Clamping mechanism and detection system

Abstract

The utility model relates to the technical field of part detection, and discloses a clamping mechanism and a detection system. The clamping mechanism comprises a fixing frame used for being installed on a testing fixture; the supporting frame is connected with the fixing frame and provided with a first end and a second end; the movable arm is rotationally arranged at the first end of the supporting frame, and the movable arm is configured to be slidably arranged relative to the first end of the supporting frame; the adjusting assembly is arranged at the second end of the supporting frame, and the adjusting assembly is configured to enable the movable arm to rotate around the first end of the supporting frame and / or slide relative to the first end, so that the movable arm is matched with the fixed part of the testing fixture to clamp the to-be-clamped piece. By means of the mode, the problem that an existing clamping mechanism cannot conduct positioning and clamping with the inner side face of the to-be-clamped piece as the reference can be solved, the stability of the to-be-clamped piece on a testing fixture is improved, displacement of the to-be-clamped piece in the measuring process is prevented, the stability of the to-be-clamped piece on the testing fixture is guaranteed, and the reliability of parameter measurement of the to-be-clamped piece is prevented from being affected.

Description

Technical Field

[0001] This application relates to the field of parts inspection technology, specifically to a clamping mechanism and inspection system. Background Technology

[0002] A gauge is a tool used to inspect parameters such as the size, shape, position, and surface quality of a part. Its working principle is to determine the size, shape, and position of the part by measuring parameters such as the gap and height difference between the part and the gauge. The working principle of a gauge mainly consists of three steps: positioning, measurement, and analysis. First, the gauge needs to position the part in the correct position, which can be achieved by adjusting the clamping device.

[0003] In the development of automotive parts inspection fixtures, the clamping method of parts directly affects the accuracy of measurement data. In current new energy vehicles, parts such as water channels often adopt U-shaped or other irregular structures. Considering the need for leak-proof characteristics, the assembly reference of the water channel is generally set on the inner side of the channel. If traditional clamping mechanisms are used to clamp the water channel from the outside or top, it is very easy for the water channel to deform or shift. For U-shaped parts such as water channels, traditional clamping mechanisms have a relatively singular clamping direction, generally only applying pressure from the outside or top, making it difficult to cover the reference on the inner side of the U-shaped part. This causes the part to easily shift during measurement, thus affecting the reliability of the measurement data. Utility Model Content

[0004] This application provides a clamping mechanism and a detection system that can solve the problem that existing clamping mechanisms are difficult to use the inner side of the workpiece as a reference for positioning and clamping, improve the stability of the workpiece on the fixture, prevent the workpiece from shifting during the measurement process, ensure the stability of the workpiece on the fixture, and avoid affecting the reliability of the parameter measurement of the workpiece.

[0005] This application provides a clamping mechanism, including:

[0006] Mounting bracket, used for mounting on inspection fixtures;

[0007] A support frame, connected to the fixed frame, the support frame having a first end and a second end;

[0008] A movable arm is rotatably disposed at the first end of the support frame, and the movable arm is configured to slide relative to the first end of the support frame;

[0009] An adjustment assembly is disposed at the second end of the support frame. The adjustment assembly is configured to allow the movable arm to rotate about the first end of the support frame and / or slide relative to the first end, such that the movable arm engages with the fixed part of the inspection fixture to clamp the workpiece.

[0010] In one embodiment of this application, the first end of the support frame is provided with an ear plate, the ear plate is provided with a connecting rod, the movable arm has a third end and a fourth end, a connecting groove is formed between the third end and the fourth end of the movable arm, and the movable arm is connected to the connecting rod through the connecting groove.

[0011] In one embodiment of this application, the adjustment component includes:

[0012] The base is disposed at the second end of the support frame;

[0013] A pressure-resistant component is provided through the base along its thickness direction;

[0014] The first rotating component is rotatably connected to the base;

[0015] The second rotating component is rotatably connected to the first rotating component, and the second rotating component is rotatably connected to the pressure-blocking assembly;

[0016] The second rotating component can be rotated to move the pressure-retaining assembly along the thickness direction of the base, thereby causing the movable arm to rotate around the connecting rod.

[0017] In one embodiment of this application, the adjusting assembly further includes a third rotating member, the third rotating member being rotatably connected to the pressing assembly; and / or,

[0018] The second rotating member is provided with a handle; and / or,

[0019] The first rotating component includes two parts, and the second rotating component is located between the two first rotating components. A limit plate is provided between the first rotating components.

[0020] In one embodiment of this application, the base is detachably connected to the support frame, and the support frame is provided with a clearance channel for the pressure-resistant kit to pass through the support frame.

[0021] In one embodiment of this application, the support frame is provided with a nut located at the clearance channel, and the base is provided with an externally threaded sleeve connected to the nut.

[0022] In one embodiment of this application, the pressure-blocking kit includes a main pressure-blocking member and a sub-pressure-blocking member, wherein the main pressure-blocking member and the sub-pressure-blocking member are retractably connected.

[0023] In one embodiment of this application, the main pressing member is rotatably connected to the second rotating member, and the sub-pressing member is used to press against the movable arm; and / or,

[0024] One end of the sub-pressure member is provided with a pressure contact.

[0025] In one embodiment of this application, one end of the movable arm is provided with a clamping head, and the other end of the movable arm is provided with an operating head.

[0026] Accordingly, this application also provides a testing system, including a fixture and a clamping mechanism as described in the above embodiments. The fixture includes a main body and a fixed attachment. The fixed frame is connected to the main body. The fixture clamps and positions the workpiece to be clamped between the fixed attachment and the movable arm through the clamping mechanism.

[0027] The beneficial effects of this application are as follows: by operating the movable arm to rotate and slide relative to the support frame, the movable arm can adjust the relative position between the movable arm and the workpiece to be clamped according to the shape and structure of the workpiece to be clamped. This allows for positioning with the inner side of the workpiece as a reference. Subsequently, by adjusting the component to hold the movable arm, the workpiece to be clamped is fixed between the fixed attachment and the movable arm. This solves the problem that existing clamping mechanisms are difficult to position and clamp with the inner side of the workpiece as a reference, improves the stability of the workpiece on the fixture, prevents displacement of the workpiece during measurement, ensures the stability of the workpiece on the fixture, and avoids affecting the reliability of the parameter measurement of the workpiece. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.

[0029] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the clamping mechanism of this application;

[0030] Figure 2 yes Figure 1 The diagram shows the structure of the clamping mechanism and the fixed zero-attachment.

[0031] Figure 3 yes Figure 1 A three-dimensional structural schematic diagram of the clamping mechanism shown from another perspective;

[0032] Figure 4 yes Figure 1 A schematic diagram of the adjusting component in the clamping mechanism shown;

[0033] Figure 5 yes Figure 4 A top view of the adjustment component shown.

[0034] Figure 6 yes Figure 5 Schematic diagram of the cross-sectional structure along the AA direction;

[0035] Figure 7 yes Figure 1 The clamping mechanism shown is a schematic diagram of the structure after the adjustment component has been disassembled.

[0036] Explanation of reference numerals in the attached figures:

[0037] 10. Fixing frame; 20. Support frame; 21. Ear plate; 22. Connecting rod; 23. Clearance channel; 24. Nut; 30. Movable arm; 31. Connecting groove; 32. Clamping head; 33. Operating head; 40. Adjusting component; 41. Base; 411. External threaded sleeve; 42. Pressing assembly; 421. Main pressing component; 4211. Receiving hole; 422. Sub-pressing component; 4221. Pressing contact; 43. First rotating component; 44. Second rotating component; 431. Limiting plate; 45. Third rotating component; 46. Handle; 47. First pin; 48. Second pin; 49. Third pin; 50. Fixing attachment. Detailed Implementation

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "up," "down," "left," and "right" generally refer to up, down, left, and right in the actual use or working state of the device, specifically the drawing directions in the accompanying drawings.

[0039] In this application, unless otherwise expressly specified and limited, the terms "connected," "linked," "stacked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0040] Please refer to Figure 1 and Figure 2 This application provides a clamping mechanism, including a fixed frame 10, a support frame 20, a movable arm 30, and an adjustment assembly 40.

[0041] Specifically, the mounting bracket 10 is used to install on the inspection fixture; more specifically, the mounting bracket 10 can be installed on the measuring table of the inspection fixture, and the mounting bracket 10 can be connected to the measuring table of the inspection fixture by bolts or welding.

[0042] The support frame 20 is connected to the fixed frame 10. The support frame 20 has a first end and a second end. Specifically, the support frame 20 can be in an L-shaped structure or an approximately L-shaped structure. The fixed frame 10 can be fixedly connected to the corner of the L-shaped support frame 20. Of course, in other embodiments, the support frame 20 can also be in other shapes, and the fixed frame 10 can also be fixedly connected to other parts of the support frame 20. This is not a unique limitation.

[0043] The movable arm 30 is rotatably mounted at the first end of the support frame 20, and the movable arm 30 is configured to slide relative to the first end of the support frame 20. Specifically, the movable arm 30 rotates relative to the support frame 20 to adjust the opening angle between the movable arm 30 and the first end of the support frame 20, so that the part to be clamped can be placed between the movable arm 30 and the first end of the support frame 20. The movable arm 30 slides relative to the support frame 20 to adjust the end position of the movable arm 30 used to clamp the part to be clamped, so as to better fix the part to be clamped.

[0044] An adjustment component 40 is disposed at the second end of the support frame 20. The adjustment component 40 is configured to allow the movable arm 30 to rotate around the first end of the support frame 20 and / or slide relative to the first end, so that the movable arm 30 cooperates with the fixed zero point 50 of the fixture (not shown in the figure) to clamp the workpiece to be clamped. The fixed zero point 50 is a device or mark on the fixture used to fix or calibrate the zero point position. Its main function is to ensure that the fixture maintains a consistent reference position during multiple uses, thereby ensuring the repeatability and accuracy of the test. The workpiece to be clamped in this application can be a U-shaped part. When using the clamping mechanism of this application to clamp the U-shaped workpiece, the movable arm 30 is adjusted to rotate and slide relative to the support frame 20. This embodiment allows for flexible adjustment of the movable arm 30, which facilitates extending the movable arm 30 into the inside of the U-shaped workpiece to be clamped, ensuring that the plate at one end of the U-shaped workpiece is located between the movable arm 30 and the fixed zero point 50, thereby achieving positioning and clamping with the inner side of the U-shaped workpiece as a reference.

[0045] By operating the movable arm 30 to rotate and slide relative to the support frame 20, the relative position of the movable arm 30 and the workpiece to be clamped can be adjusted according to the shape and structure of the workpiece. This allows for positioning using the inner side of the workpiece as a reference. Subsequently, by adjusting the component 40 to hold the movable arm 30, the workpiece is fixed between the fixed attachment 50 and the movable arm 30. This solves the problem that existing clamping mechanisms cannot use the inner side of the workpiece as a reference for positioning and clamping, improves the stability of the workpiece on the fixture, prevents displacement of the workpiece during measurement, ensures the stability of the workpiece on the fixture, and avoids affecting the reliability of the parameter measurement of the workpiece.

[0046] In one embodiment, please refer to Figure 2 and Figure 3 The support frame 20 has an ear plate 21 at its first end, and a connecting rod 22 on the ear plate 21. The movable arm 30 has a third end and a fourth end, and a connecting groove 31 is formed between the third end and the fourth end of the movable arm 30. The connecting groove 31 extends along the length of the movable arm 30, and the movable arm 30 is connected to the connecting rod 22 through the connecting groove 31. Specifically, there can be two ear plates 21, forming a space between the two ear plates 21 to accommodate the movable arm 30. The two ends of the connecting rod 22 are connected to the two ear plates 21 respectively, and the connecting rod 22 passes through the part of the movable arm 30 located between the two ear plates 21. Thus, the movable arm 30 is rotatably mounted at the first end of the support frame 20.

[0047] In one embodiment, please refer to Figures 4 to 6 The adjustment assembly 40 includes a base 41, a pressing kit 42, a first rotating member 43, and a second rotating member 44.

[0048] Specifically, the base 41 is located at the second end adjacent to the support frame 20; the base 41 serves as the basic component of the adjustment assembly 40, and all other structures of the adjustment assembly 40 are based on the base 41.

[0049] The pressing kit 42 is disposed through the thickness direction of the base 41; the pressing kit 42 is a structure that directly abuts the adjustment component 40 and the movable arm 30, and it can move along the thickness direction of the base 41 to achieve abutment and pressing of the movable arm 30 and separation of them.

[0050] The first rotating member 43 is rotatably connected to the base 41. The first rotating member 43 can be a plate-shaped structure. There can be two first rotating members 43. The two first rotating members 43 are preferably symmetrically arranged on both sides of the base 41. The first rotating member 43 and the base 41 are rotatably connected by the first pin 47.

[0051] The second rotating member 44 is rotatably connected to the first rotating member 43, and the second rotating member 44 is rotatably connected to the pressing kit 42. The second rotating member 44 can be a plate-shaped structure, and there can be two second rotating members 44. The two second rotating members 44 are respectively attached to one first rotating member 43, and the second rotating member 44 and the corresponding attached first rotating member 43 are rotatably connected by the second pin 48.

[0052] It should be noted that the ends of the two second rotating parts 44 that are away from the rotating connection with the first rotating part 43 are connected to each other to form a whole, so that the rotation process of the two second rotating parts 44 can be kept synchronized, and the process of the pressing kit 42 along the thickness direction of the base 41 can be kept stable.

[0053] Specifically, by rotating the second rotating member 44, the pressing component 42 can be moved along the thickness direction of the base 41, so that the movable arm 30 can rotate around the connecting rod 22. During the rotation of the second rotating member 44, the first rotating member 43 can cooperate with the second rotating member 44 to rotate at a certain angle, so that the pressing component 42 can move smoothly along the thickness direction of the base 41.

[0054] In one embodiment, please continue to refer to Figure 4 and Figure 6 The adjusting assembly 40 also includes a third rotating member 45, which is rotatably connected to the pressing kit 42. The third rotating member 45 can be a plate-shaped structure. There are two third rotating members 45, each connected to a second rotating member 44. The third rotating member 45 and the second rotating member 44 can be integrally formed. The two third rotating members 45 are located on both sides of the pressing kit 42, and the two third rotating members 45 are rotatably connected to the pressing kit 42 by a third pin 49.

[0055] In specific operations, such as Figure 4 As shown, the second rotating member 44 is in the pressed state of the adjusting component 40 at this time. The pressing kit 42 can press against the movable arm 30, which can fix the part to be clamped between the movable arm 30 and the fixed part 50 of the inspection tool. When the parameters of the part to be clamped are measured and it is necessary to remove the part to be clamped from between the movable arm 30 and the fixed part 50, the adjusting component 40 needs to be adjusted to the relaxed state. At this time, the second rotating member 44 is adjusted to rotate away from the base 41. The first rotating member 43 cooperates with the second rotating member 44 to rotate a certain angle relative to the base 41. The pressing kit 42 moves away from the movable arm 30 along the thickness direction of the base 41, stops pressing against the movable arm 30, and allows the movable arm 30 to move relative to the fixed part 50, so that the part to be clamped can be removed from between the movable arm 30 and the fixed part 50.

[0056] The second rotating member 44 is provided with a handle 46; specifically, the end of the second rotating member 44 away from the rotating connection point with the first rotating member 43 is connected to each other, and the handle 46 can be set at the connection point of the two second rotating members 44. The handle 46 can increase the lever arm of the second rotating member 44, reduce the difficulty of adjusting the second rotating member 44, and facilitate operation.

[0057] When there are two first rotating members 43, the second rotating member 44 is located between the two first rotating members 43, and a limiting plate 431 is provided between the second rotating members 44. By providing the limiting plate 431, not only can the two first rotating members 43 be connected into a whole, but the rotation direction of the second rotating member 44 can also be limited, so that the second rotating member 44 can only rotate towards the side of the first rotating member 43 where the limiting plate 431 is not provided.

[0058] In one embodiment, please refer to Figure 7 The base 41 is detachably connected to the support frame 20. The support frame 20 is provided with a clearance channel 23, which allows the pressing component 42 to pass through the support frame 20. Specifically, the clearance channel 23 is located near the second end of the support frame 20. When the adjustment component 40 is operated, the pressing component 42 can move relative to the support frame 20 along the clearance channel 23 to press or release the movable arm 30.

[0059] It should be noted that the clearance channel 23 can be set into the shape of a circular hole or a near-circular hole, or it can be set into the shape of a regular polygon or a near-polygon; there is no single limitation here.

[0060] In one embodiment, please refer to Figure 2 and Figure 7 The support frame 20 is provided with a nut 24 located at the clearance channel 23, and the base 41 is provided with an externally threaded sleeve 411 connected to the nut 24. Specifically, the nut 24 is welded and fixed to the support frame 20, and the threaded hole in the nut 24 needs to be aligned with the clearance channel 23. Through the cooperation between the nut 24 and the externally threaded sleeve 411, the base 41 can be detachably installed on the support frame 20. Thus, when the adjustment component 40 fails or is damaged, the adjustment component 40 can be removed from the support frame 20 for repair or replacement, reducing the difficulty of later maintenance of the clamping mechanism.

[0061] In one embodiment, please refer to Figure 6 The pressing assembly 42 includes a main pressing member 421 and a sub-pressing member 422, which are telescopically connected. Specifically, the main pressing member 421 can be rod-shaped, and a receiving hole 4211 is provided at one end of the main pressing member 421 near the movable arm 30, which is axially oriented. The sub-pressing member 422 can be rod-shaped and adapted to the receiving hole 4211. The sub-pressing member 422 and the receiving hole 4211 can be connected by threads. By rotating the sub-pressing member 422, its position in the receiving hole 4211 can be adjusted, thereby adjusting the length of the entire pressing assembly 42. Thus, the movable arm 30 can be adjusted to rotate and slide relative to the support frame 20 according to the specific size of the part to be clamped, so as to clamp and fix parts of different sizes between the movable arm 30 and the fixed attachment 50, thereby improving the applicability of the clamping mechanism.

[0062] In one embodiment, please continue to refer to Figure 2 and Figure 6The main pressing member 421 is rotatably connected to the second rotating member 44, and the sub-pressing member 422 is used to press against the movable arm 30. Specifically, when the second rotating member 44 is operated to rotate towards the side closer to the base 41, so that the adjusting component 40 is adjusted from the relaxed state to the pressed state, the second rotating member 44 drives the sub-pressing member 422 to move along the thickness direction of the base 41 towards the movable arm 30 through the main pressing member 421, and the adjusting component 40 presses against the movable arm 30 through the sub-pressing member 422.

[0063] The sub-pressing member 422 is provided with a pressing contact 4221 at one end. Specifically, the pressing contact 4221 is located at the end of the sub-pressing member 422 away from the main pressing member 421. The pressing contact 4221 and the sub-pressing member 422 can be integrally formed. The cross-sectional area of ​​the pressing contact 4221 is larger than that of the sub-pressing member 422, thereby increasing the area of ​​the sub-pressing member 422 pressing against the movable arm 30 and improving the stability of the adjusting component 40 pressing against the movable arm 30.

[0064] In one embodiment, please refer to Figures 1 to 3 as well as Figure 7 One end of the movable arm 30 is provided with a clamping head 32, and the other end of the movable arm 30 is provided with an operating head 33. Specifically, the clamping head 32 can be located at the third end of the movable arm 30. The clamping head 32 can include two L-plates symmetrically arranged at the third end of the movable arm 30. When the movable arm 30 clamps the workpiece to be clamped, the clamping head 32 can correspond to the position of the fixing part 50 of the inspection fixture, so as to fix the workpiece to be clamped between the clamping head 32 and the fixing part 50. The operating head 33 can be located at the fourth end of the movable arm 30. The operating head 33 can be in the form of a sphere or a near-sphere. The operating head 33 facilitates the user's operation of the movable arm 30 to rotate and slide relative to the support frame 20, thereby improving the convenience of operating the movable arm 30.

[0065] Accordingly, this application also provides a detection system, including a gauge and a clamping mechanism as described in the above embodiments. Please refer to... Figure 1 The fixture includes a main body (not shown) and a fixed part 50. The fixing frame 10 is connected to the main body. The fixture clamps and positions the workpiece to be clamped between the fixed part 50 and the movable arm 30 through a clamping mechanism. The workpiece to be clamped can then be measured by a CMM (coordinate measuring machine) probe to detect parameters such as the quality and size of the workpiece.

[0066] The clamping mechanism and detection system provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A clamping mechanism, characterized in that, include: A mounting bracket (10) is used for mounting on a gauge; A support frame (20) is connected to the fixed frame (10), and the support frame (20) has a first end and a second end; A movable arm (30) is rotatably disposed at the first end of the support frame (20), and the movable arm (30) is configured to be slidably disposed relative to the first end of the support frame (20); An adjustment assembly (40) is disposed at the second end of the support frame (20). The adjustment assembly (40) is configured to allow the movable arm (30) to rotate about the first end of the support frame (20) and / or slide relative to the first end, such that the movable arm (30) cooperates with the fixed part (50) of the inspection tool to clamp the workpiece to be clamped.

2. The clamping mechanism according to claim 1, characterized in that, The support frame (20) has an ear plate (21) at its first end, and the ear plate (21) has a connecting rod (22). The movable arm (30) has a third end and a fourth end, and a connecting groove (31) is formed between the third end and the fourth end of the movable arm (30). The movable arm (30) is connected to the connecting rod (22) through the connecting groove (31).

3. The clamping mechanism according to claim 2, characterized in that, The adjustment component (40) includes: The base (41) is disposed at the second end of the support frame (20); The pressure-retaining component (42) is disposed through the thickness direction of the base (41); The first rotating component (43) is rotatably connected to the base (41); The second rotating member (44) is rotatably connected to the first rotating member (43), and the second rotating member (44) is rotatably connected to the pressing kit (42); The second rotating member (44) can be rotated to move the pressing kit (42) along the thickness direction of the base (41) so that the movable arm (30) can rotate around the connecting rod (22).

4. The clamping mechanism according to claim 3, characterized in that, The adjusting assembly (40) further includes a third rotating member (45) rotatably connected to the pressing assembly (42); and / or, The second rotating member (44) is provided with a handle (46); and / or, The first rotating member (43) includes two members, and the second rotating member (44) is located between the two first rotating members (43). A limit plate (431) is provided between the first rotating members (43).

5. The clamping mechanism according to claim 3, characterized in that, The base (41) is detachably connected to the support frame (20), and the support frame (20) is provided with a clearance channel (23) for the pressure-blocking kit (42) to pass through the support frame (20).

6. The clamping mechanism according to claim 5, characterized in that, The support frame (20) is provided with a nut (24) located at the clearance channel (23), and the base (41) is provided with an external threaded sleeve (411) connected to the nut (24).

7. The clamping mechanism according to claim 5, characterized in that, The pressure-blocking kit (42) includes a main pressure-blocking member (421) and a sub-pressure-blocking member (422), and the main pressure-blocking member (421) and the sub-pressure-blocking member (422) are telescopically connected.

8. The clamping mechanism according to claim 7, characterized in that, The main pressing member (421) is rotatably connected to the second rotating member (44), and the sub-pressing member (422) is used to press against the movable arm (30); and / or, One end of the sub-pressing member (422) is provided with a pressing contact (4221).

9. The clamping mechanism according to claim 1, characterized in that, One end of the movable arm (30) is provided with a clamping head (32), and the other end of the movable arm (30) is provided with an operating head (33).

10. A detection system, characterized in that, The device includes a fixture and a clamping mechanism as described in any one of claims 1 to 9. The fixture includes a main body and a fixed attachment (50). The fixed frame (10) is connected to the main body. The fixture clamps and positions the object to be clamped between the fixed attachment (50) and the movable arm (30) through the clamping mechanism.

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