Clamping device and clamping system for workpiece

Abstract

The utility model provides a clamping device and a clamping system for a workpiece. The clamping device comprises a base, an assembling groove, a first clamping block, a second clamping block and a pressing block. The assembling groove is formed in the base, a first groove and a second groove are formed in the two opposite side walls of the assembling groove respectively, the inner wall of the first groove is a first cambered surface, and the inner wall of the second groove is a second cambered surface. A third groove is formed in one side of the first clamping block and provided with a third cambered surface which is the same as the first cambered surface in shape and opposite to the first cambered surface in direction, and the edge of the first cambered surface and the edge of the third cambered surface are in butt joint to form a first clamping groove. A fourth groove is formed in one side of the second clamping block and provided with a fourth cambered surface which is the same as the second cambered surface in shape and opposite to the second cambered surface in direction, and the edges of the second cambered surface and the fourth cambered surface are in butt joint to form a second clamping groove. The pressing block is detachably installed in the assembling groove, located between the first clamping block and the second clamping block and suitable for pushing the first clamping block in the direction of the first groove and pushing the second clamping block in the direction of the second groove.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a clamping device and a clamping system for a workpiece. Background Art

[0002] Figure 1 A typical load-bearing support member of a guide device for a missile launch tube is shown. The load-bearing support member of the guide device for a missile launch tube is made of a titanium alloy material. The load-bearing support member of the guide device for a missile launch tube is a cylinder, comprising a first portion having a first diameter and a second portion having a second diameter. The first portion and the second portion are coaxial and the second diameter of the second portion is greater than the first diameter of the first portion. The top surface of the second portion is a concave partial spherical surface.

[0003] At present, the conventional clamping method for processing the load-bearing support of the guide device of such missile launch tubes is to use a three-jaw chuck as a clamping device for processing. This clamping method can only clamp one workpiece at a time, and the position of each clamping is inconsistent, resulting in the need to reposition the tool during processing. Therefore, this clamping method is inefficient, has poor consistency, and has a low fault tolerance rate. Utility Model Content

[0004] Therefore, the utility model provides a clamping device and a clamping system for a workpiece, which are used to solve the problems of low efficiency, poor consistency and low fault tolerance of the clamping method in the prior art.

[0005] In a first aspect, the utility model provides a clamping device for a workpiece, comprising:

[0006] Base;

[0007] An assembly groove is provided on the base, and two opposite side walls of the assembly groove are respectively provided with a first groove and a second groove, the inner wall of the first groove is a first arc surface, and the inner wall of the second groove is a second arc surface;

[0008] A first clamping block, one side of which has a third groove, the third groove having a third arc surface with the same shape as the first arc surface and opposite direction, the first arc surface and the third arc surface are butted against each other to form a first clamping groove;

[0009] A second clamping block, one side of which has a fourth groove, wherein the fourth groove has a fourth arc surface which is the same shape as the second arc surface and opposite in direction, and the second arc surface is butted against an edge of the fourth arc surface to form a second clamping groove;

[0010] The pressing block is detachably installed in the assembly groove and is located between the first clamping block and the second clamping block, and is suitable for pushing the first clamping block toward the first groove and pushing the second clamping block toward the second groove.

[0011] Optionally, the side of the first clamping block opposite to the third groove is a first inclined surface, and the side of the second clamping block opposite to the fourth groove is a second inclined surface; the pressing block has a third inclined surface and a fourth inclined surface respectively contacting and cooperating with the first inclined surface and the second inclined surface, and the cross-sectional area of ​​the pressing block gradually decreases from top to bottom.

[0012] Optionally, a first protrusion is provided on the first inclined surface, and a second protrusion is provided on the second inclined surface. The first protrusion and the second protrusion are both in the shape of long strips and extend from top to bottom along the first inclined surface and the second inclined surface respectively; the third inclined surface and the fourth inclined surface are respectively provided with a first guide groove cooperating with the first protrusion, and a second guide groove cooperating with the second protrusion.

[0013] Optionally, an angle between the first inclined surface and the bottom surface of the first clamping block is in a range of 30 degrees to 60 degrees, and an angle between the second inclined surface and the bottom surface of the second clamping block is in a range of 30 degrees to 60 degrees.

[0014] Optionally, the bottom surface of the first groove is higher than the first dimension of the assembly groove, the bottom wall thickness of the third groove is the first dimension, the bottom surface of the second groove is higher than the second dimension of the assembly groove, and the bottom wall thickness of the fourth groove is the second dimension.

[0015] Optionally, an opening is provided on the bottom wall of the assembly groove, a through hole corresponding to the position of the opening is provided on the pressing block, and the fastener passes through the through hole and enters the opening.

[0016] Optionally, the fastener comprises a head and a threaded shank, the head is adapted to be pressed against the top surface of the pressing block, and the opening is provided with an internal thread matching the external thread of the threaded shank.

[0017] Optionally, the first clamping groove is a cylindrical structure, and the second clamping groove is a cylindrical structure.

[0018] Optionally, the base is made of 45 steel, and the pressing block is made of 6061 aluminum alloy.

[0019] In a second aspect, the utility model provides a clamping system for a workpiece, comprising a plurality of the above-mentioned clamping devices.

[0020] The utility model has the following advantages:

[0021] The utility model provides a clamping device for a workpiece, comprising: a base, an assembly groove, a first clamping block, a second clamping block and a pressure block. The assembly groove is provided on the base, and the two opposite side walls of the assembly groove are respectively provided with a first groove and a second groove, the inner wall of the first groove is a first arc surface, and the inner wall of the second groove is a second arc surface. The first clamping block has a third groove on one side, and the third groove has a third arc surface with the same shape and opposite direction as the first arc surface, and the edges of the first arc surface and the third arc surface are butted together to form a first clamping groove. The second clamping block has a fourth groove on one side, and the fourth groove has a fourth arc surface with the same shape and opposite direction as the second arc surface, and the edges of the second arc surface and the fourth arc surface are butted together to form a second clamping groove. The pressure block is detachably installed in the assembly groove and is located between the first clamping block and the second clamping block, and is suitable for pushing the first clamping block in the direction of the first groove, and pushing the second clamping block in the direction of the second groove.

[0022] The two workpieces can be assembled in the first groove and the second groove respectively, and the third groove of the first clamp block is aligned with the first groove, and the fourth groove of the second clamp block is aligned with the second groove. In this way, the two workpieces can be pre-clamped respectively, and then the pressure block is pressed between the first clamp block and the second clamp block. The first clamp block and the second clamp block are respectively moved toward the first groove and the second groove by the extrusion force from the pressure block, thereby clamping the two workpieces respectively, and then the next step of processing can be carried out. Such a setting can clamp two workpieces at the same time, and the two workpieces are located on both sides of the assembly groove, which can realize simultaneous processing, improve processing efficiency, reduce the dimensional tolerance of multiple workpieces, and improve fault tolerance and consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic structural diagram of a workpiece to be processed is shown;

[0025] Figure 2 A schematic structural diagram of the clamping device in this embodiment is shown;

[0026] Figure 3 A schematic cross-sectional view of the clamping device in this embodiment is shown;

[0027] Figure 4 A schematic structural diagram of the base in this embodiment is shown;

[0028] Figure 5A schematic structural diagram of the first clamping block in this embodiment is shown;

[0029] Figure 6 The schematic diagram of the structure of the pressing block in this embodiment is shown;

[0030] Figure 7 A schematic diagram of the structure of the fastener in this embodiment is shown;

[0031] Figure 8 A reference diagram showing a state in which the clamping device in this embodiment clamps a workpiece;

[0032] Fig. 9 Shows Figure 8 A schematic diagram of the cross-sectional structure of the middle gripping device;

[0033] Fig.10 A schematic structural diagram of the clamping system in this embodiment is shown.

[0034] Description of reference numerals:

[0035] 100, workpiece; 110, first part; 120, second part; 122, top surface; 200, clamping device; 210, base; 211, base surface; 212, top surface; 213, first groove; 214, second groove; 2151; first arc surface; 2152, second arc surface; 218, bottom wall; 219, opening; 220, assembly groove; 230, first clamping block; 231, lower surface of clamping block; 232, clamping block Upper surface; 233, vertical wall; 234, first inclined surface; 235, third groove; 2351, third arc surface; 236, first protrusion; 250, second clamp; 270, pressure block; 271, bottom surface; 272, top surface; 273, third inclined surface; 274, fourth inclined surface; 275, through hole; 276, first guide groove; 277, second guide groove; 290, fastener; 291, head; 292, threaded rod. DETAILED DESCRIPTION

[0036] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0040] Figure 1 A workpiece 100 to be processed is shown, and the workpiece 100 may be a load-bearing support member of a missile launch tube guide device. The workpiece 100 may be a cylinder, including a first portion 110 having a first diameter and a second portion 120 having a second diameter, the first portion 110 and the second portion 120 being coaxial, and the second diameter of the second portion 120 being greater than the first diameter of the first portion 110. The top surface 122 of the second portion 120 may be a concave partial spherical surface. The first portion 110 of the workpiece 100 may be clamped to facilitate processing of other portions of the workpiece 100. The workpiece 100 may be made of a titanium alloy material.

[0041] Conventional clamping devices can only clamp one workpiece 100 at a time, which leads to low efficiency, poor consistency, and low fault tolerance during mass processing.

[0042] In order to solve the above problems, the utility model provides a clamping device and a clamping system for a workpiece. Figures 2 to 10 And embodiments are described in detail.

[0043] like Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, in this embodiment, a clamping device 200 for a workpiece is provided, including: a base 210, an assembly groove 220, a first clamping block 230, a second clamping block 250 and a pressing block 270.

[0044] The assembly groove 220 is provided on the base 210. The assembly groove 220 is a rectangular through groove provided on the top surface 212 of the base 210. Two opposite vertical side walls are formed between the assembly groove 220 and the top surface 212. The two opposite side walls of the assembly groove 220 are respectively provided with a first groove 213 and a second groove 214. The inner wall of the first groove 213 is a first arc surface 2151, and the inner wall of the second groove 214 is a second arc surface 2152. The base surface 211 of the base 210 is a plane.

[0045] The first clamping block 230 has a third groove 235 on one side, and the third groove 235 has a third arc surface 2351 with the same shape as the first arc surface and opposite direction, and the edges of the first arc surface 2151 and the third arc surface 2351 are butted together to form a first clamping groove. The first clamping block 230 has a vertical wall surface 233 located at the edge of the third groove 235, and the vertical wall surface 233 can contact and fit with the vertical side walls on both sides of the edge of the first groove 213.

[0046] The second clamping block 250 has a fourth groove on one side, and the fourth groove has a fourth arc surface with the same shape and opposite direction as the second arc surface 2152, and the second arc surface 2152 is connected with the edge of the fourth arc surface to form a second clamping groove. The second clamping block 250 has a vertical wall surface located at the edge of the fourth groove, and the vertical wall surface can contact and fit with the vertical side walls on both sides of the edge of the second groove 214.

[0047] The pressing block 270 is detachably installed in the assembly groove 220 and is located between the first clamp block 230 and the second clamp block 250. When the pressing block 270 is installed in the assembly groove 220, the side walls on the opposite sides are in contact with the wall surface of the first clamp block 230 and the wall surface of the second clamp block 250 at the same time, respectively, and is suitable for pushing the first clamp block 230 in the direction of the first groove 213, and pushing the second clamp block 250 in the direction of the second groove 214.

[0048] You can Figure 1The two workpieces 100 shown are respectively assembled in the first groove 213 and the second groove 214, and the third groove 235 of the first clamp 230 is aligned with the first groove 23, and the fourth groove of the second clamp 250 is aligned with the second groove 214, so that the two workpieces 100 can be pre-clamped respectively, and then the pressing block 270 is pressed between the first clamp 230 and the second clamp 250. The first clamp 230 and the second clamp 250 are respectively moved towards the first groove 213 and the second groove 214 by the squeezing force from the pressing block 270, thereby clamping the two workpieces 100 respectively, and then the next step of processing can be carried out. Such a setting can clamp two workpieces 100 at the same time, and the two workpieces 100 are located on both sides of the assembly groove 220, which can realize simultaneous processing, improve processing efficiency, reduce the dimensional tolerance of multiple workpieces, and improve fault tolerance and consistency.

[0049] like Figure 5 and Figure 6 As shown, in this embodiment, the side of the first clamping block 230 that is away from the third groove 235 is the first inclined surface 234, and the side of the second clamping block 250 that is away from the fourth groove is the second inclined surface. The pressing block 270 has a third inclined surface 273 and a fourth inclined surface 274 that are in contact with the first inclined surface 234 and the second inclined surface, respectively, and the cross-sectional area of ​​the pressing block 270 gradually decreases from top to bottom.

[0050] After the first clamp block 230 and the second clamp block 250 are installed in place, the pressing block 270 can be pressed between the first clamp block 230 and the second clamp block 250 along the first inclined surface 234 and the second inclined surface. In this process, the third inclined surface 273 and the fourth inclined surface 274 of the pressing block 270 will gradually increase the thrust on the first inclined surface 234 and the second inclined surface, so that the first clamp block 230 and the second clamp block 250 are firmly pressed on the corresponding workpiece 100, thereby completing the clamping of the workpiece 100. After the clamping is completed, the clamping block upper surface 232 of the first clamp block 230 is flush with the top surface 212 of the base 210, and the clamping block lower surface 231 of the first clamp block 230 is tightly attached to the bottom wall 218 of the assembly groove 220. The second clamp block 250 also has the same pressing effect, thereby improving the clamping stability of the two workpieces 100, so that the two workpieces 100 are not easy to escape from the first clamping groove and the second clamping groove.

[0051] like Figure 5 and Figure 6As shown, in this embodiment, a first protrusion 236 is provided on the first inclined surface 234, and a second protrusion is provided on the second inclined surface. The first protrusion 236 and the second protrusion are both in the shape of long strips and extend from top to bottom along the first inclined surface 234 and the second inclined surface respectively. The third inclined surface 273 and the fourth inclined surface 274 are respectively provided with a first guide groove 276 that cooperates with the first protrusion 236, and a second guide groove 277 that cooperates with the second protrusion. The first protrusion 236 and the first guide groove 276 are guided and cooperated, and the second protrusion and the second guide groove 277 are guided and cooperated, which is conducive to positioning the installation position of the pressing block 270, and is also conducive to the sliding of the pressing block 270, simplifying the difficulty of installation. In addition, since the first clamping block 230 and the second clamping block 250 are tightly fitted with the workpiece through their respective grooves, the first protrusion 236 and the first guide groove 276 as well as the second protrusion and the second guide groove 277 can also limit the pressing block 270 to prevent the pressing block 270 from being displaced in the horizontal direction perpendicular to the line connecting the first clamping block 230 and the second clamping block 250, thereby improving the stability of subsequent processing.

[0052] like Figure 5 As shown, in this embodiment, the angle between the first inclined surface 234 and the lower surface 231 of the first clamping block 230 is in the range of 30 to 60 degrees, for example, it can be 35 degrees, 40 degrees, 45 degrees, 50 degrees or other angles within the above range, and similarly, the angle between the second inclined surface and the bottom surface of the second clamping block 250 is in the range of 30 to 60 degrees. The inclination degrees of the inclined surfaces of the first clamping block 230 and the second clamping block 250 can be the same or different, and can be selected according to actual conditions.

[0053] The inclination angles of the third inclined surface 273 and the fourth inclined surface 274 of the pressing block 270 can be determined according to the corresponding first inclined surface 234 and second inclined surface, respectively, to ensure that after the pressing block 270 is installed, the top surface 272 of the pressing block 270 is flush with or parallel to the clamping block upper surface 232 of the first clamping block 230 and flush with or parallel to the clamping block upper surface of the second clamping block. For example, after the pressing block 270 is installed in place, the height of the top surface 272 of the pressing block 270 can be slightly higher than the height of the clamping block upper surfaces of the first clamping block 230 and the second clamping block 250, and at the same time, there is a certain distance between the bottom surface 271 of the pressing block 270 and the bottom wall 218 of the assembly groove 220, so that the pressing block 270 can continue to press down a certain distance, so as to further move downward and further press the first clamping block 230 and the second clamping block 250.

[0054] like Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, in the present embodiment, the bottom surface 2131 of the first groove 213 is higher than the first dimension of the assembly groove 220, that is, the distance in the height direction between the bottom surface 2131 of the first groove 213 and the bottom wall surface 218 of the assembly groove 220 is the first dimension, and the bottom wall thickness of the third groove 235 is the first dimension. This arrangement can ensure that after the third groove 235 is placed in the assembly groove 220, the inner bottom wall of the third groove 235 is flush with the bottom surface 2131 of the first groove 213, thereby enabling the first groove 213 and the third groove 235 to be fully fitted with the first part 110 of the workpiece 100, thereby improving the clamping effect of the first groove 213 and the third groove 235 on the workpiece, and preventing the workpiece 100 from shaking during the processing.

[0055] By the same token, the bottom surface of the second groove 214 is higher than the second dimension of the assembly groove 220, that is, the distance between the bottom surface of the second groove 214 and the bottom wall 218 of the assembly groove 220 in the height direction is the second dimension, and the second dimension can be the same as the first dimension mentioned above. The shape of the second groove 214 is also the same as the shape of the first groove 213, and the bottom wall thickness of the fourth groove is the second dimension. With this arrangement, the cooperation between the second groove 214 and the fourth groove can also stably clamp the workpiece 100.

[0056] like Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in this embodiment, the bottom wall 218 of the assembly groove 220 is provided with an opening 219, the pressing block 270 is provided with a through hole 275 corresponding to the position of the opening 219, and the fastener 290 passes through the through hole 275 and enters the opening 219. The fastener 290 can gradually push the pressing block 270 downward, so that the pressing block 270 can press the first clamping block 230 and the second clamping block 250.

[0057] like Figure 7 As shown, in this embodiment, the fastener 290 includes a head 291 and a threaded rod 292, the head 291 is suitable for being pressed against the top surface 272 of the pressing block 270, the opening 219 is provided with an internal thread that matches the external thread of the threaded rod 292, the threaded rod 292 is screwed into the opening 219 after passing through the through hole 275, the head 291 gradually applies pressure to the pressing block 270, the pressing block 270 moves downward and squeezes the first clamping block 230 and the second clamping block 250, thereby simplifying the structure and the method of applying pressure.

[0058] like Figure 2As shown, in this embodiment, the first clamping groove is a cylindrical structure, and the second clamping groove is a cylindrical structure. The first clamping groove is composed of the first groove 213 and the third groove 235, and the second clamping groove is composed of the second groove 214 and the fourth groove. The cylindrical structure can better fit the outer edge of the corresponding clamping part of the workpiece. The cross-sectional shape of the first clamping groove and the second clamping groove can be rectangular, circular, diamond or irregular special-shaped structures, which can be determined according to the cross-sectional shape of the clamping part corresponding to the workpiece. Such a setting can make the inner wall of the first clamping groove and the second clamping groove more fit the outer edge of the corresponding clamping part of the workpiece, improve the stability of clamping, and avoid shaking during processing.

[0059] like Figure 8 and Fig. 9 The reference diagram shown is for simultaneously clamping two workpieces 100, where workpiece 100-1 is clamped in the first clamping groove and workpiece 100-2 is clamped in the second clamping groove. The side walls and bottom walls of the first parts of the two workpieces are completely wrapped, avoiding movement and tilting during subsequent processing, thereby improving the processing effect, reducing production errors, and improving the yield rate.

[0060] In this embodiment, the base is made of 45# steel to ensure the durability of the clamping device. The pressure block is made of 6061 aluminum alloy, the first clamping block 230 and the second clamping block 250 are made of 6061 aluminum alloy, and the contact surfaces of the first clamping block 230 and the second clamping block 250 corresponding to the workpiece are contoured surfaces, so that the clamping device can provide sufficient clamping force, but at the same time will not clamp the clamped workpiece. In addition, for workpieces of different sizes, the base and clamping block that match them can be replaced, so that the clamping device can be suitable for processing different workpieces.

[0061] like Fig.10 As shown, in a second aspect, the utility model provides a clamping system for a workpiece, comprising a plurality of the above-mentioned clamping devices 200. The composition, connection relationship and beneficial effects of the clamping devices 200 are exactly the same as those described above.

[0062] In this embodiment, in addition to the clamping device 200 being able to clamp two workpieces 100, multiple clamping devices 200 can also be arranged in a one-dimensional array or a two-dimensional array to further increase the number of clamped workpieces. For example, it can be a 2*4 array, including two rows, each row is provided with four clamping devices 200, thereby clamping 16 workpieces 100, further improving the processing efficiency. In addition, it can also be a 1*4 array, a 1*8 array, a 2*2 array, a 2*6 array, a 3*3 array, a 3*6 array, etc., which can be flexibly arranged according to the number of workpieces to be processed.

[0063] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A clamping device for a workpiece, characterized in that: include: Base (210); An assembly groove (220) is provided on the base (210), and two opposite side walls of the assembly groove (220) are respectively provided with a first groove (213) and a second groove (214), the inner wall of the first groove (213) is a first arc surface (2151), and the inner wall of the second groove (214) is a second arc surface (2152); A first clamping block (230) has a third groove (235) on one side, wherein the third groove (235) has a third curved surface (2351) having the same shape as the first curved surface (2151) and opposite direction, and the edges of the first curved surface (2151) and the third curved surface (2351) are butted against each other to form a first clamping groove; The second clamping block (250) has a fourth groove on one side, the fourth groove has a fourth arc surface with the same shape as the second arc surface (2152) and opposite direction, and the second arc surface (2152) is butted against the edge of the fourth arc surface to form a second clamping groove; The pressing block (270) is detachably mounted in the assembly groove (220) and is located between the first clamping block (230) and the second clamping block (250), and is suitable for pushing the first clamping block (230) in the direction of the first groove (213) and pushing the second clamping block (250) in the direction of the second groove (214).

2. The clamping device according to claim 1, characterized in that: The side of the first clamping block (230) that is away from the third groove (235) is a first inclined surface (234), and the side of the second clamping block (250) that is away from the fourth groove is a second inclined surface; the pressing block (270) has a third inclined surface (273) and a fourth inclined surface (274) that are in contact with the first inclined surface (234) and the second inclined surface, respectively, and the cross-sectional area of ​​the pressing block (270) gradually decreases from top to bottom.

3. The clamping device according to claim 2, characterized in that: The first inclined surface (234) is provided with a first protrusion (236), and the second inclined surface is provided with a second protrusion. The first protrusion (236) and the second protrusion are both in the shape of long strips and extend from top to bottom along the first inclined surface (234) and the second inclined surface respectively. The third inclined surface (273) and the fourth inclined surface (274) are respectively provided with a first guide groove (276) cooperating with the first protrusion (236), and a second guide groove (277) cooperating with the second protrusion.

4. The clamping device according to claim 2, characterized in that: The angle between the first inclined surface (234) and the bottom surface of the first clamping block (230) is in the range of 30 to 60 degrees, and the angle between the second inclined surface and the bottom surface of the second clamping block (250) is in the range of 30 to 60 degrees.

5. The clamping device according to claim 1, characterized in that: The bottom surface of the first groove (213) is higher than the first dimension of the assembly groove (220), the bottom wall thickness of the third groove (235) is the first dimension, the bottom surface of the second groove (214) is higher than the second dimension of the assembly groove (220), and the bottom wall thickness of the fourth groove is the second dimension.

6. The clamping device according to claim 1, characterized in that: The bottom wall of the assembly groove (220) is provided with an opening (219), the pressing block (270) is provided with a through hole (275) corresponding to the position of the opening (219), and the fastener (290) passes through the through hole (275) and enters the opening (219).

7. The clamping device according to claim 6, characterized in that: The fastener (290) comprises a head (291) and a threaded shank (292), wherein the head (291) is adapted to be pressed against the top surface of the pressing block (270), and the opening (219) is provided with an internal thread that matches the external thread of the threaded shank (292).

8. The clamping device according to claim 1, characterized in that: The first clamping groove is a cylindrical structure, and the second clamping groove is a cylindrical structure.

9. The clamping device according to claim 1, characterized in that: The base (210) is made of 45# steel, and the pressing block (270) is made of 6061 aluminum alloy.

10. A clamping system for a workpiece, characterized in that: A clamping device (200) for a workpiece comprising a plurality of devices as claimed in any one of claims 1 to 9.

Images