A wear resistance testing apparatus for glass lenses

Abstract

The application relates to the field of lens testing, in particular to a glass lens wear resistance testing equipment. The glass lens wear resistance testing equipment comprises a chassis, a lifting unit, a protective cylinder, a switching unit and a friction head and the like; the chassis is connected with the lifting unit; the lifting unit is connected with a plurality of protective cylinders; each protective cylinder corresponds to a rubber head; each protective cylinder is connected with a switching unit; each switching unit is connected with a friction head; the upper and lower surfaces of the friction head are respectively convex and concave, and the upper and lower surfaces are both rough surfaces. The glass lens wear resistance testing equipment realizes self-adaptive testing of plane / curved surface lenses through pneumatic adsorption and fixation of the rubber head and cooperation of the reversible friction head, realizes intelligent and rapid switching of multiple working conditions while ensuring the singleness of the testing conditions in combination with the anti-pollution design of the protective cylinder and the precise abrasive spraying of the diaphragm electric nozzle, and significantly improves the lens wear resistance testing efficiency and data accuracy.

Description

Technical Field

[0001] This invention relates to the field of lens testing, and more particularly to a device for testing the abrasion resistance of glass lenses. Background Technology

[0002] In the glass lens manufacturing industry, surface abrasion resistance testing is a key aspect of quality control. Glass lenses are prone to scratches during daily use, leading to blurring. Therefore, random sampling is required after lens manufacturing to test the surface abrasion resistance. Existing testing technologies have the following shortcomings: a single test head structure cannot adapt to lens surfaces with different curvatures, resulting in high data distortion for curved lenses. Furthermore, current testing systems lack intelligent control capabilities: manual adjustment of test parameters leads to long switching times. In glass lens testing, traditional methods have large errors in assessing wear in aspherical areas, failing to accurately reflect actual usage conditions and thus hindering the quality control level of high-end optical lenses. Summary of the Invention

[0003] In order to overcome the shortcomings of existing glass lens abrasion resistance testing technology, such as insufficient testing accuracy and low efficiency due to the single test head structure that cannot adapt to different curvatures, lack of intelligent control, and large evaluation error for aspherical surfaces, this invention provides a glass lens abrasion resistance testing device.

[0004] Technical Solution: A glass lens abrasion resistance testing device includes a base frame and spring bases; the base frame is fixedly connected to two spring bases; it also includes a power box, a power unit, first connecting rods, rubber heads, air pipes, connectors, a lifting unit, protective cylinders, a switching unit, and a friction head; all spring bases are jointly fixedly connected to the power box; the power box is connected to the power unit; the power unit is connected to several first connecting rods; the first connecting rods are hollow rods; each first connecting rod is connected to a rubber head; the power unit is used to drive all the rubber heads to rotate; the power box is fixedly connected to the air pipes; the air pipes are connected to several connectors; each connector is rotatably connected to a first connecting rod; the base frame is connected to the lifting unit; the lifting unit is connected to several protective cylinders; the lifting unit is used to drive the protective cylinders to move vertically; each protective cylinder corresponds to a rubber head; each protective cylinder is connected to a switching unit; each switching unit is connected to a friction head; the switching unit is used to switch the direction of the friction head; the upper and lower surfaces of the friction head are convex and concave, respectively, and both surfaces are rough.

[0005] Optionally, the power unit includes a first motor, a first transmission rod, sleeve rods, a worm gear, and a worm wheel; the power box is equipped with the first motor; the power box is rotatably connected to the first transmission rod; the output shaft of the first motor and the first transmission rod are connected via a pulley; the power box is rotatably connected to several sleeve rods; each sleeve rod is fixedly connected to a first connecting rod; the first transmission rod is fixedly connected to several worm gears; each sleeve rod is fixedly connected to a worm wheel; each worm wheel meshes with a worm gear.

[0006] Optionally, the lifting unit includes a first electric actuator, a top frame, and a second link; the base frame is equipped with two first electric actuators; the telescopic parts of all the first electric actuators are fixedly connected to the top frame; the top frame is fixedly connected to several second links; each second link is fixedly connected to a protective cylinder.

[0007] Optionally, the switching unit includes a second electric actuator, a second motor, and a second transmission rod; the protective cylinder is equipped with two second electric actuators distributed front and rear; the telescopic part of the front second electric actuator is equipped with a second motor; each telescopic part of the second electric actuator is rotatably connected to a second transmission rod; the output shaft of the second motor is fixedly connected to the front second transmission rod; all the second transmission rods are fixedly connected to the friction head; all the second transmission rods cooperate with the protective cylinder.

[0008] Optionally, it also includes a first friction cloth, a first clamp, a second friction cloth, and a second clamp; each friction head has a first friction cloth detachably connected to its upper part; the first friction cloth covers the top of the friction head; each first friction cloth is detachably connected to a first clamp; each friction head has a second friction cloth detachably connected to its lower part; the second friction cloth covers the bottom of the friction head; each second friction cloth is detachably connected to a second clamp; each protective cylinder is slidably connected to an adjacent first clamp; each protective cylinder is slidably connected to an adjacent second clamp.

[0009] Optionally, both the first friction cloth and the second friction cloth can undergo elastic deformation.

[0010] Optionally, the first and second clamps are coated with a wear-resistant coating.

[0011] Optionally, it also includes a feed pipe and a diaphragm; the feed pipe is fixedly connected to the top frame; all the second links are hollow tubes; the feed pipe is connected to all the second links; a diaphragm is fixedly connected inside the protective cylinder; several electric nozzles are installed on the diaphragm; the diaphragm divides the space inside the protective cylinder into an upper space and a lower space; each second link is connected to an upper space; the friction head is located in the lower space.

[0012] Optionally, it also includes a conduit; each friction head has a hollow groove; the upper part of the hollow groove has several first through holes; the lower part of the hollow groove has several second through holes; a second transmission rod with a micro-hollow rod is connected to the rear of each friction head; each second transmission rod is connected to a hollow groove; each second transmission rod is connected to a flexible conduit on the side away from the friction head; all the conduits are connected to the trachea.

[0013] Optionally, it also includes a third electric actuator; the protective cylinder is equipped with the third electric actuator; the telescopic part of the third electric actuator is fixedly connected to the diaphragm; the diaphragm is made of deformable rubber.

[0014] The beneficial effects are: 1. This invention uses a rubber head to pneumatically adsorb and fix the lens body, and a flip-up friction head to achieve adaptive testing of flat / curved lenses. Combined with the protective cylinder anti-pollution design and the diaphragm electric nozzle to accurately spray abrasive, it can achieve intelligent and rapid switching of multiple working conditions while ensuring the singleness of testing conditions, which significantly improves the efficiency and data accuracy of lens abrasion resistance testing.

[0015] 2. By using air suction combined with a hollow groove to form negative pressure adsorption, the abrasive is evenly embedded in the first or second friction cloth. Combined with the third electric actuator to adjust the curvature of the diaphragm to optimize the abrasive spray trajectory, this not only solves the test distortion problem caused by abrasive rolling, but also ensures the uniformity of abrasive distribution during concave mirror and plane mirror testing, significantly improving the accuracy and reliability of the lens body friction test. Attached Figure Description

[0016] Figure 1 This is a first-view perspective three-dimensional structural diagram of the glass lens abrasion resistance testing device of the present invention;

[0017] Figure 2 This is a second perspective three-dimensional structural diagram of the glass lens abrasion resistance testing device of the present invention;

[0018] Figure 3 This is a schematic diagram of the power box installation position according to the present invention;

[0019] Figure 4 This is a schematic diagram of the internal structure of the power box of the present invention;

[0020] Figure 5 This is a schematic diagram of the internal structure of the protective cylinder of the present invention;

[0021] Figure 6 This is a partial cross-sectional view of the friction head of the present invention;

[0022] Figure 7 This is a side view of the abrasion resistance testing device for glass lenses according to the present invention.

[0023] The markings in the attached diagram are as follows: 111-Lens body, 1-Base frame, 2-Spring base, 3-Power box, 4-First motor, 5-First transmission rod, 6-Sleeve rod, 7-First connecting rod, 8-Rubber head, 9-Worm gear, 10-Worm wheel, 11-Air pipe, 12-Connector, 13-First electric actuator, 14-Top frame, 15-Second connecting rod, 16-Protective cylinder, 17-Second electric actuator, 18-Second motor, 19-Second transmission rod, 20-Friction head, 21-First friction cloth, 22-First clamp, 23-Second friction cloth, 24-Second clamp, 25-Feeding pipe, 26-Diaphragm, 27-Conduit, 28-Third electric actuator, 1601-Upper space, 1602-Lower space, 201-Hollow groove, 202-First through hole, 203-Second through hole. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0025] First embodiment: A glass lens abrasion resistance testing device, according to Figures 1-7 As shown, it includes a base frame 1 and a spring base 2; the base frame 1 is fixedly connected to two spring bases 2 distributed front and rear.

[0026] It also includes a power box 3, a power unit, a first connecting rod 7, a rubber head 8, an air pipe 11, a connector 12, a lifting unit, a protective cylinder 16, a switching unit, and a friction head 20; the power box 3 is fixedly connected to the upper part of all the spring bases 2; the power box 3 is connected to the power unit; the power unit is connected to several equidistant first connecting rods 7; the first connecting rods 7 are hollow rods; each first connecting rod 7 is connected to a rubber head 8; the lower part of the power box 3 is fixedly connected to the air pipe 11; the air pipe 11 is connected to several equidistant connectors 12; each connector 12 is rotatably connected to a first connecting rod 7; the base frame 1 is connected to the lifting unit; the lifting unit is connected to several equidistant protective cylinders 16; each protective cylinder 16 corresponds to a rubber head 8; each protective cylinder 16 is connected to a switching unit; each switching unit is connected to a friction head 20; the upper and lower surfaces of the friction head 20 are convex and concave, respectively, and both surfaces are rough.

[0027] The power unit includes a first motor 4, a first transmission rod 5, sleeve rods 6, worm gears 9, and worm wheels 10; the first motor 4 is mounted on the lower part of the power box 3; the first transmission rod 5 is rotatably connected to the power box 3; the output shaft of the first motor 4 is connected to the first transmission rod 5 via a pulley; several sleeve rods 6 are rotatably connected to the power box 3; each sleeve rod 6 is fixedly connected to a first connecting rod 7; several worm gears 9 are fixedly connected to the first transmission rod 5; each sleeve rod 6 is fixedly connected to a worm wheel 10; each worm wheel 10 meshes with a worm gear 9.

[0028] The lifting unit includes a first electric actuator 13, a top frame 14, and a second connecting rod 15; the base frame 1 is equipped with two first electric actuators 13 distributed on the left and right; the first electric actuators 13 are electric push rods; the telescopic parts of all the first electric actuators 13 are fixedly connected to the top frame 14; the top frame 14 is fixedly connected to several second connecting rods 15 distributed at equal intervals; each second connecting rod 15 is fixedly connected to a protective cylinder 16.

[0029] The switching unit includes a second electric actuator 17, a second motor 18, and a second transmission rod 19; the protective cylinder 16 is equipped with two second electric actuators 17 distributed front and rear; the second electric actuator 17 is an electric push rod; the telescopic part of the front second electric actuator 17 is equipped with a second motor 18; each telescopic part of the second electric actuator 17 is rotatably connected to a second transmission rod 19; the output shaft of the second motor 18 is fixedly connected to the front second transmission rod 19; all the second transmission rods 19 are fixedly connected to the friction head 20; all the second transmission rods 19 cooperate with the protective cylinder 16.

[0030] It also includes a first friction cloth 21, a first clamp 22, a second friction cloth 23, and a second clamp 24; each friction head 20 has a first friction cloth 21 detachably connected to its upper part; the first friction cloth 21 covers the top of the friction head 20; each first friction cloth 21 is detachably connected to a first clamp 22; each friction head 20 has a second friction cloth 23 detachably connected to its lower part; the second friction cloth 23 covers the bottom of the friction head 20; each second friction cloth 23 is detachably connected to a second clamp 24; each protective cylinder 16 is slidably connected to the adjacent first clamp 22; each protective cylinder 16 is slidably connected to the adjacent second clamp 24.

[0031] Both the first friction cloth 21 and the second friction cloth 23 can undergo elastic deformation.

[0032] The first clamp 22 and the second clamp 24 are coated with a wear-resistant coating.

[0033] It also includes a feed pipe 25 and a diaphragm 26; the top frame 14 is fixedly connected to the feed pipe 25; all the second connecting rods 15 are hollow tubes; the feed pipe 25 is connected to all the second connecting rods 15; a diaphragm 26 is fixedly connected inside the protective cylinder 16; several electric nozzles are installed on the diaphragm 26; the diaphragm 26 divides the space inside the protective cylinder 16 into an upper space 1601 and a lower space 1602; each second connecting rod 15 is connected to an upper space 1601; the friction head 20 is located in the lower space 1602.

[0034] The working steps of the above embodiments are as follows:

[0035] First, the two first electric actuators 13 are activated. The first electric actuators 13 extend, synchronously moving the top frame 14 and related components upwards, thus moving the protective cylinder 16 away from the power box 3. Then, the external robotic arm is controlled to precisely transfer the lens body 111 to the rubber head 8. Once all rubber heads 8 are fitted with the lens body 111, ... Figure 3 As shown, an external air pump is connected to the air pipe 11 and started. A vacuum is drawn through the connector 12 and the first connecting rod 7, so that the lens body 111 is tightly attached to the rubber head 8, thus completing the fixation.

[0036] The two second electric actuators 17 are extended, driving the second transmission rod 19 and components to move downward, causing the friction head 20 to exit the protective cylinder 16. The operator covers the convex surface of the friction head 20 with the first friction cloth 21 and fixes it with the first clamp 22. The second motor 18 is started, driving the second transmission rod 19 to rotate so that the concave surface of the friction head 20 faces upward. Similarly, the second friction cloth 23 is fixed. After the fixing is completed, the second electric actuators 17 are retracted to reset the friction head 20.

[0037] Next, the test surface of the friction head 20 is selected according to the type of the lens body 111. Currently, the lens bodies 111 on the market are mainly divided into plane mirrors, convex mirrors, and concave mirrors. When conducting a wear resistance test on a concave mirror, the lens body 111 is tested through the side of the friction head 20 with the first friction cloth 21 attached. At this time, it is necessary to control the extension of the two second electric actuators 17, synchronously driving the second transmission rod 19 and its corresponding components downwards, causing the friction head 20 to retract from the protective cylinder 16. Then, after the extension of the second electric actuators 17 exceeds the radius of the friction head 20, the second motor 18 is started, synchronously driving the second transmission rod 19 and its corresponding components to rotate, causing the friction head 20 to carry the first friction cloth 21. With one side of the friction cloth 21 facing the lens body 111, when testing a convex mirror or a plane mirror, simply turn the side of the friction head 20 with the second friction cloth 23 towards the lens body 111. Then, control the two second electric actuators 17 to retract, synchronously driving the second transmission rod 19 and its corresponding components to move upward, so that the upper part of the friction head 20 returns to the protective cylinder 16. Thus, the protective cylinder 16 protects the side of the friction head 20 that has not been tested, preventing airborne particles and impurities from falling onto the first friction cloth 21 or the second friction cloth 23, affecting the consistency of the test conditions, and failing to guarantee the accuracy of the test results for the lens body 111. At this point, the pre-test preparation work is complete.

[0038] Next, the two first electric actuators 13 are controlled to retract, synchronously driving the top frame 14 and its corresponding components to move downwards. Simultaneously, the first motor 4 is started. The output shaft of the first motor 4 drives the first transmission rod 5 to rotate via a pulley, synchronously driving the worm gear 9 to rotate. Each worm gear 9 drives a worm wheel 10 to rotate, and each worm wheel 10 drives a sleeve rod 6 to rotate, synchronously driving the first connecting rod 7 and its corresponding components to rotate, causing the lens body 111 to rotate. When the first friction cloth 21 or the second friction cloth 23 contacts the lens body 111, the lens body 111 is tested. If testing the lens body 111 of a convex mirror, the second friction cloth 23 is fixed to the friction head 20 in a position as follows: Figure 6 As shown, the second friction cloth 23 of the elastic material is deformed and convex by the lens body 111, so that the second friction cloth 23 is in close contact with the lens body 111 for testing. If the lens body 111 of a plane mirror is being tested, the flat state of the second friction cloth 23 is sufficient for the test of the plane mirror. Then, the lens body 111 is rotated and rubbed with the first friction cloth 21 or the second friction cloth 23 for a period of time. Then, the lens body 111 can be flipped and fixed by an external robotic arm, and then the friction test is performed again. After that, the surface of the lens body 111 is observed by a machine vision camera to obtain the wear resistance parameters of the two sides of the lens body 111.

[0039] After completing the lens body 111 test, if more precise wear resistance parameters of the lens body 111 are required, the feed pipe 25 can be connected to an external feed pump. The external feed pump delivers the abrasive solution through the feed pipe 25 and the hollow second connecting rod 15 to the upper space 1601. Then, the evenly arranged electric nozzles on the diaphragm 26 can evenly spray the abrasive into the first friction cloth 21 or the second friction cloth 23 in the lower space 1602. The first clamp 22 and the second clamp 24 are tightly attached to the protective cylinder 16, thereby spraying the abrasive onto the first friction cloth 21 or the second friction cloth 23. When spraying abrasive, it effectively prevents the abrasive from leaking out of the lower space 1602 and polluting the air environment. Spraying abrasive onto the first friction cloth 21 or the second friction cloth 23 can change the coefficient of friction on the first friction cloth 21 or the second friction cloth 23, thereby testing the wear resistance of the lens body 111 under different abrasive concentrations. This effectively saves a lot of time and effort, avoiding the need to manually change the first friction cloth 21 or the second friction cloth 23 with different roughness to test the wear resistance of the lens body 111, which wastes a lot of time and effort and greatly limits the testing efficiency of the wear resistance of the lens body 111.

[0040] Second embodiment: Based on the first embodiment, according to Figures 1-7As shown, it also includes a conduit 27; each friction head 20 has a hollow groove 201; the upper part of the hollow groove 201 has several first through holes 202; the lower part of the hollow groove 201 has several second through holes 203; the rear part of each friction head 20 is connected to a second transmission rod 19, which is a micro-hollow rod; each second transmission rod 19 is connected to a hollow groove 201; each second transmission rod 19 is connected to a flexible conduit 27 on the side away from the friction head 20; the lower part of all the conduits 27 are connected to the trachea 11.

[0041] It also includes a third electric actuator 28; the protective cylinder 16 is equipped with the third electric actuator 28; the third electric actuator 28 is an electric push rod; the telescopic part of the third electric actuator 28 is fixedly connected to the diaphragm 26; the diaphragm 26 is made of deformable rubber material.

[0042] The working steps of the above embodiments are as follows:

[0043] Based on the first embodiment, considering that the abrasive is sprayed onto the first friction cloth 21 or the second friction cloth 23, when the external air pump draws air through the air pipe 11, the air pipe 11 also draws out the air in the hollow groove 201 through the conduit 27 and the hollow second transmission rod 19 behind it. The airflow enters the hollow groove 201 through the first through hole 202 and the second through hole 203. At the same time, when the outside air enters the first through hole 202 and the second through hole 203, it passes through the first friction cloth 21 or the second friction cloth 23. The abrasive sprayed on the friction cloth moves towards the friction head 20 under the action of suction force, so that the abrasive is tightly embedded in the friction cloth, realizing the abrasive limit and fixation. This avoids the abrasive floating on the surface of the first friction cloth 21 or the second friction cloth 23 from relative rolling when it comes into contact with the rotating lens body 111 when the directly sprayed abrasive is not fixed, which would affect the friction test effect.

[0044] Another consideration is that when the electric nozzle on the diaphragm 26 sprays abrasive downwards, the first friction cloth 21 is in an upward arched state while the second friction cloth 23 is in a horizontal state. Compared to the equidistant distribution of the electric nozzle to the second friction cloth 23, the distance from the nozzle to the upward arched first friction cloth 21 gradually increases from the center to the periphery. Since the abrasive is sprayed out in a cone shape, the distance traveled to the first friction cloth 21 is different. When testing the concave mirror, the third electric actuator 28 is controlled to retract before spraying the abrasive, causing the rubber diaphragm 26 to convex upwards in the center. By changing the relative position of the nozzle and the friction cloth, the distance difference of the abrasive reaching different positions is reduced, avoiding the increase in interference area caused by the increased cone area due to the increased distance between the nozzle and the friction cloth. This ensures that the abrasive is evenly distributed on the first friction cloth 21 and prevents test result deviations caused by the difference in the amount of abrasive between the center and the edge of the lens during testing.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wear resistance testing equipment for glass lenses, comprising a base frame (1) and spring bases (2); the base frame (1) is fixed with two spring bases (2); characterized in that, Also include the power box (3); all spring base (2) is fixed together with the power box (3); the power box (3) is connected with the power unit; the power unit is connected with a plurality of first connecting rod (7); the first connecting rod (7) is a hollow rod; each first connecting rod (7) is communicated with a rubber head (8); the power unit is used to drive all the rubber head (8) rotation; the power box (3) is fixed with the air pipe (11); the air pipe (11) is communicated with a plurality of connecting head (12); each connecting head (12) is rotatably connected with a first connecting rod (7); the chassis (1) is connected with the lifting unit; the lifting unit is connected with a plurality of protection cylinder (16); the lifting unit is used to drive the protection cylinder (16) vertical movement; each protection cylinder (16) corresponds to a rubber head (8); each protection cylinder (16) is connected with a switching unit; each switching unit is connected with a friction head (20); the switching unit is used to switch the steering of the friction head (20); the upper and lower surfaces of the friction head (20) are convex and concave respectively, and the upper and lower surfaces are rough surfaces; Each friction head (20) is detachably connected with a first friction cloth (21); each friction head (20) is detachably connected with a second friction cloth (23); The device also includes a diaphragm (26); the diaphragm (26) is provided with a plurality of downward spraying electric nozzles; the diaphragm (26) divides the space in the protection cylinder (16) into an upper space (1601) and a lower space (1602); the friction head (20) is located in the lower space (1602); Each friction head (20) is provided with a hollow groove (201); the upper part of the hollow groove (201) is provided with a plurality of first through holes (202); the lower part of the hollow groove (201) is provided with a plurality of second through holes (203); the second transmission rod (19) connected to the rear of each friction head (20) is a hollow rod; each second transmission rod (19) is communicated with a hollow groove (201); When the external air pump draws air through the air pipe (11), it also draws air in the hollow groove (201) through the conduit (27) and the hollow second transmission rod (19) behind, and the airflow enters the hollow groove (201) through the first through hole (202) and the second through hole (203), and passes through the first friction cloth (21) or the second friction cloth (23) at the same time, the abrasive sprayed on the friction cloth moves towards the friction head (20) under the action of suction force, so that the abrasive is tightly embedded in the friction cloth, realizing the abrasive limiting and fixing.

2. The abrasion resistance testing apparatus for a glass lens according to claim 1, wherein, The power unit comprises a first motor (4), a first transmission rod (5), a sleeve rod (6), a worm (9) and a worm wheel (10); the power box (3) is provided with the first motor (4); the power box (3) is rotatably connected with the first transmission rod (5); the output shaft of the first motor (4) is connected with the first transmission rod (5) through a belt pulley; the power box (3) is rotatably connected with a plurality of sleeve rods (6); each sleeve rod (6) is fixedly connected with a first connecting rod (7); the first transmission rod (5) is fixedly connected with a plurality of worms (9); each sleeve rod (6) is fixedly connected with a worm wheel (10); each worm wheel (10) is engaged with a worm (9).

3. A scratch resistance testing apparatus for glass lenses according to claim 2, wherein, The lifting unit comprises a first electric actuator (13), a top frame (14) and a second connecting rod (15); the bottom frame (1) is provided with two first electric actuators (13); the telescopic parts of all the first electric actuators (13) are fixedly connected with the top frame (14); the top frame (14) is fixedly connected with a plurality of second connecting rods (15); each second connecting rod (15) is fixedly connected with a protective cylinder (16).

4. The abrasion resistance testing apparatus for ophthalmic lenses according to claim 3, wherein, The switching unit comprises a second electric actuator (17), a second motor (18) and a second transmission rod (19); the protective cylinder (16) is provided with two front and rear distributed second electric actuators (17); the telescopic part of the front second electric actuator (17) is provided with the second motor (18); the telescopic part of each second electric actuator (17) is rotatably connected with a second transmission rod (19); the output shaft of the second motor (18) is fixedly connected with the front second transmission rod (19); all the second transmission rods (19) are fixedly connected with a friction head (20); all the second transmission rods (19) are matched with the protective cylinder (16).

5. The abrasion resistance testing apparatus for ophthalmic lenses according to claim 1, wherein, The first friction cloth (21) and the second friction cloth (23) can be elastically deformed.

6. The abrasion resistance testing apparatus for a glass lens according to claim 1, wherein, The protective cylinder (16) is provided with a third electric actuator (28); the telescopic part of the third electric actuator (28) is fixedly connected with a diaphragm (26); the diaphragm (26) is made of deformable rubber material; When the first friction cloth (21) is used for testing the concave mirror, the third electric actuator (28) is controlled to be retracted before spraying the abrasive, so that the middle part of the rubber diaphragm (26) is deformed upward, the relative position between the nozzle and the friction cloth is changed, and the distance difference of the abrasive reaching different positions is reduced.

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