A clamp

Abstract

The utility model relates to workpiece positioning device technical field, concretely relates to a clamp. The clamp includes: base and set up on the base clamping assembly, and clamping assembly includes the pair of clamps of opposite setting, at least one clamping plate is connected with the drive device that drives its to move towards another clamping plate, and the pair of clamps is set up, and at least one side surface is equipped with the clamping finger of group on opposite two side surfaces, and the clamping finger includes the guide segment of installing on the clamping plate and guiding sliding towards another clamping plate, and the end of guide segment is the end of pressing and clamping, and the end of pressing and clamping end is plane end, spherical surface end or sharp end, and the side away from the end of pressing and clamping of guide segment is equipped with the elastic force of providing to the clamping guide directional sliding of pressing spring, and the anti -drop structure between clamping finger and clamping plate is equipped with to avoid the clamping finger relative clamping plate to separate. The utility model's clamp solves the problem that the clamping force of clamp to object is unstable, and the problem of insufficient adaptive capacity.

Description

Technical Field

[0001] This utility model relates to the technical field of workpiece positioning devices, specifically to a clamp. Background Technology

[0002] During electrical safety testing of electrical facilities, which involves physical phenomena such as thermal radiation, acoustic emission, or electromagnetic emission, clamps or fixtures are used to hold the object under test. Typically, clamps or fixtures used for electrical testing have a base plate with two relatively movable clamping plates. Each clamping plate has elastic clamping elements that can move relative to the clamping plates, and a drive mechanism for driving the two clamping plates to move in opposite directions.

[0003] As disclosed in Chinese Utility Model Patent No. CN215967436U, a clamping device for a drilling machine includes a base, a first clamping plate and a second clamping plate slidably connected to the base, a first chamber and a second chamber on the base, a first driving device in the first chamber and a second driving device in the second chamber. The first driving device drives the first clamping plate to move, and the second driving device drives the second clamping plate to move, thereby realizing the opposing movement of the first and second clamping plates. Multiple elastic clamping elements are provided on opposite sides of the first and second clamping plates. Each elastic clamping element includes a transition plate disposed on the first and second clamping plates, a sleeve on the transition plate, a sliding rod slidably connected inside the sleeve, and a pressure plate connected to the end of the sliding rod. A spring is disposed between the pressure plate and the transition plate. Therefore, when the pressure plate contacts the clamped object, the pressure plate and the sliding rod can elastically extend and retract relative to the sleeve, increasing the contact area between the pressure plate and the object surface, thereby improving the clamping capacity of the clamp.

[0004] In the aforementioned prior art, clamping refers to the contact between the pressure plate of the flat plate structure and the surface of the object being clamped. Although multiple elastic clamping elements are provided to improve the clamping capacity and applicability of the fixture, the rear side of the pressure plate has elastic floating capability due to the cooperation of the spring. The pressure plate itself needs to have a certain area to ensure stable pressure against the end of the spring. When the surface shape of the object being clamped is complex, when the pressure plate of the flat plate structure contacts the irregular or non-planar object being clamped, there will be a situation where only a part of the pressure plate contacts the surface of the object being clamped, while other parts do not make contact. This will lead to uneven clamping force of the pressure plate on the object, which will easily result in loose and unstable clamping of the object. Utility Model Content

[0005] The purpose of this utility model is to provide a clamp to solve the problem that the clamping force of the elastic clamping member of the flat plate structure is uneven, which leads to the clamping instability and insufficient adaptability of the clamp.

[0006] To achieve the above objectives, the fixture of this utility model adopts the following technical solution:

[0007] A clamp includes: a base and a clamping assembly disposed on the base. The clamping assembly includes a pair of opposing clamping plates. At least one of the clamping plates is connected to a drive device that drives it to move toward the other clamping plate. On at least one of the opposing sides of the pair of clamping plates, a set of clamping fingers is mounted. Each clamping finger includes a guide segment mounted on the clamping plate and sliding toward the other clamping plate. The end of the guide segment is a pressing clamping end for contacting the surface of the clamped object. The end of the pressing clamping end is a flat end, a spherical end, or a pointed end. A compression spring is disposed on the side of the guide segment opposite to the pressing clamping end to provide an elastic force for the clamping finger to slide directionally. An anti-disengagement structure is provided between the clamping finger and the clamping plate to prevent the clamping finger from disengaging relative to the clamping plate.

[0008] Furthermore, the clamping plate is provided with a plurality of clamping finger mounting holes, and the clamping finger mounting holes are provided with a constriction on one side facing the other clamping plate. One end of the clamping finger is provided with an anti-disengagement edge that cooperates with the inner edge of the constriction. The clamping plate also includes a cover, and the compression spring is disposed in the clamping finger mounting hole between the cover and the clamping finger.

[0009] Furthermore, the guide section slides into contact with the inner wall of the constriction.

[0010] Furthermore, a set of clamping fingers is provided on both sides.

[0011] Furthermore, the clamping fingers respectively provided on the two sides are positioned opposite each other in the direction in which the clamping fingers slide.

[0012] Furthermore, the clamping fingers are arranged in an array on the clamping plate.

[0013] Furthermore, the length of the guide section is greater than the length of the clamping finger mounting hole.

[0014] Furthermore, both clamping plates are connected to the driving device, which includes a screw. The screw is threadedly connected to the clamping plates. The screw is a double-ended lead screw. The two clamping plates are respectively connected to two threaded sections on the double-ended lead screw with opposite thread directions through threaded holes.

[0015] Furthermore, the base includes a base plate and a support plate rotatably mounted on the base plate about a vertical axis, the clamping assembly is disposed on the support plate, and an elastic positioning assembly for preventing relative rotation between the base plate and the support plate is also provided.

[0016] Compared with the prior art, the clamp provided in this utility model embodiment is a pioneering invention. The beneficial effects of the clamp are as follows: the clamping spring is directly set between the clamping fingers and the clamping plate, so the clamping spring will not interfere with or affect the structure of the clamping end. Therefore, the clamping end can be set as a flat end, a spherical end, or a pointed end. This structure of the clamping end can improve its adaptability to the surface of the object being clamped, thereby enhancing the adaptability between the clamp and the object to be clamped. On the other hand, the grouped clamping fingers can increase the number of contact points between the clamp and the object being clamped. More contact points can keep the force applied to the opposite sides of the object being clamped balanced and uniform, thereby improving the stability of the clamp in holding the object. Attached Figure Description

[0017] Figure 1 A schematic diagram of the fixture provided by this utility model;

[0018] Figure 2 A cross-sectional schematic diagram of the clamp provided by this utility model;

[0019] Figure 3 yes Figure 2 Enlarged view of a portion of position A in the middle;

[0020] Figure 4 A cross-sectional view of the clamp provided by this utility model from another direction;

[0021] Figure 5 yes Figure 4 A magnified view of a portion of position B in the middle.

[0022] In the diagram: 1. Fixture; 10. Base; 11. Support plate; 111. Slide groove; 12. Base plate; 13. Support block; 14. Positioning post; 141. Through hole; 15. Protective block; 20. Clamping plate; 21. Clamping part; 211. Clamping finger mounting hole; 2111. Closure; 22. Sliding part; 221. Threaded hole; 23. Cover; 30. Clamping finger; 31. Anti-detachment edge; 32. Pressing spring; 33. Pressing clamping end; 34. Guide section; 40. Drive device; 41. Screw; 42. Handle; 421. Locking protrusion; 43. Connecting block; 431. Locking groove; 50. Elastic positioning component; 51. Sleeve; 511. Sliding groove; 52. Positioning component; 521. Pressure plate; 522. Lever; 523. Locking spring. Detailed Implementation

[0023] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0024] An embodiment of the clamp of this utility model is as follows:

[0025] The clamp of this invention has a plurality of clamping fingers on at least one of the two opposing sides of the two clamping plates. Because a compression spring is provided on the side of the clamping fingers facing the clamping plate, it does not affect the structure of the pressing clamping end of the clamping fingers facing the other clamping plate. This allows the pressing clamping end to be set as a flat end, a spherical end, or a pointed end, thereby enhancing the adaptability of the clamping fingers when in contact with the object surface. The clamping fingers are arranged in groups to increase the contact points between the clamp and the surface of the object being clamped, thereby improving the stability of the clamp during actual clamping use.

[0026] Based on the main concepts above, different embodiments are provided below for illustration.

[0027] As a basic solution, such as Figure 1-3 As shown, the clamp 1 of this utility model includes a base 10 and a pair of clamping plates 20 disposed opposite to each other on the base 10. One clamping plate 20 is fixedly connected to the base 10, and the other clamping plate 20 is connected to a driving device 40, which can drive the relatively fixed clamping plate 20 to move closer or further apart. A set of clamping fingers 30 is provided on the side of one of the clamping plates 20 facing the other clamping plate 20. The clamping fingers 30 have a guide section 34 that can slide relative to the other clamping plate 20. A pressing spring 32 is provided between the side of the guide section 34 facing the clamping plate 20 and the clamping plate 20. The end of the guide section 34 facing the other clamping plate 20 is a pressing clamping end 33. Because the pressing spring 32 is directly disposed between the clamping finger 30 and the clamping plate 20, the pressing spring 32 will not interfere with or affect the structure of the pressing clamping end 33. Therefore, the pressing clamping end 33 can be set as a flat end, a spherical end, or a pointed end. This structure of the clamping end 33 improves its adaptability to the surface of the object being clamped, thus enhancing its compatibility with the object to be clamped. On the other hand, the grouped clamping fingers 30 increase the number of contact points between the clamp 1 and the object being clamped. More contact points allow the forces applied to the object on both sides to remain balanced and uniform, thereby improving the stability of the clamp 1 in holding the object. To prevent the clamping fingers 30 from detaching from the clamping plate 20 during actual use, an anti-detachment structure is also provided between the clamping fingers 30 and the clamping plate 20.

[0028] In the above embodiment, only one clamping plate 20 can move relative to the base 10. Such relative movement is relatively slow. Therefore, the driving device 40 connects two clamping plates 20 so that both clamping plates 20 can move relative to each other, so as to achieve faster and more convenient approach or distance between the two clamping plates 20.

[0029] In this embodiment, when the surface of the object being held has a part that is regular and a part that is irregular, clamping fingers 30 are provided on only one side of the two opposing sides of the two clamping plates 20, so that the regular plane of the object being held corresponds to the clamping plate 20 without clamping fingers 30, and the irregular surface corresponds to the clamping plate 20 with clamping fingers.

[0030] In a preferred embodiment, a set of clamping fingers 30 is provided on both sides of the two opposing clamping plates 20, so that the clamp 1 with this structure can clamp objects with irregular surfaces. This structure of the clamp 1 can further increase the contact points with the object surface, thus improving the clamping stability and adaptability of the clamp 1.

[0031] In one embodiment, the end face of the clamping end 33 is a spherical end face structure, which is mainly used to clamp objects with curved surfaces.

[0032] In another embodiment, the end face of the clamping end 33 is a planar end face structure, which is mainly used to clamp objects with planar structures.

[0033] In another embodiment, the end face of the clamping end 33 is a pointed end face structure, which is mainly used for clamping precision instruments or small objects.

[0034] Preferably, the clamping fingers 30 arranged in groups on the two opposite sides of the two clamping plates 20 are arranged facing each other in the direction of the guide sliding. This also enables the corresponding clamping fingers 30 to contact the opposite sides of the object in the same horizontal direction. This allows the opposite sides of the clamped object to maintain a relative balance of clamping force, and avoids the clamping of the object by the clamp 1 from shaking and being unstable.

[0035] Preferably, the clamping fingers 30 on the clamping plate 20 are arranged in an array. This increases the number and uniformity of the clamping fingers 30 on the clamping plate 20, so that the clamping force on the opposite sides of the clamped object can be kept balanced. At the same time, it increases the contact points and contact area between the object surface and the clamp 1, thereby increasing the clamping capacity of the clamp 1.

[0036] In one embodiment, the clamping fingers 30 on the clamping plate 20 are arranged in a circular array; or, in a rectangular array.

[0037] Another embodiment is that the clamping fingers 30 on the clamping plate 20 are arranged in a honeycomb pattern; or, the clamping fingers 30 have multiple rows and each row is arranged in the form of serrated lines or wavy lines.

[0038] In one embodiment, the guide segment 34 is less than or equal to the length of the clamping finger mounting hole 211, so that when the object presses the clamping finger 30 to its limit position, the clamping finger 30 will be submerged in the clamping finger mounting hole 211.

[0039] In a preferred embodiment, the length of the guide section 34 is greater than the length of the clamping finger mounting hole 211. This ensures that when the object squeezes the clamping finger 30 to its limit position, part of the clamping finger 30 will still be exposed from the clamping finger mounting hole 211, thus preventing the clamping finger 30 from being completely submerged in the clamping finger mounting hole 211 and preventing the clamping plate 20 from directly contacting and clamping the object.

[0040] Further, refer to Figure 2 In an embodiment of the anti-detachment structure, the clamping plate 20 has multiple clamping finger mounting holes 211, the clamping finger mounting holes 211 have a narrow opening 2111 facing the other clamping plate 20, and one end of the clamping finger 30 is provided with an anti-detachment stop edge 31 that cooperates with the inner edge of the narrow opening 2111.

[0041] In another embodiment, the clamping finger 30 is provided with an abutting ring at one end facing the clamping spring 32, which abuts against the inner edge of the constriction 2111. The abutting ring abuts against the inner edge of the constriction 2111 to limit the clamping finger 30.

[0042] Of course, in addition to the above-mentioned arrangement, a strip-shaped groove extending along the direction of the clamping finger mounting hole 211 can also be provided in the clamping finger mounting hole 211, and a protrusion can be provided on the end of the clamping finger 30 facing the clamping spring 32. The protrusion can slide relative to the strip-shaped groove and can abut against the bottom of the strip-shaped groove. Alternatively, a limiting block can be provided at the opening of the groove of the clamping finger mounting hole 211, and an anti-disengagement edge 31 can be provided on the end of the clamping finger 30 facing the clamping spring 32. The anti-disengagement edge 31 can abut against the limiting block.

[0043] Furthermore, the clamping plate 20 also includes a cover 23, and a clamping spring 32 is disposed within the clamping finger mounting hole 211, positioned between the cover 23 and the clamping finger 30. In this embodiment, because a constriction 2111 is provided on the clamping finger mounting hole 211, and an anti-disengagement flange 31 that mates with the constriction 2111 is provided on the clamping finger 30, the clamping finger 30 cannot pass through the constriction 2111 and be installed in the clamping finger mounting hole 211. In actual installation, the clamping finger mounting hole 211 is configured as a through hole 141. After the clamping spring 32 and the clamping finger 30 are installed, a cover 23 is provided at the opening of the clamping finger mounting hole 211 on the side of the clamping plate 20 facing away from the other clamping plate 20 to prevent the clamping spring 32 and the clamping finger 30 from disengaging. After the cover 23 and the clamping finger mounting hole 211 are installed, the two opposite ends of the clamping spring 32 abut against the cover 23 and the clamping finger mounting hole 211 respectively.

[0044] Another embodiment is that the clamping plate 20 includes two connecting plates that can be connected to each other. One connecting plate is provided with a clamping finger mounting hole 211, and the other connecting plate is provided on one side of the connecting plate after the compression spring and clamping finger 30 are installed, so as to cover the clamping finger mounting hole 211.

[0045] refer to Figure 2 The guide section 34 slides with the inner wall of the constriction 2111. In this embodiment, the clamping finger 30 can slide relative to the clamping plate 20 in the clamping finger mounting hole 211. Therefore, the guide section 34 of the clamping finger 30 can slide with the inner wall of the constriction 2111 where the clamping finger mounting hole 211 is provided during the movement of the clamping finger 30, so as to realize the guiding slide of the guide section 34.

[0046] In an embodiment where an abutment ring is provided at one end of the clamping finger 30 facing the clamping plate 20, the abutment ring slides in conjunction with the clamping finger mounting hole 211.

[0047] refer to Figure 1 and Figure 2 The driving device 40 includes a screw 41, and two clamping plates 20 are respectively provided with threaded holes 221. The screw 41 is threadedly connected to the two threaded holes 221 respectively. The screw 41 simultaneously controls the relative movement of the two clamping plates 20, thereby completing the clamping action. The screw 41 is a double-ended lead screw to realize the opposing movement of the two clamping plates 20. The threads in the threaded holes 221 of the two clamping plates 20 are set in the same direction, so the threads on the double-ended lead screw are divided into two thread segments with opposite directions. The threaded holes 221 on the two clamping plates 20 are respectively connected to the two thread segments with opposite directions.

[0048] In another embodiment, two screws 41 are provided, each screw 41 controls a clamping plate 20 to move, that is, each lead screw and nut structure as a driving structure drives a clamping plate 20 to move.

[0049] refer to Figure 4 The base 10 includes a support plate 11 with a groove 111. The clamping plate 20 includes a sliding part 22 and a clamping part 21 connected to each other. A clamping finger mounting hole 211 is provided on the clamping part 21. The sliding part 22 is located in the groove 111 and slides in cooperation with the groove 111. In this embodiment, the groove 111 is used to limit and guide the movement of the clamping plate 20, preventing the screw 41 from shaking or rotating during the movement of the driving screw 41, and ensuring the normal horizontal movement of the clamping plate 20.

[0050] refer to Figure 4The base 10 also includes a base plate 12 and a support block 13. The support block 13 is disposed between the base plate 12 and the support plate 11, and is located on the base plate 12. One end of the support block 13 facing away from the base plate 12 is rotatably mounted to the support plate 11. In this embodiment, the support plate 11 is mounted on the base plate 12 via the support block 13. The support block 13 is fixedly connected to the base plate 12, and the support block 13 and the support plate 11 are fitted together around a vertical axis and can rotate relative to each other. This facilitates the disassembly and installation of the support plate 11 relative to the base plate 12, makes it convenient to carry and store the clamp 1, and also facilitates the adjustment of the relative angle between the two during clamping.

[0051] It should be noted that, in addition to the separate design of the base plate 12, support plate 11 and support block 13, the base 10 assembly can also be manufactured by integral molding.

[0052] In one embodiment, in order to ensure that the support plate 11 and the base plate 12 no longer rotate relative to each other after the workpiece is clamped, and to ensure the stability of the support plate 11 during use, an elastic positioning component 50 is provided between the support plate 11 and the base plate 12.

[0053] refer to Figure 5 The elastic positioning component 50 is used to prevent relative rotation between the base plate 12 and the support plate 11. The elastic positioning component 50 includes a sleeve 51 fixedly connected to the support plate 11. A positioning element 52, movable vertically relative to the sleeve 51, is provided inside the sleeve 51. A pressure plate 521, abutting against the base plate 12, is provided at one end of the positioning element 52 facing the base plate 12. A locking spring 523 is also provided between the pressure plate 521 and the support plate 11. An "L"-shaped sliding groove 511 is provided on the sleeve 51, and a lever 522, slidable relative to the sliding groove 511, is provided on the positioning element 52. In this embodiment, the elastic positioning component 50 is also provided on the side of the support plate 11 facing the base plate 12. The elastic positioning component 50 is used to limit the movement between the base plate 12 and the support plate 11 through friction, and also provides auxiliary support for the support plate 11. This prevents the support plate 11 from shaking or rotating relative to the base plate 12 during actual use.

[0054] In actual use, when positioning the support plate 11 relative to the base plate 12 is required, the lever 522 is pulled out from the "L"-shaped sliding groove 511, causing the lever 522 to move to the side closer to the base plate 12. The positioning member 52 is unlocked by the lever 522, and the locking spring 523, which restores elastic deformation, applies elastic force to it, pressing the positioning member 52 against the base plate 12. This causes the pressure plate 521 at the end of the positioning member 52 to abut against the base plate 12. The elastic force applied by the locking spring 523 to the pressure plate 521 increases the friction between the pressure plate 521 and the base plate 12, thereby achieving the limiting effect of the positioning member 52 on the base plate 12. When it is necessary to release the positioning between the support plate 11 and the base plate 12, push the lever 522 from the bottom of the sliding groove 511 to the side closer to the support plate 11, thereby driving the positioning member 52 and the pressure plate 521 at the end of the positioning member 52 to move toward the support plate 11. In this process, the locking spring 523 is compressed and the relative position of the positioning member 52 in the sleeve 51 is locked, thereby releasing the positioning member 52 from limiting the base plate 12.

[0055] Alternatively, in other embodiments, a limiting groove corresponding to the pressure plate 521 can be provided on the base plate 12, which can cooperate with the limiting groove to lock after the pressure plate 521 is pressed down, thereby further improving the limiting and locking capability of the elastic positioning component 50.

[0056] In another embodiment, such as Figure 5 As shown, the elastic positioning component 50 is an elastic locking pin fixedly installed on the base 12. The elastic locking pin includes a sleeve 51 disposed between the base plate 12 and the support plate 11, and a positioning element 52 located inside the sleeve 51 and capable of moving vertically within the sleeve 51. The positioning element 52 is disposed inside the sleeve 51, and the sleeve 51 is provided with an "L"-shaped sliding groove 511. The positioning element 52 is provided with a lever 522 capable of moving relative to the sliding groove 511. A pin hole corresponding to the positioning element 52 is provided on the support plate 11. In actual use, the lever 522 is moved to the side closer to the support plate 11, so that the end of the positioning element 52 facing the support plate 11 can extend into the pin hole, thereby locking the relative position of the support plate 11 and the base plate 12.

[0057] refer to Figure 2 and Figure 3 The drive device 40 also includes a handle 42, which is fixedly connected to the end of the screw 41. The handle 42 is located on the side of the clamping plate 20 away from the clamping finger 30. In this embodiment, the handle 42 facilitates the user's control of the screw 41. The user can rotate the handle 42 to drive the screw 41 to rotate, which simplifies the operation process.

[0058] In addition to the above-mentioned configuration, handles 42 can also be provided at both ends of the screw 41.

[0059] refer to Figure 2 and Figure 3 The drive device 40 also includes a connecting block 43, which is fixedly connected to the end of the screw 41. The handle 42 is connected to the screw 41 via the connecting block 43. The connecting block 43 has a slot 431, and the handle 42 has a protrusion 421 corresponding to the limiting slot. The protrusion 421 engages with the slot 431. In this embodiment, the handle 42 is connected to the end of the screw 41 via the connecting block 43. The connecting block 43 has a slot 431, and the protrusion 421 of the handle 42 engages with the slot 431. The engagement of the handle 42 with the connecting block 43 enhances the connection strength between the handle 42 and the screw 41, improving stability during use.

[0060] Preferably, the connecting block 43 has one slot 431 and a corresponding protrusion 421. In another embodiment, the connecting block 43 has multiple slots 431, and the handle 42 has multiple corresponding protrusions 421.

[0061] refer to Figure 1 and Figure 2 The base 10 is provided with a positioning post 14, which is located at the midpoint of the axis between the two threaded holes 221. The screw 41 passes through the positioning post 14 and the screw 41 is rotatably engaged with the positioning post 14.

[0062] In this embodiment, the positioning post 14 is on the base 10 and is located at the midpoint of the axis between the two threaded holes 221. This means that the distance between the two clamping plates 20 and the positioning post 14 is equal. This ensures that the distance between the two clamping plates 20 and the positioning post 14 is always equal during the movement process, so as to ensure that the movement range of the clamping plates 20 is not limited by the positioning post 14 being set in an unreasonable position.

[0063] Specifically, a through hole 141 coaxially arranged with the threaded hole 221 is provided on the positioning post 14. Part of the screw 41 is accommodated in the through hole 141. Since the screw 41 is to be threadedly connected to the threaded hole 221, the screw 41 and the positioning post 14 are rotated together to avoid the influence and restriction of the positioning post 14 on the rotational movement of the screw 41.

[0064] Preferably, the outer surface of the screw 41 portion located in the through hole 141 is not threaded, so as to reduce the friction between the screw 41 and the positioning post 14 and improve the rotation efficiency of the screw 41.

[0065] refer to Figure 2The screw 41 is fitted with protective blocks 15 corresponding to the clamping plate 20. The protective blocks 15 are located on opposite sides of the through hole 141, and the clamping plate 20 can abut against the protective blocks 15. In this embodiment, the outer surface of the screw 41 is fitted with protective blocks 15 corresponding to the clamping plate 20. After the screw 41 passes through the through hole 141, the two protective blocks 15 are set on opposite sides of the through hole 141 to fix the screw 41 in the axial direction.

[0066] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. A clamp, characterized in that, include: The base and a clamping assembly disposed on the base, the clamping assembly including a pair of opposing clamping plates, at least one of the clamping plates being connected to a drive device for moving toward the other clamping plate, and a set of clamping fingers mounted on at least one of the opposite sides of the pair of clamping plates, each clamping finger including a guide segment mounted on the clamping plate and sliding toward the other clamping plate, the end of the guide segment being a pressing clamping end for contacting the surface of the clamped object, the end of the pressing clamping end being a flat end, a spherical end, or a pointed end, a pressing spring being disposed on the side of the guide segment opposite to the pressing clamping end to provide an elastic force for the clamping finger to slide directionally, and an anti-disengagement structure being provided between the clamping finger and the clamping plate to prevent the clamping finger from disengaging relative to the clamping plate.

2. The clamp according to claim 1, characterized in that, The clamping plate has multiple clamping finger mounting holes. The clamping finger mounting holes have a constriction on one side facing the other clamping plate. One end of the clamping finger has an anti-dislodgement edge that cooperates with the inner edge of the constriction. The clamping plate also includes a cover. The compression spring is located in the clamping finger mounting hole between the cover and the clamping finger.

3. The clamp according to claim 2, characterized in that, The guide section slides into the inner wall of the constriction.

4. The clamp according to any one of claims 1-3, characterized in that, Both sides are provided with a set of clamping fingers.

5. The clamp according to claim 4, characterized in that, The clamping fingers respectively provided on the two sides are positioned opposite each other in the direction in which the clamping fingers slide.

6. The clamp according to any one of claims 1-3, characterized in that, The clamping fingers are arranged in an array on the clamping plate.

7. The clamp according to claim 2 or 3, characterized in that, The length of the guide section is greater than the length of the clamping finger mounting hole.

8. The clamp according to any one of claims 1-3, characterized in that, Both clamping plates are connected to the driving device, which includes a screw. The screw is threadedly connected to the clamping plates. The screw is a double-ended lead screw. The two clamping plates are respectively connected to two threaded sections on the double-ended lead screw with opposite thread directions through threaded holes.

9. The clamp according to any one of claims 1-3, characterized in that, The base includes a base plate and a support plate rotatably mounted on the base plate about a vertical axis. The clamping assembly is disposed on the support plate, and an elastic positioning assembly for preventing relative rotation between the base plate and the support plate is also provided.

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