc (101) is worn, X1 is the initial value that the polishing disc (101) needs to exert on the pressure sensor (103) when it is not worn, G1 is the gravity of the polishing disc (101) when it is not worn, L is the change of the electronic ruler (108), S is the bottom area of the polishing disc (101), and M is the density of the corresponding material polishing disc (101). When polishing discs (101) of different materials are used, 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 suitable for polishing discs (101) of different materials. During polishing, when the value of the pressure sensor (103) reaches the pressure that the data processing module (106) calculates that should be exerted on the pressure sensor (103), 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 driving motor (304) from working, and when the value of the pressure sensor (103) drops to X-N, the data processing module (106) will send a signal to the control module (107) again to control the first driving motor (304) to work. N is the allowable pressure error value during polishing.

2. The aspherical lens polishing apparatus according to claim 1, wherein The upper end of the compression spring (302) is fixedly connected with the lower end of the moving plate (301), and the lower end of the compression spring (302) is fixedly connected with the upper end of the extrusion plate (104).

3. The aspherical lens polishing apparatus according to claim 2, wherein The lower end of the mounting frame (102) is symmetrically provided with two guide grooves (105), the fixed assembly (2) comprises a guide block (201) slidably arranged in the guide groove (105), and a clamping rod (202) is fixedly arranged at the lower end of the guide block (201), two reserved holes are formed in the outer wall of the polishing disc (101) in cooperation with the two clamping rods (202).

4. The aspherical lens polishing apparatus according to claim 3, wherein The bidirectional screw rod (203) penetrates through the two guide grooves (105), and the two sides of the bidirectional screw rod (203) are respectively threadedly connected with the two guide blocks (201).

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