Clamping device

Abstract

The utility model relates to the technical field of clamping devices, and provides a clamping device which comprises a bottom plate, a crimping part and a plurality of clamping assemblies, the crimping part is arranged on the bottom plate, a containing space used for containing a part to be clamped is formed in the middle of the crimping part, and the crimping part is suitable for deforming under the action of external force; the multiple clamping assemblies are arranged in the circumferential direction of the crimping part, the clamping assemblies are movably arranged on the bottom plate, and the clamping assemblies are suitable for moving towards the crimping part so as to push the inner wall of the crimping part to abut against the part to be clamped. By arranging the crimping part and the multiple clamping assemblies, the crimping part is suitable for deforming under the action of external force, and when the to-be-clamped part is placed in the middle of the crimping part, the clamping assemblies can move towards the crimping part to push the inner wall of the crimping part to abut against the to-be-clamped part, so that the crimping part deforms and is matched with the to-be-clamped part in shape; the clamping of to-be-clamped pieces in different shapes is realized, and the clamping stability and safety are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping devices, in particular to a clamping device. Background Art

[0002] In the related art, during the processing of workpieces, a clamping device is required to clamp and fix the workpieces. However, the existing clamping devices cannot match the workpieces with irregular shapes, so only the manual clamping and fixing method can be used. This fixing method has low safety and poor stability. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the related art. For this purpose, the utility model provides a clamping device, aiming to adapt to the clamping and fixing of workpieces to be clamped with different shapes and improve the clamping stability and safety.

[0004] The clamping device according to an embodiment of the utility model includes:

[0005] A bottom plate;

[0006] A pressing member, arranged on the bottom plate, a receiving space for placing the workpiece to be clamped is formed in the middle of the pressing member, and the pressing member is adapted to deform under an external force;

[0007] A plurality of clamping components, the plurality of clamping components are arranged along the circumferential direction of the pressing member, and the clamping components are movably arranged on the bottom plate, and the clamping components are adapted to move towards the pressing member to push the inner wall of the pressing member to abut against the workpiece to be clamped.

[0008] The clamping device according to an embodiment of the utility model includes a bottom plate, a pressing member and a plurality of clamping components. The pressing member is arranged on the bottom plate, and the middle part of the pressing member is adapted to place the workpiece to be clamped. The pressing member is adapted to deform under an external force; the plurality of clamping components are arranged along the circumferential direction of the pressing member, and the clamping components are movably arranged on the bottom plate. The clamping components are adapted to move towards the pressing member to push the inner wall of the pressing member to abut against the workpiece to be clamped. By providing the pressing member and the plurality of clamping components, the pressing member is adapted to deform under an external force. When the workpiece to be clamped is placed in the middle of the pressing member, the clamping components can move towards the pressing member to push the inner wall of the pressing member to abut against the workpiece to be clamped, so that the pressing member deforms and matches the shape of the workpiece to be clamped, realizing the clamping of workpieces to be clamped with different shapes, without manual clamping, and improving the clamping stability and safety.

[0009] The clamping device according to an embodiment of the utility model, the clamping device includes:

[0010] A first adjusting structure, the first adjusting structure connects the clamping component and the bottom plate, and the first adjusting structure is used to adjust the distance between the clamping component and the workpiece to be clamped;

[0011] A second adjusting structure, the second adjusting structure connecting the clamping assembly and the bottom plate, the second adjusting structure being movably disposed on the bottom plate for adjusting the position of the clamping assembly relative to the bottom plate.

[0012] For the clamping device according to an embodiment of the present invention, the second adjusting structure includes a chute provided along the circumference of the bottom plate, the clamping assembly passing through the chute, and the clamping assembly being adapted to move along the chute.

[0013] For the clamping device according to an embodiment of the present invention, the clamping assembly includes:

[0014] A clamping rod;

[0015] A first pressure plate disposed at one end of the clamping rod facing the pressing member, the cross-sectional area of the first pressure plate being larger than the cross-sectional area of the clamping rod.

[0016] For the clamping device according to an embodiment of the present invention, the first adjusting structure includes a first nut, the clamping rod being threadedly connected to the bottom plate, the first nut passing through the clamping rod, and the first nut being adapted to abut against the bottom plate.

[0017] For the clamping device according to an embodiment of the present invention, the clamping device further includes:

[0018] A top cover connected above the bottom plate;

[0019] A pressing assembly disposed on the top cover, the pressing assembly being adapted to move up and down relative to the top cover to abut against the top surface of the workpiece to be clamped.

[0020] For the clamping device according to an embodiment of the present invention, the pressing assembly includes:

[0021] A pressing rod threadedly connected to the top cover;

[0022] A second pressure plate fixed to one side of the pressing rod close to the pressing member;

[0023] A second nut sleeved on the pressing rod, and the nut being adapted to abut against the top cover.

[0024] For the clamping device according to an embodiment of the present invention, the cross-sectional area of the second pressure plate is larger than the cross-sectional area of the pressing rod.

[0025] The clamping device according to an embodiment of the present utility model, the bottom plate includes a first annular ring and a second annular ring sleeved outside the first annular ring, the first annular ring is connected to the second annular ring, the clamping assembly passes through the first annular ring, and an avoidance groove for avoiding the clamping assembly is formed between the first annular ring and the second annular ring.

[0026] The clamping device according to an embodiment of the present utility model,

[0027] The first annular ring and the second annular ring are connected by a plurality of rib plates, and the plurality of rib plates are arranged at intervals along the circumferential direction of the bottom plate;

[0028] And / or, the top cover and the bottom plate are connected by a plurality of connecting rods, and the plurality of connecting rods are arranged at intervals along the circumferential direction of the bottom plate.

[0029] The clamping device according to an embodiment of the present utility model, the crimping member is fixed to at least one of the clamping assemblies.

[0030] The clamping device according to an embodiment of the present utility model, the crimping member is rubber.

[0031] Additional aspects and advantages of the present utility model will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or related technologies, the following will briefly introduce the drawings required for use in the description of the embodiments or related technologies. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1 It is a schematic structural diagram of the clamping device provided by the embodiment of the present utility model.

[0034] Figure 2 It is an installation schematic diagram of the clamping assembly provided by the embodiment of the present utility model.

[0035] Figure 3 It is a schematic structural diagram of the clamping assembly provided by the embodiment of the present utility model.

[0036] Figure 4 It is an installation schematic diagram of the pressing assembly provided by the embodiment of the present utility model.

[0037] Figure 5 It is an installation schematic diagram of the bottom plate, the crimping member and the clamping assembly provided by the embodiment of the present utility model.

[0038] Reference numerals:

[0039] 100, bottom plate; 110, first annular ring; 120, second annular ring; 111, chute; 130, relief groove; 140, rib plate; 150, connecting rod;

[0040] 200, crimping part;

[0041] 300, clamping assembly; 310, clamping rod; 320, first pressure plate; 330, first nut;

[0042] 400, top cover;

[0043] 500, pressing assembly; 510, pressing rod; 520, second pressure plate; 530, second nut;

[0044] A, part to be clamped. Detailed implementation manners

[0045] The following further describes in detail the implementation manners of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0046] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0047] In the description of the embodiments of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific situations.

[0048] In the embodiments of the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0049] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0050] In the related art, during the processing of workpieces, a clamping device is required to clamp and fix the workpieces. However, the existing clamping devices cannot match the workpieces with irregular shapes, so only the manual clamping and fixing method can be used for fixation. This fixing method has low safety and poor stability.

[0051] Taking the workpiece to be clamped as a circuit board, such as PCBA (Printed Circuit Board Assembly) for example, the PCBA failure analysis sample is obtained by methods including sample preparation and precise cutting according to the needs of analyzing the root causes of failures of PCBs and various electronic components in the electronic and electrical industries. In order to better find the cause of failure, it is necessary to grind and polish the sample to make its surface smooth and flat for easy observation and analysis under a microscope. Currently, the failure sample is sealed by cold embedding, and the analysis sample is obtained by cutting and exposing the analysis points according to the sample shape, resulting in most samples being irregular in shape. The existing grinding clamping devices cannot match the irregular shapes of such samples, so the manual clamping and fixing method is used to achieve grinding and polishing. This method has poor safety, quality and low efficiency, and may occur: the sample is too small and easy to hurt the hand during the grinding process; the sample is unevenly stressed, resulting in poor grinding effect of the failure point and requiring rework, and repeated grinding is very time-consuming; only one sample can be fixed with one hand, and the grinding efficiency is very low.

[0052] The existing grinding clamping device cannot meet the clamping requirements for the irregular shape of the PCBA sample. How to clamp and fix the irregular-shaped sample to improve the grinding safety, quality, and efficiency is an urgent problem to be solved.

[0053] An embodiment of the present invention will be described with reference to Figures 1 - 5 as shown, a clamping device is provided.

[0054] According to an embodiment of the present invention, please refer to Figure 1 and Figure 2 The clamping device according to the embodiment of the present invention includes: a bottom plate 100, a pressing member 200 disposed on the bottom plate 100. An accommodating space for placing the workpiece to be clamped is formed in the middle of the pressing member 200, and the pressing member 200 is adapted to deform under an external force; a plurality of clamping components 300 are arranged along the circumferential direction of the pressing member 200, and the clamping components 300 are movably disposed on the bottom plate 100. The clamping components 300 are adapted to move towards the pressing member 200 to push the inner wall of the pressing member 200 into contact with the workpiece to be clamped (A in the figure represents the workpiece to be clamped).

[0055] It can be understood that in this embodiment, the bottom plate 100 is used to provide stable support for the other components. A space is left in the middle of the pressing member 200 for placing the workpiece to be clamped. The pressing member 200 can be made of a material with certain elasticity, so that the pressing member 200 can deform under an external force. Specifically, when the clamping component 300 moves, it can push the pressing member 200 to deform, so that the inner wall of the pressing member 200 contacts the workpiece to be clamped, and the deformation of the pressing member 200 is used to adapt to the clamping and fixing of workpieces to be clamped with different shapes and sizes.

[0056] It should be noted that the workpiece to be clamped can be a circuit board or other workpieces that need to be clamped. The specific type of the workpiece to be clamped in this embodiment is not specifically limited.

[0057] Exemplarily, the pressing member 200 is annular, that is, the pressing member 200 can form an open-loop structure or a closed-loop structure. The shape of the pressing member 200 can be circular or rectangular, etc., and can be designed according to actual needs. This embodiment does not specifically limit this.

[0058] The plurality of clamping components 300 can be spaced along the circumferential direction of the pressing member 200. On the one hand, it ensures that the workpiece to be clamped is uniformly clamped in multiple directions. On the other hand, it can make the circumferential direction of the pressing member 200 fully deform to adapt to the shape of the workpiece to be clamped. This uniform clamping force can not only effectively prevent the workpiece to be clamped from shifting or sliding during the processing, but also ensure close fitting between the workpiece to be clamped and the inner wall of the pressing member 200, further improving the clamping stability.

[0059] During the use of the clamping device, the workpiece to be clamped can be first placed in the middle of the pressing member 200, and then the position and moving distance of the clamping assembly 300 can be adjusted according to the shape and size of the workpiece to be clamped. By adjusting the clamping assembly 300 to move towards the pressing member 200, the inner wall of the pressing member 200 is pushed to deform and abut against the workpiece to be clamped. Since the clamping assemblies 300 are circumferentially spaced along the pressing member 200, the circumferential direction of the pressing member 200 can be fully deformed, so as to adapt to the shape of the workpiece to be clamped. When the inner wall of the pressing member 200 is in close fit with the workpiece to be clamped, the clamping assembly 300 fixes the workpiece to be clamped in the middle position. At this time, the workpiece to be clamped is subjected to uniform clamping force in multiple directions, ensuring its stability during processing, testing or analysis. After the workpiece to be clamped is stably clamped, subsequent processing, testing or analysis work can be carried out.

[0060] After the processing, testing or analysis is completed, by moving the clamping assembly 300 in the reverse direction, the inner wall of the pressing member 200 is restored to its original state. The workpiece to be clamped is taken out to complete the entire clamping process. Through the above structure and solution, the clamping device can stably clamp workpieces to be clamped with different shapes and sizes, ensure the stability of the workpieces to be clamped during processing, testing or analysis, and improve production efficiency and product quality.

[0061] In an alternative embodiment, the number of the clamping assemblies 300 is not less than 4, and can be increased or decreased as required according to the specific number of sides of the sample workpiece to be clamped. This embodiment does not make specific limitations in this regard.

[0062] In this embodiment, the shape of the pressing member 200 can be triangular, circular, quadrilateral, pentagonal, etc. Optionally, the shape of the pressing member 200 is circular, which can better adapt to workpieces to be clamped with different shapes.

[0063] The clamping device of the embodiment of the present utility model includes a bottom plate 100, a pressing member 200 and a plurality of clamping assemblies 300. The pressing member 200 is arranged on the bottom plate 100. The middle part of the pressing member 200 is suitable for placing the workpiece to be clamped. The pressing member 200 is suitable for deforming under an external force. The plurality of clamping assemblies 300 are arranged along the circumferential direction of the pressing member 200, and the clamping assemblies 300 are movably arranged on the bottom plate 100. The clamping assemblies 300 are suitable for moving towards the pressing member 200 to push the inner wall of the pressing member 200 to abut against the workpiece to be clamped. By arranging the pressing member 200 and the plurality of clamping assemblies 300, the pressing member 200 is suitable for deforming under an external force. When the workpiece to be clamped is placed in the middle of the pressing member 200, the clamping assembly 300 can move towards the pressing member 200 to push the inner wall of the pressing member 200 to abut against the workpiece to be clamped, so that the pressing member 200 deforms and matches the shape of the workpiece to be clamped, realizing the clamping of workpieces to be clamped with different shapes, and improving the clamping stability and safety.

[0064] According to an embodiment of the present utility model, the clamping device includes a first adjustment structure and a second adjustment structure. The first adjustment structure connects the clamping assembly 300 and the base plate 100, and is used to adjust the distance between the clamping assembly 300 and the workpiece to be clamped; the second adjustment structure connects the clamping assembly 300 and the base plate 100, and the second adjustment structure is movably arranged on the base plate 100 for adjusting the clamping direction of the clamping assembly 300 relative to the workpiece to be clamped.

[0065] It can be understood that in this embodiment, the clamping assembly 300 and the base plate 100 are connected through the first adjustment structure. The main function of the first adjustment structure is to adjust the distance between the clamping assembly 300 and the workpiece to be clamped. Through this adjustment, the clamping assembly 300 can move away from or close to the workpiece to be clamped to clamp or release the workpiece to be clamped. For example, the first adjustment structure can be a linear drive mechanism such as an electric push rod, a pneumatic push rod, a lead screw mechanism or a hydraulic cylinder, which drives the clamping assembly 300 to move. At the same time, a slide rail or a guide groove can be installed on the base plate 100, and the clamping assembly 300 is slidably arranged on the slide rail or the guide groove to provide a guiding function for the movement of the clamping assembly 300 and prevent deviation or shaking.

[0066] The clamping assembly 300 and the base plate 100 are also connected through the second adjustment structure. The main function of the second adjustment structure is to adjust the clamping direction of the clamping assembly 300 relative to the workpiece to be clamped to meet the clamping requirements of workpieces to be clamped with different shapes and directions.

[0067] For example, a rotating base or a rotating platform can be installed at the bottom of the clamping assembly 300 to enable it to rotate around one or more rotation axes. The rotation of the clamping assembly 300 can be realized by manual operation, an electric motor or a pneumatic motor drive, etc. to realize the rotational movement of the clamping assembly 300.

[0068] Furthermore, the second adjustment structure can also be provided with an angle locking mechanism, such as a locking screw, a buckle or a positioning pin, to ensure that the clamping assembly 300 remains stable after being adjusted to the required angle. On the other hand, a slide rail or a guide groove can be installed on the base plate 100 to provide a necessary guiding and supporting structure for the clamping assembly 300 to ensure its stability and accuracy during the rotation process and reduce the friction and resistance during the rotation process.

[0069] According to an embodiment of the present utility model, referring to Figure 1 and Figure 2 as shown, the second adjustment structure includes a chute 111 arranged along the circumference of the base plate 100. The clamping assembly 300 passes through the chute 111, and the clamping assembly 300 is adapted to move along the chute 111.

[0070] It can be understood that in this embodiment, by providing a chute 111 on the bottom plate 100, the chute 111 extends along the circumferential direction of the bottom plate 100. Since the chute 111 extends along the circumferential direction of the bottom plate 100, the clamping assembly 300 can move and adjust its position along the circumferential direction of the crimping member 200. This design enables the clamping assembly 300 to flexibly adapt to workpieces to be clamped with different shapes and sizes, ensuring that the workpieces to be clamped are uniformly clamped in multiple directions.

[0071] The chute 111 not only provides a moving track for the clamping assembly 300, but also ensures the stability and accuracy of the clamping assembly 300 during movement. The guiding function of the chute 111 enables the clamping assembly 300 to accurately move to the required position, thereby achieving effective clamping of the workpiece to be clamped.

[0072] Through the design of the chute 111 and the clamping assembly 300, the clamping device of this embodiment can adapt to workpieces to be clamped with different shapes and sizes. Whether the workpiece to be clamped is circular, square or irregular in shape, the position and moving distance of the clamping assembly 300 can be adjusted to deform the crimping member 200 to match the shape of the workpiece to be clamped. Compared with the clamping assembly 300 set at a fixed position, the clamping stability and reliability are further improved, and a softer contact can be achieved when clamping the workpiece to be clamped, reducing damage and destruction to the workpiece to be clamped.

[0073] According to an embodiment of the present invention, referring to Figures 1 - 3 as shown, the clamping assembly 300 includes a clamping rod 310 and a first pressing plate 320. The first pressing plate 320 is disposed at one end of the clamping rod 310 facing the crimping member 200, and the cross-sectional area of the first pressing plate 320 is larger than that of the clamping rod 310.

[0074] It can be understood that in this embodiment, the clamping rod 310 passes through the bottom plate 100 and can move relative to the bottom plate 100 along the radial direction of the bottom plate 100. A first pressing plate 320 is installed at one end of the clamping rod 310 facing the crimping member 200. The main function is to push the crimping member 200 to deform to adapt to workpieces to be clamped with different shapes and sizes. When the clamping assembly 300 is pushed by the driving mechanism, the first pressing plate 320 will directly contact the inner wall of the crimping member 200 and apply a certain pressure. This pressure will cause the crimping member 200 to deform, so that its inner wall matches the shape of the workpiece to be clamped, achieving a tight clamping effect.

[0075] In this embodiment, the cross-sectional area of the first pressing plate 320 is larger than that of the clamping rod 310. Due to the larger cross-sectional area of the first pressing plate 320, when the clamping rod 310 applies pressure, the pressure can be more evenly distributed on the pressing plate, and then evenly transmitted to the inner wall of the pressing part 200 and the part to be clamped. This can ensure that the part to be clamped is subjected to a uniform and stable clamping force during the clamping process, avoiding deformation or damage of the part to be clamped due to uneven force. And the larger cross-sectional area makes the contact area between the first pressing plate 320 and the inner wall of the pressing part 200 larger, thus increasing the clamping stability. This design helps to prevent the part to be clamped from moving or shaking due to external forces during processing, testing or analysis, ensuring that the part to be clamped always maintains a stable position.

[0076] The first pressing plate 320 can be made of a material with certain elasticity and wear resistance, such as rubber, silica gel, etc. This kind of material can provide a soft contact during the clamping process, reducing damage and scratches to the part to be clamped.

[0077] In an alternative embodiment, the first pressing plate 320 is fixed to the clamping rod 310, and the structure of the entire clamping assembly 300 is very stable, capable of maintaining a stable clamping effect during long-term use. Since there is no need to frequently disassemble and install the pressing plate, this design makes the operation more simple and fast; in another alternative embodiment, the first pressing plate 320 is detachably installed on the clamping rod 310. When it is necessary to clamp parts to be clamped with different sizes or shapes, the first pressing plate 320 can be conveniently disassembled and replaced to meet different requirements. If the pressing plate is damaged or worn, the pressing plate can be replaced separately without replacing the entire clamping assembly 300, reducing the maintenance cost.

[0078] According to an embodiment of the present invention, referring to Figure 1 and Figure 2 as shown, the first adjustment structure includes a first nut 330. The clamping rod 310 is threadedly connected to the bottom plate 100. The first nut 330 is passed through the clamping rod 310, and the first nut 330 is adapted to abut against the bottom plate 100.

[0079] It can be understood that in this embodiment, the clamping rod 310 is threadedly connected through the bottom plate 100. This design enables the clamping rod 310 to move and adjust precisely relative to the bottom plate 100 along the radial direction of the bottom plate 100. It is passed through the clamping rod 310 and matches the thread of the clamping rod 310. When the first nut 330 rotates on the clamping rod 310, it will move along the thread direction of the clamping rod 310 and abut against the bottom plate 100. This design enables the position of the clamping rod 310 relative to the bottom plate 100 to be precisely locked and adjusted.

[0080] When it is necessary to clamp the workpiece to be clamped, first move the clamping rod 310 to an appropriate position. Then rotate the first nut 330 so that it moves along the threaded direction of the clamping rod 310 until it abuts against the bottom plate 100. At this time, the first nut 330 will apply a downward force to fix the clamping rod 310 on the bottom plate 100, and push the crimping part 200 towards the workpiece to be clamped through the first pressing plate 320, realizing the clamping of the workpiece to be clamped.

[0081] Due to the fact that the clamping rod 310 is fixed to the bottom plate 100 by means of a threaded connection and the locking function of the first nut 330, the clamping assembly 300 has high stability, which can ensure that the workpiece to be clamped maintains a stable position during processing, testing or analysis. By rotating the first nut 330, the position of the clamping rod 310 can be conveniently adjusted to adapt to workpieces to be clamped with different sizes and shapes, with high flexibility and adaptability. The structure is simple and easy to disassemble, and can be conveniently operated.

[0082] During the grinding process, since the shapes of PCBA samples are mostly irregular, the clamping force is uneven, and some PCBA samples have poor contact with the grinding disc, resulting in that the PCBA samples do not receive sufficient pressure in the vertical direction during grinding, and there is even no interaction force with the grinding disc, so that they cannot be sufficiently ground.

[0083] According to an embodiment of the present invention, referring to Figure 1 and Figure 4 As shown, the clamping device further includes a top cover 400 and a pressing assembly 500. The top cover 400 is connected above the bottom plate 100, and the pressing assembly 500 is arranged on the top cover 400. The pressing assembly 500 is adapted to lift relative to the top cover 400 to abut against the top surface of the workpiece to be clamped.

[0084] It can be understood that in this embodiment, a top cover 400 and a pressing assembly 500 are arranged above the bottom plate 100, and the pressing assembly 500 can lift relative to the top cover 400, so as to apply pressure to the workpiece to be clamped above the workpiece to be clamped, so that the bottom of the workpiece to be clamped can be in full contact with the grinding disc (not shown in the figure). By adjusting the pressing drive mechanism, the magnitude of the pressure applied by the pressing disc to the workpiece to be clamped can be controlled, so as to ensure full contact between the bottom of the workpiece to be clamped and the grinding disc.

[0085] During the grinding process, the pressing assembly 500 will continuously apply a stable pressure to ensure that the workpiece to be clamped and the grinding disc always maintain close contact, which not only improves the uniformity and quality of grinding, but also effectively avoids the problems of insufficient grinding or damage to the workpiece to be clamped caused by poor contact.

[0086] According to an embodiment of the present invention, referring to Figure 1 and Figure 4As shown, the pressing assembly 500 includes a pressing rod 510, a second pressing plate 520, and a second nut 530. The pressing rod 510 is threadedly connected to the top cover 400. The second pressing plate 520 is fixed to the side of the pressing rod 510 close to the pressing member 200. The second nut 530 is sleeved on the pressing rod 510, and the nut is adapted to abut against the top cover 400.

[0087] It can be understood that in this embodiment, the pressing rod 510 is connected to the top cover 400 by a threaded connection, so that the position of the pressing rod 510 can be precisely adjusted in the vertical direction to adapt to workpieces to be clamped with different thicknesses. The second pressing plate 520 is fixed to the side of the pressing rod 510 close to the pressing member 200. It directly contacts the top surface of the workpiece to be clamped and is used to apply pressure from above. The second nut 530 is sleeved on the pressing rod 510, and its lower surface is adapted to abut against the top cover 400. By rotating the second nut 530, the position of the pressing rod 510 in the vertical direction can be adjusted, and further the magnitude of the pressure applied by the second pressing plate 520 to the workpiece to be clamped can be controlled. This design makes the operation simpler and faster, and at the same time can precisely control the clamping force.

[0088] According to an embodiment of the present invention, referring to Figure 1 and Figure 4 As shown, the cross-sectional area of the second pressing plate 520 is larger than that of the pressing rod 510.

[0089] In this embodiment, the cross-sectional area of the second pressing plate 520 is larger than that of the pressing rod 510. Since the cross-sectional area of the second pressing plate 520 is relatively large, when the pressing rod 510 applies pressure, the pressure can be more evenly distributed on the second pressing plate 520 and then evenly transmitted to the workpiece to be clamped. This can ensure that the workpiece to be clamped is subjected to uniform and stable pressure during the grinding process, and avoid deformation or damage of the workpiece to be clamped due to uneven stress. And the relatively large cross-sectional area makes the contact area between the first pressing plate 320 and the inner wall of the pressing member 200 larger, thereby increasing the stability during the grinding process and achieving sufficient grinding of the workpiece to be clamped.

[0090] Similarly, the second pressing plate 520 can be made of a material with certain elasticity and wear resistance, such as rubber, silica gel, etc. This kind of material can provide a soft contact during the clamping process and reduce damage and scratches to the workpiece to be clamped.

[0091] In an alternative embodiment, the top and bottom surfaces of the first pressing plate 320 and the second pressing plate 520 are flat surfaces. The flat pressing plate design enables the pressure to be evenly distributed on the workpiece to be clamped, which can ensure that the workpiece to be clamped is uniformly and stably clamped during the grinding process, and avoid processing errors caused by uneven stress.

[0092] According to an embodiment of the present invention, referring to Figure 1 and Figure 5As shown, the bottom plate 100 includes a first annular ring 110 and a second annular ring 120 sleeved outside the first annular ring 110. The first annular ring 110 is connected to the second annular ring 120. The clamping assembly 300 passes through the first annular ring 110, and an avoidance groove 130 for avoiding the clamping assembly 300 is formed between the first annular ring 110 and the second annular ring 120.

[0093] It can be understood that in this embodiment, the clamping assembly 300 passes through the first annular ring 110, and an avoidance groove 130 is formed between the first annular ring 110 and the second annular ring 120. The avoidance groove 130 provides sufficient space for the clamping assembly 300, reduces interference with the bottom plate 100, makes the passing and installation of the clamping assembly 300 smoother. Due to the existence of the avoidance groove 130, it is more convenient to install and adjust the clamping assembly 300 at different positions in the circumferential direction to ensure that the workpiece to be clamped is fully clamped by the clamping assembly 300.

[0094] According to an embodiment of the present invention, referring to Figure 1 and Figure 4 As shown, the first annular ring 110 and the second annular ring 120 are connected by a plurality of rib plates 140, and the plurality of rib plates 140 are arranged at intervals along the circumferential direction of the bottom plate 100; and / or, the top cover 400 and the bottom plate 100 are connected by a plurality of connecting rods 150, and the plurality of connecting rods 150 are arranged at intervals along the circumferential direction of the bottom plate 100.

[0095] In this embodiment, the rib plates 140 and the connecting rods 150 serve as structural supports, which can effectively disperse and bear various stresses and loads generated by the workpiece to be clamped, the pressing assembly 500 and the processing process, making the connection between the bottom plate 100, the top cover 400 and them more stable, and improving the structural strength of the entire clamping device.

[0096] The plurality of rib plates 140 are arranged at intervals along the circumferential direction of the bottom plate 100, forming a stable support network, enhancing the rigidity of the bottom plate 100 and reducing deformation caused by external forces. The connecting rods 150 also play a role in enhancing the rigidity between the top cover 400 and the bottom plate 100, and improving the service life of the clamping device.

[0097] According to an embodiment of the present invention, referring to Figure 1 As shown, the crimping member 200 is fixed to at least one of the clamping assemblies 300 to prevent the crimping member 200 from detaching from the clamping device when there is no sample workpiece to be clamped. In this way, when replacing or adjusting the workpiece to be clamped, due to the fixed design of the crimping member 200 and the clamping assembly 300, the operator does not need to worry about the problem of the fixing member falling off, which makes the operation process simpler and faster, and improves work efficiency.

[0098] To achieve the fixed design of the crimping part 200 and the clamping component 300, various connection methods can be adopted, such as bolt connection, welding, snap connection, etc. This embodiment does not make specific limitations on this.

[0099] According to an embodiment of the present invention, the crimping part 200 is made of rubber, which has good elasticity and deformation ability. This enables the crimping part 200 to easily adapt to samples of different shapes and sizes, ensuring tight fit and uniform force during the clamping process. Whether it is a circular, square or irregularly shaped sample, the soft material crimping part 200 can provide effective clamping support, ensuring stable clamping and not causing damage to the part to be clamped.

[0100] Moreover, the rubber material has a relatively large friction coefficient. During the clamping process, the frictional force between the crimping part 200 and the sample is relatively large. This relatively large frictional resistance can ensure that the sample is not prone to sliding or displacement when subjected to axial or radial forces, thereby improving the stability and reliability of the clamping. Due to the good elasticity and deformation ability of the soft fixed ring made of rubber material, it can provide uniform clamping force in the axial and radial directions. This all-round clamping effect can not only ensure the stability of the sample during the processing, but also effectively prevent the sample from being damaged or deformed during the clamping process.

[0101] Finally, it should be noted that the above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should all be covered by the protection scope of the present invention.

Claims

1. A clamping device, characterized in that, Comprising: A bottom plate (100); A crimping member (200) disposed on the bottom plate (100), with an accommodation space for placing the workpiece to be clamped formed in the middle of the crimping member (200), and the crimping member (200) being adapted to deform under an external force; A plurality of clamping assemblies (300) arranged circumferentially along the crimping member (200), and the clamping assemblies (300) being movably disposed on the bottom plate (100), the clamping assemblies (300) being adapted to move towards the crimping member (200) to push the inner wall of the crimping member (200) into contact with the workpiece to be clamped.

2. The clamping device according to claim 1, wherein, The clamping device includes: A first adjustment structure connecting the clamping assembly (300) and the bottom plate (100), the first adjustment structure being used to adjust the distance between the clamping assembly (300) and the workpiece to be clamped; A second adjustment structure connecting the clamping assembly (300) and the bottom plate (100), the second adjustment structure being movably disposed on the bottom plate (100) and used to adjust the clamping direction of the clamping assembly (300) relative to the workpiece to be clamped.

3. The clamping device according to claim 2, wherein The second adjustment structure includes a chute (111) arranged circumferentially along the bottom plate (100), the clamping assembly (300) passing through the chute (111), and the clamping assembly (300) being adapted to move along the chute (111).

4. The clamping device according to claim 2, wherein, The clamping assembly (300) includes: A clamping rod (310); A first pressing plate (320) disposed at one end of the clamping rod (310) facing the crimping member (200), the cross-sectional area of the first pressing plate (320) being larger than the cross-sectional area of the clamping rod (310).

5. The clamping device according to claim 4, wherein The first adjustment structure includes a first nut (330), the clamping rod (310) being threadedly connected to the bottom plate (100), the first nut (330) passing through the clamping rod (310), and the first nut (330) being adapted to abut against the bottom plate (100).

6. The clamping device according to claim 1, characterized in that, The clamping device further includes: A top cover (400) connected above the bottom plate (100); A pressing assembly (500) disposed on the top cover (400), the pressing assembly (500) being adapted to move up and down relative to the top cover (400) to abut against the top surface of the workpiece to be clamped.

7. The clamping device according to claim 6, wherein, The pressing assembly (500) includes: A pressing rod (510) threadedly connected to the top cover (400); A second pressing plate (520) fixed to one side of the pressing rod (510) close to the crimping member (200); A second nut (530) sleeved on the pressing rod (510), and the nut being adapted to abut against the top cover (400).

8. The clamping device according to claim 7, characterized in that, The cross-sectional area of the second pressing plate (520) is larger than the cross-sectional area of the pressing rod (510).

9. The clamping device according to claim 6, wherein The bottom plate (100) includes a first annular ring (110) and a second annular ring (120) sleeved outside the first annular ring (110). The first annular ring (110) is connected to the second annular ring (120). The clamping assembly (300) passes through the first annular ring (110), and an avoidance groove (130) for avoiding the clamping assembly (300) is formed between the first annular ring (110) and the second annular ring (120).

10. The clamping device according to claim 9, wherein the first annular ring (110) and the second annular ring (120) are connected by a plurality of rib plates (140), and the plurality of rib plates (140) are arranged at intervals along the circumferential direction of the bottom plate (100); and / or, the top cover (400) and the bottom plate (100) are connected by a plurality of connecting rods (150), and the plurality of connecting rods (150) are arranged at intervals along the circumferential direction of the bottom plate (100).

11. The clamping device according to any one of claims 1-10, characterized in that, The crimping member (200) is fixed to at least one of the clamping assemblies (300).

12. The clamping device according to any one of claims 1-10, characterized in that, The crimping member (200) is made of rubber.

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