Lens surface abrasion resistance testing device

Abstract

The utility model discloses a kind of lens surface wear resistance experimental device, specifically related to lens experimental technical field, including shell body, the shell body outer wall one side top is fixed with placing box, the top of the inner wall middle part of placing box is fixed with electric telescopic rod, the power output end of electric telescopic rod is fixed with first connecting rod, the both ends of first connecting rod are fixed with second connecting rod, two groups of friction mechanism are provided on shell body.This device is by setting two groups of symmetrical friction mechanism, can be wear resistance experiment to the upper and lower two surfaces of lens in once clamping process, this device avoids repeated operation, greatly shortens test cycle, reduces artificial workload, simultaneously adopt servo motor drive belt drive, transmission is stable, noise is low, cooperate electric telescopic rod and can accurately control the clamping force of upper and lower friction disc to lens, simulate friction condition under different working conditions, it is favorable to more real evaluation wear resistance of lens.

Description

Technical Field

[0001] This utility model relates to the field of lens testing technology, specifically to a lens surface abrasion resistance testing device. Background Technology

[0002] Lenses, as core components of optical systems such as eyeglasses, cameras, microscopes, and laser equipment, directly affect image clarity, light transmittance, and product lifespan due to their surface quality. In daily use, lenses inevitably come into contact with and rub against dust, grit, wiping cloths, and even hard objects, causing scratches on their surfaces. Evaluating the abrasion resistance of lens materials is crucial for controlling product quality and developing new high-hardness coatings and materials; therefore, abrasion resistance testing has become an indispensable part of lens manufacturing and quality inspection.

[0003] Currently, most lens abrasion resistance tests in the industry involve clamping the lens under test with two opposing grinding wheels under specific pressure, and then rotating the lens at a constant speed on a horizontal rotating platform. During the test, the grinding wheels themselves can also rotate around their axes, thus forming a continuous, intersecting friction path with the rotating lens surface.

[0004] Current lens abrasion resistance tests typically involve fixing the lens to one side for friction testing. After testing one side, the lens is flipped over and fixed again for a second friction test, doubling the test time. Additionally, the lens position needs to be readjusted, reducing experimental efficiency and increasing workload. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a lens surface abrasion resistance testing device, which can effectively solve the problems mentioned in the background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: This utility model provides a lens surface abrasion resistance testing device, including an outer shell. A placement box is fixed to the top of one side of the outer wall of the outer shell. An electric telescopic rod is fixed to the top of the middle of the inner wall of the placement box. A first connecting rod is fixed to the power output end of the electric telescopic rod. Second connecting rods are fixed to both ends of the first connecting rod. Two sets of friction mechanisms are provided on the outer shell. Each friction mechanism includes a servo motor. A drive pulley is fixed to the power output end of the servo motor. Driven pulleys are rotatably connected to the bottom of both ends of the second connecting rod. A transmission belt is provided on the outer wall of the drive pulley and the driven pulley. A friction disc is detachably connected to the bottom of the driven pulley by bolts. A limit mechanism is provided on the inner wall of the outer shell.

[0007] Furthermore, rectangular grooves are provided through the middle of one side of the placement box on both sides, and the second connecting rod is U-shaped, with its two ends slidably connected through the two rectangular grooves respectively.

[0008] Furthermore, the driving pulley is a double-layer pulley, with the top of the driving pulley and one of the driven pulleys on the same horizontal plane, and the bottom of the driving pulley and the bottom of the other driven pulley on the same horizontal plane.

[0009] Furthermore, the limiting mechanism includes two worm gears, which are located on both sides of the middle of the top of the inner wall of the outer shell and are rotatably connected to the bottom of the outer shell through a support rod. Each of the two worm gears has a guide rail fixed to its top, and the guide rail is arranged in a horizontal spiral shape.

[0010] Furthermore, a rotating shaft is rotatably connected through one side of the outer wall of the outer shell, and worm gears are fixed on both sides of the middle of the rotating shaft. The two worm gears mesh with the two worm wheels respectively, and a knob is fixed at one end of the rotating shaft located outside the outer shell.

[0011] Furthermore, the top of the outer shell has sliding grooves on both sides of the middle section. There are two sets of sliding grooves, and the two sets of sliding grooves are respectively arranged in a corresponding manner with the two driven pulleys. Each set of sliding grooves has three sliding grooves, and the three sliding grooves are arranged in a circumferentially equidistant manner. Limiting rods are slidably connected inside the three sliding grooves, and the bottom ends of the three limiting rods are slidably connected to the guide rail.

[0012] The technical solution provided by this utility model has the following advantages compared with the known prior art: 1. This application, by setting up two sets of symmetrical friction mechanisms, can simultaneously conduct abrasion resistance tests on the upper and lower surfaces of the lens during a single clamping process. Compared with the traditional method that requires flipping the lens and re-fixing and adjusting, this device avoids repetitive operations, significantly shortens the testing cycle, and reduces manual workload. At the same time, it adopts a servo motor driven belt transmission, which ensures smooth transmission and low noise. With the help of an electric telescopic rod, it can precisely control the clamping force of the upper and lower friction discs on the lens, simulate friction conditions under different working conditions, and help to more realistically evaluate the abrasion resistance performance of the lens.

[0013] 2. This application uses a limiting mechanism to drive the spiral guide rail to move through a worm gear and worm shaft transmission, so that the three limiting rods can move towards or away from the center synchronously, thereby adapting to lenses of different sizes and automatically positioning them at the center of the friction disc. This achieves the effect of placing the center of the lens at the center of the friction mechanism, and subsequent friction can also be adjusted according to the size of the lens to prevent the lens from shifting. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a front view of the overall structure of this utility model; Figure 3 This is a schematic diagram of the friction mechanism of this utility model; Figure 4 This is a schematic diagram of the limiting mechanism of this utility model.

[0016] The labels in the diagram represent: 1. Outer shell; 2. Placement box; 3. Electric telescopic rod; 4. First connecting rod; 5. Second connecting rod; 60. Friction mechanism; 61. Servo motor; 62. Drive pulley; 63. Transmission belt; 64. Driven pulley; 65. Friction disc; 70. Limiting mechanism; 71. Rotating shaft; 72. Worm gear; 73. Knob; 74. Worm wheel; 75. Guide rail; 76. Limiting rod; 77. Slide groove. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0018] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0019] This application discloses a lens surface abrasion resistance testing device, including a housing 1. A placement box 2 is fixed to the top of one side of the outer wall of the housing 1. An electric telescopic rod 3 is fixed to the top of the middle of the inner wall of the placement box 2. A first connecting rod 4 is fixed to the power output end of the electric telescopic rod 3. A second connecting rod 5 is fixed to both ends of the first connecting rod 4. Two sets of friction mechanisms 60 are provided on the housing 1. One set of friction mechanisms 60 is located on the second connecting rod 5, and the other set of friction mechanisms 60 is located on the top of the housing 1. The friction mechanism 60 includes a servo motor 61. A drive pulley 62 is fixed to the power output end of the servo motor 61. Driven pulleys 64 are rotatably connected to the bottom of both ends of the second connecting rod 5. A transmission belt 63 is provided on the outer wall of the drive pulley 62 and the driven pulley 64. A friction disc 65 is detachably connected to the bottom of the driven pulley 64 by bolts. The friction disc 65 is detachably connected by bolts, which facilitates the selection and replacement of a suitable friction disc according to the curvature of the lens during the experiment. A limit mechanism 70 is provided on the inner wall of the housing 1.

[0020] Reference Appendix Figure 2 The middle of one side of the placement box 2 is provided with rectangular grooves on both sides. The second connecting rod 5 is U-shaped and its two ends are slidably connected to the two rectangular grooves respectively. By controlling the extension of the electric telescopic rod 3, the first connecting rod 4 is moved inside the placement box 2, which in turn drives the second connecting rod 5 to slide inside the rectangular groove, causing the friction mechanism 60 above to move downward.

[0021] Reference Appendix Figure 2 and 3 The active pulley 62 is a double-layer pulley. The top of the active pulley 62 is on the same horizontal plane as one of the driven pulleys 64, and the bottom of the active pulley 62 is on the same horizontal plane as the bottom of the other driven pulley 64. The servo motor 61 rotates, which drives the active pulley 62 to rotate. The transmission belt 63 drives the two driven pulleys 64 to rotate together, which in turn drives the friction disc 65 to rub against the surface of the lens.

[0022] Reference Appendix Figure 3 and 4 The limiting mechanism 70 includes two worm gears 74, which are located on both sides of the middle of the top of the inner wall of the outer shell 1 and are rotatably connected to the bottom of the outer shell 1 through a support rod. Each of the two worm gears 74 has a guide rail 75 fixed on its top. The guide rail 75 is arranged in a horizontal spiral shape. A rotating shaft 71 is rotatably connected through one side of the outer wall of the outer shell 1. Worms 72 are fixed on both sides of the middle of the rotating shaft 71. The two worms 72 mesh with the two worm gears 74 respectively. A knob 73 is fixed at one end of the rotating shaft 71 outside the outer shell 1. By rotating the knob 73, the worms 72 are rotated, which in turn drives the two worm gears 74 to rotate simultaneously, and drives the guide rail 75 to rotate.

[0023] Reference Appendix Figure 3 and 4 The outer shell 1 has two sets of sliding grooves 77 on both sides of the top center. The two sets of sliding grooves 77 are respectively arranged in a corresponding manner with two driven pulleys 64. Each set of sliding grooves 77 has three sliding grooves 77, which are arranged in a circumferentially equidistant manner. Each of the three sliding grooves 77 is slidably connected to a limit rod 76. The bottom end of each of the three limit rods 76 is slidably connected to a guide rail 75. The four friction discs 65 of the two sets of friction mechanisms 60 are located in the middle of the two sets of limit rods 76. By rotating the knob 73, the position of the limit rods 76 is changed. The three limit rods 76 in each set of limit rods 76 move towards the center at the same time, squeezing the edge of the lens and squeezing the lens at the center of the worm gear 74. During the subsequent wear resistance test, the friction discs 65 rub against the surface of the lens.

[0024] The workflow of this utility model is as follows: First, place the two lenses to be tested for abrasion resistance on the friction discs 65 at the bottom. Then, turn the knob 73 to rotate the worm gear 72, which in turn rotates the two worm wheels 74 simultaneously, causing the guide rail 75 to rotate and changing the position of the limiting rods 76. Three of the limiting rods 76 in each set move towards the center simultaneously, squeezing the edge of the lens and pressing it into the center of the worm wheel 74. Then, control the electric telescopic rod 3 to extend, causing the first connecting rod 4 to move inside the placement box 2 and the second connecting rod 5 to slide inside the rectangular groove, so that the upper friction mechanism 60 moves downward. The friction discs 65 of the two sets of friction mechanisms 60 squeeze the lens accordingly. Finally, start the two servo motors 61 inside the two sets of friction mechanisms 60. The two servo motors 61 rotate simultaneously, driving the drive pulley 62 to rotate. Through the transmission belt 63, the two driven pulleys 64 rotate together, thereby causing the four friction discs 65 to rub the upper and lower surfaces of the lens respectively.

[0025] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A lens surface abrasion resistance testing apparatus, characterized in that: The device includes an outer shell (1), a placement box (2) is fixed to the top of one side of the outer wall of the outer shell (1), an electric telescopic rod (3) is fixed to the top of the middle of the inner wall of the placement box (2), a first connecting rod (4) is fixed to the power output end of the electric telescopic rod (3), a second connecting rod (5) is fixed to both ends of the first connecting rod (4), two sets of friction mechanisms (60) are provided on the outer shell (1), the friction mechanism (60) includes a servo motor (61), a drive pulley (62) is fixed to the power output end of the servo motor (61), a driven pulley (64) is rotatably connected to the bottom of both ends of the second connecting rod (5), a transmission belt (63) is provided on the outer wall of the drive pulley (62) and the driven pulley (64), a friction disc (65) is detachably connected to the bottom of the driven pulley (64) by bolts, and a limit mechanism (70) is provided on the inner wall of the outer shell (1).

2. The lens surface abrasion resistance testing apparatus according to claim 1, characterized in that: The middle of one side of the placement box (2) is provided with rectangular grooves on both sides. The second connecting rod (5) is U-shaped and its two ends are slidably connected to the two rectangular grooves respectively.

3. The lens surface abrasion resistance testing apparatus according to claim 1, characterized in that: The driving pulley (62) is a double-layer pulley. The top of the driving pulley (62) is on the same horizontal plane as one of the driven pulleys (64), and the bottom of the driving pulley (62) is on the same horizontal plane as the bottom of the other driven pulley (64).

4. The lens surface abrasion resistance testing apparatus according to claim 1, characterized in that: The limiting mechanism (70) includes two worm gears (74), which are located on the two sides of the middle of the top of the inner wall of the outer shell (1) and are rotatably connected to the bottom of the outer shell (1) through a support rod. The top of each of the two worm gears (74) is fixed with a guide rail (75), which is arranged in a horizontal spiral shape.

5. The lens surface abrasion resistance testing apparatus according to claim 4, characterized in that: A rotating shaft (71) is rotatably connected through one side of the outer wall of the outer shell (1). Worms (72) are fixed on both sides of the middle part of the rotating shaft (71). The two worms (72) mesh with the two worm wheels (74) respectively. A knob (73) is fixed at one end of the rotating shaft (71) outside the outer shell (1).

6. The lens surface abrasion resistance testing apparatus according to claim 5, characterized in that: The top of the outer shell (1) has two through grooves (77) on both sides. There are two sets of the grooves (77), and the two sets of grooves (77) are respectively arranged in a corresponding manner with the two driven pulleys (64). Each set of grooves (77) has three grooves, and the three grooves (77) are arranged in a circumferentially equidistant manner. The three grooves (77) are all slidably connected to the inside of the three grooves (77), and the bottom ends of the three limit rods (76) are slidably connected to the guide rail (75).

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