Clamping mechanism

Abstract

The utility model provides a clamping mechanism. The clamping mechanism comprises a base, a fixing block and a clamping block. The fixed block is arranged on the base; the clamping block is slidably arranged on the base in the first direction so as to be close to or away from the fixing block. A plurality of first right-angle grooves are formed in the side, facing the clamping block, of the fixing block, and the first right-angle grooves are arranged to form a step shape. Second right-angle grooves in one-to-one correspondence with the first right-angle grooves are formed in the side, facing the fixing block, of the clamping block, and the second right-angle grooves are arranged to form a step shape. When the clamping block slides towards the fixing block and gets close to the fixing block, the first right-angle groove and the corresponding second right-angle groove are jointly combined to form a square groove, and the diagonal line formed by connecting the first right-angle groove and the corresponding second right-angle groove is parallel to the first direction. The clamping mechanism is suitable for the square workpiece and is high in positioning precision and good in compatibility.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of laser processing, and more particularly to a clamping mechanism. BACKGROUND

[0002] In the related art, when marking the surface of a motor shell or similar square product, a positioning pin is usually used for positioning, but this method has low positioning accuracy and poor compatibility. CONTENT OF THE UTILITY MODEL

[0003] The application provides a clamping mechanism suitable for square workpieces, which has high positioning accuracy and good compatibility.

[0004] The technical scheme adopted by the application is as follows: a clamping mechanism is provided, which comprises a base, a fixed block and a clamping block.

[0005] The fixed block is arranged on the base.

[0006] The clamping block is slidably arranged on the base along a first direction to approach or move away from the fixed block.

[0007] The side of the fixed block facing the clamping block is provided with a plurality of first right-angle grooves, and the first right-angle grooves are arranged in a stepped shape.

[0008] The side of the clamping block facing the fixed block is provided with a second right-angle groove corresponding to each first right-angle groove, and the second right-angle grooves are arranged in a stepped shape.

[0009] When the clamping block slides towards the fixed block, the first right-angle grooves and the corresponding second right-angle grooves jointly form a square groove, and the diagonal line formed by the first right-angle grooves and the corresponding second right-angle grooves is parallel to the first direction.

[0010] Further, the clamping mechanism further comprises a driver for driving the clamping block to move towards the fixed block.

[0011] Further, the driver comprises:

[0012] A cam is rotatably arranged on the base, and the cam is located on the side of the clamping block away from the fixed block. The cam surface of the cam abuts against the clamping block, and the distance between the cam surface and the rotation center changes with the rotation angle.

[0013] A handle is connected with the cam and is used for driving the cam to rotate. When the handle drives the cam to rotate, the distance between the cam surface and the rotation center gradually increases, and the clamping block is pushed to approach the fixed block along the first direction.

[0014] Furthermore, the clamping mechanism also includes a wear-resistant block, which is detachably disposed on the side of the clamping block away from the fixed block, and the outer contour of the cam abuts against the wear-resistant block.

[0015] Furthermore, the driver also includes an elastic element, and the opposite sides of the fixed block and the clamping block are provided with positioning grooves. The two ends of the elastic element are respectively located in the two positioning grooves, and the elastic element is in a compressed state when the clamping block moves closer to or away from the fixed block.

[0016] Furthermore, the clamping mechanism also includes a guide assembly, which includes two guide blocks protruding from the base. The two guide blocks are respectively located on both sides of the clamping block along the first direction. The guide block has a first end face parallel to the first direction on the side facing the clamping block, and the clamping block has a second end face that fits against the first end face.

[0017] Furthermore, the clamping block has a groove extending in the first direction on one side facing the first end face, and the guide block is provided on a sliding part that protrudes and is embedded in the groove.

[0018] Furthermore, the fixing block has a notch on the side away from the clamping block, and the notch extends along the first direction to eliminate the right angle of each of the first right angle slots.

[0019] Furthermore, the clamping block and the fixing block have a half-sided contour groove on their opposite sides that matches the shape of the workpiece's shaft end.

[0020] Furthermore, the half-sided contour groove is a semi-circular groove.

[0021] The beneficial effects of the clamping mechanism provided in this application embodiment are as follows: This clamping mechanism, through the fixed block and the stepped right-angled groove structure provided on the clamping block, can adapt to square workpieces of different sizes, achieving multi-specification compatibility. When the clamping block slides close to the fixed block along the first direction, the first and second right-angled grooves combine to form a square groove, and one diagonal of the square groove is parallel to the sliding direction, ensuring automatic centering of the workpiece and achieving high-precision positioning. The overall structure is compact, facilitating integration into automated equipment, and significantly improving the positioning accuracy, compatibility, and production efficiency when marking square workpieces. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A three-dimensional structural schematic diagram of the clamping mechanism provided in the embodiments of this application;

[0024] Figure 2 A top view of the clamping mechanism provided in the embodiments of this application;

[0025] Figure 3 An exploded view of the clamping mechanism provided in an embodiment of this application.

[0026] The following are the labeling elements in the figure:

[0027] 10. Base;

[0028] 20. Fixing block; 21. First right-angle groove; 22. Positioning groove; 23. Notch; 24. Half-sided contour groove;

[0029] 30. Clamping block; 31. Second right-angle groove; 32. Second end face; 33. Sliding groove;

[0030] 40. Driver; 41. Cam; 42. Handle; 43. Elastic element;

[0031] 50. Wear-resistant blocks;

[0032] 60. Guide assembly; 61. Guide block; 611. First end face; 612. Sliding part;

[0033] X, the first direction. Detailed Implementation

[0034] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0035] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0036] It should be understood that the terms "length", "width", "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 accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0038] Please see Figure 1 The clamping mechanism provided in the embodiments of this application will now be described. The clamping mechanism provided in the embodiments of this application includes a base 10, a fixing block 20, and a clamping block 30;

[0039] Reference Figure 1 The base 10 is the fundamental support component of the entire clamping mechanism, providing a platform for the installation and movement of the fixing block 20 and the clamping block 30. For example, the base 10 can be a flat plate made of metal (such as stainless steel) with a smoothed surface to ensure that the fixing block 20 and the clamping block 30 can be stably installed and slid. The shape of the base 10 can be designed as rectangular according to the actual application scenario, and its size is determined according to the size of the product to be clamped and the space requirements of the actual equipment.

[0040] Reference Figures 1 to 3 The fixing block 20 is disposed on the base 10 and serves to support the square workpiece. The fixing block 20 is also made of metal material (such as aluminum alloy) and is firmly fixed to a specific position on the base 10 by bolts or other connecting parts.

[0041] The clamping block 30 is slidably disposed on the base 10 along a first direction X to move closer to or further away from the fixing block 20. Here, the first direction X refers to the direction related to the relative positional change of the fixing block 20 and the clamping block 30, and may be, for example, a horizontal direction. To achieve the sliding of the clamping block 30, a guide rail can be provided on the base 10, and a slider cooperating with the guide rail is installed at the bottom of the clamping block 30. A driving device such as a motor or cylinder drives the clamping block 30 to slide on the guide rail, thereby achieving the action of the clamping block 30 moving closer to or further away from the fixing block 20.

[0042] Reference Figures 1 to 3 The fixing block 20 is provided with a plurality of first right-angle grooves 21 on the side facing the clamping block 30, and each of the first right-angle grooves 21 is arranged in a stepped shape.

[0043] In some embodiments, the fixing block 20 has a plurality (e.g., 5) of first right-angle slots 21 on the side facing the clamping block 30. Since the first right-angle slots 21 are arranged in a stepped shape, it can be understood that the size of each first right-angle slot 21 decreases from top to bottom. For example, the side length of the uppermost first right-angle slot 21 may be 200mm × 200mm, the side length of the second first right-angle slot 21 below is 180mm × 180mm, the third is 160mm × 160mm, the fourth is 140mm × 140mm, and the bottom fifth is 120mm × 120mm. After being arranged in this manner, a stepped structure is formed when viewed from the side.

[0044] The first right-angle groove 21 has three end faces, namely a bottom face and two side faces. The two side faces are perpendicular to the bottom face, and the two side faces are also perpendicular to each other to form a right angle.

[0045] Reference Figures 1 to 3 The clamping block 30 has a second right-angle groove 31 on the side facing the fixing block 20, which is arranged in a stepped shape and corresponds one-to-one with the first right-angle groove 21.

[0046] The clamping block 30 also has multiple (five in total) second right-angled slots 31 on the side facing the fixing block 20, each corresponding to one of the first right-angled slots 21. Since the second right-angled slots 31 are arranged in a stepped shape, it can be understood that the size of each second right-angled slot 31 decreases sequentially from top to bottom. For example, the second right-angled slot 31 corresponding to the topmost 200mm × 200mm first right-angled slot 21 on the fixing block 20 is also 200mm × 200mm, and so on.

[0047] The second right-angle groove 31 has three end faces, namely a bottom face and two side faces. The two side faces are perpendicular to the bottom face, and the two side faces are also perpendicular to each other to form a right angle.

[0048] When the clamping block 30 slides closer to the fixing block 20, the first right-angle groove 21 and the corresponding second right-angle groove 31 combine to form a square groove, and the diagonal line formed by the first right-angle groove 21 and the corresponding second right-angle groove 31 is parallel to the first direction X.

[0049] When clamping and positioning a motor housing or similar square product, firstly, select the appropriate combination of the first right-angle slot 21 and the second right-angle slot 31 according to the product's dimensions. Then, slide the clamping block 30 closer to the fixing block 20. When the clamping block 30 moves to the appropriate position, the corresponding first right-angle slot 21 and the second right-angle slot 31 will combine to form a square slot. Furthermore, one diagonal of this square slot is parallel to the first direction X (i.e., the direction in which the clamping block 30 slides). For example, if the first direction X is horizontal, then this diagonal of the formed square slot will be horizontal. Placing the product in this square slot allows it to clamp and position from the diagonal direction, ensuring stable positioning during marking and improving marking accuracy.

[0050] Reference Figures 1 to 3 The clamping mechanism also includes a driver 40, which drives the clamping block 30 to move closer to the fixed block 20. The driver 40 plays the role of a power source in the entire clamping mechanism, and its core function is to drive the clamping block 30 to move closer to the fixed block 20, thereby realizing the clamping action on the motor housing or similar square products.

[0051] Specifically, the clamping mechanism can be a cylinder, an electric push rod, or a cam 41 drive mechanism.

[0052] Reference Figures 1 to 3 The driver 40 includes a cam 41 and a handle 42.

[0053] The cam 41 is rotatably mounted on the base 10. The cam 41 is located on the side of the clamping block 30 away from the fixed block 20. The wheel surface of the cam 41 abuts against the clamping block 30, and the distance between the wheel surface of the cam 41 and the rotation center changes with the rotation angle.

[0054] Since the wheel surface of cam 41 abuts against the clamping block 30, and the distance between the wheel surface of cam 41 and the center of rotation changes with the rotation angle, when cam 41 rotates, the clamping block 30 can be pushed closer to the fixed block 20 by increasing the distance between the wheel surface of cam 41 and the center of rotation. Here, cam 41 can be an elliptical structure or a circular eccentric wheel.

[0055] The handle 42 is connected to the cam 41 and is used to drive the cam 41 to rotate. When the handle 42 drives the cam 41 to rotate, the distance between the surface of the cam 41 and the center of rotation gradually increases, pushing the clamping block 30 closer to the fixing block 20 along the first direction X.

[0056] The handle 42 is connected to the cam 41, and this connection can be achieved through welding, threaded connection, or key connection, ensuring that the handle 42 can effectively drive the cam 41 to rotate. The handle 42 can be made of plastic or metal and designed in a shape that is easy for the operator to hold and operate, such as a cylindrical shape with anti-slip texture. The operator can manually turn the handle 42 to drive the cam 41 to rotate on the base 10.

[0057] When the operator needs to clamp the motor housing or similar square products, they manually grasp and rotate the handle 42. As the handle 42 rotates, the cam 41 connected to it begins to rotate around its center of rotation. Since the distance between the cam 41 surface and the center of rotation changes with the rotation angle, the distance between the cam 41 surface and the center of rotation gradually increases as the handle 42 drives the cam 41 to rotate. Because the cam 41 surface abuts against the clamping block 30, as the distance between the cam 41 surface and the center of rotation increases, a thrust is generated on the clamping block 30 in the first direction X (i.e., the direction closer to the fixed block 20).

[0058] Under this thrust, the clamping block 30 will slide closer to the fixing block 20 along the preset guide rail on the base 10 (the structure mentioned above that enables the clamping block 30 to slide). When the clamping block 30 approaches the fixing block 20 to a certain position, the first right-angle groove 21 on the fixing block 20 and the corresponding second right-angle groove 31 on the clamping block 30 combine to form a square groove, clamping and positioning the motor housing or similar square products for subsequent marking and other operations.

[0059] Reference Figures 1 to 3 The clamping mechanism further includes a wear-resistant block 50, which is detachably disposed on the side of the clamping block 30 away from the fixing block 20, and the outer contour of the cam 41 abuts against the wear-resistant block 50.

[0060] The grinding block is detachably mounted on the side of the clamping block 30 away from the fixing block 20. Its detachable connection can be achieved by bolts or a dovetail joint.

[0061] When using bolted connections, threaded holes are pre-machined on the clamping block 30, and through holes are provided on the wear-resistant block 50 at corresponding positions. By passing the bolt through the through hole of the wear-resistant block 50 and screwing it into the threaded hole of the clamping block 30, the wear-resistant block 50 can be firmly fixed to the clamping block 30. When it is necessary to disassemble the wear-resistant block 50, simply use a tool to unscrew the bolts.

[0062] When using the dovetail joint method, a dovetail groove is machined on the clamping block 30, and a matching dovetail tenon is on the wear-resistant block 50. During installation, the dovetail tenon is slid into the dovetail groove and then fixed by means of positioning pins, etc. During disassembly, the positioning pin is pulled out and the wear-resistant block 50 is slid out.

[0063] When the operator turns handle 42 to drive cam 41 to rotate, the outer contour of cam 41 abuts against wear block 50, causing friction. Wear block 50 bears the friction and pressure between cam 41 and clamping block 30, preventing clamping block 30 from being directly worn. With increased use, wear block 50 will inevitably wear down. When wear block 50 wears to a certain extent and affects the normal operation of the clamping mechanism, due to its detachable design, the operator can easily and quickly remove the worn wear block 50 from clamping block 30 and replace it with a new one. Compared to non-removable wear block 50, this method greatly shortens maintenance time, reduces maintenance difficulty, minimizes equipment downtime due to maintenance, and improves production efficiency.

[0064] Reference Figures 1 to 3 The driver 40 also includes an elastic element 43. The fixed block 20 and the clamping block 30 are provided with positioning grooves 22 on their opposite sides. The two ends of the elastic element 43 are respectively located in the two positioning grooves 22, and the elastic element 43 is in a compressed state when the clamping block 30 moves closer to or away from the fixed block 20.

[0065] The elastic element 43 can be a spring, such as a cylindrical helical spring, which has good elastic recovery ability and stable mechanical properties.

[0066] The positioning groove 22 is a groove machined into the surface of the fixing block 20 and the clamping block 30. Its shape is usually adapted to the end of the elastic element 43. For example, when the elastic element 43 is a cylindrical helical spring, the positioning groove 22 can be a circular groove with a diameter slightly larger than the outer diameter of the spring and a depth sufficient to accommodate a certain length of the spring end to ensure that the spring will not easily come out of the positioning groove 22 during operation. The two ends of the spring are placed in the positioning grooves 22 of the fixing block 20 and the clamping block 30, respectively. This arrangement can position and guide the spring, ensuring that the spring can accurately extend and retract along the predetermined direction during operation.

[0067] When the operator drives the cam 41 to rotate by turning the handle 42, causing the cam 41 to push the clamping block 30 closer to the fixed block 20 along the first direction X, the elastic element 43 will be further compressed. This is because as the clamping block 30 moves towards the fixed block 20, the distance between the two positioning grooves 22 decreases, and the spring itself has a certain initial compression. At this time, the compressive force on the spring increases, and the degree of compression deepens. During this process, the spring will generate a reverse elastic force, which helps the clamping block 30 to move closer to the fixed block 20 more smoothly, avoiding the clamping block 30 from shaking or impacting due to excessive or uneven pushing force from the cam 41, thereby improving the stability and accuracy of the clamping process.

[0068] When it is necessary to loosen the clamp on the motor housing or similar square products, the operator rotates the handle 42 in the opposite direction. The distance between the wheel surface of the cam 41 and the center of rotation gradually decreases, and the pushing force on the clamping block 30 disappears. At this time, since the elastic element 43 is in a compressed state, it releases the stored elastic potential energy, generating a spring force that pushes the clamping block 30 away from the fixed block 20, thus realizing the automatic reset function of the clamping block 30. No additional drive device is needed to return the clamping block 30 to its initial position, simplifying the structure and operation of the clamping mechanism and improving work efficiency.

[0069] Reference Figures 1 to 3 The clamping mechanism further includes a guide assembly 60, which includes two guide blocks 61. The guide blocks 61 protrude from the base 10 and are located on both sides of the clamping block 30 along the first direction X. The guide block 61 has a first end face 611 parallel to the first direction X on the side facing the clamping block 30, and the clamping block 30 has a second end face 32 that fits against the first end face 611.

[0070] The guide block 61 is made of metal materials, such as stainless steel or aluminum alloy, and is machined to ensure its dimensional accuracy and surface flatness.

[0071] Each guide block 61 has a first end face 611 parallel to the first direction X on the side facing the clamping block 30. This first end face 611 is a precision-machined plane with high flatness and straightness to ensure accurate guidance for the movement of the clamping block 30.

[0072] Similarly, the second end face 32 on the clamping block 30 is also finely machined to ensure good fit with the first end face 611 of the guide block 61, so as to achieve a stable guiding effect.

[0073] When the driver 40 (such as the drive structure consisting of cam 41 and handle 42) drives the clamping block 30 to move along the first direction X, the second end faces 32 on both sides of the clamping block 30 are in close contact with the first end face 611 of the guide block 61. Since the first end face 611 is parallel to the first direction X, it constrains and guides the movement of the clamping block 30. The first end face 611 of the guide block 61 restricts the displacement of the clamping block 30 in the direction perpendicular to the first direction X, so that the clamping block 30 can only move in a straight line along the first direction X. Similarly, when it is necessary to release the product and the clamping block 30 moves away from the fixed block 20, the guide block 61 still ensures that it moves smoothly along the predetermined first direction X.

[0074] Reference Figures 1 to 3The clamping block 30 has a groove 33 extending along the first direction X on one side facing the first end face 611, and the guide block 61 is provided on a sliding part 612 that protrudes and is embedded in the groove 33.

[0075] The slide groove 33 can be precisely machined on the clamping block 30 through machining processes such as milling and grinding. The cross-sectional shape of the slide groove 33 is generally a regular shape such as rectangular or trapezoidal to ensure good fit with the sliding part 612.

[0076] The sliding part 612 and the guide block 61 can be integrally formed, for example, by casting or forging followed by machining, to ensure their overall strength and stability.

[0077] When the driver 40 drives the clamping block 30 to move along the first direction X, the sliding part 612 on the guide block 61 slides within the groove 33 of the clamping block 30. Since the groove 33 extends along the first direction X, the sliding part 612 can only move along this direction within the groove 33, thus providing more precise guidance for the movement of the clamping block 30. This cooperation method is similar to the relationship between a guide rail and a slider, ensuring that the clamping block 30 always moves linearly along the predetermined first direction X during movement, avoiding lateral deviation or wobbling of the clamping block 30.

[0078] Reference Figures 1 to 3 The fixing block 20 has a notch 23 on the side away from the clamping block 30, and the notch 23 extends along the first direction X to eliminate the right angle of each of the first right angle slots 21.

[0079] The notch 23 extends along the first direction X, allowing it to penetrate the positions of each of the first right-angled slots 21 on the fixing block 20, ultimately eliminating the right angles of each of the first right-angled slots 21. In other words, the right-angled portion of the original first right-angled slot 21 is "cut out" by the notch 23, forming a special structure.

[0080] From a mechanical perspective, the notch 23 alters the stress distribution of the fixing block 20. When clamping the product, the fixing block 20 experiences a reaction force from the product. The right-angle portion of the first right-angle groove 21 is prone to stress concentration, which could lead to cracks or damage to the fixing block 20 over time. The notch 23, however, allows the stress to be distributed more evenly across other parts of the fixing block 20, preventing stress concentration and thus enhancing the structural stability of the fixing block 20 under load, extending its service life.

[0081] Reference Figures 1 to 3 The clamping block 30 and the fixing block 20 have a half-shaped groove 24 on their opposite sides that matches the shape of the shaft end of the workpiece.

[0082] A half-shaped contour groove 24 adapted to the shape of the workpiece shaft end is provided on the opposite side of the clamping block 30 and the fixing block 20. When it is necessary to clamp the workpiece, the shaft end of the workpiece is placed in the space formed by the combination of the two half-shaped contour grooves 24 on the clamping block 30 and the fixing block 20.

[0083] When the operator slides the clamping block 30 toward the fixed block 20 using the driver 40, the two half-shaped contour grooves 24 on the fixed block 20 and the clamping block 30 gradually close, eventually tightly wrapping the shaft end of the workpiece in the middle. Because the half-shaped contour grooves 24 are adapted to the shape of the workpiece shaft end, they can uniformly constrain and clamp the shaft end from the circumferential direction.

[0084] Reference Figures 1 to 3 The half-circular groove 24 is a semi-circular groove. The dimensions, radius, and other parameters of the semi-circular groove are precisely designed based on the actual dimensions and shape of the workpiece shaft end to ensure that the two semi-circular grooves can achieve a good fit with the workpiece shaft end after combination. For example, if the workpiece shaft end is a standard cylinder, then the radius of the semi-circular groove will be the same as the radius of the cylindrical shaft end.

[0085] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A clamping mechanism, characterized in that, Includes a base, a fixing block, and a clamping block; The fixing block is disposed on the base; The clamping block is slidably disposed on the base along the first direction to move closer to or further away from the fixing block; The fixing block is provided with a plurality of first right-angle grooves on the side facing the clamping block, and the first right-angle grooves are arranged in a stepped shape; The clamping block has a second right-angle groove on the side facing the fixing block that corresponds one-to-one with the first right-angle groove, and the second right-angle grooves are arranged in a stepped shape. When the clamping block slides closer to the fixing block, the first right-angled groove and the corresponding second right-angled groove combine to form a square groove, and the diagonal line formed by the first right-angled groove and the corresponding second right-angled groove is parallel to the first direction.

2. The clamping mechanism according to claim 1, characterized in that, The clamping mechanism further includes a driver for driving the clamping block to move closer to the fixed block.

3. The clamping mechanism according to claim 2, characterized in that, The driver includes: A cam is rotatably mounted on the base. The cam is located on the side of the clamping block away from the fixed block. The wheel surface of the cam abuts against the clamping block, and the distance between the wheel surface of the cam and the center of rotation varies with the rotation angle. A handle is connected to the cam and is used to drive the cam to rotate. When the handle drives the cam to rotate, the distance between the cam surface and the center of rotation gradually increases, pushing the clamping block closer to the fixed block along the first direction.

4. The clamping mechanism according to claim 3, characterized in that, The clamping mechanism further includes a wear-resistant block, which is detachably disposed on the side of the clamping block away from the fixed block, and the outer contour of the cam abuts against the wear-resistant block.

5. The clamping mechanism according to claim 3, characterized in that, The driver also includes an elastic element. The opposite sides of the fixed block and the clamping block are provided with positioning grooves. The two ends of the elastic element are respectively located in the two positioning grooves, and the elastic element is in a compressed state when the clamping block moves closer to or away from the fixed block.

6. The clamping mechanism according to claim 1, characterized in that, The clamping mechanism further includes a guide assembly, which includes two guide blocks protruding from the base. The two guide blocks are located on both sides of the clamping block along the first direction. The guide block has a first end face parallel to the first direction on the side facing the clamping block, and the clamping block has a second end face that fits against the first end face.

7. The clamping mechanism according to claim 6, characterized in that, The clamping block has a groove extending in the first direction on one side facing the first end face, and the guide block is provided on the sliding part that protrudes and is embedded in the groove.

8. The clamping mechanism according to claim 1, characterized in that, The fixing block has a notch on the side away from the clamping block, and the notch extends along the first direction to eliminate the right angle of each of the first right angle slots.

9. The clamping mechanism according to any one of claims 1 to 8, characterized in that, The clamping block and the fixing block have a half-sided contour groove on their opposite sides that matches the shape of the workpiece's shaft end.

10. The clamping mechanism according to claim 9, characterized in that, The half-sided contour groove is a semi-circular groove.

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