Constant-torque tightening tool and system for precise locking nut of ball screw

Abstract

The utility model discloses a constant-torque tightening tool and system for a precise locking nut of a ball screw. The constant-torque tightening tool for the precise locking nut of the ball screw comprises a nut wrench, a lead screw locker, a sleeve and a torque wrench, the lead screw locker is located on one side of the nut wrench, a through hole is formed in the side, facing the nut wrench, of the lead screw locker, and a hexagonal hole is formed in the side, back to the nut wrench, of the lead screw locker; the top of the sleeve is hexagonal and is embedded into a hexagonal hole of the lead screw locker; the torque wrench is connected with the bottom of the sleeve. The locking nut is limited through the nut wrench, the lead screw is limited through the lead screw locker, the lead screw locker and the lead screw are driven to rotate through the sleeve and the torque wrench, and relative rotation is generated between the lead screw and the locking nut. The locking torsion of the lead screw locking nut can be accurately controlled, and the transmission precision of the lead screw is ensured; the nut wrench can be flexibly disassembled, and the direction and position can be conveniently adjusted. Precise parts such as bearings and lead screws are protected.

Description

Technical Field

[0001] This utility model relates to the field of mechanical parts assembly technology, specifically to a ball screw precision locking nut torque tightening tool and system. Background Technology

[0002] When a machine tool uses a ball screw drive, a precision lock nut is typically used to lock the screw to a fixed seat at its fixed end. The tightness of the lock nut directly affects the transmission accuracy of the screw. Therefore, the lock nut must be tightened precisely to the standard torque.

[0003] When the lead screw is installed in a fixed manner, it can be tightened using a torque wrench and a lock nut wrench head. When the lead screw is installed in a rolling manner, the precision lock nut rolls with the lead screw along with the bearing, making it impossible to apply force with the wrench. In such cases, improper methods such as hammering are required to tighten the lock nut. Excessive hammering can reduce the precision of the thrust ball bearing of the locking lead screw or even damage it. Hammering the lock nut also prevents control of the tightening torque and can damage the lock nut itself.

[0004] In summary, existing lead screw installation methods have technical problems such as the inability to control the locking torque and the easy damage to the lead screw and locking nut. Utility Model Content

[0005] The purpose of this application is to overcome the above-mentioned technical deficiencies and propose a ball screw precision locking nut torque tightening tool and system to solve the technical problems of the inability to control the locking torque and the easy damage to the screw and locking nut in the prior art.

[0006] To achieve the above-mentioned technical objectives, this application adopts the following technical solution:

[0007] In a first aspect, this application provides a precision locking nut tightening tool for ball screws, including a nut wrench, a screw locking device, a socket, and a torque wrench:

[0008] Nut wrench;

[0009] A lead screw locking device is located on one side of the nut wrench. The lead screw locking device has a through hole on the side facing the nut wrench and a hexagonal hole on the side facing away from the nut wrench.

[0010] A sleeve, the top of which is hexagonal and embedded in the hexagonal hole of the lead screw lock;

[0011] A torque wrench, wherein the torque wrench is connected to the bottom of the socket.

[0012] In some embodiments of this application, the top of the nut wrench has an opening, and the inner surface of the opening has a plurality of spaced protrusions.

[0013] In some embodiments of this application, the lead screw locking device includes a tension ring, a tension sleeve, and a locking plate arranged coaxially. The tension ring is sleeved around the tension sleeve, the tension sleeve and the locking plate are stacked and distributed, and the locking plate is connected to the sleeve.

[0014] In some embodiments of this application, the tensioning sleeve includes an inner ring and an outer ring arranged coaxially, the diameter of the outer ring is larger than the diameter of the inner ring, the outer surface of the inner ring is provided with an external thread structure, and the outer ring is provided with a plurality of circumferentially distributed connecting bolts on the side surface facing the locking plate, and the center of the tensioning sleeve has a through hole that extends axially and penetrates the inner ring and the outer ring.

[0015] In some embodiments of this application, the tensioning ring has a through hole at its center, and the inner surface of the through hole is provided with an internal thread structure. The internal thread structure of the tensioning ring is connected to the external thread structure of the tensioning sleeve.

[0016] In some embodiments of this application, the locking plate has a through hexagonal hole at its center, and the locking plate has a plurality of bolt holes distributed circumferentially around its periphery. The bolt holes of the locking plate are connected one-to-one with the connecting bolts of the tensioning sleeve.

[0017] In some embodiments of this application, the torque wrench includes a torque handle and a torque head, the sleeve has a groove on the side facing away from the lead screw lock, the torque head is embedded in the groove, and the torque handle is perpendicularly connected to the torque head.

[0018] Secondly, this application also provides a ball screw precision locking nut torque tightening system, including a lead screw, a locking nut, and a ball screw precision locking nut torque tightening tool as described in any embodiment of the first aspect, wherein the ball screw precision locking nut torque tightening tool is connected to the lead screw and the locking nut respectively.

[0019] In some embodiments of this application, the locking nut is sleeved around the ball screw, the outer side of the locking nut has a groove, the outer surface of the groove has a plurality of spaced recesses, and the nut wrench of the ball screw precision locking nut tightening tool is embedded in the groove.

[0020] In some embodiments of this application, the end of the lead screw protrudes beyond the locking nut, and the lead screw is embedded in the through hole of the tensioning sleeve of the ball screw precision locking nut tightening tool.

[0021] Compared with the prior art, the beneficial technical effects of the technical solution provided in this application include:

[0022] This application uses a nut wrench to limit and lock the nut, a screw locking device to limit the screw rod, and a sleeve and torque wrench to drive the screw locking device and screw rod to rotate. The locking nut is limited by the nut wrench, and relative rotation occurs between the screw rod and the locking nut. At this time, the torque set on the torque wrench is the locking torque of the screw locking nut. This allows for precise control of the locking torque of the screw locking nut, ensuring the accuracy of the screw drive. After the screw locking device is locked, the nut wrench can be easily disassembled for convenient adjustment of direction and position. This avoids the use of unreasonable methods such as hammering to tighten the locking nut of a rolling screw, protecting bearings and other precision components such as the screw rod. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in this application, the accompanying drawings used in the embodiments will be briefly described below:

[0024] Figure 1 This is a schematic diagram of the structure of a ball screw precision locking nut torque tightening tool provided in the embodiments of this application;

[0025] Figure 2 This is an exploded view of a ball screw precision locking nut torque tightening tool provided in an embodiment of this application.

[0026] Figure label:

[0027] 1. Nut wrench; 2. Screw locking device; 3. Socket; 4. Torque wrench; 5. Screw; 6. Locking nut;

[0028] Tensioning ring 21, tensioning sleeve 22, locking plate 23, torque head 41, torque handle 42. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0030] Those skilled in the art will understand that, in this specification, the term "comprising" is an open-ended expression, meaning that the stated feature is present but other features are excluded. Directional terms such as "upper," "lower," "left," and "right" refer to exemplary directions based on the accompanying drawings. Features specified as "first" or "second" implicitly include one or more of that feature. Singular expressions can also be used in plural forms. "Multiple" means two or more. The terms "installed," "connected," and "linked" can refer to a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection via an intermediate medium, and it can be a connection within two components. Furthermore, "linked" can include wireless connections.

[0031] The purpose of this application is to overcome the above-mentioned technical deficiencies and propose a ball screw precision locking nut torque tightening tool and system to solve the technical problems of the inability to control the locking torque and the easy damage to the screw 5 and locking nut 6 in the prior art.

[0032] To achieve the above-mentioned technical objectives, this application adopts the following technical solution:

[0033] Firstly, this application provides a torque-controlled tightening tool for a precision locking nut on a ball screw, such as... Figure 1 and Figure 2 As shown, Figure 1 This is a schematic diagram of the structure of a ball screw precision locking nut torque tightening tool provided in the embodiments of this application;

[0034] Figure 2 This is an exploded view of a ball screw precision locking nut torque tightening tool provided in an embodiment of this application.

[0035] A precision locking nut tightening tool for ball screws includes a nut wrench 1, a screw locking device 2, a socket 3, and a torque wrench 4.

[0036] Nut wrench 1;

[0037] The lead screw locking device 2 is located on one side of the nut wrench 1. The lead screw locking device 2 has a through hole on the side facing the nut wrench 1 and a hexagonal hole on the side away from the nut wrench 1.

[0038] Sleeve 3, the top of which is hexagonal and embedded in the hexagonal hole of the lead screw lock 2;

[0039] Torque wrench 4, which is connected to the bottom of socket 3.

[0040] This application uses a nut wrench 1 to limit and lock the nut 6, a screw locking device 2 to limit the lead screw 5, and a sleeve 3 and a torque wrench 4 to drive the screw locking device and the lead screw to rotate. The locking nut 6 is limited by the nut wrench 1, and a relative rotation occurs between the lead screw 5 and the locking nut 6. At this time, the torque set by the torque wrench 4 is the locking torque of the screw locking nut 6. The locking torque of the screw locking nut 6 can be accurately controlled to ensure the accuracy of the lead screw transmission. After the screw locking device is locked, the nut wrench 1 can be flexibly disassembled for easy adjustment of direction and position. It can avoid using unreasonable methods such as hammering to tighten the locking nut 6 of the rolling lead screw, protecting the bearings and precision components such as the lead screw.

[0041] First, insert the nut wrench 1 into the slot of the lead screw locking nut 6. This will ensure that the nut will not change position during the following operations.

[0042] Next, the locking plate 23 of the lead screw locker is fixed to the end face of the tensioning sleeve 22 and cooperates with the tensioning ring 21 to lock the end of the lead screw. This prevents the lead screw from rotating relative to the tensioning sleeve 22 during the tightening process.

[0043] Then, insert the sleeve 3 into the hexagonal hole of the locking plate 23 of the screw locker, and connect the sleeve 3 to the torque wrench 4.

[0044] Finally, use torque wrench 4 to turn socket 3, which will cause the screw locker and the screw to rotate together, thereby tightening the screw lock nut 6.

[0045] The torque wrench 4 allows for precise control of the torque applied to the lead screw locking nut 6, ensuring that the locking torque of the lead screw reaches the predetermined precise value and guaranteeing the accuracy and stability of the lead screw transmission. This avoids unreasonable methods such as hammering that could damage the bearings and lead screw, protecting these precision components from damage. The use of the nut wrench 1 and the lead screw locker simplifies the operation process, making adjusting and locking the lead screw more convenient and faster. After the lead screw locker is tightened, the nut wrench 1 can be flexibly disassembled, facilitating adjustment of direction and position, improving the tool's versatility and flexibility. Applying torque mechanically reduces the uncertainty of manual operation and improves operational safety.

[0046] In some embodiments of this application, the top of the nut wrench 1 has an opening, and the inner surface of the opening has a plurality of spaced protrusions.

[0047] The top of the nut wrench 1 is designed with an opening, the inner surface of which has multiple spaced protrusions. These protrusions correspond to the recesses in the grooves on the outside of the locking nut 6.

[0048] When the nut wrench 1 is placed on the locking nut 6, the protruding part of the opening engages with the recessed part in the slot of the locking nut 6, forming a locking mechanism. This design ensures a secure connection between the nut wrench 1 and the locking nut 6.

[0049] Due to the locking between the nut wrench 1 and the locking nut 6, the torque applied to the torque wrench 4 can be effectively transmitted to the locking nut 6 without being lost due to slippage.

[0050] The matching design of the protrusion and recess greatly enhances the stability between the nut wrench 1 and the locking nut 6, reducing potential slippage during tightening. The locking mechanism between the nut wrench 1 and the locking nut 6 simplifies the alignment process, allowing the operator to complete the tightening operation more quickly. Reducing slippage not only improves operational accuracy but also protects precision components such as tools and lead screws, preventing wear or damage caused by slippage. Once the tightening operation is complete, the nut wrench 1 can be easily removed from the locking nut 6 for convenient adjustment of direction and position.

[0051] In some embodiments of this application, the lead screw locking device 2 includes a tension ring 21, a tension sleeve 22 and a locking plate 23 arranged coaxially. The tension ring 21 is sleeved around the tension sleeve 22. The tension sleeve 22 and the locking plate 23 are stacked and distributed. The locking plate 23 is connected to the sleeve 3.

[0052] The screw locking device 2 is composed of a tension ring 21, a tension sleeve 22, and a locking plate 23 arranged coaxially. The tension ring 21 is sleeved around the tension sleeve 22, and the tension sleeve 22 and the locking plate 23 are stacked.

[0053] During operation, the tensioning sleeve 22 is placed at the end of the lead screw 5, and the tensioning ring 21 is located around the tensioning sleeve 22 to fix the position of the tensioning sleeve 22.

[0054] The locking plate 23 is located on the end face of the tensioning sleeve 22 and is connected to the sleeve 3. When the sleeve 3 is inserted into the hexagonal hole of the locking plate 23 and torque is applied by the torque wrench 4, the tensioning sleeve 22 will be tightly attached to the end of the lead screw 5, thereby locking the lead screw 5.

[0055] The torque applied to the torque wrench 4 is transmitted to the locking plate 23 through the sleeve 3, and then to the tensioning sleeve 22 and the tensioning ring 21, ultimately achieving the tightening of the lead screw 5.

[0056] The combined function of the tensioning ring 21 and the tensioning sleeve 22 effectively prevents the lead screw 5 from moving in both the axial and rotational directions, ensuring locking stability. The layered design makes the installation and removal of the tensioning sleeve 22 and the locking plate 23 more convenient, simplifying the operation. Since the sleeve 3 can mate with various hexagonal hole-shaped locking plates 23, this design has high versatility and is suitable for lead screws 5 of different specifications.

[0057] In some embodiments of this application, the tensioning sleeve 22 includes an inner ring and an outer ring arranged coaxially. The diameter of the outer ring is larger than that of the inner ring. The outer surface of the inner ring is provided with an external thread structure. The outer ring is provided with a plurality of circumferentially distributed connecting bolts on the side surface facing the locking plate 23. The center of the tensioning sleeve 22 has a through hole that extends axially and penetrates the inner ring and the outer ring.

[0058] During operation, the inner and outer rings of the tensioning sleeve 22 are fixed in the appropriate positions on the lead screw 5. The external thread structure of the inner ring mates with the threads of the lead screw 5 or other components, while the outer ring is connected to the locking plate 23 by connecting bolts, and the outer ring abuts against the tensioning ring 21.

[0059] The center of the tensioning sleeve 22 has a through hole that extends axially and passes through the inner and outer rings, allowing the lead screw 5 to pass through.

[0060] When the torque wrench 4 applies torque to the locking plate 23 through the sleeve 3, the connecting bolt transmits the torque to the outer ring, and then to the inner ring through the outer ring.

[0061] The multiple connecting bolts on the outer ring can evenly distribute the applied torque, reducing local pressure on the lead screw 5, protecting its accuracy and extending its service life. The installation and removal of the tensioning sleeve 22 are also simplified through threaded connections and bolt fixing.

[0062] In some embodiments of this application, the tensioning ring 21 has a through hole at its center, and the inner surface of the through hole is provided with an internal thread structure. The internal thread structure of the tensioning ring 21 is connected to the external thread structure of the tensioning sleeve 22.

[0063] The tensioning ring 21 has a through hole at its center, and the inner surface of the through hole has an internal thread structure.

[0064] The internal thread structure of the tension ring 21 matches the external thread structure of the inner ring of the tension sleeve 22. During operation, the tension ring 21 engages with the external thread of the tension sleeve 22 through its internal thread, thereby fixing the tension ring 21 to the periphery of the tension sleeve 22.

[0065] After the tensioning ring 21 is connected to the tensioning sleeve 22, the entire screw locking device 2 is placed in the appropriate position on the screw 5. The screw 5 is locked by applying torque to the locking plate 23 through the torque wrench 4 and the sleeve 3.

[0066] The internal thread structure of the tensioning ring 21 connects with the external thread structure of the tensioning sleeve 22, which can further enhance the locking force on the lead screw 5 and prevent the lead screw 5 from loosening during operation. The tensioning ring 21 helps to evenly distribute the pressure applied to the lead screw 5, reduce local stress concentration, and protect the lead screw 5 from damage.

[0067] Since the tension ring 21 can rotate, the tension can be adjusted as needed, making the locking process more flexible.

[0068] In some embodiments of this application, the locking plate 23 has a through hexagonal hole at its center, and the locking plate 23 has a plurality of bolt holes distributed circumferentially around its periphery. The bolt holes of the locking plate 23 are connected one-to-one with the connecting bolts of the tensioning sleeve 22.

[0069] The locking plate 23 has a through hexagonal hole at its center for engaging with the sleeve 3. The locking plate 23 has multiple bolt holes distributed circumferentially around its periphery.

[0070] During assembly, the bolt holes of the locking plate 23 correspond one-to-one with the connecting bolts on the outer ring of the tensioning sleeve 22. By passing the bolts through the bolt holes of the locking plate 23 and tightening them onto the outer ring of the tensioning sleeve 22, the locking plate 23 is fixed in the appropriate position on the tensioning sleeve 22.

[0071] When the torque wrench 4 is used to turn the socket 3, the torque is transmitted through the socket 3 to the locking plate 23, and then through the bolt holes and connecting bolts of the locking plate 23 to the outer ring of the tensioning sleeve 22, thereby causing the inner ring of the tensioning sleeve 22 to apply a locking force to the lead screw 5.

[0072] By adjusting the torque wrench 4, the torque applied to the lead screw 5 can be precisely controlled to achieve precise locking. When it is necessary to release the lead screw 5, simply rotate the torque wrench 4 in the opposite direction and then loosen the connecting bolt to remove the locking plate 23 and the tensioning sleeve 22.

[0073] The hexagonal hole design allows for precise torque control using a torque wrench 4, ensuring that the locking force of the lead screw 5 reaches the predetermined standard. The circumferentially distributed bolt holes of the locking plate 23 correspond to the connecting bolts of the tensioning sleeve 22, helping to evenly distribute the locking force and reducing the risk of damage to the lead screw 5 due to excessive local pressure. The connection method between the locking plate 23 and the tensioning sleeve 22 improves the structural stability of the entire locking system, making the locking process more reliable.

[0074] In some embodiments of this application, the torque wrench 4 includes a torque handle 42 and a torque head 41. The sleeve 3 has a groove on the side facing away from the lead screw locker 2. The torque head 41 is embedded in the groove. The torque handle 42 is perpendicularly connected to the torque head 41.

[0075] The torque wrench 4 consists of a torque handle 42 and a torque head 41. The torque handle 42 is used by the operator to hold and apply force, while the torque head 41 is connected to the socket 3 to transmit torque.

[0076] The socket 3 has a groove on one side, which is designed to match the torque head 41 of the torque wrench 4.

[0077] During operation, the shape of the torque head 41 matches the groove of the sleeve 3, allowing the torque head 41 to be embedded in the groove. The torque handle 42 is vertically connected to the torque head 41, so that the operator can apply torque by rotating the torque handle 42.

[0078] When the operator rotates the torque handle 42, the torque is transmitted to the sleeve 3 through the torque head 41, and then to the locking plate 23 and the tensioning sleeve 22, ultimately locking the lead screw 5.

[0079] The torque wrench 4 precisely controls the torque applied to the lead screw 5, preventing it from being too tight or too loose, thus ensuring the accuracy of the lead screw 5's transmission. The vertical connection between the torque handle 42 and the torque head 41 is ergonomically designed, making operation more convenient and comfortable. The torque wrench 4 is equipped with a torque scale or digital display screen, allowing for intuitive reading of the applied torque value. The recessed design of the torque head 41 allows the socket 3 to quickly change to different torque heads 41 to adapt to various work requirements.

[0080] Secondly, this application also provides a ball screw precision locking nut torque tightening system, including a lead screw 5, a locking nut 6, and a ball screw precision locking nut torque tightening tool as described in any embodiment of the first aspect, wherein the ball screw precision locking nut torque tightening tool is connected to the lead screw 5 and the locking nut 6 respectively.

[0081] This system achieves precise locking of the lead screw by connecting the tool to the lead screw 5 and the locking nut 6.

[0082] The nut wrench 1 part of the ball screw precision locking nut tightening tool is connected to the slot of the locking nut 6, while the tension ring 21, tension sleeve 22 and locking plate 23 of the screw locking device 2 are connected to the end of the screw 5.

[0083] The system can precisely control the torque applied to the locking nut 6, ensuring that the locking force of the lead screw 5 reaches the predetermined precise value, thereby guaranteeing the accuracy of the lead screw drive. By applying the locking force evenly, damage to the lead screw 5 is reduced, extending its service life.

[0084] In some embodiments of this application, the locking nut 6 is sleeved around the ball screw 5, the outer side of the locking nut 6 has a groove, the outer surface of the groove has a plurality of recesses spaced apart, and the nut wrench 1 of the ball screw precision locking nut tightening tool is embedded in the groove.

[0085] The locking nut 6 is designed to be sleeved around the lead screw 5 to fix the lead screw 5 and prevent it from moving axially or rotating during operation.

[0086] The locking nut 6 has a groove on its outer side, and the outer surface of the groove has multiple spaced recesses. These recesses provide a mechanical interlocking action with the nut wrench 1.

[0087] The nut wrench 1 of the ball screw precision locking nut torque tightening tool is designed to fit into the groove of the locking nut 6. When the nut wrench 1 is inserted into the groove, a tight fit is formed between the recess and the wrench, ensuring that the wrench will not slip during operation.

[0088] In some embodiments of this application, the end of the lead screw 5 protrudes beyond the locking nut 6, and the lead screw 5 is embedded in the through hole of the tension sleeve 22 of the ball screw precision locking nut torque tightening tool.

[0089] In the ball screw precision locking nut torque tightening system, the end of the screw 5 is designed to protrude from the locking nut 6, so that the end of the screw 5 can directly contact the tensioning sleeve 22.

[0090] The tensioning sleeve 22 is designed with a through hole whose size matches the size of the end of the lead screw 5, so that the lead screw 5 can be inserted into the through hole of the tensioning sleeve 22.

[0091] Insert the end of the lead screw 5 into the through hole of the tensioning sleeve 22 to ensure that the position of the lead screw 5 is fixed.

[0092] By rotating the tensioning sleeve 22 or using a torque wrench 4, a torque is applied to the tensioning sleeve 22, thereby making the tensioning sleeve 22 fit tightly against the end of the lead screw 5, thus locking the locking nut 6.

[0093] The tensioning sleeve 22 is directly embedded at the end of the lead screw 5, reducing intermediate steps and making the locking process more direct and effective. Applying locking force directly to the end of the lead screw 5 avoids damage caused by uneven locking force. It also avoids traditional methods such as hammering that could cause injury, improving operational safety.

[0094] Compared with the prior art, the beneficial technical effects of the technical solution provided in this application include:

[0095] This application uses a nut wrench 1 to limit and lock the nut 6, a screw locking device 2 to limit the lead screw 5, and a sleeve 3 and a torque wrench 4 to drive the screw locking device and the lead screw to rotate. The locking nut 6 is limited by the nut wrench 1, and a relative rotation occurs between the lead screw 5 and the locking nut 6. At this time, the torque set by the torque wrench 4 is the locking torque of the screw locking nut 6. The locking torque of the screw locking nut 6 can be accurately controlled to ensure the accuracy of the lead screw transmission. After the screw locking device is locked, the nut wrench 1 can be flexibly disassembled for easy adjustment of direction and position. It can avoid using unreasonable methods such as hammering to tighten the locking nut 6 of the rolling lead screw, protecting the bearings and precision components such as the lead screw.

[0096] Those skilled in the art will understand that the steps, measures, and schemes in the various operations, methods, processes, and procedures discussed in this application can be alternated, modified, rearranged, decomposed, combined, or deleted.

[0097] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Any other corresponding changes and modifications made based on the technical concept of this application should be included within the scope of protection of the claims of this application.

Claims

1. A precision locking nut tightening tool for ball screws, characterized in that, include: Nut wrench; A lead screw locking device is located on one side of the nut wrench. The lead screw locking device has a through hole on the side facing the nut wrench and a hexagonal hole on the side facing away from the nut wrench. A sleeve, the top of which is hexagonal and embedded in the hexagonal hole of the lead screw lock; A torque wrench, wherein the torque wrench is connected to the bottom of the socket.

2. The ball screw precision locking nut torque tightening tool according to claim 1, characterized in that, The nut wrench has an opening at the top, and the inner surface of the opening has a plurality of spaced protrusions.

3. The ball screw precision locking nut torque tightening tool according to claim 1, characterized in that, The lead screw locking device includes a tension ring, a tension sleeve, and a locking plate arranged coaxially. The tension ring is sleeved around the tension sleeve. The tension sleeve and the locking plate are stacked on top of each other. The locking plate is connected to the sleeve.

4. The ball screw precision locking nut torque tightening tool according to claim 3, characterized in that, The tensioning sleeve includes an inner ring and an outer ring arranged coaxially. The diameter of the outer ring is larger than that of the inner ring. The outer surface of the inner ring is provided with an external thread structure. The outer ring has a plurality of circumferentially distributed connecting bolts on the side surface facing the locking plate. The center of the tensioning sleeve has a through hole that extends axially and penetrates the inner ring and the outer ring.

5. A ball screw precision locking nut torque tightening tool according to claim 4, characterized in that, The tensioning ring has a through hole at its center, and the inner surface of the through hole is provided with an internal thread structure. The internal thread structure of the tensioning ring is connected to the external thread structure of the tensioning sleeve.

6. A ball screw precision locking nut torque tightening tool according to claim 4, characterized in that, The locking plate has a through hexagonal hole in the center and multiple bolt holes distributed circumferentially around its periphery. The bolt holes of the locking plate are connected one-to-one with the connecting bolts of the tensioning sleeve.

7. A ball screw precision locking nut torque tightening tool according to claim 1, characterized in that, The torque wrench includes a torque handle and a torque head. The sleeve has a groove on the side facing away from the lead screw lock. The torque head is embedded in the groove. The torque handle is perpendicularly connected to the torque head.

8. A ball screw precision locking nut constant torque tightening system, characterized in that, It includes a lead screw, a locking nut, and a ball screw precision locking nut torque tightening tool as described in any one of claims 1 to 7, wherein the ball screw precision locking nut torque tightening tool is connected to the lead screw and the locking nut respectively.

9. A ball screw precision locking nut torque tightening system according to claim 8, characterized in that, The locking nut is sleeved around the ball screw, and the outer side of the locking nut has a groove. The outer surface of the groove has multiple recesses spaced apart. The nut wrench of the ball screw precision locking nut tightening tool is embedded in the groove.

10. A ball screw precision locking nut torque tightening system according to claim 9, characterized in that, The end of the lead screw protrudes from the locking nut, and the lead screw is embedded in the through hole of the tensioning sleeve of the ball screw precision locking nut tightening tool.

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