Auxiliary measurement buckle

Abstract

The utility model discloses a buckle for auxiliary measurement, including the buckle upper block and buckle lower block of mutual activity connection, the buckle upper block is transparent material, its surface is provided with the alignment auxiliary scribe of cross shape, and the sidewall of buckle upper block is provided with the first auxiliary measurement card slot of passing through the measuring tool, the buckle lower block is alloy material, and its top is provided with the angle auxiliary scribe of angle measurement with alignment auxiliary scribe adaptation, and the sidewall of buckle lower block is also provided with the second auxiliary measurement card slot of passing through the measuring tool. The utility model solves the problem of the prior art in the simultaneous measurement of two directions needs to convert the measuring tool or the other auxiliary equipment leads to the measurement complicated problem.

Description

Technical Field

[0001] This utility model belongs to the field of measurement auxiliary tool technology, specifically relating to a buckle for auxiliary measurement. Background Technology

[0002] In manufacturing and various measurement scenarios, measurement plays a crucial role in product quality control. Among numerous measurement tasks, measuring objects with specific shapes and structures often presents many challenges. In particular, when it involves measuring dimensions or positional relationships in two directions, conventional measurement methods have many shortcomings.

[0003] Currently, most common measurement methods can only achieve measurement in a single direction. When faced with situations requiring simultaneous consideration of two directions, it is often necessary to switch measurement tools or methods multiple times, making the operation extremely cumbersome and inefficient. While some existing measurement aids can assist measurement to some extent, they have significant shortcomings in terms of versatility and adaptability. Different measurement objects require different aids. If it is necessary to measure multiple objects of different sizes and shapes involving parameters in two directions, a large number of different types of aids need to be prepared, which is not only costly but also extremely inconvenient to manage and use.

[0004] In conclusion, developing a buckle that can assist in measuring in two directions, is easy to operate, and has strong versatility is of great practical significance and opens up new avenues for effectively solving the dilemmas faced by existing measurement technologies in multi-directional measurements. Utility Model Content

[0005] The purpose of this invention is to provide a buckle for auxiliary measurement, which solves the problem in the prior art that requires switching measuring tools or using other auxiliary equipment when measuring two directions at the same time, resulting in cumbersome measurement.

[0006] The technical solution adopted by this utility model is an auxiliary measuring buckle, including an upper buckle block and a lower buckle block that are movably connected to each other. The upper buckle block is made of transparent material, and its surface is provided with cross-shaped alignment auxiliary engraving lines. The side wall of the upper buckle block is provided with a first auxiliary measuring groove through which the measuring tool passes. The lower clip is made of alloy material. Its top surface is provided with angle auxiliary graduations that are adapted to the alignment auxiliary graduations for angle measurement. The side wall of the lower clip is also provided with a second auxiliary measuring groove through which the measuring tool passes.

[0007] The present invention is further characterized in that, There is a connecting hole at the center of the top of the lower clip, and a connecting shaft is movably connected in the connecting hole. A threaded hole is opened at the bottom of the upper clip corresponding to one end of the connecting shaft. The other end of the connecting shaft is connected to the threaded hole at the bottom of the upper clip. A plastic fixing sleeve is sleeved on the outside of the connecting shaft, and the plastic fixing sleeve is fixedly connected to the connecting shaft.

[0008] A connecting shaft boss is fixed at the bottom of the connecting shaft. The connecting shaft boss is located inside the connecting hole. A strong magnet is provided at the bottom of the connecting hole to attract the connecting shaft boss. A washer is provided on the lower block of the buckle relative to the opening of the connecting hole. The outer side of the washer is fixed to the lower block of the buckle. The connecting shaft passes through the inner hole of the washer. The diameter of the connecting shaft boss is larger than the inner diameter of the washer, and the diameter of the connecting shaft is smaller than the inner diameter of the washer.

[0009] The outer diameter of the plastic retaining sleeve is larger than the inner diameter of the washer, and an interference fit is achieved between the plastic retaining sleeve and the washer.

[0010] The bottom of the clip has a magnetic adsorption layer.

[0011] The magnetic adsorption layer is made of neodymium iron boron magnets electroplated onto the bottom of the buckle.

[0012] The center of the angle auxiliary scribe line is the same point as the center of the connecting hole.

[0013] A threaded hole is opened on one side of the upper block of the buckle, opposite to the position of the first auxiliary measuring slot, and a clamping screw a is installed in the threaded hole.

[0014] A threaded hole is opened on one side of the lower block of the buckle, opposite the position of the second auxiliary measuring slot, and a clamping screw b is installed in the threaded hole.

[0015] The beneficial effects of this utility model are: (1) The auxiliary measuring buckle of this utility model can achieve the measurement reference at different angles by pulling, rotating and pressing the upper and lower blocks and the connecting shaft. It can quickly build two measurement references on the surface of the workpiece. The measuring tool uses the reference as a reference, which simplifies the measurement operation, reduces the reference adjustment time and improves the measurement efficiency. Moreover, the vertical reference plane ensures the accuracy of the measurement direction, reduces the reference deviation caused by human operation and improves the measurement accuracy.

[0016] (2) The auxiliary measurement buckle of this utility model is designed with a magnetic adsorption layer, which allows the buckle to be quickly adsorbed onto the surface of the metal workpiece, making it easy to install and fix. It is especially suitable for on-site measurement scenarios, without the need for additional tooling and fixing devices, further improving the ease of operation.

[0017] (3) The upper block of the buckle for auxiliary measurement of this utility model is made of transparent plastic, which makes it easy to read the angle; the lower block of the buckle mainly contacts the workpiece and is made of hard alloy material, which ensures that the measurement reference surface is not easily deformed or worn during long-term use, thus extending the service life and ensuring the stability of the measurement reference. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the auxiliary measuring buckle of this utility model; Figure 2This is a schematic diagram of the upper block of the buckle in the auxiliary measurement buckle of this utility model; Figure 3 This is a schematic diagram of the structure of the lower block of the buckle in the auxiliary measurement buckle of this utility model; Figure 4 This is a schematic diagram of the connecting shaft in the auxiliary measuring buckle of this utility model; Figure 5 This is a cross-sectional view of the connecting shaft of this utility model in the pulled-out state; Figure 6 This is a cross-sectional view of the connecting shaft of this utility model in the retracted state.

[0019] In the diagram, 1. Upper buckle block, 2. Lower buckle block, 3. Alignment auxiliary scribe line, 4. First auxiliary measuring slot, 5. Clamping screw a, 6. Connecting hole, 7. Angle auxiliary scribe line, 8. Second auxiliary measuring slot, 9. Clamping screw b, 10. Connecting shaft, 11. Washer, 12. Connecting shaft boss, 13. Plastic fixing sleeve, 14. Magnetic adsorption layer, 15. Strong magnet. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1 This utility model relates to an auxiliary measuring clip, such as... Figure 1 As shown, it includes an upper latch block 1 and a lower latch block 2 that are movably connected to each other. The relative angle between the two can be flexibly adjusted through the movable connection. After the required measurement angle is determined, they can be stably fixed, providing convenient support for the subsequent construction of measurement benchmarks.

[0022] like Figure 2 As shown, the upper block 1 of the buckle is made of transparent plastic. Its transparency allows for clear observation of the angle auxiliary graduations 7 of the lower block 2, facilitating angle calibration and reading. The upper surface of the upper block 1 is provided with horizontal and vertical cross-shaped alignment auxiliary graduations 3. These graduations can precisely match the angle auxiliary graduations 7 of the lower block 2, and the relative angle between the upper block 1 and the lower block 2 can be determined by their relative positional relationship. The side wall of the upper block 1 is machined with a groove, which is the first auxiliary measuring groove 4 through which the measuring instrument passes. The end of the groove is chamfered, which not only allows the measuring instrument to be smoothly inserted, but also prevents the edge of the measuring instrument from being damaged by bumps, ensuring the safety of the measuring instrument and the stability of the measurement.

[0023] like Figure 3As shown, the lower clip 2 is made of cemented carbide, which has high strength and high wear resistance. This ensures that the reference contact surface between the lower clip 2 and the workpiece remains flat after long-term use, preventing deformation and wear, and ensuring the stability of the measurement reference. Its top surface has a ring of angle auxiliary graduations 7 with clear degree markings. These graduations match the alignment auxiliary graduations 3 on the upper clip 1. By aligning the auxiliary graduations 3 with the angle auxiliary graduations 7, the relative angle values ​​can be accurately read, meeting the needs of constructing different angle measurement references. The sidewall of the lower clip 2 is also machined with grooves, which serve as the second auxiliary measuring slot 8 through which the measuring tool passes. The slot entrance has rounded corners, making the insertion of the measuring tool smoother and further improving operational convenience. The extension directions of the first auxiliary measuring slot 4 and the second auxiliary measuring slot 8 are perpendicular to each other, allowing for the simultaneous construction of measurement references in both horizontal and vertical directions. This facilitates the measurement of dimensions, positions, and other parameters of the workpiece in corresponding directions, effectively simplifying the measurement operation process, reducing human error, and improving measurement accuracy and efficiency.

[0024] Example 2 This utility model relates to an auxiliary measuring clip, such as... Figure 1 As shown, it includes an upper latch block 1 and a lower latch block 2 that are movably connected to each other, as... Figure 2 As shown, the upper block 1 of the buckle is made of transparent material, and its surface is provided with cross-shaped alignment auxiliary engraving lines 3, and the side wall of the upper block 1 of the buckle is provided with a first auxiliary measuring groove 4 through which the measuring tool passes. like Figure 3 As shown, the lower clip 2 is made of alloy material, and its top surface is provided with an angle auxiliary gradation 7 that is adapted to the alignment auxiliary gradation 3 for angle measurement. The side wall of the lower clip 2 is also provided with a second auxiliary measuring slot 8 that passes through the measuring tool.

[0025] Furthermore, a connecting hole 6 is provided at the center of the top of the lower latch block 2. A connecting shaft 10 is movably connected within the connecting hole 6. The connecting shaft 10 can rotate flexibly and move axially within the connecting hole 6, providing a basis for adjusting the relative angle between the upper latch block 1 and the lower latch block 2. The center of the angle auxiliary engraving 7 is the same point as the center of the connecting hole 6.

[0026] The bottom of the upper buckle block 1 has a threaded hole at one end corresponding to the connecting shaft 10, and the other end of the connecting shaft 10 has an external thread. The upper buckle block 1 is connected to the threaded hole at the bottom of the upper buckle block 1 through threaded engagement. This connection method can not only achieve a stable assembly between the upper buckle block 1 and the connecting shaft 10, but also facilitate subsequent disassembly and maintenance according to usage requirements.

[0027] like Figure 4As shown, a plastic retaining sleeve 13 is fitted onto the outer side of the connecting shaft 10. The plastic retaining sleeve 13 and the connecting shaft 10 are fixed together by a tight fit, and there is no relative displacement between them. When it is necessary to adjust the relative angle between the upper buckle block 1 and the lower buckle block 2, the upper buckle block 1 can be pulled to drive the connecting shaft 10 to move axially along the connecting hole 6, so that the plastic retaining sleeve 13 and the lower buckle block 2 are separated. At this time, the connecting shaft 10 can drive the upper buckle block 1 to rotate around its own axis. After adjusting to the required angle, the upper buckle block 1 is pressed to push the connecting shaft 10 to reset. The plastic retaining sleeve 13 and the lower buckle block 2 are in tight contact. The friction of the plastic material restricts the rotation of the connecting shaft 10, thereby fixing the relative angle between the upper buckle block 1 and the lower buckle block 2, ensuring the stability of the reference during the measurement process.

[0028] Example 3 This utility model relates to an auxiliary measuring buckle, which includes an upper buckle block 1 and a lower buckle block 2 that are movably connected to each other. Figure 2 As shown, the upper block 1 of the buckle is made of transparent material, and its surface is provided with cross-shaped alignment auxiliary engraving lines 3, and the side wall of the upper block 1 of the buckle is provided with a first auxiliary measuring groove 4 through which the measuring tool passes. The lower clip 2 is made of alloy material. Its top surface is provided with an angle auxiliary gradation 7 that is adapted to the alignment auxiliary gradation 3 for angle measurement. The side wall of the lower clip 2 is also provided with a second auxiliary measuring slot 8 that passes through the measuring tool.

[0029] The lower clip 2 has a connecting hole 6 at the top center, and a connecting shaft 10 is movably connected in the connecting hole 6. The bottom of the upper clip 1 has a threaded hole at one end of the connecting shaft 10, and the other end of the connecting shaft 10 is connected to the threaded hole at the bottom of the upper clip 1. A plastic fixing sleeve 13 is sleeved on the outside of the connecting shaft 10, and the plastic fixing sleeve 13 is fixedly connected to the connecting shaft 10.

[0030] Furthermore, the connecting shaft boss 12 is located entirely within the connecting hole 6 at the top center of the snap-fit ​​lower block 2. The two fit together without any obvious gap, providing a limiting basis for the movement of the connecting shaft 10 within the connecting hole 6.

[0031] like Figure 5 As shown, a strong magnet 15 is provided at the bottom of the connecting hole 6. The strong magnet 15 can generate a stable adsorption force on the connecting shaft boss 12. When the upper buckle block 1 and the lower buckle block 2 are in a non-adjusted state, the adsorption force can make the connecting shaft boss 12 fit tightly against the bottom of the connecting hole 6, preventing the connecting shaft 10 from shaking randomly in the connecting hole 6 and ensuring the stability of the overall buckle structure.

[0032] A washer 11 is provided on the lower block 2 relative to the opening of the connecting hole 6. The outer side of the washer 11 is fixedly connected to the lower block 2. The two are firmly connected without relative displacement. The washer 11 can further limit the range of motion of the connecting shaft 10, and at the same time avoid the direct friction between the connecting shaft 10 and the opening of the lower block 2, which would cause wear.

[0033] The connecting shaft 10 passes through the inner hole of the washer 11, and the diameter of the connecting shaft boss 12 is larger than the inner hole diameter of the washer 11. This size design can effectively prevent the connecting shaft boss 12 from coming out of the inner hole of the washer 11, thereby preventing the connecting shaft 10 from separating from the connecting hole 6. At the same time, the diameter of the connecting shaft 10 is smaller than the inner hole diameter of the washer 11, so that when the connecting shaft 10 passes through the inner hole of the washer 11, it can rotate flexibly and move axially smoothly without jamming, ensuring that the relative angle adjustment operation of the upper buckle block 1 and the lower buckle block 2 is smooth.

[0034] Example 4 Based on Embodiment 3 above, the plastic fixing sleeve 13 and the washer 11 of the auxiliary measurement buckle of this utility model have a specific matching relationship in structural design. The outer diameter of the plastic fixing sleeve 13 is larger than the inner diameter of the washer 11. This size difference provides a basis for the two to achieve an interference fit.

[0035] The plastic retaining sleeve 13 is fitted onto the outside of the connecting shaft 10 and fixedly connected to it. The washer 11 is located at the opening of the lower snap-fit ​​block 2 opposite to the connecting hole 6, and is fixedly connected to the lower snap-fit ​​block 2 on its outer side. The connecting shaft 10 passes through the inner hole of the washer 11. When the upper snap-fit ​​block 1 is pressed, causing the connecting shaft 10 to move axially, the plastic retaining sleeve 13 moves closer to the washer 11 synchronously with the connecting shaft 10. Since the outer diameter of the plastic retaining sleeve 13 is larger than the inner diameter of the washer 11, the plastic retaining sleeve 13 will squeeze the edge of the inner hole of the washer 11, thus forming an interference fit.

[0036] This interference fit utilizes the elastic deformation of the plastic material to generate a tight fit force. On one hand, it restricts the axial movement of the connecting shaft 10, preventing it from shifting arbitrarily when not in operation. On the other hand, the friction between the plastic retaining sleeve 13 and the washer 11 prevents the connecting shaft 10 from rotating around its own axis, thus stabilizing the relative angle between the upper clip 1 and the lower clip 2, ensuring that the reference does not shift during measurement and guaranteeing measurement accuracy. When angle adjustment is required, pulling the upper clip 1 to apply axial tension overcomes the interference fit force, causing the plastic retaining sleeve 13 to separate from the washer 11, restoring the rotation and movement capabilities of the connecting shaft 10, and meeting the angle adjustment requirements.

[0037] Example 5 Based on Embodiment 4 above, this embodiment features a threaded hole on one side of the upper block 1 of the auxiliary measuring buckle, positioned opposite the first auxiliary measuring slot 4. The axis of this threaded hole is perpendicular to the extension direction of the first auxiliary measuring slot 4, and the threaded hole penetrates the side wall of the upper block 1 and communicates with the interior of the first auxiliary measuring slot 4, providing a suitable space for the installation of the clamping screw a5. The clamping screw a5 is installed inside the threaded hole, with its external thread precisely engaging with the internal thread of the threaded hole. Rotating the clamping screw a5 allows for axial movement within the threaded hole. When the measuring instrument is inserted into the first auxiliary measuring slot 4, rotating the clamping screw a5 clockwise causes its end to gradually approach and tightly abut against the surface of the measuring instrument, firmly fixing the measuring instrument within the first auxiliary measuring slot 4 using pressure, preventing displacement due to vibration or external force during measurement. When it is necessary to remove the measuring instrument, rotating the clamping screw a5 counterclockwise separates its end from the surface of the measuring instrument, allowing the measuring instrument to be easily removed from the first auxiliary measuring slot 4.

[0038] On one side of the lower clip 2, a threaded hole is also provided opposite to the second auxiliary measuring slot 8. The opening direction of this threaded hole is consistent with that of the threaded hole on the upper clip 1, and its axis is perpendicular to the extension direction of the second auxiliary measuring slot 8. The threaded hole also penetrates the side wall of the lower clip 2 and communicates with the interior of the second auxiliary measuring slot 8. A clamping screw b9 is provided in the threaded hole. The external thread of the clamping screw b9 matches the internal thread of the threaded hole. Rotating the clamping screw b9 controls its movement in the threaded hole. After the measuring instrument is inserted into the second auxiliary measuring slot 8, tighten the clamping screw b9 so that its end fits tightly against the surface of the measuring instrument. The pressure fixes the measuring instrument in the second auxiliary measuring slot 8, ensuring the stability of the measuring instrument during the measurement process. After the measurement is completed, loosen the clamping screw b9 to release the fixing of the measuring instrument, and the measuring instrument can be easily removed. The operation is convenient and can effectively ensure the stability of the measuring instrument during the measurement process, further improving the measurement accuracy.

[0039] During measurement, the upper block 1 and lower block 2 of the buckle are held separately to perform a lengthening operation. At this time, as... Figure 5 As shown, the diameter of the connecting shaft boss 12 of the lower snap-fit ​​block 2 is larger than the inner diameter of the washer 11, which effectively prevents the overall snap-fit ​​structure from separating. Simultaneously, the inner diameter of the washer 11 is larger than the shaft diameter of the connecting shaft 10, allowing the upper snap-fit ​​block 1 and the lower snap-fit ​​block 2 to rotate freely 360° around the connecting shaft 10 within the diameter plane of the connecting shaft 10. The operator can observe and adjust the angle using the alignment auxiliary markings 3 on the upper snap-fit ​​block 1 and the angle auxiliary markings 7 on the lower snap-fit ​​block 2 until the required angle is achieved.

[0040] After adjusting the angle, press the upper clip 1 and the lower clip 2 towards the center. At this point, as shown... Figure 6As shown, the outer diameter of the plastic retaining sleeve 13 on the outside of the connecting shaft 10 is larger than the inner diameter of the washer 11. The plastic retaining sleeve 13 fits tightly with the washer 11, so that the upper buckle block 1 and the lower buckle block 2 are stably connected and no longer rotate relative to each other, thus ensuring that the measurement reference is fixed.

[0041] Then, insert the measuring instrument into the first auxiliary measuring slot 4 of the upper block 1 and the second auxiliary measuring slot 8 of the lower block 2 respectively. After the measuring instrument is in place, tighten the clamping screws on the upper block 1 and the lower block 2 respectively to fix the measuring instrument firmly in the slot, prevent the measuring instrument from shifting during the measurement process, and ensure the accuracy of the measurement results.

[0042] Example 6 Based on Embodiment 5 above, the bottom of the lower block 2 of the auxiliary measurement buckle of this utility model is specially provided with a magnetic adsorption layer 14 for adsorption and fixation. The magnetic adsorption layer 14 is the core structure for realizing the quick positioning and fixation of the buckle and the metal workpiece, which can effectively improve the convenience of measurement operation and the stability of the reference.

[0043] The magnetic adsorption layer 14 uses neodymium iron boron magnets as the core magnetic material. Neodymium iron boron magnets possess high magnetic adsorption strength, ensuring stable adsorption of metal workpieces while strictly controlling their thickness. This prevents the bottom of the lower clip 2 from not adhering tightly to the workpiece surface due to excessive magnetic layer thickness, thus affecting the accuracy of the measurement reference. The magnetic adsorption layer 14 is processed to the bottom of the lower clip 2 through electroplating. During the electroplating process, the coverage and thickness uniformity of the magnetic material can be precisely controlled, ensuring a firm bond between the magnetic adsorption layer 14 and the bottom of the lower clip 2. This prevents problems such as detachment and cracking, ensuring stable adsorption performance during long-term use.

[0044] When performing a measurement operation, simply place the magnetic adsorption layer 14 at the bottom of the clip block 2 close to the surface of the metal workpiece. With the strong adsorption force of the neodymium iron boron magnet, the clip can be quickly fixed to the workpiece surface without the need for additional tooling fixtures or manual pressing. This not only simplifies the preparation process before measurement but also avoids the reference offset that may occur during manual fixing. At the same time, the stable adsorption effect ensures that the clip remains in close contact with the workpiece surface during the measurement process, providing reliable reference support for subsequent angle adjustment, gauge installation, and dimensional measurement, further ensuring measurement accuracy.

[0045] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0046] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0047] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A supplementary measuring buckle, characterized in that, It includes a snap-on upper block (1) and a snap-on lower block (2) that are movably connected to each other. The snap-on upper block (1) is made of transparent material and has cross-shaped alignment auxiliary lines (3) on its surface. The side wall of the snap-on upper block (1) is provided with a first auxiliary measuring groove (4) through which the measuring tool passes. The lower clip (2) is made of alloy material. Its top surface is provided with an angle auxiliary etched line (7) that is adapted to the alignment auxiliary etched line (3) for angle measurement. The side wall of the lower clip (2) is also provided with a second auxiliary measuring slot (8) that passes through the measuring tool.

2. The auxiliary measurement buckle of claim 1, wherein, The lower buckle block (2) has a connecting hole (6) at the top center. A connecting shaft (10) is movably connected in the connecting hole (6). A threaded hole is opened at the bottom of the upper buckle block (1) corresponding to one end of the connecting shaft (10). The other end of the connecting shaft (10) is connected to the threaded hole at the bottom of the upper buckle block (1). A plastic fixing sleeve (13) is sleeved on the outside of the connecting shaft (10). The plastic fixing sleeve (13) is fixedly connected to the connecting shaft (10).

3. The auxiliary measurement buckle of claim 2, wherein, The bottom of the connecting shaft (10) is fixed with a connecting shaft boss (12), the connecting shaft boss (12) is located inside the connecting hole (6), the bottom of the connecting hole (6) is provided with a strong magnet (15) to attract the connecting shaft boss (12), the lower buckle block (2) is provided with a washer (11) relative to the opening of the connecting hole (6), the outer side of the washer (11) is fixed to the lower buckle block (2), and the connecting shaft (10) passes through the inner hole of the washer (11); The diameter of the connecting shaft boss (12) is greater than the inner diameter of the washer (11), and the diameter of the connecting shaft (10) is less than the inner diameter of the washer (11).

4. The auxiliary measurement buckle of claim 3, wherein, The outer diameter of the plastic retaining sleeve (13) is larger than the inner diameter of the washer (11), and an interference fit is achieved between the plastic retaining sleeve (13) and the washer (11).

5. The auxiliary measuring buckle according to claim 1, characterized in that, The bottom of the buckle lower block (2) is provided with a magnetic adsorption layer (14).

6. The auxiliary measuring buckle according to claim 5, characterized in that, The magnetic adsorption layer (14) is electroplated onto the bottom of the buckle block (2) using neodymium iron boron magnets.

7. The auxiliary measuring buckle according to claim 1, characterized in that, The center of the angle auxiliary engraving (7) is the same point as the center of the connecting hole (6).

8. The auxiliary measuring buckle according to claim 1, characterized in that, The upper block (1) of the buckle has a threaded hole on one side relative to the first auxiliary measuring slot (4), and a clamping screw a (5) is provided in the threaded hole.

9. The auxiliary measuring buckle according to claim 1, characterized in that, The buckle lower block (2) has a threaded hole on one side opposite the second auxiliary measuring slot (8), and a clamping screw b (9) is provided in the threaded hole.

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