An inspection fixture

Abstract

The utility model relates to detection equipment technical field especially relates to a kind of detection clamps. Including base, the top of base is fixedly connected with detection disc by connecting column, the middle part of base top is equipped with rotary adjustment mechanism, rotary adjustment mechanism is used to drive lens to rotate, the inside of detection disc is equipped with clamping mechanism, clamping mechanism is used to clamp lens. The utility model through the structural design of clamping mechanism, so that four directions can be simultaneously clamped to lens when using, and clamping action is synchronous, improve the accuracy of lens center positioning, while it can adapt to different size lenses when clamping, increase the adaptability and convenience when using, through the structural design of rotary adjustment mechanism, so that lens can be rotated and adjusted when using, to detect the position of original clamping, without repeatedly disassembling and assembling multiple times, improve the comprehensiveness and accuracy of detection.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a testing fixture. Background Technology

[0002] After undergoing a series of operations such as milling, edge grinding, polishing, cleaning, and fine grinding, optical lenses need to be tested for important parameters before leaving the factory, such as lens height, thickness, width, and center offset.

[0003] A lens clamp for inspection, disclosed in CN216926027U, includes an inspection disc with at least three clamping mechanisms evenly distributed around its circumference. Each clamping mechanism includes a first cylinder and a clamping wheel, the clamping wheel being rotatably mounted on the telescopic end of the first cylinder. A slider is slidably disposed in the central hole of the inspection disc, the slider being connected to a second cylinder. A support block is connected inside the slider via a bearing, and a rotatable pressing mechanism is disposed above the support block. This clamp can stably clamp lenses, quickly achieve center positioning of the lens and the clamp, and facilitate adjustment of the clamping position without repeated disassembly and reassembly. It allows for comprehensive inspection of lenses, improving clamping and inspection efficiency.

[0004] However, when the inventors implemented this device, they found the following defects: when clamping the lens, the three clamping mechanisms may not be able to clamp simultaneously, resulting in a deviation in the center positioning of the lens.

[0005] Based on this, a detection fixture is proposed, providing a new solution to the above-mentioned technical problems. Utility Model Content

[0006] The purpose of this invention is to provide a testing fixture, which, in general, addresses the problems raised in the background art.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] A testing fixture includes a base, a testing disk fixedly connected to the top of the base via a connecting column, a rotation adjustment mechanism installed in the middle of the top of the base for rotating a lens, and a clamping mechanism installed on the inner side of the testing disk for clamping the lens.

[0009] Preferably, the clamping mechanism includes a second gear ring, which is rotatably connected to the inner side of the detection disk. Four second gears are evenly distributed and meshed on the inner side of the second gear ring, and all four second gears are rotatably connected to the detection disk. Clamping racks are meshed on one side of each of the four second gears, and the four clamping racks are slidably connected to the detection disk. A first drive motor is fixedly connected to one end of the bottom of the detection disk, and a third gear is fixedly connected to the output end of the first drive motor through the detection disk. The third gear meshes with the outer side of the second gear ring.

[0010] Preferably, each of the four clamping racks has a T-shaped guide strip fixedly connected to its bottom, and four T-shaped connecting slots are evenly distributed on the inner side of the detection disk. The four clamping racks are connected to the detection disk through the cooperation of the corresponding T-shaped guide strips and the T-shaped connecting slots.

[0011] Preferably, a T-shaped guide ring is fixedly connected to the bottom of the second gear ring, and an annular T-shaped groove is provided on the inner side of the detection disk. The second gear ring is connected to the detection disk through the cooperation of the T-shaped guide ring and the annular T-shaped groove.

[0012] Preferably, the rotation adjustment mechanism includes a drive cylinder, which is fixed to the middle of the top of the base. The output end of the drive cylinder is fixedly connected to a connecting plate. One end of the bottom of the connecting plate is fixedly connected to a second drive motor. The output end of the second drive motor passes through the connecting plate and is fixedly connected to a first gear. One end of the first gear is meshed with a first gear ring. A connecting sleeve is fixedly connected to the inner side of the first gear ring. A support block is rotatably connected to the inner side of the connecting sleeve. The support block is fixedly connected to the connecting plate.

[0013] Preferably, four telescopic rods are evenly and fixedly connected to the outer periphery of the top of the connecting sleeve. A drive gear rack is fixedly connected to the ends of the four telescopic rods that are far apart from each other. Springs are slidably connected to the outer sides of the four telescopic rods. The ends of the four springs that are far apart from each other are fixedly connected to the corresponding drive gear racks. The ends of the four springs that are close together are fixedly connected to the top of the connecting sleeve. A connecting frame is fixedly connected to the ends of the four clamping racks that are close together. Clamping wheels are rotatably connected to the inner sides of the four connecting frames. The bottoms of the four clamping wheels penetrate the corresponding connecting frames and are fixedly connected to a fourth gear. The bottoms of the four fourth gears are respectively engaged with the tops of the corresponding drive gear racks.

[0014] It is clear without a doubt that the technical solution described above in this application can solve the technical problem that this application aims to address.

[0015] At the same time, through the above technical solutions, this utility model has at least the following beneficial effects:

[0016] 1. The present invention, through the structural design of the clamping mechanism, enables the lens to be clamped simultaneously in four directions during use, and the clamping action is performed synchronously, which improves the accuracy of the lens center positioning. At the same time, it can adapt to lenses of different sizes during clamping, increasing the adaptability and convenience during use.

[0017] 2. This utility model, through the structural design of the rotation adjustment mechanism, allows the lens to be rotated and adjusted during use, thereby enabling the detection of the original clamped position without the need for repeated disassembly and reassembly, thus improving the comprehensiveness and accuracy of the detection. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a top view of the present invention;

[0020] Figure 2 This is a schematic diagram of the present invention;

[0021] Figure 3 This is a schematic diagram of the interior of the detection disc of this utility model;

[0022] Figure 4 This is a schematic diagram of the clamping rack and T-shaped guide strip of this utility model;

[0023] Figure 5 This is a schematic diagram of the annular T-shaped groove of this utility model;

[0024] Figure 6 This is a schematic diagram of the second gear ring and the T-shaped guide ring of this utility model;

[0025] Figure 7 This is a schematic diagram of the telescopic rod and drive gear rack of this utility model.

[0026] In the diagram: 1. Base; 2. Detection plate; 3. Lens; 4. Clamping rack; 5. First drive motor; 6. Drive cylinder; 7. Connecting plate; 8. Second drive motor; 9. First gear ring; 10. First gear; 11. Connecting sleeve; 12. Clamping wheel; 13. Second gear ring; 14. Second gear; 15. Connecting frame; 16. Support block; 17. Telescopic rod; 18. Drive gear rack; 19. T-shaped guide bar; 20. Third gear; 21. Annular T-groove; 22. T-shaped guide ring; 23. Fourth gear; 24. Spring. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0028] Example 1:

[0029] Reference Figure 1-7 A testing fixture includes a base 1, a testing disk 2 fixedly connected to the top of the base 1 via a connecting column, a rotation adjustment mechanism installed in the middle of the top of the base 1, the rotation adjustment mechanism being used to drive a lens 3 to rotate, and a clamping mechanism installed on the inner side of the testing disk 2, thereby enabling the lens 3 to be rotated and adjusted during use, so as to test the original clamping position without repeated disassembly and reassembly, improving the comprehensiveness and accuracy of the test. At the same time, it enables the lens 3 to be clamped in four directions simultaneously during use, and the clamping action is performed synchronously, improving the accuracy of center positioning of the lens 3. In addition, it can adapt to lenses 3 of different sizes when clamping, increasing the adaptability and convenience of use.

[0030] The clamping mechanism includes a second gear ring 13. The inner side of the detection disk 2 is rotatably connected to the second gear ring 13. Four second gears 14 are evenly distributed and meshed on the inner side of the second gear ring 13. The four second gears 14 are rotatably connected to the detection disk 2. Clamping racks 4 are meshed on one side of each of the four second gears 14. The four clamping racks 4 are slidably connected to the detection disk 2. A first drive motor 5 is fixedly connected to one end of the bottom of the detection disk 2. A third gear 20 is fixed through the detection disk 2 at the output end of the first drive motor 5. The third gear 20 is meshed with the outer side of the second gear ring 13. The outer and inner sides of the second gear ring 13 are provided with meshing teeth. The outer meshing teeth are meshed with the third gear 20, and the inner meshing teeth are meshed with the second gears 14. In use, starting the third gear 20 will drive the second gear ring 13 to rotate, which in turn will drive the four second gears 14 to rotate simultaneously, which in turn will drive the four clamping racks 4 to move.

[0031] The bottom of each of the four clamping racks 4 is fixedly connected with a T-shaped guide strip 19. The inner side of the detection disk 2 is provided with four T-shaped connecting slots. The four clamping racks 4 are connected to the detection disk 2 through the cooperation of the corresponding T-shaped guide strip 19 and the T-shaped connecting slot. The detection disk 2 limits and guides the clamping racks 4 through the T-shaped connecting slot.

[0032] The bottom of the second gear ring 13 is fixedly connected to a T-shaped guide ring 22. An annular T-shaped groove 21 is opened on the inner side of the detection disk 2. The second gear ring 13 is connected to the detection disk 2 through the cooperation of the T-shaped guide ring 22 and the annular T-shaped groove 21. The detection disk 2 limits the T-shaped guide ring 22 through the annular T-shaped groove 21, thereby limiting the second gear ring 13.

[0033] The rotation adjustment mechanism includes a drive cylinder 6, which is fixed to the middle of the top of the base 1. The output end of the drive cylinder 6 is fixedly connected to a connecting plate 7. One end of the bottom of the connecting plate 7 is fixedly connected to a second drive motor 8. The output end of the second drive motor 8 passes through the connecting plate 7 and is fixedly connected to a first gear 10. One end of the first gear 10 is meshed with a first gear ring 9. The inner side of the first gear ring 9 is fixedly connected to a connecting sleeve 11. The inner side of the connecting sleeve 11 is rotatably connected to a support block 16. The support block 16 is fixedly connected to the connecting plate 7. When in use, starting the second drive motor 8 will drive the first gear 10 to rotate, which in turn drives the first gear ring 9 to rotate, which in turn drives the connecting sleeve 11 to rotate.

[0034] Four telescopic rods 17 are evenly and fixedly connected to the outer periphery of the top of the connecting sleeve 11. Each of the four telescopic rods 17 has a drive gear rack 18 fixedly connected to its far-away ends. Springs 24 are slidably connected to the outer sides of each of the four telescopic rods 17. The far-away ends of each of the four springs 24 are fixedly connected to their respective drive gear racks 18, while the close-away ends of each of the four springs 24 are fixedly connected to the top of the connecting sleeve 11. Connecting frames 15 are fixedly connected to the close-away ends of each of the four clamping racks 4. Clamping wheels 12 are rotatably connected to the inner sides of each of the four connecting frames 15. The bottoms of each of the four clamping wheels 12 pass through their respective connecting frames 15 and are fixedly connected to a fourth gear 23. The bottoms of the four fourth gears 23 mesh with the tops of their respective drive gear racks 18. When the drive cylinder 6 drives the connecting plate 7 to move upward, it will drive the drive gear rack 18 to move upward. When the support block 16 lifts the lens 3, the drive gear rack 18 is fully engaged with the fourth gear 23. When the four clamping wheels 12 move towards each other, the four clamping wheels 12 will drive the four drive gear racks 18 to move towards each other through the fourth gear 23. When the drive gear rack 18 moves towards the connecting sleeve 11, it will compress the telescopic rod 17 and the spring 24. When the four clamping wheels 12 move away from each other, the spring 24 will drive the drive gear rack 18 to move away from the connecting sleeve 11 through the elastic force generated by its own compression, so that the drive gear rack 18 is always engaged with the fourth gear 23.

[0035] In summary:

[0036] The implementation process of the above technical solution is as follows:

[0037] When it is necessary to clamp the lens 3 synchronously, the first drive motor 5 is started, which drives the third gear 20 to rotate, which in turn drives the second gear ring 13 to rotate, which in turn drives the four second gears 14 to rotate simultaneously, which in turn drives the four clamping racks 4 to move in a direction away from or towards each other, which in turn drives the four clamping wheels 12 to move in a direction towards or away from each other, thereby completing the clamping of the lens 3.

[0038] When it is necessary to rotate and adjust the lens 3, start the drive cylinder 6, so that the drive cylinder 6 drives the connecting plate 7 to move upward as a whole, which in turn drives the support block 16 to move upward, so that the support block 16 lifts the lens 3, and the lens 3 is removed from the detection plate 2.

[0039] As the connecting disc 7 moves upward, it drives the connecting sleeve 11 to move upward, which in turn drives the four drive gear racks 18 to move upward simultaneously, so that the four drive gear racks 18 are fully engaged with the four fourth gears 23 respectively. Then, the second drive motor 8 is started, which drives the first gear 10 to rotate, which in turn drives the first gear ring 9 to rotate, which in turn drives the connecting sleeve 11 to rotate, which in turn drives the four drive gear racks 18 to rotate simultaneously, which in turn drives the four clamping wheels 12 to rotate simultaneously through the four fourth gears 23, thereby causing the four clamping wheels 12 to drive the lens 3 to rotate.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A testing fixture, characterized in that, Includes a base (1), the top of which is fixedly connected to a detection disk (2) via a connecting column. A rotation adjustment mechanism is installed in the middle of the top of the base (1), which is used to drive the lens (3) to rotate. A clamping mechanism is installed on the inner side of the detection disk (2), which is used to clamp the lens (3).

2. The detection fixture according to claim 1, characterized in that, The clamping mechanism includes a second gear ring (13), which is rotatably connected to the inner side of the detection disk (2). Four second gears (14) are evenly meshed on the inner side of the second gear ring (13). The four second gears (14) are rotatably connected to the detection disk (2). Clamping racks (4) are meshed on one side of each of the four second gears (14). The four clamping racks (4) are slidably connected to the detection disk (2). A first drive motor (5) is fixedly connected to one end of the bottom of the detection disk (2). A third gear (20) is fixed through the detection disk (2) at the output end of the first drive motor (5). The third gear (20) is meshed with the outer side of the second gear ring (13).

3. The detection fixture according to claim 2, characterized in that, The bottom of each of the four clamping racks (4) is fixedly connected with a T-shaped guide strip (19). The inner side of the detection disk (2) is provided with four T-shaped connecting grooves. The four clamping racks (4) are connected to the detection disk (2) through the cooperation of the corresponding T-shaped guide strip (19) and the T-shaped connecting groove.

4. The detection fixture according to claim 2, characterized in that, The bottom of the second gear ring (13) is fixedly connected to a T-shaped guide ring (22), and an annular T-shaped groove (21) is opened on the inner side of the detection disk (2). The second gear ring (13) is connected to the detection disk (2) through the cooperation of the T-shaped guide ring (22) and the annular T-shaped groove (21).

5. A testing fixture according to claim 2, characterized in that, The rotation adjustment mechanism includes a drive cylinder (6), which is fixed in the middle of the top of the base (1). The output end of the drive cylinder (6) is fixedly connected to a connecting plate (7). One end of the bottom of the connecting plate (7) is fixedly connected to a second drive motor (8). The output end of the second drive motor (8) passes through the connecting plate (7) and is fixedly connected to a first gear (10). One end of the first gear (10) is meshed with a first gear ring (9). The inner side of the first gear ring (9) is fixedly connected to a connecting sleeve (11). The inner side of the connecting sleeve (11) is rotatably connected to a support block (16). The support block (16) is fixedly connected to the connecting plate (7).

6. A testing fixture according to claim 5, characterized in that, Four telescopic rods (17) are evenly and fixedly connected to the outer periphery of the top of the connecting sleeve (11). The ends of the four telescopic rods (17) that are far apart from each other are fixedly connected to a drive gear rack (18). Springs (24) are slidably connected to the outer sides of the four telescopic rods (17). The ends of the four springs (24) that are far apart from each other are fixedly connected to the corresponding drive gear rack (18). The ends of the four springs (24) that are close to each other are fixedly connected to the top of the connecting sleeve (11). The ends of the four clamping racks (4) that are close to each other are fixedly connected to a connecting frame (15). The inner sides of the four connecting frames (15) are rotatably connected to clamping wheels (12). The bottoms of the four clamping wheels (12) penetrate the corresponding connecting frame (15) and are fixedly connected to a fourth gear (23). The bottoms of the four fourth gears (23) are respectively meshed with the tops of the corresponding drive gear racks (18).

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