Shaft nut assembly and testing mechanism

Abstract

The present disclosure relates to the technical field of shaft torque detection, and in particular to a shaft nut assembly test mechanism for electronic products, the mechanism comprising a test platform and a nut locking assembly, the nut locking assembly being arranged on one side of the test platform; a carrier for clamping a rotating structure being arranged on the test platform; the nut locking assembly comprising an electric starter and a first moving structure, the first moving structure being connected to the electric starter and being used to drive the electric starter to move between a first position and a second position, the carrier being arranged at the second position; the electric starter moves to the first position to clamp the nut, and the electric starter moves to the second position, being arranged opposite to the carrier, and outputting a set torque value to lock the nut on the shaft of the rotating structure. The present disclosure completes all operations automatically, the process is stable, and is less affected by human factors. Complex processes are disassembled, the time of a single workstation is reduced, and production efficiency is effectively improved. Test data is automatically collected by the equipment, and the device has the ability to monitor the process and quality status in real time.

Description

Technical Field

[0001] The present disclosure relates to the technical field of shaft torque detection, and in particular to a shaft nut assembly and testing mechanism for electronic products. Background Art

[0002] The laptop computer consists of a display screen and an operating system, which are connected by a rotating structure. The main component of the rotating structure is a shaft with a certain torque. Figure 1 Figure 1 shows an exploded view of the rotating shaft. The torque on rotating shaft 12' is generated by the rotational friction between rotating arm 13', friction member 14', and friction member 17'. The pressure in these components is derived from the axial pressure of spring 18'. During assembly of the rotating structure, nut 19' is used for locking, and the torque of rotating structure 1' is adjusted by tightening nut 19'.

[0003] Currently, manual adjustment is used to tighten nuts in rotating mechanisms, as well as to test and adjust torque in rotating mechanisms. However, manual adjustment is less controllable. For example, manual tightening of nuts using an electric motor is less stable and consistent than manual tightening of nuts, resulting in significant torque variations after tightening, potentially requiring more man-hours to adjust torque. Summary of the Invention

[0004] In order to solve at least the above technical problems existing in the prior art, an embodiment of the present disclosure provides a shaft nut assembly and testing mechanism.

[0005] An embodiment of the present disclosure provides a shaft nut assembly test mechanism, comprising a test platform and a nut locking assembly, wherein the nut locking assembly is arranged on one side of the test platform; a carrier for clamping a rotating structure is provided on the test platform; the nut locking assembly comprises an electric starter and a first moving structure, the first moving structure is connected to the electric starter and is used to drive the electric starter to move between a first position and a second position, and the carrier is arranged at the second position; the electric starter moves to the first position to clamp the nut, and the electric starter moves to the second position, is arranged opposite to the carrier, and outputs a set torque value to lock the nut on the shaft of the rotating structure.

[0006] In some embodiments, a torque testing assembly and a torque adjustment assembly are further included on one side of the test platform; the rotating structure includes a rotating arm; the torque testing assembly is configured to twist the rotating arm and obtain the current torque value when twisting the rotating arm; the torque adjustment assembly is configured to output a set torque value to tighten the nut based on the current torque value.

[0007] In some embodiments, a torque re-measurement component is further included on one side of the test platform; the torque re-measurement component is configured to twist the rotating arm and obtain the current torque value when twisting the rotating arm.

[0008] In some embodiments, the test platform includes a turntable and a drive motor, the lower surface of the turntable is connected to the drive motor, and the drive motor is used to drive the turntable to rotate; the nut locking assembly, the torque testing assembly, the torque adjustment assembly and the torque re-measurement assembly are arranged in sequence around the turntable; a plurality of the carriers are provided on the upper surface of the turntable, and the carriers rotate synchronously with the turntable and can be moved in sequence to the operating stations corresponding to the nut locking assembly, the torque testing assembly, the torque adjustment assembly and the torque re-measurement assembly.

[0009] In some embodiments, the first movable structure includes a first slide rail device and a second slide rail device; the second slide rail device is used to slide on the first slide rail device and realize the movement of the electric starter between the first position and the second position; the electric starter is used to slide on the second slide rail device and realize the lifting and lowering movement of the electric starter.

[0010] In some embodiments, the nut locking assembly further includes a nut conveying structure; the nut conveying structure is used to convey the nut to a nut loading station opposite to the first position.

[0011] In some embodiments, the torque testing assembly and the torque retesting assembly include a first servo motor, a torque sensor and a clamping structure; the output shaft of the first servo motor is connected to one end of the torque sensor, and the clamping structure is connected to the other end of the torque sensor; the clamping structure is used to clamp with the rotating arm, and the torque sensor is used to obtain the current torque value when twisting the rotating arm.

[0012] In some embodiments, the torque adjustment assembly includes a second servo motor and a locking head; the output shaft of the second servo motor is connected to the locking head, and the locking head is used to screw the nut.

[0013] In some embodiments, the torque testing assembly and the torque re-measurement assembly further include a first support structure, and the torque adjustment assembly further includes a second support structure; the first support structure includes a third slide rail device, and the torque testing assembly or the torque re-measurement assembly is arranged on the third slide rail device, and the third slide rail device is used to realize the lifting and lowering of the torque testing assembly or the torque re-measurement assembly; the second support structure includes a fourth slide rail device, and the torque adjustment assembly is arranged on the fourth slide rail device, and the fourth slide rail device is used to realize the lifting and lowering of the torque adjustment assembly.

[0014] In some embodiments, a conveying component is also included, which includes a qualified product conveying structure and a defective product conveying structure; the qualified product conveying structure is used to clamp and convey qualified products on the carrier; the defective product conveying structure is used to clamp and convey defective products on the carrier.

[0015] The embodiment of the present disclosure provides a shaft nut assembly testing mechanism. When in use, the nut locking, rotation structure testing, adjustment and retesting operations can be completed automatically. Compared with manual operation, the process is stable and less affected by human factors. At the same time, the operation of each part cooperates with the turntable of the test carrier to disassemble the complex process, reduce the time of a single workstation, and effectively improve production efficiency. In addition, the test data is automatically collected by the equipment, which has the ability to monitor the process and quality status in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood by reading the detailed description below with reference to the accompanying drawings, in which several embodiments of the present disclosure are shown by way of example and not limitation, wherein:

[0017] In the drawings, the same or corresponding reference numerals denote the same or corresponding parts.

[0018] Figure 1 This is the exploded view of the rotating structure;

[0019] Figure 2 This is a structural diagram of a shaft nut assembly and testing mechanism according to an embodiment of the present disclosure;

[0020] Figure 3 This is a front view of a shaft nut assembly and testing mechanism according to an embodiment of the present disclosure;

[0021] Figure 4 This is a structural schematic diagram of a test platform in a shaft nut assembly test mechanism according to an embodiment of the present disclosure;

[0022] Figure 5 This is a schematic structural diagram of a carrier in a shaft nut assembly and testing mechanism according to an embodiment of the present disclosure;

[0023] Figure 6 This is a structural schematic diagram of a nut locking assembly in a shaft nut assembly and testing mechanism according to an embodiment of the present disclosure;

[0024] Figure 7 Schematic diagram of the structure of a torque testing component / torque retesting component in a shaft nut assembly testing mechanism according to an embodiment of the present disclosure;

[0025] Figure 8 This is a structural schematic diagram of a torque adjustment component in a shaft nut assembly and testing mechanism according to an embodiment of the present disclosure;

[0026] Figure 9 This is a structural schematic diagram of a conveying component in a shaft nut assembly and testing mechanism according to an embodiment of the present disclosure.

[0027] In the picture:

[0028] 1': rotation structure;

[0029] 11': Carrying part; 12': Rotating shaft; 13': Rotating arm; 14'-17': Friction part; 18': Carrying part; 19': Carrying part;

[0030] 10: Test platform; 20: Nut locking assembly; 30: Torque test assembly; 40: Torque adjustment assembly; 50: Torque retest assembly; 60: Conveyor assembly; 70: Central control display; 80: Work cabinet;

[0031] 11: Carrier; 111: Card slot; 12: Turntable;

[0032] 21: Electric starter; 22: First moving structure; 221: First slide rail device; 222: Second slide rail device; 23: Nut conveying structure; 231: Nut vibrating plate; 232: Nut conveying rail; 233: Limiting structure;

[0033] 31: First support structure; 32: Third slide rail device; 33: First servo motor; 34: Torque sensor; 35: Clamping structure;

[0034] 41: Second support structure; 42: Fourth slide rail device; 43: Second servo motor; 44: Lock;

[0035] 61: Conveying structure for qualified products; 62: Conveying structure for unqualified products. DETAILED DESCRIPTION

[0036] To make the purposes, features, and advantages of the present disclosure more apparent and understandable, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present disclosure without creative work shall fall within the scope of protection of the present disclosure.

[0037] like Figure 2 and Figure 3 As shown, an embodiment of the present disclosure provides a shaft nut assembly testing mechanism, including a work cabinet 80, on the table of which are arranged a test carrier 10, a nut locking assembly 20, a torque testing assembly 30, a torque adjustment assembly 40, a torque retest assembly 50, a conveying assembly 60 and a central control display 70.

[0038] The nut locking assembly 20, torque testing assembly 30, torque adjustment assembly 40, torque retest assembly 50, and conveying assembly 60 are arranged around the periphery of the test platform 10. As the test platform 10 rotates, the test operation is gradually completed. The following describes the various components of the spindle nut assembly test mechanism with reference to the accompanying drawings.

[0039] In some embodiments, as Figure 4 and 5 As shown, a carrier 11 for clamping the rotating structure 1' is provided on the test platform 10, and the test process of the rotating structure 1' is completed on the carrier 11. Figure 1 As shown, the rotating structure 1' includes a carrier component 11'. One end of a rotating shaft 12' is connected to the carrier component 11'. The carrier 11 has a slot 111 for engaging the carrier component 11'. When installing the rotating structure 1', the carrier component 11' is simply engaged with the slot 111. For example, the rotating structure 1' and the carrier 11 are installed perpendicular to the surface of the test platform 10. In other words, the rotating structure 1' can be inserted and removed by raising or lowering the carrier 11 in a direction perpendicular to the surface of the test platform 10.

[0040] like Figures 2 to 4 As shown, the test platform 10 includes a turntable 12 and a drive motor (not shown), the lower surface of the turntable 12 is connected to the drive motor, and the drive motor is used to drive the turntable 12 to rotate; the nut locking assembly 20, the torque testing assembly 30, the torque adjustment assembly 40, the torque re-measurement assembly 50 and the conveying assembly 60 are arranged in sequence around the turntable 12; a plurality of carriers 11 are provided on the upper surface of the turntable 12, and the carriers 11 rotate synchronously with the turntable 12, and can be moved in sequence to the operating stations corresponding to the nut locking assembly 20, the torque testing assembly 30, the torque adjustment assembly 40, the torque re-measurement assembly 50 and the conveying assembly 60.

[0041] For example, the turntable 12 is a circular turntable 12, and the driving motor is a stepping motor, which is arranged at the center of the circle of the lower surface of the circular turntable 12. The stepping motor drives the circular turntable 12 to rotate according to a set rotation angle to realize the flow of the rotating structure 1' on the carrier 11. Multiple carriers 11 are evenly distributed on the edge of the circular turntable 12.

[0042] The turntable 12 can complete the switching of operating stations by rotating itself, disassembling complex processes, reducing the operation time of a single station, and effectively improving production efficiency.

[0043] For example, Figure 7 and Figure 8As shown, the torque testing assembly 30 and the torque re-measurement assembly 50 also include a first supporting structure 31, and the torque adjustment assembly 40 also includes a second supporting structure 41; the first supporting structure 31 includes a third slide rail device 32, and the torque testing assembly 30 or the torque re-measurement assembly 50 is arranged on the third slide rail device 32, and the third slide rail device 32 is used to realize the lifting and lowering of the torque testing assembly 30 or the torque re-measurement assembly 50; the second supporting structure 41 includes a fourth slide rail device 42, and the torque adjustment assembly 40 is arranged on the fourth slide rail device 42, and the fourth slide rail device 42 is used to realize the lifting and lowering of the torque adjustment assembly 40.

[0044] like Figure 5 As shown, after the rotating structure 1' is installed on the carrier 11, one end of the mounting nut of the rotating shaft faces upward, and the rotating arm extends in the opposite direction. Therefore, the height of the first support structure 31 and the second support structure 41 can be adjusted to make the connected components compatible with the turntable 12. In other words, the torque testing assembly 30 and the torque retesting assembly 50 need to operate the rotating arm. Therefore, the height of the first support structure 31 is lower than the height of the turntable 12, so that the torque testing assembly 30 and the torque retesting assembly 50 are located below the edge of the turntable 12 to complete the corresponding operation. The torque adjustment assembly 40 needs to operate the nut. Therefore, the height of the second support structure 41 is higher than the height of the turntable 12, so that the torque adjustment assembly 40 is located above the edge of the turntable 12 to complete the corresponding operation.

[0045] like Figure 6 As shown, the nut locking assembly 20 includes an electric starter 21 and a first movable structure 22. The first movable structure 22 is connected to the electric starter 21 and is used to drive the electric starter 21 to move between a first position and a second position. The carrier 11 is set at the second position; the electric starter 21 moves to the first position to clamp the nut, and the electric starter 21 moves to the second position, is set opposite to the carrier 11, and outputs a set torque value to lock the nut on the rotating shaft of the rotating structure 1'.

[0046] For example, the first movable structure 22 includes a first slide rail device 221 and a second slide rail device 222; the second slide rail device 222 is used to slide on the first slide rail device 221 and realize the movement of the electric starter 21 between the first position and the second position; the electric starter 21 is used to slide on the second slide rail device 222 and realize the lifting and lowering movement of the electric starter 21.

[0047] The electric lift 21 is initially raised, meaning it is not in contact with the structure at the workstation corresponding to the second position. The electric lift 21 moves to the first position and then descends, allowing the tip of the electric lift 21 to pick up the nut at the workstation corresponding to the first position. For example, the tip of the electric lift 21 may be a magnet that magnetically attracts the nut, or may include a pneumatic structure that pneumatically attracts the nut. The electric lift 21 then rises and moves to the second position, descending after reaching the second position. The electric lift 21 then begins to work, screwing the nut onto the shaft.

[0048] In the embodiment of the present disclosure, the motor 21 outputs the same torque for locking each nut, thereby ensuring the stability and consistency of the nuts locked on the shaft.

[0049] For example, continue to refer to Figure 6 The nut locking assembly 20 also includes a nut conveying structure 23; the nut conveying structure 23 is used to convey the nuts to the nut loading station opposite to the first position. For example, the nut conveying structure 23 includes a nut vibration plate 231, a nut conveying rail 232 and a limiting structure 233. The nut raw material is placed in the nut vibration plate 231, and the nut is moved in a flat state on the nut conveying rail 232 through vibration, and finally moves to the limiting structure 233 at the end. The limiting structure 233 is like a slot 111 that half surrounds the nut. The position of the limiting structure 233 is the nut loading station opposite to the first position. When a nut is taken away, the next nut automatically fills its place.

[0050] like Figure 2 and Figure 3 As shown, in the embodiment of the present disclosure, the torque test assembly 30 is configured to twist the arm and obtain the current torque value when twisting the arm. The current torque value is the torque of the rotating structure 1' after the nut is locked. It is necessary to judge whether the current torque value meets the requirements, that is, it is necessary to compare the current torque value with the pre-set torque value. In the embodiment of the present disclosure, a control system is also included, and the obtained current torque value is sent to the control system for comparison. If the current torque value is the same as the pre-set torque value or the deviation is within the set range, it means that the current torque value of the rotating structure 1' is qualified. For example, if the deviation between the current torque value and the pre-set torque value is large, the output torque value required by the torque adjustment assembly 40 is calculated based on the specific deviation and sent to the torque adjustment assembly 40.

[0051] In the disclosed embodiment, the torque adjustment assembly 40 is configured to output a set torque value for tightening the nut based on the current torque value. After the nut is tightened again, a new torque value is obtained. The adjustment range is determined based on the results of the first test, ensuring the accuracy of the torque adjustment.

[0052] For example, Figure 7As shown, the torque testing assembly 30 includes a first servo motor 33, a torque sensor 34 and a clamping structure 35; the output shaft of the first servo motor 33 is connected to one end of the torque sensor 34, and the clamping structure 35 is connected to the other end of the torque sensor 34; the clamping structure 35 is used to clamp with the rotating arm, and the torque sensor 34 is used to obtain the current torque value when the rotating arm is twisted.

[0053] For example, the clamping structure 35 includes two parallel columns that are spaced apart, and the rotating arm is used to pass through the gap between the two columns to form a clamping connection.

[0054] During torque testing, the first servo motor 33 provides rotational power, accurately controlling the starting angle, rotation angle, and speed. The current torque value is acquired via the torque sensor 34. Since the rotating arm and the engaging structure 35 rotate synchronously, the current torque value of the rotating structure 1' is simultaneously measured. The torque sensor 34 then transmits this acquired torque value to the control system.

[0055] For example, Figure 8 As shown, the torque adjustment assembly 40 includes a second servo motor 43 and a locking head 44. The output shaft of the second servo motor 43 is connected to the locking head 44, which is used to tighten the nut. The second servo motor 43 provides power to the nut, accurately controlling the rotation angle, speed, and forward and reverse directions. The locking head 44 is adapted to the nut and can engage the nut. For example, the locking head 44 is a floating locking head 44.

[0056] like Figure 2 and Figure 3 As shown, in some embodiments, the torque re-measurement assembly 50 is configured to twist the arm and obtain the current torque value when the arm is twisted. The structure of the torque re-measurement assembly 50 is the same as that of the torque testing assembly 30, and the difference between the two is the location of the installation. The torque re-measurement assembly 50 is installed in the station after the torque adjustment assembly 40.

[0057] The torque of the rotating structure 1' after adjustment is measured by the torque re-measurement assembly 50, further ensuring that the torque of the rotating structure 1' is within the set range. In the embodiment of the present disclosure, more sets of torque adjustment assemblies 40 and torque re-measurement assemblies 50 can be included to ensure the torque accuracy of the rotating structure 1' through more adjustments and measurements.

[0058] like Figure 9As shown, the conveyor assembly 60 includes a qualified product conveying structure 61 and a rejected product conveying structure 62. The qualified product conveying structure 61 is used to grip and convey qualified products from the carrier 11, while the rejected product conveying structure 62 is used to grip and convey rejected products from the carrier 11. After testing is completed, the qualified and rejected products continue to rotate on the turntable 12 along with the carrier 11, for example, to the first or second subsequent workstation. The qualified and rejected products are then conveyed by the conveyor structure.

[0059] For example, the qualified product conveying structure 61 and the unqualified product conveying structure 62 include gripping manipulators that can grasp qualified and unqualified products and move them to designated locations for unified processing. For example, they may also include conveyor troughs along which qualified and unqualified products flow to designated locations. Alternatively, the manipulator's moving structure may utilize a slide rail or slider. This is not limited to the manipulator's moving structure in the disclosed embodiments.

[0060] For example, a torque adjustment assembly and a torque testing assembly can be added to the reject conveying structure 62. The structures of the torque adjustment and testing assemblies are identical to those described above, and they are positioned vertically opposite each other. A robot moves the reject to a position between the two assemblies, where the torque is first adjusted by the torque adjustment assembly and then tested by the torque testing assembly. If the reject passes, the robot retrieves it. If it still fails, the adjustment and testing procedures are repeated.

[0061] For example, in the disclosed embodiments, the first, second, third, and fourth slide rail devices are configured by combining a motor, a lead screw, a slider, and a track. For example, the motor drives the lead screw to rotate, the slider is rotationally connected to the lead screw, and the slider is disposed on the track, and the lead screw drives the slider to slide on the track. For example, this is a KK moving module. In the disclosed embodiments, the structures of the first, second, third, and fourth slide rail devices are not limited.

[0062] The embodiment of the present disclosure provides a shaft nut assembly testing mechanism. When in use, the nut locking, testing, adjustment and retesting operations of the rotating structure 1' can be completed automatically. Compared with manual operation, the process is stable and less affected by human factors. At the same time, the operation of each part cooperates with the turntable 12 of the test carrier 10 to disassemble the complex process, reduce the time of a single workstation, and effectively improve production efficiency. In addition, the test data is automatically collected by the equipment, which has the ability to monitor the process and quality status in real time.

[0063] In the description of this specification, the reference terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and integrate different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless they are mutually inconsistent.

[0064] 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 being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Throughout the present disclosure, "plurality" means two or more, unless otherwise specifically defined.

[0065] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A shaft nut assembly test mechanism, characterized in that: It comprises a test platform (10) and a nut locking assembly (20), wherein the nut locking assembly (20) is arranged on one side of the test platform (10); The test platform (10) is provided with a carrier (11) for clamping the rotating structure (1'); The nut locking assembly (20) includes an electric starter (21) and a first moving structure (22), wherein the first moving structure (22) is connected to the electric starter (21) and is used to drive the electric starter (21) to move between a first position and a second position; The electric starter (21) moves to the first position to clamp the nut (19'), and the electric starter (21) moves to the second position to be arranged opposite to the carrier (11), and outputs a set torque value to lock the nut (19') on the rotating shaft of the rotating structure (1'); The rotating shaft nut assembly test mechanism is characterized in that it further comprises a torque testing component (30) and a torque adjustment component (40) arranged on one side of the test platform (20); The rotating structure (1') comprises a rotating arm (13'); The torque testing assembly (30) is configured to twist the rotating arm (13') and obtain a current torque value when twisting the rotating arm (13'); The torque adjustment component (40) is configured to output a set torque value to screw the nut (19') according to the current torque value.

2. The shaft nut assembly and testing mechanism according to claim 1, characterized in that: It also includes a torque retest component (50) disposed on one side of the test platform (10); The torque re-measurement component (50) is configured to twist the rotating arm (13') and obtain a current torque value when twisting the rotating arm (13').

3. The shaft nut assembly and testing mechanism according to claim 2, characterized in that: The test platform (10) comprises a turntable (12) and a drive motor, wherein the lower surface of the turntable (12) is connected to the drive motor, and the drive motor is used to drive the turntable (12) to rotate. The nut locking assembly (20), the torque testing assembly (30), the torque adjusting assembly (40) and the torque retesting assembly (50) are sequentially arranged around the turntable (12); A plurality of carriers (11) are provided on the upper surface of the turntable (12), and the carriers (11) rotate synchronously with the turntable (12) and can be moved in sequence to the operating positions corresponding to the nut locking assembly (20), the torque testing assembly (30), the torque adjustment assembly (40) and the torque retesting assembly (50).

4. The spindle nut assembly and testing mechanism according to any one of claims 1 to 3, characterized in that: The first moving structure (22) comprises a first slide rail device (221) and a second slide rail device (222); The second slide rail device (22) is used to slide on the first slide rail device (221) and realize the movement of the electric starter (21) between the first position and the second position; The electric lift (21) is used to slide on the second slide rail device (222) and realize the lifting and lowering movement of the electric lift (21).

5. The spindle nut assembly and testing mechanism according to any one of claims 1 to 3, characterized in that: The nut locking assembly (20) further includes a nut conveying structure (23); The nut conveying structure (23) is used to convey the nut (19') to a nut loading station opposite to the first position.

6. The shaft nut assembly and testing mechanism according to claim 2, characterized in that: The torque testing assembly (30) and the torque retesting assembly (50) include a first servo motor (33), a torque sensor (34) and a clamping structure (35); The output shaft of the first servo motor (33) is connected to one end of the torque sensor (34), and the clamping structure (35) is connected to the other end of the torque sensor (34); the clamping structure (35) is used to clamp with the rotating arm (13'), and the torque sensor (34) is used to obtain the current torque value when twisting the rotating arm (13').

7. The shaft nut assembly and testing mechanism according to claim 2, characterized in that: The torque adjustment assembly (40) includes a second servo motor (43) and a lock head (44); The output shaft of the second servo motor (43) is connected to the lock head (44), and the lock head (44) is used to screw the nut (13').

8. The shaft nut assembly and testing mechanism according to claim 6, characterized in that: The torque testing assembly (30) and the torque retesting assembly (50) further include a first supporting structure (31), and the torque adjusting assembly (40) further includes a second supporting structure (41); The first supporting structure (31) includes a third slide rail device (32), the torque testing assembly (30) or the torque retesting assembly (50) is arranged on the third slide rail device (32), and the third slide rail device (32) is used to realize the lifting and lowering of the torque testing assembly (30) or the torque retesting assembly (50); The second supporting structure (41) includes a fourth slide rail device (42), the torque adjustment assembly (40) is arranged on the fourth slide rail device (42), and the fourth slide rail device (42) is used to realize the lifting and lowering of the torque adjustment assembly (40).

9. The spindle nut assembly and testing mechanism according to any one of claims 1 to 3, characterized in that: It also includes a conveying assembly (60), wherein the conveying assembly (60) includes a qualified product conveying structure (61) and a failed product conveying structure (62); The qualified product conveying structure (61) is used for clamping and conveying qualified products on the carrier (11); the unqualified product conveying structure (62) is used for clamping and conveying unqualified products on the carrier (11).

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