Jade carving clamping device
By using axially symmetrical fixed clamps and movable clamps in the jade carving device, combined with retractable telescopic strips and elastic mechanisms, the problem of uneven clamping force is solved, stable fixation and surface protection of the jade are achieved, and the carving accuracy and efficiency are improved.
Patent Information
- Application Number
- CN202423114129.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-12-17
AI Technical Summary
The clamping force of existing jade carving clamping devices is unevenly distributed, causing the jade to be easily displaced or damaged during the carving process, limiting the carver's creativity and precision.
It adopts axisymmetric fixed clamp and movable clamp, combined with retractable telescopic strip and elastic mechanism, and is slidably connected to the operating table through a spiral screw to achieve uniform distribution of clamping force and reduce pressure on the jade surface through rubber pads.
It improves the stability and precision of jade carving, protects the integrity of the jade surface, and improves the efficiency and yield of carving.
Smart Images
Figure CN223370478U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of jade carving, and in particular relates to a jade carving clamping device. Background Art
[0002] Jade carving, a traditional craft with a long history, lies at the heart of transforming precious natural jade into ornaments and decorative pieces that combine artistic beauty with practical value through meticulous carving and polishing techniques. Jade, with its unique texture and vibrant, diverse colors, has been considered a precious natural resource since ancient times and widely used in the production of jewelry, ornaments, and seals. However, the exquisite craftsmanship of jade carving relies not only on the carver's profound artistic attainments and creative ideas, but also on sophisticated tools and equipment, as well as scientific processing technology.
[0003] The complex process of jade carving requires precise manipulation from multiple perspectives to ensure that every detail of the work is accurately rendered and achieves optimal artistic expression. Given the high value of jade and its inherent hardness, even the slightest mistake in the carving process can lead to irreversible damage and waste of resources, placing extremely stringent demands on the precision and stability of the carving process. Furthermore, to maintain the integrity of the jade surface, effective measures must be taken during the carving process to minimize defects such as scratches and cracks, thereby safeguarding the quality and value of the final work.
[0004] Most jade clamping devices currently in widespread use rely on traditional mechanical clamping mechanisms. These devices often struggle to achieve uniform clamping force distribution, increasing the risk of jade displacement or damage during carving. This technical limitation not only restricts the carver's flexibility and precision during the creative process, but also poses a certain constraint on the development of jade carving art. Therefore, exploring and developing new and efficient jade clamping technologies to overcome the shortcomings of existing devices is crucial to improving jade carving techniques. Utility Model Content
[0005] In view of this, the utility model provides a jade carving clamping device, which can solve the problem of uneven clamping force distribution of existing jade clamps and reduce the risk of jade displacement or damage during carving operations.
[0006] The utility model is achieved in this way:
[0007] The utility model provides a jade carving clamping device, which includes an operating table, a fixed clamp and a movable clamp. The operating table is a rectangular flat plate, and the fixed clamp and the movable clamp are symmetrically placed above the operating table. The fixed clamp is fixed to the surface of the operating table, and the movable clamp is slidably connected to the operating table. The adjacent surfaces of the fixed clamp and the movable clamp are provided with a retractable telescopic strip, and the retractable strip is used to fix jade. The end of the movable clamp away from the fixed clamp is slidably connected to the operating table through a moving mechanism, and the moving mechanism is fixedly connected to the operating table.
[0008] The technical effects of the jade carving clamping device provided by the utility model are as follows: by arranging an axially symmetrical fixed clamp and a movable clamp, the jade can be conveniently fixed; by arranging a retractable telescopic strip on the surfaces where the fixed clamp and the movable clamp are close to each other, the contact area between the jade and the clamp is increased, making the jade more firmly fixed and at the same time avoiding damage to the jade.
[0009] On the basis of the above technical solution, a jade carving clamping device of the present invention can also be improved as follows:
[0010] In which, the fixed clamp includes a telescopic bar, a fixed U-shaped block, an elastic mechanism and a cover plate, the fixed U-shaped block is U-shaped and fixed to the surface of the operating table, the opening direction of the fixed U-shaped block is toward the direction of the movable clamp, and a plurality of closely arranged telescopic bars are placed in the opening direction of the fixed U-shaped block, the height of the telescopic bar is equal to the height of the fixed U-shaped block, the telescopic bar is a rectangular parallelepiped structure, the position of the telescopic bar away from the movable clamp is movably connected by the elastic mechanism, the cover plate is fixedly connected to the top of the fixed U-shaped block, and the cover plate is a rectangular flat plate for covering the telescopic bar.
[0011] The beneficial effect of adopting the above-mentioned improvement scheme is that, by providing the elastic mechanism, the telescopic strip can be fixed according to the shape of the jade, thereby avoiding damage to the jade.
[0012] Furthermore, the movable clamp includes a telescopic bar, a movable U-shaped block, an elastic mechanism and a cover plate, the movable U-shaped block is U-shaped, and is slidably connected to the surface of the operating table, the opening direction of the movable U-shaped block is toward the direction of the fixed clamp, and the telescopic bar is placed with a plurality of closely arranged telescopic bars in the opening direction of the movable U-shaped block, the part of the movable U-shaped block away from the fixed clamp is rotatably connected to the movable mechanism, the height of the telescopic bar is equal to the height of the movable U-shaped block, the telescopic bar is a rectangular structure, and the position of the telescopic bar away from the movable clamp is movably connected through the elastic mechanism, the cover plate is fixedly connected to the top of the fixed U-shaped block, and the cover plate is a rectangular flat plate for covering the telescopic bar.
[0013] Furthermore, the moving mechanism includes a spiral screw and a fixed block, one end of the spiral screw is rotatably connected to the movable U-shaped block, the middle section of the spiral screw is provided with a thread, the fixed block is a block structure, and is fixedly connected to the upper surface of the operating table, a through hole is provided on the fixed block, the spiral screw passes through the inside of the through hole, and the through hole is provided with a thread corresponding to the thread of the spiral screw.
[0014] The beneficial effect of adopting the above-mentioned improvement scheme is: by providing a moving mechanism, the movement of the movable clamp is facilitated, so that the movable clamp and the fixed clamp cooperate to fix the jade.
[0015] Furthermore, the elastic mechanism is a plurality of springs, and the number of the springs is equal to a multiple of the number of the telescopic strips.
[0016] The beneficial effect of adopting the above-mentioned improvement scheme is that the spring is provided to facilitate the extension and retraction of the telescopic strip, thereby facilitating the telescopic strip to fix the jade according to the shape of the jade.
[0017] Furthermore, the elastic mechanism is small balls distributed all over the opening of the movable U-shaped block of the telescopic bar and the contact part with the fixed U-shaped block.
[0018] The beneficial effect of adopting the above-mentioned improvement scheme is: by setting the elastic mechanism as a small ball, when the fixed clamp and the movable clamp are close to each other, the small ball moves according to the position of the jade, and the telescopic strip fits the jade more closely.
[0019] Furthermore, a strip-shaped protrusion facing the fixing fixture is provided at the bottom of the movable U-shaped block, and a groove is provided at a corresponding position of the operating table, and the cross-section of the protrusion is trapezoidal.
[0020] The beneficial effect of adopting the above-mentioned improvement scheme is that by providing the strip-shaped protrusion, the movable U-shaped block can be moved on the operating table, thereby enabling the movable fixture to move forward and backward following the movable mechanism.
[0021] Furthermore, a circle of annular depression is provided at the contact portion between the spiral screw and the movable U-shaped block, and an annular protrusion is provided at the position of the movable U-shaped block corresponding to the depression.
[0022] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by providing the annular recess and protrusion, the screw rod and the movable U-shaped block can be rotatably connected, and the movable U-shaped block can move forward and backward following the movable mechanism.
[0023] Furthermore, the operating table is rotatably connected to the desktop at the bottom via a rotating shaft, and a support rod is provided on a side of the operating table away from the rotating shaft.
[0024] The beneficial effect of adopting the above-mentioned improvement scheme is that by providing the rotating shaft and the support rod, the operating table can be adjusted to a suitable angle for the user, making the user more comfortable.
[0025] Furthermore, a rubber pad is provided on a side of the telescopic strip away from the elastic mechanism.
[0026] The beneficial effect of adopting the above-mentioned improvement scheme is that by providing the rubber pad, direct contact between the telescopic strip and the jade is avoided, thereby avoiding damage to the jade caused by collision after the telescopic strip and the jade come into contact.
[0027] Compared with the prior art, the beneficial effects of the jade carving clamping device provided by the utility model are:
[0028] Enhanced clamping stability:
[0029] Both the fixed fixture and the movable fixture adopt a U-shaped block design, which, together with the closely arranged telescopic strips and elastic mechanism, can ensure that the jade is stably fixed in all directions, preventing displacement or shaking during the carving process.
[0030] The mobile clamp is connected to the operating table through a screw rod, and the clamping force can be precisely adjusted to suit jades of different sizes and shapes.
[0031] Protect the surface of jade:
[0032] A rubber pad is provided on the side of the telescopic strip away from the elastic mechanism, which can effectively reduce the pressure on the surface of the jade, avoid scratches or indentations, and protect the integrity and aesthetics of the jade.
[0033] The design of the elastic mechanism (such as a spring or a small ball) can provide a buffering effect to avoid damage to the jade due to excessive clamping.
[0034] Operational convenience:
[0035] The moving mechanism composed of the screw rod and the fixed block makes the adjustment of the mobile fixture very convenient. The operator can easily move the fixture back and forth by rotating the screw rod.
[0036] The operating table is connected to the bottom table through a rotating shaft and is equipped with a support rod. The position of the operating table can be adjusted according to the carving angle requirements to improve the flexibility and comfort of operation.
[0037] Strong applicability:
[0038] The device is not only suitable for rectangular flat operating tables, but also can adapt to jades of various shapes and sizes through the design of movable fixtures and fixed fixtures, and has wide applicability.
[0039] The bar-shaped protrusions at the bottom of the mobile U-shaped block cooperate with the grooves on the operating table to ensure the linearity and stability of the mobile fixture during the sliding process, which is suitable for engraving work of different complexities.
[0040] Compact and reliable:
[0041] The entire device adopts a modular design, and the connection methods between the components (such as threaded connection and snap connection) not only ensure the connection strength, but also facilitate disassembly and maintenance.
[0042] The annular concave and convex design at the contact point between the spiral screw and the movable U-shaped block enhances the reliability of the connection and prevents loosening after long-term use.
[0043] Improve work efficiency:
[0044] The quick adjustment and stable clamping function reduces the operator's time and energy in fixing the jade, making the carving process more efficient.
[0045] By optimizing the design of the clamping device, the engraving accuracy and yield rate are improved, the scrap rate is reduced, and the overall work efficiency is improved.
[0046] In short, this jade carving clamping device not only meets the high requirements of jade carving in terms of functionality, but also fully considers the operator's experience in design. It has high practical value and market prospects. BRIEF DESCRIPTION OF THE DRAWINGS
[0047] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0048] Figure 1 This is a schematic diagram of a jade carving clamping device;
[0049] Figure 2 This is a cross-sectional view of a first embodiment of a jade carving clamping device;
[0050] Figure 3 It is a cross-sectional view of a second embodiment of a jade carving clamping device;
[0051] In the accompanying drawings, the components represented by the reference numerals are as follows:
[0052] 1. Operating table; 2. Fixed fixture; 21. Telescopic bar; 22. Fixed U-shaped block; 23. Elastic mechanism; 24. Cover plate; 25. Mobile U-shaped block; 3. Mobile fixture; 4. Mobile mechanism; 41. Screw rod; 42. Fixed block. DETAILED DESCRIPTION
[0053] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.
[0054] like Figure 1 , Figure 2 As shown, it is a first embodiment of a jade carving clamping device provided by the utility model. In this embodiment, it includes an operating table 1, a fixed clamp 2 and a movable clamp 3. The operating table 1 is a rectangular flat plate. The fixed clamp 2 and the movable clamp 3 are placed axially symmetrically above the operating table 1. The fixed clamp 2 is fixed on the surface of the operating table 1, and the movable clamp 3 is slidably connected to the operating table 1. The adjacent surfaces of the fixed clamp 2 and the movable clamp 3 are provided with a retractable telescopic strip 21, and the telescopic strip 21 is used to fix jade. The end of the movable clamp 3 away from the fixed clamp 2 is slidably connected to the operating table 1 through a moving mechanism 4, and the moving mechanism 4 is fixedly connected to the operating table 1.
[0055] Among them, in the above technical scheme, the fixed clamp 2 includes a telescopic strip 21, a fixed U-shaped block 22, an elastic mechanism 23 and a cover plate 24. The fixed U-shaped block 22 is U-shaped and is fixed on the surface of the operating table 1. The opening direction of the fixed U-shaped block 22 is toward the direction of the mobile clamp 3. A plurality of closely arranged telescopic strips 21 are placed in the opening direction of the fixed U-shaped block 22. The height of the telescopic strip 21 is equal to the height of the fixed U-shaped block 22. The telescopic strip 21 is a rectangular structure. The position of the telescopic strip 21 away from the mobile clamp 3 is movably connected by the elastic mechanism 23. The top of the fixed U-shaped block 22 is fixedly connected to a cover plate 24. The cover plate 24 is a rectangular flat plate used to cover the telescopic strip 21.
[0056] Furthermore, in the above technical solution, the movable clamp 3 includes a telescopic bar 21, a movable U-shaped block 25, an elastic mechanism 23 and a cover plate 24. The movable U-shaped block 25 is U-shaped and is slidingly connected to the surface of the operating table 1. The opening direction of the movable U-shaped block 25 is toward the direction of the fixed clamp 2. A plurality of closely arranged telescopic bars 21 are placed in the opening direction of the telescopic bar 21 and the movable U-shaped block 25. The part of the movable U-shaped block 25 away from the fixed clamp 2 is rotatably connected to the movable mechanism 4. The height of the telescopic bar 21 is equal to the height of the movable U-shaped block 25. The telescopic bar 21 is a rectangular structure. The position of the telescopic bar 21 away from the movable clamp 3 is movably connected through the elastic mechanism 23. The top of the fixed U-shaped block 22 is fixedly connected to a cover plate 24. The cover plate 24 is a rectangular flat plate used to cover the telescopic bar 21.
[0057] Furthermore, in the above technical solution, the moving mechanism 4 includes a screw rod 41 and a fixed block 42. One end of the screw rod 41 is rotatably connected to the movable U-shaped block 25. The middle section of the screw rod 41 is provided with a thread. The fixed block 42 is a block structure and is fixedly connected to the upper surface of the operating table 1. A through hole is provided on the fixed block 42. The screw rod 41 passes through the inside of the through hole. The through hole is provided with a thread corresponding to the thread of the screw rod 41.
[0058] Furthermore, in the above technical solution, the elastic mechanism 23 is a plurality of springs, and the number of the springs is equal to a multiple of the number of the telescopic strips 21 .
[0059] Furthermore, in the above technical solution, a strip-shaped protrusion facing the fixed fixture 2 is provided at the bottom of the movable U-shaped block 25 , and a groove is provided at a corresponding position of the operating table 1 , and the cross-section of the protrusion is trapezoidal.
[0060] Furthermore, in the above technical solution, a circle of annular depression is provided at the contact portion between the screw rod 41 and the movable U-shaped block 25, and an annular protrusion is provided at the position of the movable U-shaped block 25 corresponding to the depression.
[0061] Furthermore, in the above technical solution, the operating table 1 is rotatably connected to the desktop at the bottom via a rotating shaft, and a support rod is provided on the side of the operating table 1 away from the rotating shaft.
[0062] Furthermore, in the above technical solution, a rubber pad is provided on the side of the telescopic strip 21 away from the elastic mechanism 23 .
[0063] like Figure 1 , Figure 3 As shown, it is a second embodiment of a jade carving clamping device provided by the utility model. In this embodiment, it includes an operating table 1, a fixed clamp 2 and a movable clamp 3. The operating table 1 is a rectangular flat plate. The fixed clamp 2 and the movable clamp 3 are placed axially symmetrically above the operating table 1. The fixed clamp 2 is fixed on the surface of the operating table 1, and the movable clamp 3 is slidably connected to the operating table 1. The adjacent surfaces of the fixed clamp 2 and the movable clamp 3 are provided with a retractable telescopic strip 21, and the telescopic strip 21 is used to fix jade. The end of the movable clamp 3 away from the fixed clamp 2 is slidably connected to the operating table 1 through a moving mechanism 4, and the moving mechanism 4 is fixedly connected to the operating table 1.
[0064] Among them, in the above technical scheme, the fixed clamp 2 includes a telescopic strip 21, a fixed U-shaped block 22, an elastic mechanism 23 and a cover plate 24. The fixed U-shaped block 22 is U-shaped and is fixed on the surface of the operating table 1. The opening direction of the fixed U-shaped block 22 is toward the direction of the mobile clamp 3. A plurality of closely arranged telescopic strips 21 are placed in the opening direction of the fixed U-shaped block 22. The height of the telescopic strip 21 is equal to the height of the fixed U-shaped block 22. The telescopic strip 21 is a rectangular structure. The position of the telescopic strip 21 away from the mobile clamp 3 is movably connected by the elastic mechanism 23. The top of the fixed U-shaped block 22 is fixedly connected to a cover plate 24. The cover plate 24 is a rectangular flat plate used to cover the telescopic strip 21.
[0065] Furthermore, in the above technical solution, the movable clamp 3 includes a telescopic bar 21, a movable U-shaped block 25, an elastic mechanism 23 and a cover plate 24. The movable U-shaped block 25 is U-shaped and is slidingly connected to the surface of the operating table 1. The opening direction of the movable U-shaped block 25 is toward the direction of the fixed clamp 2. A plurality of closely arranged telescopic bars 21 are placed in the opening direction of the telescopic bar 21 and the movable U-shaped block 25. The part of the movable U-shaped block 25 away from the fixed clamp 2 is rotatably connected to the movable mechanism 4. The height of the telescopic bar 21 is equal to the height of the movable U-shaped block 25. The telescopic bar 21 is a rectangular structure. The position of the telescopic bar 21 away from the movable clamp 3 is movably connected through the elastic mechanism 23. The top of the fixed U-shaped block 22 is fixedly connected to a cover plate 24. The cover plate 24 is a rectangular flat plate used to cover the telescopic bar 21.
[0066] Furthermore, in the above technical solution, the moving mechanism 4 includes a screw rod 41 and a fixed block 42. One end of the screw rod 41 is rotatably connected to the movable U-shaped block 25. The middle section of the screw rod 41 is provided with a thread. The fixed block 42 is a block structure and is fixedly connected to the upper surface of the operating table 1. A through hole is provided on the fixed block 42. The screw rod 41 passes through the inside of the through hole. The through hole is provided with a thread corresponding to the thread of the screw rod 41.
[0067] Furthermore, in the above technical solution, the elastic mechanism 23 is a small ball distributed over the opening of the movable U-shaped block 25 of the telescopic strip 21 and the contact portion with the fixed U-shaped block 22 .
[0068] Furthermore, in the above technical solution, a strip-shaped protrusion facing the fixed fixture 2 is provided at the bottom of the movable U-shaped block 25 , and a groove is provided at a corresponding position of the operating table 1 , and the cross-section of the protrusion is trapezoidal.
[0069] Furthermore, in the above technical solution, a circle of annular depression is provided at the contact portion between the screw rod 41 and the movable U-shaped block 25, and an annular protrusion is provided at the position of the movable U-shaped block 25 corresponding to the depression.
[0070] Furthermore, in the above technical solution, the operating table 1 is rotatably connected to the desktop at the bottom via a rotating shaft, and a support rod is provided on the side of the operating table 1 away from the rotating shaft.
[0071] Furthermore, in the above technical solution, a rubber pad is provided on the side of the telescopic strip 21 away from the elastic mechanism 23 .
[0072] Specifically, the principle of the present utility model is:
[0073] During use, the jade is placed between the fixed clamp 2 and the movable clamp 3, and the position of the movable clamp 3 is adjusted by the movable mechanism 4 so that the telescopic strip 21 contacts the jade and fixes the jade. Since the tail of the telescopic strip 21 is provided with an elastic mechanism 23, the telescopic strip 21 can be extended and retracted according to the shape of the jade, so that more telescopic strips 21 contact the jade, sharing the clamping force of the telescopic strip 21 on the jade and avoiding damage to the jade.
Claims
1. A jade carving clamping device, characterized in that: The invention comprises an operating table (1), a fixed fixture (2) and a movable fixture (3), wherein the operating table (1) is a rectangular flat plate, the fixed fixture (2) and the movable fixture (3) are symmetrically placed above the operating table (1), the fixed fixture (2) is fixed on the surface of the operating table (1), the movable fixture (3) is slidably connected to the operating table (1), the adjacent surfaces of the fixed fixture (2) and the movable fixture (3) are provided with a retractable telescopic strip (21), the retractable strip (21) is used to fix the jade, and the end of the movable fixture (3) away from the fixed fixture (2) is slidably connected to the operating table (1) through a moving mechanism (4), and the moving mechanism (4) is fixedly connected to the operating table (1).
2. A jade carving clamping device according to claim 1, characterized in that, The fixed fixture (2) comprises a telescopic strip (21), a fixed U-shaped block (22), an elastic mechanism (23) and a cover plate (24); the fixed U-shaped block (22) is U-shaped and fixed on the surface of the operating table (1); the opening direction of the fixed U-shaped block (22) faces the direction of the movable fixture (3); a plurality of closely arranged telescopic strips (21) are placed in the opening direction of the fixed U-shaped block (22); the height of the telescopic strips (21) is equal to the height of the fixed U-shaped block (22); the telescopic strips (21) are rectangular parallelepiped structures; the position of the telescopic strips (21) away from the movable fixture (3) is movably connected via the elastic mechanism (23); the top of the fixed U-shaped block (22) is fixedly connected to the cover plate (24); the cover plate (24) is a rectangular flat plate used to cover the telescopic strips (21).
3. A jade carving clamping device according to claim 2, characterized in that, The movable fixture (3) comprises a telescopic strip (21), a movable U-shaped block (25), an elastic mechanism (23) and a cover plate (24); the movable U-shaped block (25) is U-shaped and is slidably connected to the surface of the operating table (1); the opening direction of the movable U-shaped block (25) is toward the direction of the fixed fixture (2); a plurality of telescopic strips (21) arranged closely are placed in the opening direction of the movable U-shaped block (25); the portion of the movable U-shaped block (25) away from the fixed fixture (2) is rotatably connected to the movable mechanism (4); the height of the telescopic strip (21) is equal to the height of the movable U-shaped block (25); the telescopic strip (21) is a rectangular parallelepiped structure; the position of the telescopic strip (21) away from the movable fixture (3) is movably connected via the elastic mechanism (23); the top of the fixed U-shaped block (22) is fixedly connected to the cover plate (24); the cover plate (24) is a rectangular flat plate for covering the telescopic strip (21).
4. A jade carving clamping device according to claim 3, characterized in that, The moving mechanism (4) comprises a screw rod (41) and a fixed block (42), one end of the screw rod (41) is rotatably connected to the moving U-shaped block (25), the middle section of the screw rod (41) is provided with a thread, the fixed block (42) is a block-shaped structure, and is fixedly connected to the upper surface of the operating table (1), a through hole is provided on the fixed block (42), the screw rod (41) passes through the interior of the through hole, and the through hole is provided with a thread corresponding to the thread of the screw rod (41).
5. A jade carving clamping device according to claim 4, characterized in that, The elastic mechanism (23) is a plurality of springs, and the number of the springs is equal to a multiple of the number of the telescopic strips (21).
6. A jade carving clamping device according to claim 5, characterized in that, The elastic mechanism (23) is a small ball that covers the opening of the movable U-shaped block (25) of the telescopic strip (21) and the contact portion with the fixed U-shaped block (22).
7. A jade carving clamping device according to claim 6, characterized in that, The bottom of the movable U-shaped block (25) is provided with a strip-shaped protrusion facing the fixing fixture (2), and the operating table (1) is provided with a groove at a corresponding position, and the cross section of the protrusion is trapezoidal.
8. A jade carving clamping device according to claim 7, characterized in that, A circle of annular depression is provided at the contact portion between the spiral screw rod (41) and the movable U-shaped block (25), and an annular protrusion is provided at a position corresponding to the depression of the movable U-shaped block (25).
9. A jade carving clamping device according to claim 8, characterized in that: The operating table (1) is rotatably connected to the desktop at the bottom via a rotating shaft, and a support rod is provided on the side of the operating table (1) away from the rotating shaft.
10. A jade carving clamping device according to claim 9, characterized in that: A rubber pad is provided on the side of the telescopic strip (21) away from the elastic mechanism (23).