Clamping device for clamping workpiece

Abstract

A clamping device for clamping a workpiece comprises a base and a first clamping mechanism connected with the base, the first clamping mechanism comprises a first bearing part, a first pressing part and a limiting part, the first bearing part is slidably connected with the base in the first direction, and the first bearing part is provided with a first positioning groove for bearing the workpiece; the first pressing piece is movably connected with the first bearing piece in the second direction, the first pressing piece abuts against the groove wall of the second positioning groove in the second direction, the limiting piece is connected with the first pressing piece and located on one side of the first positioning groove, and the projection of the limiting piece in the first direction and the projection of the first positioning groove in the first direction are at least partially overlapped. The limiting piece abuts against the workpiece in the first direction. According to the clamping device for clamping the workpiece, the workpiece is placed in the first positioning groove, the first downward pressing piece is matched with the groove wall of the first positioning groove to clamp the workpiece, meanwhile, the workpiece abuts against the limiting piece connected with the first downward pressing piece, the risk that the workpiece moves relative to the first positioning groove is reduced, and the stability during workpiece clamping is improved.

Description

Technical Field

[0001] The present application relates to the field of clamping technology, and in particular to a clamping device for clamping a workpiece. Background Art

[0002] Rod-shaped workpieces such as ejectors are generally clamped by magnetism or gluing during processing. The contact area between the clamping tool and the ejector is small, which makes it easy for the ejector to shake or move when the external processing equipment processes the end of the ejector, resulting in unstable clamping. Utility Model Content

[0003] In view of this, it is necessary to provide a clamping device for clamping a workpiece, which can improve the stability when clamping the workpiece.

[0004] An embodiment of the present application provides a clamping device for clamping a workpiece, comprising a base and a first clamping mechanism connected to the base, wherein the first clamping mechanism comprises a first bearing member, a first pressing member and a limiting member, wherein the first bearing member is slidably connected to a side surface of the base along a first direction, the first pressing member is connected to a side of the first bearing member away from the base in a second direction, the limiting member is connected to the first pressing member and is located on a side of the first bearing member in the first direction, and the first direction is perpendicular to the second direction;

[0005] A first positioning groove is provided on the side of the first supporting member facing away from the base. The first pressing member is movably connected to the first supporting member along a second direction and holds the workpiece against the groove wall of the first positioning groove in the second direction. Along the first direction, the projection of the limiting member and the projection of the first positioning groove at least partially overlap, and the limiting member abuts against the workpiece in the first direction.

[0006] In some embodiments of the present application, the clamping device for clamping the workpiece also includes a second clamping mechanism, the second clamping mechanism includes a second supporting member and a second pressing member, the second supporting member is slidably connected to a side surface of the base along the first direction, the second pressing member is connected to a side of the second supporting member away from the base in the second direction, the second supporting member and the first supporting member are spaced apart along the first direction, and a second positioning groove is provided on the side of the second supporting member away from the base, along the first direction, the projection of the second positioning groove coincides with the projection of the first positioning groove, the second pressing member is movably connected to the second supporting member along the second direction, and the second pressing member holds the workpiece against the groove wall of the second positioning groove in the second direction.

[0007] In some embodiments of the present application, the first pressing member includes a first supporting portion, at least two first connecting portions and a first pressing portion, the first supporting portion is arranged opposite to the first supporting member, the two first connecting portions are connected between the first supporting portion and the first supporting member at intervals along a third direction, the first pressing portion is arranged between the two first connecting portions, and the first pressing portion is connected to the first supporting portion, the first pressing portion moves toward the first positioning groove to support the workpiece, the limiting member is connected to the first pressing portion, and the first direction, the second direction and the third direction are perpendicular to each other.

[0008] In some embodiments of the present application, the first pressing portion is provided with a pressing surface and two inclined surfaces, the pressing surface is provided on the side of the first pressing portion away from the first supporting portion, the two inclined surfaces are connected to both sides of the pressing surface, and the inclined surfaces are inclined along a direction toward the first supporting member.

[0009] In some embodiments of the present application, the first clamping mechanism also includes a first stopper, which is connected to the side of the first pressing portion that is away from the limiting member in the first direction, and the two ends of the first stopper are abutted against the side of the two first connecting portions that are away from the limiting member.

[0010] In some embodiments of the present application, the limiting member includes a first limiting portion, a second limiting portion, a guide portion and an elastic portion, the first limiting portion is connected to the side of the first pressing portion in the first direction away from the first stop member, the second limiting portion is arranged on the side of the first limiting portion facing the base, and the second limiting portion is spaced apart from the first supporting member, the guiding portion is connected between the first limiting portion and the second limiting portion, and the elastic portion is sleeved on the outer wall of the guiding portion and elastically supported between the first limiting portion and the second limiting portion.

[0011] In some embodiments of the present application, the second pressing member includes a second supporting portion, at least two second connecting portions and a second pressing portion, the second supporting portion is arranged opposite to the second supporting member, two second connecting portions are connected between the second supporting portion and the second supporting member at intervals along the third direction, the second pressing portion is arranged between the two second connecting portions, and the second pressing portion is connected to the second supporting portion, and the second pressing portion moves toward the second positioning groove to support the workpiece.

[0012] In some embodiments of the present application, the second clamping mechanism also includes two second stoppers, the two second stoppers are connected to the two sides of the second pressing portion in the first direction, and the two ends of each second stopper are abutted against the side of the two second connecting portions away from the other second stopper.

[0013] In some embodiments of the present application, the base is provided with a guide block extending along the first direction, and the first carrier and the second carrier are provided with a sliding groove on one side facing the base, and the guide block extends into the sliding groove and causes the first carrier and the second carrier to slide along the first direction.

[0014] In the above-mentioned clamping device for clamping the workpiece, the workpiece is placed in the first positioning groove, and the first pressing member cooperates with the groove wall of the first positioning groove to clamp the workpiece. At the same time, the workpiece resists the limit member connected to the first pressing member, thereby reducing the risk of the workpiece moving relative to the first positioning groove and improving the stability when clamping the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a clamping device for clamping a workpiece according to an embodiment of the present application.

[0016] Figure 2 This is a schematic diagram of the exploded structure of a first clamping mechanism and a second clamping mechanism of a clamping device for clamping a workpiece according to an embodiment of the present application.

[0017] Figure 3 This is a schematic structural diagram of a first pressing portion of a clamping device for clamping a workpiece according to an embodiment of the present application.

[0018] Figure 4 This is a schematic structural diagram of a limiting member of a clamping device for clamping a workpiece according to an embodiment of the present application.

[0019] Figure 5 This is a schematic diagram of the connection structure between a pressing member and a limiting member of a clamping device for clamping a workpiece according to an embodiment of the present application.

[0020] Figure 6 For along Figure 3 Schematic diagram of the cross-sectional structure obtained by the section line AA in.

[0021] Main component symbols

[0022] Clamping device 100 for clamping workpiece

[0023] Workpiece 10

[0024] Base 20

[0025] Guide block 21

[0026] Mounting seat 22

[0027] First fixing hole 23

[0028] Second fixing hole 24

[0029] The first clamping mechanism 30

[0030] First bearing member 31

[0031] First positioning groove 311

[0032] Chute 312, 412

[0033] The first pressing member 32

[0034] The first support portion 321

[0035] First connection portion 322

[0036] The first pressing portion 323

[0037] Pressing surface 3231

[0038] Incline 3232

[0039] Driving unit 324

[0040] Limiting piece 33

[0041] The first limiting portion 331

[0042] The second limiting portion 332

[0043] Guide part 333

[0044] Elastic portion 334

[0045] First stopper 34

[0046] The second clamping mechanism 40

[0047] The second bearing member 41

[0048] The second positioning groove 411

[0049] The second pressing member 42

[0050] The second supporting portion 421

[0051] The second connection portion 422

[0052] The second pressing portion 423

[0053] Second stopper 43

[0054] First fastener 50

[0055] Second fastener 60

[0056] First direction Z

[0057] Second direction X

[0058] The third direction Y

[0059] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0060] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0061] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time.

[0062] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art belonging to the technical field of the present application. The terms used herein in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more related listed items. The terms "vertical", "horizontal", "left", "right", "top", "bottom" and similar expressions used herein are only for illustrative purposes and are not intended to limit the present application.

[0063] It will be appreciated that when describing two components as being arranged in parallel / perpendicular, a tolerance of ±10% is allowed for the angle between the two components relative to the standard parallel / perpendicular.

[0064] Some embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0065] See also Figure 1 The clamping device 100 for clamping a workpiece provided in the embodiment of the present application is used to clamp a workpiece 10. In this embodiment, the workpiece 10 is an ejector pin. It can be understood that the clamping device 100 for clamping a workpiece can also be used to clamp other workpieces 10 in a strip shape.

[0066] Please also read Figure 1 and Figure 2 The clamping device 100 for clamping a workpiece includes a base 20, a first clamping mechanism 30 and a second clamping mechanism 40. The first clamping mechanism 30 and the second clamping mechanism 40 are detachably connected to the base 20 and slidably connected to the base 20 along a first direction Z. The first clamping mechanism 30 and the second clamping mechanism 40 are arranged at intervals and located on the same side of the base 20. The first clamping mechanism 30 and the second clamping mechanism 40 cooperate to clamp the workpiece 10. In the illustrated embodiment, the first direction Z is a vertical direction.

[0067] The first clamping mechanism 30 includes a first bearing member 31, a first pressing member 32 and a stopper 33. The first bearing member 31 is disposed at one side of the base 20 and is slidably connected to the base 20 along the first direction Z. The first pressing member 32 is connected to a side of the first bearing member 31 away from the base 20 in the second direction X. The stopper 33 is connected to the first pressing member 32 and is located at one side of the first bearing member 31 in the first direction Z. The first direction Z is perpendicular to the second direction X.

[0068] A first positioning groove 311 is provided on a side of the first bearing member 31 facing away from the base 20, and the first positioning groove 311 carries the workpiece 10. The first pressing member 32 is movably connected to the first bearing member 31 along the second direction X, and the projection of the limiting member 33 in the first direction Z and the projection of the first positioning groove 311 in the first direction Z at least partially overlap, and the limiting member 33 abuts against the workpiece 10 in the first direction Z.

[0069] Among them, the base 20 is provided with a guide block 21 extending along the first direction Z, and a sliding groove 312 is provided on the side of the first supporting member 31 facing the base 20. The guide block 21 extends into the sliding groove 312 and enables the first supporting member 31 to move along the first direction Z, thereby improving the stability of the first supporting member 31 when sliding relative to the base 20.

[0070] The clamping device 100 for clamping a workpiece further includes a first fastener 50, and a plurality of first fixing holes 23 and a second fixing hole 24 are further provided on the side of the base 20 facing the first bearing member 31. The plurality of first fixing holes 23 are arranged at intervals along the first direction Z, and the plurality of second fixing holes 24 are arranged at intervals along the first direction Z. The first fixing holes 23 and the second fixing holes 24 are arranged one by one in correspondence, and each of the first fixing holes 23 and the second fixing holes 24 are arranged at intervals along the third direction Y, and the first direction Z, the second direction X and the third direction Y are perpendicular to each other. After the first bearing member 31 slides to the first preset position relative to the guide block 21 along the first direction Z, the two ends of the first bearing member 31 are fixed to the first fixing holes 23 and the second fixing holes 24 located at the first preset position by the first fastener 50. Through the above arrangement, after the first bearing member 31 is adjusted on the base 20, the first fastener 50 can improve the stability of the first bearing member 31 on the base 20.

[0071] In this embodiment, the first positioning groove 311 is V-shaped when viewed along the first direction Z. Optionally, the first positioning groove 311 can be configured according to the shape of the workpiece 10 , thereby improving the stability of the workpiece 10 when located in the first positioning groove 311 and improving the versatility of the workpiece 10 clamping device 100 for clamping the workpiece 10 .

[0072] In some implementations, the first carrier 31 may be provided with a plurality of first positioning grooves 311 spaced apart along the third direction Y. Accordingly, each first positioning groove 311 corresponds to a first pressing member 32 and a first stopper 33 to increase the number of workpieces 10 that can be clamped by the first clamping mechanism 30 .

[0073] Please also read Figure 2 , Figure 3 and Figure 4 In some embodiments, the first pressing member 32 holds the workpiece 10 against the groove wall of the first positioning groove 311 in the second direction X. The first pressing member 32 includes a first supporting portion 321, at least two first connecting portions 322 and a first pressing portion 323. The first supporting portion 321 is arranged opposite to the first bearing member 31 in the second direction X. The two first connecting portions 322 are connected between the first supporting portion 321 and the first bearing member 31 at intervals along the third direction Y. The first pressing portion 323 is arranged between the two first connecting portions 322, and the first pressing portion 323 is connected to the first supporting portion 321. The first pressing portion 323 moves toward the first positioning groove 311 to hold the workpiece 10, and the stopper 33 is connected to the first pressing portion 323. After the workpiece 10 is placed in the first positioning groove 311 of the first carrier 31 , the first pressing portion 323 moves relative to the first supporting portion 321 toward the first carrier 31 along the second direction X to support the workpiece 10 in the first positioning groove 311 , thereby improving the stability of the first clamping mechanism 30 when clamping the workpiece 10 .

[0074] The first pressing portion 323 is provided with a pressing surface 3231 and two inclined surfaces 3232. The pressing surface 3231 is provided on the side of the first pressing portion 323 away from the first supporting portion 321. The two inclined surfaces 3232 are connected to the two sides of the pressing surface 3231, and the inclined surfaces 3232 are inclined in the direction toward the first bearing member 31. In this embodiment, each inclined surface 3232 is parallel to the groove wall of a corresponding first positioning groove 311. Through the above arrangement, the pressing surface 3231 is used to support the workpiece 10, and the inclined surface 3232 is used to avoid the groove wall of the first positioning groove 311 with a V-shaped structure, thereby increasing the moving range of the first pressing portion 323 in the first positioning groove 311.

[0075] The first pressing member 32 further includes a driving portion 324 , which is connected to a side of the first supporting portion 321 away from the first connecting portion 322 , and a transmission end of the driving portion 324 is transmission-connected to the first pressing portion 323 , thereby improving the degree of automation when the first pressing portion 323 abuts against the workpiece 10 or moves away from the workpiece 10 .

[0076] The first clamping mechanism 30 further includes a first stopper 34, which is connected to a side of the first pressing portion 323 away from the limiting member 33 in the first direction Z, and two ends of the first stopper 34 abut against the sides of the two first connecting portions 322 away from the limiting member 33. Through the above arrangement, the risk of the first pressing portion 32 deviating from the moving trajectory in the first direction Z due to its own gravity and thus abutting against the workpiece 10 in an unstable manner during the movement of the first pressing portion 32 along the second direction X toward the workpiece 10 on the first supporting member 31 is reduced.

[0077] Please also read Figure 3 , Figure 5 and Figure 6 In some embodiments, the limiting member 33 includes a first limiting portion 331, a second limiting portion 332, a guide portion 333 and an elastic portion 334. The first limiting portion 331 is connected to a side of the first pressing portion 323 that is away from the first stopper 34 in the first direction Z. The second limiting portion 332 is disposed on a side of the first limiting portion 331 that faces the base 20, and the second limiting portion 332 is spaced apart from the first bearing member 31. The guide portion 333 is connected between the first limiting portion 331 and the second limiting portion 332, and the elastic portion 334 is sleeved on the outer side wall of the guide portion 333 and elastically abuts between the first limiting portion 331 and the second limiting portion 332. Through the above arrangement, the workpiece 10 is placed in the first positioning groove 311 of the first bearing member 31, and the end of the workpiece 10 is placed in the second limiting portion 332. When the first pressing portion 323 moves along the second direction X toward the first supporting member 31, the first pressing portion 323 can drive the first limiting portion 331 to compress the elastic portion 334 located between the first limiting portion 331 and the second limiting portion 332. The elastic force of the second elastic portion 334 reacts on the second limiting portion 332 to make the second limiting portion 332 support the end of the workpiece 10, thereby reducing the risk of the workpiece 10 moving relative to the first supporting member 31 and the first pressing portion 32 after clamping, thereby improving the stability of the clamped workpiece 10.

[0078] Please refer again Figure 1 and Figure 2In some embodiments, the second clamping mechanism 40 includes a second bearing member 41 and a second pressing member 42. The second bearing member 41 is disposed on one side of the base 20 and adjacent to the first bearing member 31. The second bearing member 41 is slidably connected to the base 20 along the first direction Z. A second positioning groove 411 is disposed on the side of the second bearing member 41 away from the base 20. The second positioning groove 411 is used to carry the workpiece 10. The second pressing member 42 is movably connected to the second bearing member 41 along the second direction X. The second pressing member 42 holds the workpiece 10 against the groove wall of the second positioning groove 411 in the second direction X. After adjusting the positions of the first bearing member 31 and the second bearing member 41 on the base 20, the workpiece 10 is placed in the first positioning groove 311 and the second positioning groove 411. The first pressing member 32 cooperates with the groove wall of the first positioning groove 311 to clamp one end of the workpiece 10, and the second pressing member 42 cooperates with the groove wall of the second positioning groove 411 to clamp the other end of the workpiece 10, thereby improving the stability when clamping the workpiece 10.

[0079] Along the first direction Z, the projection of the second positioning groove 411 coincides with the projection of the first positioning groove 311 .

[0080] In this embodiment, the second positioning groove 411 is V-shaped when viewed along the first direction Z. Optionally, the second positioning groove 411 can be configured according to the shape of the workpiece 10 , thereby improving the stability of the workpiece 10 when located in the second positioning groove 411 and improving the versatility of the workpiece clamping device 100 for clamping the workpiece 10 .

[0081] The second carrier 41 may be provided with a plurality of second positioning grooves 411 spaced apart along the third direction Y. Accordingly, each second positioning groove 411 corresponds to a second pressing member 42 , so as to increase the number of workpieces 10 that can be clamped by the second clamping mechanism 40 .

[0082] The second pressing member 42 includes a second supporting portion 421, at least two second connecting portions 422 and a second pressing portion 423. The second supporting portion 421 and the second bearing member 41 are arranged opposite to each other in the second direction X. The two second connecting portions 422 are connected between the second supporting portion 421 and the second bearing member 41 at intervals along the third direction Y. The second pressing portion 423 is arranged between the two second connecting portions 422, and the second pressing portion 423 is connected to the second supporting portion 421. The second pressing portion 423 moves toward the second positioning groove 411 to hold the workpiece 10. After the workpiece 10 is placed in the second positioning groove 411 of the second bearing member 41, the second pressing portion 423 moves relative to the second supporting portion 421 toward the second bearing member 41 to hold the workpiece 10 located in the second positioning groove 411, thereby improving the stability of the second clamping mechanism 40 when clamping the workpiece 10.

[0083] The second clamping mechanism 40 further includes two second stoppers 43, which are connected to both sides of the second pressing portion 423 in the first direction Z, and both ends of each second stopper 43 abut against one side of the two second connecting portions 422 away from the other second stopper 43. Through the above arrangement, the risk of the second pressing portion 42 deviating from the moving trajectory in the first direction Z due to its own gravity and thus abutting against the workpiece 10 unstably is reduced during the movement of the second pressing portion 42 along the second direction X toward the workpiece 10 on the second carrier 41. Please continue to refer to Figure 1 and Figure 2 In some embodiments, a slide groove 412 is provided on one side of the second supporting member 41 facing the base 20, and the guide block 21 extends into the slide groove 412 and enables the second supporting member 41 to move along the first direction Z, thereby improving the stability of the second supporting member 41 when sliding relative to the base 20.

[0084] The clamping device 100 for clamping a workpiece further includes a second fastener 60. After the second carrier 41 slides to the second preset position relative to the guide block 21 along the first direction Z, the two ends of the second carrier 41 are fixed to the first fixing hole 23 and the second fixing hole 24 located at the second preset position through the second fastener 60. Through the above arrangement, after the second carrier 41 is adjusted on the base 20, the second fastener 60 can improve the stability of the second carrier 41 on the base 20.

[0085] Please continue reading Figure 1 and Figure 2 The clamping device 100 for clamping a workpiece provided in an embodiment of the present application is used to clamp a workpiece 10. The clamping device 100 for clamping a workpiece includes a base 20 and a first clamping mechanism 30 connected to the base 20. The first clamping mechanism 30 includes a first bearing member 31, a first pressing member 32 and a limiting member 33. The first bearing member 31 is slidably connected to a side surface of the base 20 along a first direction Z. The first pressing member 32 is connected to a side of the first bearing member 31 away from the base 20 in a second direction X. The limiting member 33 is connected to the first pressing member 32 and is located on a side of the first bearing member 31 in the first direction Z. The first direction Z is perpendicular to the second direction X.

[0086] A first positioning groove 311 is provided on a side of the first carrier 31 facing away from the base 20, and the first pressing member 32 is movably connected to the first carrier 31 along the second direction X and holds the workpiece 10 against the groove wall of the first positioning groove 311 in the second direction X. The projection of the stopper 33 in the first direction Z and the projection of the first positioning groove 311 in the first direction Z at least partially overlap, and the stopper 33 abuts against the workpiece 10 in the first direction Z.

[0087] In the above-mentioned clamping device 100 for clamping the workpiece, after adjusting the position of the first carrier 31 on the base 20, the workpiece 10 is placed in the first positioning groove 311 of the first carrier 31, and the first pressing member 32 cooperates with the groove wall of the first positioning groove 311 to clamp the workpiece 10. At the same time, the workpiece 10 is restricted in the limiting member 33 connected to the first pressing member 32, thereby reducing the risk of the workpiece 10 moving relative to the first positioning groove 311 and improving the stability when clamping the workpiece 10.

[0088] In other extended embodiments, the base 20 may be provided with a mounting seat 22 , and the mounting seat 21 may be mounted on a device for processing the workpiece 10 , so that after the clamping device 100 for clamping the workpiece 10 clamps the workpiece 10 , the processing equipment can process the top of the workpiece 10 .

[0089] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present application, and are not used as limitations on the present application. As long as they are within the spirit of the present application, appropriate changes and modifications to the above embodiments are within the scope of the present application.

Claims

1. A clamping device for clamping a workpiece, characterized in that: The clamping device for clamping the workpiece comprises: Base; a first clamping mechanism connected to the base and comprising a first bearing member, a first pressing member and a limiting member, wherein the first bearing member is slidably connected to a side surface of the base along a first direction, the first pressing member is connected to a side of the first bearing member away from the base in a second direction, the limiting member is connected to the first pressing member and is located on a side of the first bearing member in the first direction, and the first direction is perpendicular to the second direction; A first positioning groove is provided on the side of the first supporting member facing away from the base. The first pressing member is movably connected to the first supporting member along a second direction and holds the workpiece against the groove wall of the first positioning groove in the second direction. Along the first direction, the projection of the limiting member and the projection of the first positioning groove at least partially overlap, and the limiting member abuts against the workpiece in the first direction.

2. The clamping device for clamping a workpiece according to claim 1, characterized in that: The clamping device for clamping the workpiece also includes a second clamping mechanism, the second clamping mechanism includes a second supporting member and a second pressing member, the second supporting member is slidably connected to a side surface of the base along the first direction, the second pressing member is connected to a side of the second supporting member away from the base in the second direction, the second supporting member and the first supporting member are spaced apart along the first direction, and a second positioning groove is provided on the side of the second supporting member away from the base, along the first direction, the projection of the second positioning groove coincides with the projection of the first positioning groove, the second pressing member is movably connected to the second supporting member along the second direction, and the second pressing member holds the workpiece against the groove wall of the second positioning groove in the second direction.

3. The clamping device for clamping a workpiece according to claim 2, characterized in that: The first pressing member includes a first supporting portion, at least two first connecting portions and a first pressing portion, the first supporting portion is arranged opposite to the first bearing member, the two first connecting portions are connected between the first supporting portion and the first bearing member at intervals along a third direction, the first pressing portion is arranged between the two first connecting portions, and the first pressing portion is connected to the first supporting portion, the first pressing portion moves toward the first positioning groove to support the workpiece, the limiting member is connected to the first pressing portion, and the first direction, the second direction and the third direction are perpendicular to each other.

4. The clamping device for clamping a workpiece according to claim 3, characterized in that: The first pressing portion is provided with a pressing surface and two inclined surfaces. The pressing surface is provided on a side of the first pressing portion away from the first supporting portion. The two inclined surfaces are connected to both sides of the pressing surface, and the inclined surfaces are inclined in a direction toward the first supporting member.

5. The clamping device for clamping a workpiece according to claim 4, characterized in that: Each of the inclined surfaces is parallel to a corresponding groove wall of the first positioning groove.

6. The clamping device for clamping a workpiece according to claim 3, characterized in that: The first clamping mechanism further includes a first stopper connected to a side of the first pressing portion away from the limiting member in the first direction, and two ends of the first stopper abut against a side of the two first connecting portions away from the limiting member.

7. The clamping device for clamping a workpiece according to claim 6, characterized in that: The limiting member includes a first limiting portion, a second limiting portion, a guide portion and an elastic portion, the first limiting portion is connected to a side of the first pressing portion in the first direction away from the first stop member, the second limiting portion is arranged on a side of the first limiting portion facing the base, and the second limiting portion is spaced apart from the first supporting member, the guiding portion is connected between the first limiting portion and the second limiting portion, and the elastic portion is sleeved on an outer side wall of the guiding portion and elastically supported between the first limiting portion and the second limiting portion.

8. The clamping device for clamping a workpiece according to claim 3, characterized in that: The second pressing member includes a second supporting portion, at least two second connecting portions and a second pressing portion, the second supporting portion is arranged opposite to the second supporting portion, two second connecting portions are connected between the second supporting portion and the second supporting portion at intervals along the third direction, the second pressing portion is arranged between the two second connecting portions, and the second pressing portion is connected to the second supporting portion, and the second pressing portion moves toward the second positioning groove to support the workpiece.

9. The clamping device for clamping a workpiece according to claim 8, characterized in that: The second clamping mechanism further includes two second stoppers, which are connected to two sides of the second pressing portion in the first direction, and two ends of each second stopper abut against one side of the two second connecting portions away from the other second stopper.

10. The clamping device for clamping a workpiece according to claim 2, characterized in that: The base is provided with a guide block extending along the first direction, and the first bearing member and the second bearing member are provided with a slide groove on one side facing the base, and the guide block extends into the slide groove and enables the first bearing member and the second bearing member to slide along the first direction.

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