Lens polishing clamp

Abstract

The utility model discloses a lens polishing clamp, and relates to the field of optical machining. Through the unique design of the outer clamping jaw and the inner clamping jaw, the circular clamping groove and the rectangular clamping groove are adopted, cylindrical and rectangular cylindrical lenses can be stably clamped, the limitation that a traditional clamp is only suitable for clamping cylindrical lenses is overcome, the application range of the clamp is widened, the polishing requirements of lenses of different shapes in optical machining are met, and the polishing efficiency is improved. Through the ingenious design of a connecting mechanism, the inner clamping jaw can be easily disassembled by pressing a pressing rod, only a butt joint rod needs to be inserted during installation, positioning and locking are automatically completed through a limiting block and a spring, operation is easy and convenient, the replacement time of the clamp is greatly shortened, and the production efficiency is improved; and the labor intensity of operators is reduced.

Description

Technical Field

[0001] This utility model relates to the field of optical processing, specifically to a lens polishing fixture. Background Technology

[0002] In the field of optical cold processing, grinding and polishing are crucial processing steps. When processing tiny cylindrical lenses, such as the axially transparent plano-convex lens Clens widely used in the optical communication industry, it is necessary to clamp the tiny cylindrical lens particles on a special grinding fixture for end face grinding and polishing.

[0003] Traditional clamps use a locking sleeve and a positioning seat structure to lock glass, such as the polishing clamp and clamping system described in Chinese Patent Publication No. CN212947259U. The polishing clamp includes a positioning seat, a locking sleeve, a clamping member, and an elastic compression member. The locking sleeve has a communicating conical groove and a receiving groove along its axial direction. The positioning seat is fitted onto the locking sleeve and located within the receiving groove. The clamping member passes through the locking sleeve, with one end connected to the positioning seat and the other end extending to have at least two claws, which engage with the conical groove. The elastic compression member is located in the receiving groove, with both ends pressing against the first end of the positioning seat along its axial direction and the bottom of the receiving groove, respectively. The elastic compression member is configured to allow the inner wall of the conical groove to press against the claws, bringing the at least two claws closer together to clamp the lens. The locking sleeve and the clamping member together enable rapid clamping of the polishing clamp, improving clamping efficiency. The clamping system includes a pressing component and multiple polishing fixtures as described above, enabling automated and batch operation of the clamping system.

[0004] However, the polishing fixtures mentioned above are mainly designed for clamping cylindrical lens particles. When clamping square prism lens particles, the main method is to place four sharp prisms in the cross slot to prevent them from being crushed by the jaws. However, the inner side of the jaws and the cylindrical surface of the square lens are actually in line contact with eight lines, and the lens is very easy to be crushed. To overcome the shortcomings of the existing technology, it is urgent to improve the existing polishing fixtures. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a lens polishing fixture to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a lens polishing fixture, including a positioning seat and a locking sleeve. The top of the positioning seat is equipped with an outer jaw that cooperates with the locking sleeve, and the outer jaw has an inner jaw. Both the outer jaw and the inner jaw have clamping grooves, and the clamping grooves of the outer jaw and the inner jaw are used to clamp the lens. The outer wall of the inner jaw is in contact with the outer wall of the clamping groove, and both the inner jaw and the outer jaw have cross slots.

[0007] The outer and inner grippers have circular and rectangular groove cross-sections, respectively, and are used to hold cylindrical and rectangular cylindrical lenses, respectively.

[0008] The inner gripper is connected to the outer gripper via a connecting mechanism.

[0009] By adopting the above technical solution, and through the unique design of the outer and inner jaws, using circular and rectangular clamping grooves respectively, cylindrical and rectangular cylindrical lenses can be stably clamped. This solves the limitation of traditional clamps that are only suitable for clamping cylindrical lenses, expands the applicability of the clamps, meets the polishing needs of lenses of different shapes in optical processing, and improves the versatility and practicality of the clamps.

[0010] Furthermore, the outer claw has an isosceles trapezoidal cross-section, and the outer wall of the outer claw is in contact with the inner wall of the opening of the locking sleeve, and the maximum diameter of the outer claw is smaller than the maximum diameter of the locking sleeve.

[0011] By adopting the above technical solution, it is ensured that the locking sleeve can smoothly control the clamping and releasing of the outer jaws during the movement process.

[0012] Furthermore, the connecting mechanism includes a docking rod fixedly installed at the bottom of the inner gripper, and the positioning seat has a docking hole corresponding to the docking rod, and an elastic element that contacts the docking rod is installed in the docking hole.

[0013] By adopting the above technical solution, the connection between the inner and outer grippers can be released, thereby ensuring that the fixture can be adapted to clamp various lenses.

[0014] Furthermore, the connecting mechanism also includes a limiting block slidably installed in the positioning seat to limit the docking rod, and a spring installed in the positioning seat and connected to the limiting block. The outer wall of the docking rod is provided with a limiting groove corresponding to the limiting block, and the top corner of the limiting block is designed with an angle.

[0015] By adopting the above technical solution, it is ensured that the position of the connecting rod can be smoothly fixed after it is installed into the connecting hole.

[0016] Furthermore, a pressure plate for pushing the limiting block out of the limiting groove is slidably installed inside the docking rod, and the bottom corner of the pressure plate is designed with an oblique angle corresponding to the corner of the limiting block, and the end of the pressure plate does not protrude out of the limiting groove.

[0017] By adopting the above technical solution, it is ensured that when it is necessary to remove the connecting rod, the restriction of the connecting rod by the limiting block can be smoothly released.

[0018] Furthermore, a pressure rod that is fixedly connected to the pressure plate is slidably installed in the middle of the docking rod, and the top of the pressure rod is in contact with the bottom surface of the inner clamping claw, and a spring II connected to the docking rod is installed in the middle of the pressure rod.

[0019] By adopting the above technical solution, pressing the pressure rod can give the pressure plate the power to slide, while the second spring ensures that the pressure rod can be smoothly reset after being pressed down.

[0020] In summary, the present invention has the following main advantages:

[0021] This invention, through its unique external and internal clamping jaw design, employs circular and rectangular clamping grooves respectively, enabling stable clamping of cylindrical and rectangular cylindrical lenses. This overcomes the limitation of traditional clamps being only suitable for cylindrical lenses, expanding the clamp's applicability and meeting the polishing needs of lenses of different shapes in optical processing. It improves the clamp's versatility and practicality. Through the ingenious design of the connecting mechanism, the internal clamping jaws can be easily disassembled by pressing the pressure rod. During installation, simply insert the docking rod; the limiting block and spring automatically complete the positioning and locking process. The operation is simple and convenient, greatly shortening the clamp changeover time, improving production efficiency, and reducing the labor intensity of operators. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a side-section view of the structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the component of this utility model after an explosion;

[0025] Figure 4 This is a schematic diagram of the structure of the inner gripper and the connecting rod after being cut open.

[0026] Figure 5 This is a top-section structural diagram of the positioning seat and connecting rod of this utility model.

[0027] In the diagram: 1. Positioning seat; 10. Outer jaw; 101. Grip groove; 11. Inner jaw; 12. Cross slot; 2. Locking sleeve; 3. Connecting rod; 30. Connecting hole; 31. Limiting block; 32. Limiting groove; 33. Spring 1; 34. Pressure plate; 35. Pressure rod; 36. Spring 2. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0029] This utility model focuses on the improvement of lens polishing fixtures in the field of optical processing, aiming to solve the problem that traditional fixtures are difficult to stably clamp square cylindrical lenses. Through innovative structural design, it achieves efficient and stable clamping of cylindrical and rectangular cylindrical lenses, thereby improving the quality and efficiency of polishing processing.

[0030] The embodiments of this utility model will be described below based on its overall structure;

[0031] Lens polishing fixtures, such as Figure 1 - Figure 5 As shown, it mainly consists of a positioning seat 1, a locking sleeve 2, an outer clamping jaw 10, an inner clamping jaw 11, and a connecting mechanism.

[0032] The positioning base 1 serves as a basic support component, providing an installation platform for other parts. The locking sleeve 2 cooperates with the positioning base 1 and rotates to achieve the clamping or loosening operation of the gripper. The outer gripper 10 is installed on the top of the positioning base 1 and works in conjunction with the locking sleeve 2 to achieve the initial clamping of the lens. The inner gripper 11 is connected to the outer gripper 10 through a connecting mechanism and is used to clamp rectangular cylindrical lenses. Together with the outer gripper 10, they form a complete clamping system to meet the clamping requirements of lenses of different shapes.

[0033] Specifically, the outer jaw 10 has an isosceles trapezoidal cross-section, with its outer wall touching the inner wall of the opening of the locking sleeve 2, and its maximum diameter being smaller than the maximum diameter of the locking sleeve 2. This design allows the locking sleeve 2 to apply inward pressure evenly to the outer jaw 10 when it moves downward, causing the outer jaw 10 to undergo elastic deformation, thereby clamping the lens.

[0034] Meanwhile, an inner clamping jaw 11 is provided inside the outer clamping jaw 10. Both are provided with clamping grooves 101. The clamping groove 101 of the outer clamping jaw 10 has a circular cross-section, which is suitable for clamping cylindrical lenses. It can fit tightly with the outer surface of the cylindrical lens, providing stable support and clamping force. The clamping groove 101 of the inner clamping jaw 11 has a rectangular cross-section, which is specifically used for clamping rectangular cylindrical lenses. It can fit well with the cylindrical surface of the rectangular lens, avoiding shaking or displacement of the lens during clamping and polishing. Both the outer clamping jaw 10 and the inner clamping jaw 11 are provided with cross slots 12. The design of the cross slots 12 increases the elasticity of the jaws. When squeezed by the locking sleeve 2, the jaws can generate elastic deformation through the cross slots 12, better adapting to the shape of the lens, enhancing the clamping effect, and also effectively dispersing stress, reducing the risk of the lens being crushed.

[0035] Please see Figure 2 - Figure 5 The connecting mechanism includes a docking rod 3, a docking hole 30, a limiting block 31, a limiting groove 32, a spring 1 33, a pressure plate 34, a pressure rod 35, and a spring 2 36.

[0036] The connecting rod 3 is fixedly installed at the bottom of the inner gripper 11 and cooperates with the connecting hole 30 on the positioning seat 1 to achieve the initial connection between the inner gripper 11 and the positioning seat 1. An elastic element is installed in the connecting hole 30. When the connecting rod 3 is inserted, the elastic element is compressed and stores elastic force. When it is necessary to disassemble the inner gripper 11, the elastic element can provide an upward elastic force to assist the inner gripper 11 in disengaging from the positioning seat 1, making the disassembly process easier. The limiting block 31 is slidably installed in the positioning seat 1 and cooperates with the limiting groove 32 on the outer wall of the connecting rod 3 to limit the position of the connecting rod 3 and prevent the inner gripper 11 from accidentally falling off during use. The spring 33 is connected to the limiting block 31 and provides elastic force to the limiting block 31 so that it can always be kept in the position that cooperates with the limiting groove 32, ensuring the stability of the inner gripper 11 after installation.

[0037] Secondly, a pressure plate 34 is slidably installed inside the docking rod 3. The bottom corner of the pressure plate 34 is designed with a corresponding bevel angle to the corner of the limiting block 31. When it is necessary to disassemble the inner gripper 11, the pressure rod 35 is pressed down with a tool. The pressure rod 35 drives the pressure plate 34 to move down synchronously. The pressure plate 34 uses the bevel design to push the limiting block 31 to move outward against the elastic force of the first spring 33, so that the limiting block 31 is disengaged from the limiting groove 32, thereby releasing the restriction on the docking rod 3 and facilitating the disassembly of the inner gripper 11. The top of the pressure rod 35 is in contact with the bottom surface of the inner gripper 11, and a second spring 36 is installed in the middle. The second spring 36 plays the role of buffering and resetting. When the pressure rod 35 is pressed, the second spring 36 can relieve the pressure and avoid damage to the inner gripper 11. After the pressure rod 35 is released, the second spring 36 can make the pressure rod 35 and the pressure plate 34 automatically reset, preparing for the next operation.

[0038] The working principle of this utility model is as follows: When it is necessary to clamp a cylindrical lens, the cylindrical lens is placed into the clamping groove 101 of the outer clamp 10; the clamping groove 101 of the outer clamp 10 has a circular cross-section, which can fit the outer surface of the cylindrical lens well; then, the locking sleeve 2 is rotated. Because the locking sleeve 2 is threadedly connected to the outer wall of the positioning seat 1, and because the outer clamp 10 has an isosceles trapezoidal cross-section and its outer wall is in contact with the inner wall of the opening of the locking sleeve 2, as the locking sleeve 2 gradually moves downward, the locking sleeve 2 generates an inward squeezing force on the outer clamp 10; after being squeezed, the outer clamp 10 generates a certain elastic deformation through its own cross slot 12, which makes the diameter of the clamping groove 101 smaller, thereby tightly clamping the cylindrical lens;

[0039] When it is necessary to clamp a rectangular cylindrical lens, the inner clamp 11 is installed into the clamping groove 101 of the outer clamp 10, and then the rectangular cylindrical lens is placed into the clamping groove 101 of the inner clamp 11. The clamping groove 101 of the inner clamp 11 has a rectangular cross section, which can fit well with the cylindrical surface of the rectangular cylindrical lens. Then, the locking sleeve 2 is put on the outer clamp 10. Under the compression of the locking sleeve 2, the outer clamp 10 generates elastic deformation through the cross slot 12, further applying pressure to the inner clamp 11. While being subjected to the pressure of the outer clamp 10, the inner clamp 11 generates elastic deformation through its own cross slot 12, tightly clamping the rectangular cylindrical lens.

[0040] When it is necessary to remove the inner gripper 11, press down on the pressure rod 35 with a tool; as the pressure rod 35 moves downward, it drives the pressure plate 34 to move downward simultaneously; since the bottom corner of the pressure plate 34 and the corner of the limiting block 31 are designed to be at a corresponding angle, the pressure plate 34 will push the limiting block 31 to move outward against the elastic force of the spring 33 during the downward movement, so that the limiting block 31 is disengaged from the limiting groove 32. At this time, the inner gripper 11 can move relative to the positioning seat 1; at this time, the restriction of the inner gripper 11 is released and the inner gripper 11 can be removed.

[0041] When the inner clamp 11 needs to be installed, the bottom connecting rod 3 is inserted into the connecting hole 30. As the connecting rod 3 extends, the elastic element in the connecting hole 30 is compressed and begins to store elastic force, ensuring that the connecting rod 3 will move upward after the restriction is released. During the descent of the connecting rod 3, its bottom end will press against the inclined surface of the limiting block 31, forcing the limiting block 31 to slide towards the spring 33 until the connecting rod 3 slides to the state where the inner clamp 11 can no longer descend. At this time, the position of the limiting block 31 and the limiting groove 32 will correspond. Then the spring 33 will push the limiting block 31 into the limiting groove 32 to restrict the position of the connecting rod 3, making the disassembly and installation of the inner clamp 11 very convenient. Whether to install it can be decided according to the actual cylindrical mirror to be polished.

[0042] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A lens polishing fixture, characterized in that, The device includes a positioning base (1) and a locking sleeve (2). The top of the positioning base (1) is equipped with an outer clamping claw (10) that works with the locking sleeve (2). The outer clamping claw (10) has an inner clamping claw (11). Both the outer clamping claw (10) and the inner clamping claw (11) have clamping grooves (101). The clamping grooves (101) of the outer clamping claw (10) and the inner clamping claw (11) are used to clamp the lens. Both the inner clamping claw (11) and the outer clamping claw (10) have cross slots (12). The clamping grooves (101) of the outer clamping jaw (10) and the inner clamping jaw (11) are designed to be circular and rectangular respectively, and the outer clamping jaw (10) and the inner clamping jaw (11) are used to clamp cylindrical lenses and rectangular lenses respectively. The inner gripper (11) is connected to the outer gripper (10) through a connecting mechanism.

2. The lens polishing fixture according to claim 1, characterized in that: The outer claw (10) has an isosceles trapezoidal cross section, and the outer wall of the outer claw (10) is in contact with the inner wall of the opening of the locking sleeve (2), and the maximum diameter of the outer claw (10) is smaller than the maximum diameter of the locking sleeve (2).

3. The lens polishing fixture according to claim 1, characterized in that: The connecting mechanism includes a docking rod (3) fixedly installed at the bottom of the inner gripper (11), and a docking hole (30) corresponding to the docking rod (3) is provided on the positioning seat (1), and an elastic element that contacts the docking rod (3) is installed in the docking hole (30).

4. The lens polishing fixture according to claim 1, characterized in that: The connecting mechanism also includes a limiting block (31) that is slidably installed in the positioning seat (1) to limit the docking rod (3), and a spring (33) installed in the positioning seat (1) and connected to the limiting block (31). The outer wall of the docking rod (3) is provided with a limiting groove (32) corresponding to the limiting block (31), and the top corner of the limiting block (31) is designed with an angle.

5. The lens polishing fixture according to claim 4, characterized in that: The connecting rod (3) is slidably installed with a pressure plate (34) for pushing the limiting block (31) out of the limiting groove (32), and the bottom corner of the pressure plate (34) is designed with an oblique angle corresponding to the corner of the limiting block (31), and the end of the pressure plate (34) does not protrude from the limiting groove (32).

6. The lens polishing fixture according to claim 5, characterized in that: The middle part of the connecting rod (3) is slidably installed with a pressure rod (35) that is fixedly connected to the pressure plate (34), and the top of the pressure rod (35) is in contact with the bottom surface of the inner claw (11), and a spring (36) connected to the connecting rod (3) is installed in the middle part of the pressure rod (35).

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