Universal convenient fixture for circular optical element and clamping method of universal convenient fixture

Abstract

The invention relates to the technical field of optical element clamping, in particular to a universal convenient clamp for a circular optical element and a clamping method thereof.The clamp comprises a mounting plate, a driving guide mechanism and a clamping mechanism, and the driving guide mechanism comprises a sliding rail, an elastic piece and a balance weight cavity; the slide rail is movably arranged on the mounting plate, and the top of the slide rail is used for supporting an optical element; the counterweight cavity is used for accommodating a counterweight to provide a downward driving force; the elastic piece is used for providing elastic force enabling the sliding rail to reset upwards. The clamping mechanism comprises a first clamping arm and a second clamping arm which are rotatably arranged on the mounting plate, and the first clamping arm and the second clamping arm are matched with the sliding rail. The clamp has the advantages that the first cam and the second cam are matched with the two inclined guide side faces of the triangular body, the first clamping arm and the second clamping arm are driven to be opened and closed through downward driving force of the weights, complex driving structures such as an electric structure, a hydraulic structure or a pneumatic structure are not needed, and the cost and maintenance difficulty of the clamp are reduced.

Description

Technical Field

[0001] This invention relates to the field of optical element clamping technology, and in particular to a universal and convenient clamping device for circular optical elements and its clamping method. Background Technology

[0002] With the deepening development of industrial production and scientific research, interferometer measurement technology has placed higher demands on the accuracy, efficiency, and portability of its core component, the measuring fixture. The core function of the fixture is to stably fix the workpiece and ensure its accurate position and orientation during the measurement process. Any displacement or deformation caused by improper clamping will directly lead to measurement errors.

[0003] Currently, the traditional clamps widely used in the field of interferometric measurement are mostly four-jaw or multi-jaw multi-point clamping structures. Although this type of design aims to achieve stable clamping through multi-point contact, it has inherent drawbacks due to the large number of jaws and the complexity of the structure: First, it results in a large clamping volume, which is not conducive to portability and application; second, it is difficult to adjust the multiple jaws synchronously, which can easily cause uneven force application to each jaw, resulting in slight displacement or deformation of the workpiece during measurement, thus seriously affecting the final measurement accuracy. Summary of the Invention

[0004] Based on this, the present invention proposes a universal and convenient clamping fixture and clamping method for circular optical elements. Through the synergistic action of the drive guiding mechanism and the clamping mechanism, stable clamping of the optical element is achieved. Its structure is simple, using the gravity of the weights and the restoring force of the elastic element to drive the opening and closing of the clamping arm, eliminating the need for complex drive systems such as electric, hydraulic or pneumatic systems, which not only effectively reduces costs but also facilitates maintenance.

[0005] To achieve the above objectives, the technical solution of this invention is implemented as follows: A universal and convenient clamp for circular optical elements, comprising: a mounting plate; a drive guiding mechanism, the drive guiding mechanism including a slide rail, an elastic element, and a counterweight cavity; the slide rail is movably disposed on the mounting plate, the top of the slide rail being used to support the optical element; the counterweight cavity is connected to the bottom of the slide rail, used to accommodate a counterweight to provide a downward driving force; the elastic element is connected between the mounting plate and the slide rail, used to provide an elastic force to reset the slide rail upward; a clamping mechanism, the clamping mechanism including a first clamping arm and a second clamping arm rotatably disposed on the mounting plate, the first clamping arm and the second clamping arm cooperating with the slide rail; when the slide rail moves downward, the drive guiding mechanism drives the first clamping arm and the second clamping arm to rotate in opposite directions to clamp the optical element; when the slide rail moves upward, the drive guiding mechanism drives the first clamping arm and the second clamping arm to rotate in opposite directions to release the optical element.

[0006] Furthermore, the mounting plate is provided with a first connecting post, a second connecting post, a first sliding groove, a second sliding groove, and a first mounting post; the first connecting post and the second connecting post are symmetrically arranged along the axis of the mounting plate; a first clamping arm is rotatably connected to the first connecting post, and a second clamping arm is rotatably connected to the second connecting post; the first sliding groove and the second sliding groove are symmetrically arranged along the axis of the mounting plate; the first mounting post is located on the axis of the mounting plate.

[0007] Furthermore, the mounting plate is also provided with a first limiting post and a second limiting post; the first limiting post and the second limiting post are symmetrically arranged along the axis of the mounting plate and are located on both sides of the upper part of the mounting plate, respectively, to limit the maximum opening angle of the first clamping arm and the second clamping arm.

[0008] Furthermore, the slide rail includes: a triangular body having a horizontal top surface and two inclined guide sides located below the top surface; a support rod adjustablely connected to the top surface of the triangular body for supporting optical components; a first sliding shaft and a second sliding shaft disposed on the side of the triangular body facing the mounting plate and respectively slidingly engaging with a first sliding groove and a second sliding groove disposed on the mounting plate.

[0009] Furthermore, the triangular body is provided with an elongated groove extending in the vertical direction, which slides in conjunction with the first mounting post; a second mounting post is provided on the side of the triangular body away from the mounting plate; one end of the elastic element is connected to the first mounting post, and the other end of the elastic element is connected to the second mounting post.

[0010] Furthermore, the support rod includes a support block and a screw connected to the support block. The support block is provided with a V-groove for supporting optical components. The top surface of the triangular body is provided with a threaded hole, and the screw is screwed into the threaded hole. The height of the support rod can be adjusted by adjusting the screw's screwing depth.

[0011] Furthermore, the first clamping arm and the second clamping arm have the same structure and are arranged opposite to each other; the first clamping arm includes a first rotating arm, a second rotating arm, a third rotating arm, a first cam, and a first roller; the two ends of the second rotating arm are respectively connected to the first rotating arm and the third rotating arm, so that the first clamping arm has a C-shaped structure; the first cam is disposed at the end of the first rotating arm, and the first roller is rotatably disposed at the end of the third rotating arm; a first connecting hole is provided on the second rotating arm, and the first clamping arm is rotatably fitted onto the first connecting post through the first connecting hole.

[0012] Furthermore, the second clamping arm includes a fourth rotating arm, a fifth rotating arm, a sixth rotating arm, a second cam, and a second roller; the two ends of the fifth rotating arm are respectively connected to the fourth rotating arm and the sixth rotating arm, so that the second clamping arm has a C-shaped structure; the second cam is disposed at the end of the fourth rotating arm, and the second roller is rotatably disposed at the end of the sixth rotating arm; a second connecting hole is provided on the fifth rotating arm, and the second clamping arm is rotatably fitted onto the second connecting post through the second connecting hole.

[0013] Furthermore, the first and second rollers are made of polytetrafluoroethylene.

[0014] A method for clamping an optical element, utilizing the aforementioned universal and convenient clamp for circular optical elements, includes the following steps: S1: Remove all or reduce the weights in the counterweight chamber to the lightest level, and under the action of the elastic element, open the first clamping arm and the second clamping arm. S2: Place the optical element on top of the slide rail; S3: According to the weight of the optical element, a weight is inserted into the counterweight cavity, causing the slide rail to move downward, which in turn drives the first clamping arm and the second clamping arm to rotate in opposite directions, clamping the optical element.

[0015] The invention can achieve the following beneficial effects: the universal and convenient clamp cooperates with the first cam, the second cam and the two inclined guide sides of the triangular body, and uses the downward driving force of the weight to drive the opening and closing of the first clamping arm and the second clamping arm, without the need for complex drive structures such as electric, hydraulic or pneumatic, thus reducing the cost and maintenance difficulty of the clamp.

[0016] By cooperating with the first and second cams and the two inclined guide sides of the triangular body, the driving force is transmitted evenly and stably to the first and second clamping arms, ensuring that the clamping force applied to the optical element by the first and second clamping arms is always balanced during the opening and closing process, thereby effectively improving the stability of the optical element during the measurement process and ensuring measurement accuracy.

[0017] By using the first and second rollers to clamp the optical elements on the V-groove, the problem of synchronous adjustment of multi-point clamping is avoided, fundamentally reducing the risk of displacement and deformation of the optical elements. Attached Figure Description

[0018] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the structure of a universal and convenient clamp for circular optical elements according to an embodiment of the present invention, in the state of clamping an optical element of a certain size; Figure 2It is provided according to the embodiments of the present invention. Figure 1 A schematic diagram of the structure of a universal and convenient clamp for a circular optical element in the released state; Figure 3 This is a schematic diagram of the structure of a universal and convenient clamp for a circular optical element provided according to an embodiment of the present invention, in the state of clamping an optical element of another size; Figure 4 This is a schematic diagram of the structure of the mounting plate provided according to an embodiment of the present invention; Figure 5 This is a first-view structural schematic diagram of the drive guide mechanism provided according to an embodiment of the present invention; Figure 6 This is a structural schematic diagram of the drive guide mechanism provided in an embodiment of the present invention from a second perspective; Figure 7 This is a schematic diagram of the support rod provided according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the first clamping arm provided according to an embodiment of the present invention.

[0019] The reference numerals in the accompanying drawings include: 1. Mounting plate; 11. First connecting post; 12. Second connecting post; 13. First slide groove; 14. Second slide groove; 15. First mounting post; 16. First limiting post; 17. Second limiting post; 2. Drive guide mechanism; 21. Slide rail; 211. Triangular body; 2111. Elongated groove; 212. Support rod; 2121. Support block; 2122. Screw; 213. First sliding shaft; 214. Second sliding shaft; 215. Second mounting post; 22. Elastic element; 23. Counterweight cavity; 3. Clamping mechanism; 31. First clamping arm; 311. First rotating arm; 312. Second rotating arm; 313. Third rotating arm; 314. First cam; 315. First roller; 316. First connecting hole; 32. Second clamping arm; 4. Optical element. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not constitute a limitation thereof.

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] The invention will now be described in detail with reference to specific embodiments.

[0025] like Figures 1 to 8 As shown in the figure, an embodiment of the present invention provides a universal and convenient clamp for a circular optical element, comprising: a mounting plate 1, a drive and guide mechanism 2, and a clamping mechanism 3.

[0026] The drive guide mechanism 2 includes a slide rail 21, an elastic element 22, and a counterweight cavity 23. The slide rail 21 is movably mounted on the mounting plate 1, and its top supports the optical element 4. The counterweight cavity 23 is connected to the bottom of the slide rail 21 and accommodates a counterweight to provide a downward driving force. The elastic element 22 is connected between the mounting plate 1 and the slide rail 21 and provides an elastic force to return the slide rail 21 to its upward position. The clamping mechanism 3 includes a first clamping arm 31 and a second clamping arm 32 rotatably mounted on the mounting plate 1, which are adapted to the slide rail 21. When the slide rail 21 moves downward, the drive guide mechanism 2 drives the first clamping arm 31 and the second clamping arm 32 to rotate in opposite directions to clamp the optical element 4. When the slide rail 21 moves upward, the drive guide mechanism 2 drives the first clamping arm 31 and the second clamping arm 32 to rotate in opposite directions to release the optical element 4. In this embodiment, the optical element 4 is a circular glass component.

[0027] Specifically, the mounting plate 1 is provided with a first connecting post 11, a second connecting post 12, a first sliding groove 13, a second sliding groove 14, a first mounting post 15, a first limiting post 16, and a second limiting post 17. The first connecting post 11 and the second connecting post 12 are symmetrically arranged along the axis of the mounting plate 1. The first sliding groove 13 and the second sliding groove 14 are symmetrically arranged along the axis of the mounting plate 1. The first mounting post 15 is located on the axis of the mounting plate 1. The first limiting post 16 and the second limiting post 17 are symmetrically arranged along the axis of the mounting plate 1 and are located on both sides of the upper part of the mounting plate 1, respectively, to limit the maximum opening angle of the first clamping arm 31 and the second clamping arm 32.

[0028] The slide rail 21 includes a triangular body 211, a support rod 212, a first sliding shaft 213, a second sliding shaft 214, and a second mounting post 215. The triangular body 211 has a horizontal top surface and two inclined guide sides located below the top surface. A threaded hole is provided on the top surface of the triangular body 211. The first sliding shaft 213 and the second sliding shaft 214 are located on the side of the triangular body 211 facing the mounting plate 1. The first sliding shaft 213 and the second sliding shaft 214 are slidably engaged with the first sliding groove 13 and the second sliding groove 14 on the mounting plate 1, respectively. Through the engagement of the two sliding grooves and the two sliding shafts, the triangular body 211 can slide along the axial direction of the mounting plate 1.

[0029] A vertically extending elongated groove 2111 is provided in the middle of the triangular main body 211, and the elongated groove 2111 slides in fit with the first mounting post 15. Specifically, the elongated groove 2111 is fitted onto the outside of the first mounting post 15, and a gap is left between the elongated groove 2111 and the first mounting post 15, so that the slide rail 21 can move vertically along the first mounting post 15.

[0030] The second mounting post 215 is located on the side of the triangular body 211 facing away from the mounting plate 1. The second mounting post 215 is located below the elongated groove 2111. One end of the elastic element 22 is connected to the first mounting post 15, and the other end of the elastic element 22 is connected to the second mounting post 215.

[0031] The support rod 212 is adjustablely connected to the top surface of the triangular body and is used to support the optical element 4. The support rod 212 includes a support block 2121 and a screw 2122 connected to the support block 2121. The support block 2121 is provided with a V-shaped groove for supporting the optical element 4. The surface of the V-shaped groove is provided with a polytetrafluoroethylene layer to prevent the optical element 4 from being scratched.

[0032] The screw 2122 is screwed into the threaded hole. By adjusting the screw depth of the screw 2122, the height of the support rod 212 can be adjusted. By adjusting the height of the support rod 212, it can accommodate optical elements 4 of different diameters.

[0033] When the slide rail 21 moves to its lowest position under the drive of the weights, the distance between the first mounting post 15 and the second mounting post 215 is at its maximum, and the elastic element 22 is stretched. When the slide rail 21 moves to its highest position under the restoring force of the elastic element 22, the distance between the first mounting post 15 and the second mounting post 215 is at its minimum, and the elastic element 22 returns to its natural length.

[0034] The elastic element 22 uses a helical spring to provide a stable elastic restoring force for the clamp, and utilizes the spring's own buffering performance to effectively reduce the impact and vibration during the movement of the slide rail 21.

[0035] The first clamping arm 31 and the second clamping arm 32 have the same structure and are arranged opposite to each other. The first clamping arm includes a first rotating arm 311, a second rotating arm 312, a third rotating arm 313, a first cam 314, and a first roller 315. The two ends of the second rotating arm 312 are respectively connected to the first rotating arm 311 and the third rotating arm 313, making the first clamping arm 31 have a C-shaped structure. The first cam 314 is disposed at the end of the first rotating arm 311 and is used to cooperate with the guide side corresponding to the triangular body 211. The first roller 315 is rotatably disposed at the end of the third rotating arm 313. A first connecting hole 316 is provided on the second rotating arm 312, and the first clamping arm 31 is rotatably fitted onto the first connecting post 11 through the first connecting hole 316.

[0036] Two spaced-apart second connecting ears extend from the end of the third rotating arm 313 along its axial direction, and the first roller 315 is rotatably connected between the two second connecting ears via a second rotating shaft.

[0037] In this embodiment, the first rotating arm 311 and the second rotating arm 312 are connected at an angle, and the connection between the second rotating arm 312 and the third rotating arm 313 is a rounded transition.

[0038] The second clamping arm 32 includes a fourth rotating arm, a fifth rotating arm, a sixth rotating arm, a second cam, and a second roller. The two ends of the fifth rotating arm are connected to the fourth and sixth rotating arms respectively, giving the second clamping arm 32 a C-shaped structure. The second cam is located at the end of the fourth rotating arm and is used to engage with the guide side corresponding to the triangular main body 211. The second roller is rotatably mounted at the end of the sixth rotating arm. A second connecting hole is provided on the fifth rotating arm, through which the second clamping arm 32 is rotatably fitted onto the second connecting post 12. The connection method of the second roller is the same as that of the second connecting post, and will not be described in detail here.

[0039] In this embodiment, the first roller 315 and the second roller are made of polytetrafluoroethylene, which provides flexible protection for the optical element 4 and prevents its surface from being scratched during clamping.

[0040] Both the first cam 314 and the second cam have elliptical structures. The axis of the first rotating arm 311 is set at an angle to the minor axis of the first cam 314, and the axis of the fourth rotating arm is set at an angle to the minor axis of the second cam. When the first cam 314 and the second cam rotate around their axes, causing their elliptical surfaces to move to the end position along the major axis, the first clamping arm 31 and the second clamping arm 32 contact the first limiting post 16 and the second limiting post 17, thereby limiting the opening angle.

[0041] The lengths of the first clamping arm 31 and the second clamping arm 32, along with the height adjustment range of the support rod 212, together define the diameter range of the optical element 4 that the universal convenient clamp can accommodate. The first clamping arm 31, the second clamping arm 32, and the support rod 212 are all designed to be detachable, so that different models of optical elements 4 can be accommodated by replacing these components.

[0042] A method for clamping an optical element, utilizing the aforementioned universal and convenient clamp for circular optical elements, includes the following steps: S1: Remove all or reduce the weights in the counterweight cavity 23 to the lightest level, and under the action of the elastic element 22, open the first clamping arm 31 and the second clamping arm 32.

[0043] Specifically, based on the size and shape of the optical element 4 to be tested, a matching first clamping arm 31, a second clamping arm 32, and a support rod 212 are selected and installed. The first clamping arm 31 and the second clamping arm 32 are respectively connected to the corresponding first connecting post 11 and second connecting post 12.

[0044] Empty the weights from the counterweight cavity 23. At this time, under the elastic force of the elastic element 22, the slide rail 21 moves upward, driving the first clamping arm 31 and the second clamping arm 32 to rotate in opposite directions to the maximum opening angle.

[0045] S2: Place the optical element 4 on the V-groove of the support rod 212; S3: Based on the weight of the optical element 4, a weight is inserted into the counterweight cavity 23, causing the slide rail 21 to move downwards, which in turn drives the first clamping arm 31 and the second clamping arm 32 to rotate in opposite directions, clamping the optical element 4. After stable clamping, interferometer testing is performed.

[0046] It should be noted that, in order to reliably clamp the optical element 4, the weight of the weight is usually not less than the weight of the optical element 4. It can be understood that the key to the weight of the weight is that it can provide enough force to drive the slide rail 21 downward and enable the first clamping arm 31 and the second clamping arm 32 to complete the clamping action.

[0047] Specifically, when the slide rail 21 moves downward, the first cam 314 of the first clamping arm 31 and the second cam of the second clamping arm 32 slide along the guide sides of the triangular body 211, thereby causing the first clamping arm 31 and the second clamping arm 32 to rotate in opposite directions, so that the first roller 315 and the second roller simultaneously clamp the optical element 4. When the slide rail 21 moves upward, the first cam 314 of the first clamping arm 31 and the second cam of the second clamping arm 32 slide in opposite directions along the guide sides of the triangular body 211, thereby causing the first clamping arm 31 and the second clamping arm 32 to rotate in opposite directions, so that the first roller 315 and the second roller release the clamping of the optical element 4.

[0048] By using the first roller 315 and the second roller to clamp the optical element on the V-groove, the problem of synchronous adjustment of multi-point clamping is avoided, fundamentally reducing the risk of displacement and deformation of the optical element 4.

[0049] In some implementations, a universal, convenient clamp is mounted on a multi-dimensional adjustment stage. Once the optical element 4 is stably held in the clamp, the multi-dimensional adjustment stage can be operated to precisely adjust the forward / backward, left / right, and tilt angles of the optical element 4, completing the pose calibration. After it reaches the optimal working pose for interferometer measurement, the interferometer can be started to perform the detection work.

[0050] In summary, the universal and convenient clamping device and its clamping method for circular optical elements of the present invention have the following advantages: The universal and convenient clamp uses the first cam 314 and the second cam to cooperate with the two inclined guide sides of the triangular body 211. It uses the downward driving force of the weight to drive the first clamping arm 31 and the second clamping arm 32 to open and close, eliminating the need for complex drive structures such as electric, hydraulic or pneumatic, thus reducing the cost and maintenance difficulty of the clamp.

[0051] Meanwhile, by cooperating with the first cam 314 and the second cam with the two inclined guide sides of the triangular body 211, the driving force is transmitted evenly and stably to the first clamping arm 31 and the second clamping arm 32, ensuring that the clamping force applied to the optical element 4 by the first clamping arm 31 and the second clamping arm 32 is always balanced during the opening and closing process, thereby effectively improving the stability of the optical element 4 during the measurement process and ensuring measurement accuracy.

[0052] Furthermore, the clamping of the optical element on the V-groove by the first roller 315 and the second roller avoids the problem of synchronous adjustment of multi-point clamping, fundamentally reducing the risk of displacement and deformation of the optical element 4. The first roller 315 and the second roller are made of polytetrafluoroethylene (PTFE), and the surface of the support block 2121 is provided with a PTFE layer, providing flexible protection for the optical element 4 and preventing its surface from being scratched during clamping.

[0053] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A universal and convenient clamp for circular optical elements, characterized in that, include: Mounting plate; A drive guide mechanism, the drive guide mechanism including a slide rail, an elastic element and a counterweight cavity; The slide rail is movably mounted on the mounting plate, with its top supporting optical elements; the counterweight cavity is connected to the bottom of the slide rail and is used to accommodate counterweights to provide a downward driving force; the elastic element is connected between the mounting plate and the slide rail and is used to provide an elastic force that returns the slide rail to its upward position. A clamping mechanism, comprising a first clamping arm and a second clamping arm rotatably mounted on the mounting plate, wherein the first clamping arm and the second clamping arm are adapted to the slide rail; When the slide rail moves downward, the drive guide mechanism drives the first clamping arm and the second clamping arm to rotate in opposite directions to clamp the optical element; When the slide rail moves upward, the drive guide mechanism drives the first clamping arm and the second clamping arm to rotate in opposite directions to release the optical element.

2. The universal and convenient clamp for circular optical elements according to claim 1, characterized in that, The mounting plate is provided with a first connecting post, a second connecting post, a first sliding groove, a second sliding groove, and a first mounting post; The first connecting post and the second connecting post are symmetrically arranged along the axis of the mounting plate; the first clamping arm is rotatably connected to the first connecting post, and the second clamping arm is rotatably connected to the second connecting post; The first slide groove and the second slide groove are symmetrically arranged along the axis of the mounting plate; The first mounting post is located on the axis of the mounting plate.

3. The universal and convenient clamp for circular optical elements according to claim 2, characterized in that, The mounting plate is also provided with a first limiting post and a second limiting post; the first limiting post and the second limiting post are symmetrically arranged along the axis of the mounting plate and are respectively located on both sides of the upper part of the mounting plate, for limiting the maximum opening angle of the first clamping arm and the second clamping arm.

4. The universal and convenient clamp for circular optical elements according to claim 2, characterized in that, The slide rail includes: A triangular body having a horizontal top surface and two inclined guide sides located below the top surface; A support rod, which is adjustablely connected to the top surface of the triangular body, is used to support the optical element; The first sliding shaft and the second sliding shaft are disposed on the side of the triangular body facing the mounting plate, and respectively slide in cooperation with the first sliding groove and the second sliding groove provided on the mounting plate.

5. The universal and convenient clamp for circular optical elements according to claim 4, characterized in that, The triangular body is provided with an elongated groove extending in the vertical direction, and the elongated groove is slidably engaged with the first mounting post; A second mounting post is provided on the side of the triangular main body away from the mounting plate; one end of the elastic element is connected to the first mounting post, and the other end of the elastic element is connected to the second mounting post.

6. The universal and convenient clamp for circular optical elements according to claim 4, characterized in that, The support rod includes a support block and a screw connected to the support block, and the support block is provided with a V-shaped groove for supporting the optical element; The top surface of the triangular main body is provided with a threaded hole, and the screw is screwed into the threaded hole. The height of the support rod can be adjusted by adjusting the screw's screwing depth.

7. The universal and convenient clamp for circular optical elements according to claim 2, characterized in that, The first clamping arm and the second clamping arm have the same structure and are arranged opposite to each other; the first clamping arm includes a first rotating arm, a second rotating arm, a third rotating arm, a first cam, and a first roller; The two ends of the second rotating arm are respectively connected to the first rotating arm and the third rotating arm, so that the first clamping arm has a C-shaped structure; The first cam is disposed at the end of the first rotating arm and abuts against the guide side of the slide rail on the corresponding side; the first roller is rotatably disposed at the end of the third rotating arm; The second rotating arm has a first connecting hole, and the first clamping arm is rotatably fitted onto the first connecting post through the first connecting hole.

8. The universal and convenient clamp for circular optical elements according to claim 7, characterized in that, The second clamping arm includes a fourth rotating arm, a fifth rotating arm, a sixth rotating arm, a second cam, and a second roller; The two ends of the fifth rotating arm are respectively connected to the fourth rotating arm and the sixth rotating arm, so that the second clamping arm has a C-shaped structure; The second cam is disposed at the end of the fourth rotating arm and abuts against the guide side of the slide rail on the corresponding side; the second roller is rotatably disposed at the end of the sixth rotating arm; The fifth rotating arm has a second connecting hole, and the second clamping arm is rotatably fitted onto the second connecting post through the second connecting hole.

9. The universal and convenient clamp for circular optical elements according to claim 8, characterized in that, The first roller and the second roller are made of polytetrafluoroethylene.

10. A method for clamping an optical element, implemented using a universal and convenient clamp for a circular optical element as described in any one of claims 1-9, characterized in that, Includes the following steps: S1: Remove all the weights in the counterweight cavity, and under the action of the elastic element, open the first clamping arm and the second clamping arm; S2: Place the optical element on top of the slide rail; S3: According to the weight of the optical element, a weight is inserted into the counterweight cavity, causing the slide rail to move downward, thereby driving the first clamping arm and the second clamping arm to rotate in opposite directions and clamp the optical element.

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