Fixed-torque synchronous assembling and tightening device and method for laser gyroscope

Abstract

The invention discloses a fixed-moment synchronous assembling and tightening device and method for a laser gyroscope, and belongs to the technical field of laser gyroscopes. The laser gyroscope fixed-moment synchronous assembling and tightening device comprises a moment-controllable synchronous tightening device, a servo driver electrically connected with the moment-controllable synchronous tightening device and a laser gyroscope tightening control system electrically connected with the servo driver. According to the laser gyroscope fixed-moment synchronous assembling and tightening device, the existing laser gyroscope assembling and tightening process is improved, meanwhile, the production efficiency is greatly improved, the labor intensity of operators is reduced, and the product reliability is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of laser gyroscopes, and in particular to a laser gyroscope constant torque synchronous assembly and tightening device and method. Background Art

[0002] Laser gyroscope has the advantages of small size, high precision and good stability, and is one of the most widely used inertial components. In the process of mass production of laser gyroscopes, when the laser gyroscope is packed, the assembly stress and deformation of the shaking wheel have an important influence on the performance of the laser gyroscope. The current assembly tightening process is to use a torque wrench to tighten symmetrically in sequence and tighten the pre-tightening force with different torque values ​​for multiple times to ensure that the stress and deformation of the shaking wheel of the laser gyroscope after tightening and assembly are minimized. However, this assembly tightening process can no longer meet the increasing requirements of modern inertial navigation technology for the accuracy and performance of laser gyroscopes. More advanced assembly processes must be used to ensure that the stress and deformation of the shaking wheel are minimized. In addition, the manual operation of the tightening process using a torque wrench with different torque values ​​for multiple times is inefficient, and the operator is also prone to mental fatigue, resulting in omissions and errors. For this reason, it is necessary to design a set of laser gyroscope fixed torque synchronous assembly tightening devices or methods based on actual production, which can greatly improve the production efficiency while improving the accuracy and performance of the laser gyroscope. Summary of the invention

[0003] In order to solve the above problems, the purpose of the present invention is to provide a device and method for laser gyroscope constant torque controlled synchronous assembly and tightening, so as to improve the existing laser gyroscope assembly and tightening process, while greatly improving production efficiency, reducing the labor intensity of operators, and improving product reliability.

[0004] In order to achieve the above object, the technical solution of the present invention is as follows:

[0005] A laser gyro constant torque synchronous assembly tightening device comprises a torque controllable synchronous tightening device, a servo driver electrically connected to the torque controllable synchronous tightening device, and a laser gyro tightening control system electrically connected to the servo driver.

[0006] Furthermore, the torque-controllable synchronous tightening device includes a workbench base, a positioning adapter plate arranged in the workbench base, an up and down motion screw assembly and an up and down motion guide column installed on the workbench base, an opening and closing mechanism mounted on the up and down motion guide column, and a four-axis tightening tool assembly connected to the opening and closing mechanism.

[0007] Furthermore, the four-axis tightening tool assembly is composed of four completely identical single-axis tightening tool assemblies, and the single-axis tightening tool assembly includes a tightening servo motor, a transmission assembly and an end assembly. The tightening servo motor drives the end assembly to perform torque-controllable tightening rotational motion, and the transmission assembly transmits the rotational motion of the tightening servo motor to the end assembly.

[0008] Furthermore, the transmission assembly includes a transmission mounting seat, a motor support plate, a pair of meshing gears, a shaft and a bearing; the terminal assembly includes a transmission sleeve, a transfer rod, a spring, a tool sleeve and a wrench; one end of the transmission sleeve is a transmission shaft, which is installed in the bearing seat holes of the transmission mounting seat and the motor support plate, and the other end of the transmission sleeve is installed with a transfer rod, a regular hexagonal hole is designed in the transmission sleeve, one end of the transfer rod is a regular hexagonal rod, the regular hexagonal rod and the regular hexagonal hole achieve a hole-rod clearance fit, and a spring is also installed on the transfer rod.

[0009] Furthermore, the opening and closing mechanism includes an opening and closing servo motor, an opening and closing slide plate, an involute wheel, a slider, an opening and closing motor mounting plate and an opening and closing supporting stud; the opening and closing servo motor is mounted on the opening and closing motor mounting plate, the opening and closing motor mounting plate is fixedly mounted on the opening and closing slide plate via the opening and closing supporting studs, four radial slide rails are evenly distributed on the opening and closing slide plate, the slider is mounted in the slide rail, the upper end of the slider has a cylinder, which is inserted into the involute groove rail of the involute wheel, and the lower end of the slider is fastened to the four-axis tightening tool assembly via bolts.

[0010] Furthermore, the up and down moving screw assembly includes a screw servo motor, a screw, a screw mounting seat, a screw nut, a screw slider assembly, a screw guide rail seat and a screw guide rail; the screw mounting seat and the screw guide rail are both mounted on the screw guide rail seat, the screw is mounted in the screw mounting seat, the output shaft of the screw servo motor is connected to the screw, the screw nut is sleeved on the screw, the screw slider assembly is fastened to the screw nut on the one hand, and is supported on the screw guide rail via a slider on the other hand, and the screw slider assembly is also fastened to the opening and closing mechanism.

[0011] Furthermore, the workbench base is a rectangular plate-shaped part, the up-and-down movement lead screw assembly and the up-and-down movement guide column are both installed on the workbench base, and a rectangular settlement platform is opened on the workbench base.

[0012] Furthermore, the positioning adapter plate is a rectangular plate-shaped part, and three circular grooves are formed on the positioning adapter plate. The positioning adapter plates are all placed in the settling platform of the workbench base.

[0013] A laser gyro constant torque synchronous assembly and tightening method comprises the following steps:

[0014] S1. Turn on the main power supply and servo drive power supply;

[0015] S2. Select the laser gyro model in the host computer software;

[0016] S3. Place the corresponding model of the positioning adapter plate into the sinking platform of the workbench base;

[0017] S4. Place the laser gyro in the installation box, align the threaded holes of the shaking wheel with the threaded holes of the installation box, and insert the screws into the corresponding threaded holes;

[0018] S5. Place the mounting box to be tightened on the positioning adapter plate, and align the mounting boss at the bottom of the mounting box with the positioning hole on the positioning adapter plate;

[0019] S6. Press the "Start Tightening" button and wait for the tightening system to complete tightening. When the sound and light prompt that the tightening is completed, take out the installation box and put in the next installation box to be tightened;

[0020] S7. If the tightening system reports an error, follow the prompts displayed on the host computer, replace the screws, and then restart from step S4.

[0021] Further, the S6 comprises the following steps:

[0022] S61. Read the model parameters and wait for the operator to confirm the model;

[0023] S62. After the model is confirmed, the opening and closing servo motor is driven according to the model parameters to make the opening and closing distance of the wrench consistent with the installation pitch of the corresponding model gyroscope, and then the lead screw servo motor is driven to move the wrench downward to the preset stroke;

[0024] S63, control the torque, and the wrench rotates at the screwing speed. If the electromagnetic torque and stroke match the screwing process, control the torque, and the wrench rotates at the screwing speed. If the electromagnetic torque and stroke do not match the screwing process, and the screwing angle is greater than 360°, an alarm is issued to indicate that a screw screw has a screwing error, and the wrench is lifted.

[0025] S64. If the electromagnetic torque and stroke match the screwing process, continue screwing. If the stroke reaches the fitting surface, control the torque and screw the wrench at the tightening speed. If the stroke does not reach the fitting surface and the electromagnetic torque does not match the screwing process, an alarm will be issued to indicate that a screw is unqualified, and the screw will be screwed in reverse and the wrench will be lifted.

[0026] S65. If the tightening torque reaches the preset value, an audible and visual prompt will be given to indicate that the tightening is complete, and the wrench will be lifted; if the preset value is not reached, the tightening will continue until it is reached.

[0027] By adopting the above technical solution, the present invention has the following advantages:

[0028] The present invention provides a laser gyroscope constant torque controlled synchronous assembly tightening device and method, which improves the existing laser gyroscope assembly tightening process, improves the accuracy and performance of the laser gyroscope, greatly improves production efficiency, reduces the labor intensity of operators, and improves product reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of a laser gyro automatic constant torque synchronous tightening device according to an embodiment of the present invention;

[0030] Figure 2 (a) is a schematic diagram of the structure of a tightening tool assembly of a tightening system provided by an embodiment of the present invention;

[0031] Figure 2 (b) is a structural diagram of the servo motor, transmission assembly, and end assembly of the tightening tool assembly of the present invention;

[0032] Figure 3 A three-view structural diagram of an opening and closing mechanism according to an embodiment of the present invention;

[0033] Figure 4 It is a structural schematic diagram of an opening and closing slide rail plate of an opening and closing mechanism according to an embodiment of the present invention;

[0034] Figure 5 It is a structural schematic diagram of the involute wheel of the opening and closing mechanism of an embodiment of the present invention;

[0035] Figure 6 It is a structural schematic diagram of a slider of an opening and closing mechanism according to an embodiment of the present invention;

[0036] Figure 7 It is a structural schematic diagram of an up-and-down moving lead screw assembly according to an embodiment of the present invention;

[0037] Figure 8 It is a structural schematic diagram of a positioning adapter plate according to an embodiment of the present invention;

[0038] Fig. 9 It is a flow chart of a laser gyro constant torque synchronous assembly and tightening method according to an embodiment of the present invention;

[0039] Fig.10 Flow chart of the tightening control program according to the embodiment of the present invention. DETAILED DESCRIPTION

[0040] The technical solution of the present invention is described in detail below in conjunction with the drawings in the specification. It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0041] In a specific embodiment, a laser gyro constant torque synchronous assembly tightening device is specifically as follows: Figure 1 As shown, the assembly tightening method between the laser gyroscope and the mounting box in the assembly of the laser gyroscope includes a torque-controllable synchronous tightening device 100, a servo driver 200 electrically connected to the torque-controllable synchronous tightening device, and a laser gyroscope tightening control system 300 electrically connected to the servo driver.

[0042] The torque controllable synchronous tightening device 100 comprises a four-axis tightening tool assembly 10, an opening and closing mechanism 20, an up-and-down moving lead screw assembly 30, an up-and-down moving guide column 40, a workbench base 50, and a positioning adapter plate 60;

[0043] The four-axis synchronous tightening tool assembly 10 is composed of four identical single-axis tightening tool assemblies, and is used to perform torque-controlled synchronous tightening of four screws of the laser gyro shaker. Since the four-axis tightening tool assemblies 10 are identical to each other, only the single-axis tightening tool assembly is described below.

[0044] The uniaxial tightening tool assembly includes a tightening servo motor 1030, a transmission assembly 1020, and an end assembly 1010. Figure 2(a). The tightening servo motor 1030 is used to drive the end component 1010 to perform torque-controlled tightening rotational motion; the transmission component 1020 includes a transmission mounting seat 1021, a motor support plate 1022, a large gear 1025 and a small gear 1026, a bearing 1023, a positioning sleeve 1024, and an elastic retaining ring 1028. The main function is to transmit the rotational motion of the tightening servo motor 1030 to the end component 1010. The purpose of setting the transmission component 1020 is to design the end component 1010 at the front end of the tightening tool component 10. The four-axis tightening tool component 10 can be brought closer when tightening synchronously, so that it is suitable for tightening laser gyro shakers of smaller models, expanding the scope of application of the tightening system to various models. The end component 1010 includes a transmission sleeve 1007, a transfer rod 1004, a spring 1006, a tool sleeve 1002, and a wrench 1001. One end of the transmission sleeve 1007 is a transmission shaft, which is installed in the bearing seat holes of the transmission mounting seat 1021 and the motor support plate 1022. The other end of the transmission sleeve 1007 is a transmission sleeve, in which a transfer rod 1004 is installed. A regular hexagonal hole is designed in the transmission sleeve 1007. One end of the transfer rod 1004 is a regular hexagonal rod, which realizes a hole-rod clearance fit with the regular hexagonal hole of the transmission sleeve 1007. The transfer rod 1004 can not only transmit the tightening rotational motion through the hole-rod fit, but also move up and down in the transmission sleeve 1007 through the hole-rod fit. A spring 1006 is also installed on the transfer rod 1004 to realize flexible contact between the wrench 1001 and the product to be tightened. Specifically, Figure 2 (b) as shown.

[0045] The opening and closing mechanism 20 is as follows Figure 3 , Figure 4 , Figure 5 , Figure 6As shown, it includes an opening and closing servo motor 2001, an opening and closing slide plate 2010, an involute wheel 2020, a slider 2030, an opening and closing motor mounting plate 2040, and an opening and closing support stud 2004. The opening and closing servo motor 2001 is mounted on the opening and closing motor mounting plate 2040, and the opening and closing motor mounting plate 2040 fixes the opening and closing support stud 2004 on the opening and closing slide plate 2010. Four radial slide rails 2011 are evenly distributed on the opening and closing slide plate 2010, and the slider 2030 is installed in the slide rail 2011. The upper end of the slider 2030 has a cylinder, which is inserted into the involute groove 2021 of the involute wheel 2020, and the lower end of the slider 2030 is fastened to the tightening tool assembly 10 through bolts. When the opening and closing servo motor 2001 drives the involute wheel 2010 to rotate, the involute groove rail 2021 drives the upper cylinder of the slider 2030 to make the slider 2030 slide along the slide rail 2011, and the slider 2030 drives the tightening tool assembly 10 to move, thereby realizing the opening and closing movement of the four-axis tightening tool assembly 10, so as to achieve the purpose of adapting to the pitch of the laser gyroscope wheel shaker of different models.

[0046] The up and down movement screw assembly 30 is specifically as follows Figure 7 As shown, it includes a screw servo motor 3009, a screw 3007, a screw mounting seat 3004, a screw nut 3005, a screw slider assembly 3003, a screw guide rail seat 3001, and a screw guide rail 3002. The screw mounting seat 3004 and the screw guide rail 3002 are both mounted on the screw guide rail seat 3001, the screw 3007 is mounted in the screw mounting seat 3004, the output shaft of the screw servo motor 3009 is connected to the screw 3007, the screw nut 3005 is sleeved on the screw 3007, the screw slider assembly 3003 is fastened to the screw nut 3005 on one hand, and is supported on the screw guide rail 3002 via a slider on the other hand, and the screw slider assembly 3003 is also fastened to the opening and closing mechanism 20. The lead screw servo motor 3009 drives the lead screw 3007 to rotate, and the lead screw 3007 rotates to drive the lead screw nut 3005 to move up and down, thereby driving the lead screw slider assembly 3003, the opening and closing mechanism 20 and the tightening tool assembly 10 to move up and down.

[0047] The up and down motion guide post 40 is as follows Figure 1 As shown, it includes two left and right guide column parts, and the opening and closing mechanism 20 is sleeved on the up and down movement guide column 40. The up and down movement guide column 40 guides and supports the opening and closing mechanism 20 for up and down movement.

[0048] The workbench base 50 is a rectangular plate-shaped part. Figure 1 As shown, the up-and-down moving lead screw assembly 30 and the up-and-down moving guide column 40 are both installed on the workbench base 50 , and a rectangular settling platform is provided on the workbench base 50 .

[0049] The positioning adapter plate 60 is also a rectangular plate-shaped part. Figure 8 As shown, its outer dimensions are the same as the dimensions of the rectangular settling platform on the workbench base 50. The positioning adapter plate 60 is provided with three circular grooves 6001, and the size and spacing of the circular grooves 6001 are consistent with the size and spacing of the circular mounting bosses of a certain type of laser gyroscope mounting box, that is, each type of laser gyroscope corresponds to one positioning adapter plate 60, but the outer dimensions of all positioning adapter plates 60 are the same as the dimensions of the settling platform of the workbench base 50, and can be placed in the settling platform of the workbench base 50. The function of the positioning adapter plate 60 is to facilitate the fixation and precise positioning of various types of laser gyroscopes on the tightening workbench, so that the end of the tightening tool assembly 10, that is, the wrench 1001, can accurately approach the threaded hole position of the laser gyroscope during the downward movement.

[0050] The present invention also provides a laser gyro constant torque synchronous assembly tightening method, comprising the following steps: Fig. 9 As shown:

[0051] S1. Turn on the main power supply and servo drive power supply;

[0052] S2. Select the laser gyro model in the host computer software;

[0053] S3. Place the corresponding model of the positioning adapter plate into the sinking platform of the workbench base;

[0054] S4. Place the laser gyro in the installation box, align the threaded holes of the shaking wheel with the threaded holes of the installation box, and insert the screws into the corresponding threaded holes;

[0055] S5. Place the mounting box to be tightened on the positioning adapter plate, and align the mounting boss at the bottom of the mounting box with the positioning hole on the positioning adapter plate;

[0056] S6. Press the "Start Tightening" button and wait for the tightening system to complete tightening. When the sound and light prompt that the tightening is completed, take out the installation box and put in the next installation box to be tightened;

[0057] S7. If the tightening system reports an error, follow the prompts displayed on the host computer, replace the screws, and then restart from step S4.

[0058] Among them, S6 includes the following specific steps: Fig.10 As shown:

[0059] S61. Read the model parameters and wait for the operator to confirm the model;

[0060] S62. After the model is confirmed, the opening and closing servo motor is driven according to the model parameters to make the opening and closing distance of the wrench consistent with the installation pitch of the corresponding model gyroscope, and then the lead screw servo motor is driven to move the wrench downward to the preset stroke;

[0061] S63, control the torque, and the wrench rotates at the screwing speed. If the electromagnetic torque and stroke match the screwing process, control the torque, and the wrench rotates at the screwing speed. If the electromagnetic torque and stroke do not match the screwing process, and the screwing angle is greater than 360°, an alarm is issued to indicate that a screw screw has a screwing error, and the wrench is lifted.

[0062] S64. If the electromagnetic torque and stroke match the screwing process, continue screwing. If the stroke reaches the fitting surface, control the torque and screw the wrench at the tightening speed. If the stroke does not reach the fitting surface and the electromagnetic torque does not match the screwing process, an alarm will be issued to indicate that a screw is unqualified, and the screw will be screwed in reverse and the wrench will be lifted.

[0063] S65. If the tightening torque reaches the preset value, an audible and visual prompt will be given to indicate that the tightening is complete, and the wrench will be lifted; if the preset value is not reached, the tightening will continue until it is reached.

[0064] Finally, it should be pointed out that although the present invention has been described with reference to the current specific embodiments, ordinary technicians in this technical field should realize that the above embodiments are only used to illustrate the present invention and are not used as a limitation of the present invention. Various equivalent changes or substitutions can be made without departing from the concept of the present invention. Therefore, as long as the changes and modifications to the above embodiments are within the essential spirit of the present invention, they will fall within the scope of the claims of the present invention.

Claims

1. A laser gyro constant torque synchronous assembly and tightening device, characterized in that: The invention comprises a torque-controllable synchronous tightening device, a servo driver electrically connected to the torque-controllable synchronous tightening device, and a laser gyro tightening control system electrically connected to the servo driver.

2. A laser gyro constant torque synchronous assembly and tightening device according to claim 1, characterized in that: The torque-controllable synchronous tightening device includes a workbench base, a positioning adapter plate arranged in the workbench base, an up and down motion screw assembly and an up and down motion guide column installed on the workbench base, an opening and closing mechanism mounted on the up and down motion guide column, and a four-axis tightening tool assembly connected to the opening and closing mechanism.

3. The laser gyro constant torque synchronous assembly and tightening device according to claim 2, characterized in that: The four-axis tightening tool assembly is composed of four completely identical single-axis tightening tool assemblies, and the single-axis tightening tool assembly includes a tightening servo motor, a transmission assembly and an end assembly. The tightening servo motor drives the end assembly to perform torque-controllable tightening rotational motion, and the transmission assembly transmits the rotational motion of the tightening servo motor to the end assembly.

4. The laser gyro constant torque synchronous assembly and tightening device according to claim 3, characterized in that: The transmission assembly includes a transmission mounting seat, a motor support plate, a pair of meshing gears, a shaft and a bearing; the terminal assembly includes a transmission sleeve, a transfer rod, a spring, a tool sleeve and a wrench; one end of the transmission sleeve is a transmission shaft, which is installed in the bearing seat holes of the transmission mounting seat and the motor support plate, and the other end of the transmission sleeve is installed with a transfer rod, a regular hexagonal hole is designed in the transmission sleeve, one end of the transfer rod is a regular hexagonal rod, and the regular hexagonal rod and the regular hexagonal hole achieve a hole-rod clearance fit, and a spring is also installed on the transfer rod.

5. The laser gyro constant torque synchronous assembly and tightening device according to claim 2, characterized in that: The opening and closing mechanism includes an opening and closing servo motor, an opening and closing slide plate, an involute wheel, a slider, an opening and closing motor mounting plate and an opening and closing supporting stud; the opening and closing servo motor is mounted on the opening and closing motor mounting plate, the opening and closing motor mounting plate is fixedly mounted on the opening and closing slide plate via the opening and closing supporting stud, four radial slide rails are evenly distributed on the opening and closing slide plate, the slider is mounted in the slide rail, the upper end of the slider has a cylinder, which is inserted into the involute groove rail of the involute wheel, and the lower end of the slider is fastened to the four-axis tightening tool assembly via bolts.

6. The laser gyro constant torque synchronous assembly and tightening device according to claim 2, characterized in that: The up and down moving screw assembly includes a screw servo motor, a screw, a screw mounting seat, a screw nut, a screw slider assembly, a screw guide rail seat and a screw guide rail; the screw mounting seat and the screw guide rail are both mounted on the screw guide rail seat, the screw is mounted in the screw mounting seat, the output shaft of the screw servo motor is connected to the screw, the screw nut is sleeved on the screw, the screw slider assembly is fastened to the screw nut on the one hand, and is supported on the screw guide rail via a slider on the other hand, and the screw slider assembly is also fastened to the opening and closing mechanism.

7. The laser gyro constant torque synchronous assembly and tightening device according to claim 2, characterized in that: The workbench base is a rectangular plate-shaped part, the up-and-down movement lead screw assembly and the up-and-down movement guide column are both installed on the workbench base, and a rectangular settling platform is provided on the workbench base.

8. The laser gyro constant torque synchronous assembly and tightening device according to claim 7, characterized in that: The positioning adapter plate is a rectangular plate-shaped part, and three circular grooves are formed on the positioning adapter plate. The positioning adapter plates are all placed in the settling platform of the workbench base.

9. A laser gyro constant torque synchronous assembly and tightening method, characterized in that: The following steps are involved: S1. Turn on the main power supply and servo drive power supply; S2. Select the laser gyro model in the host computer software; S3. Place the corresponding model of the positioning adapter plate into the sinking platform of the workbench base; S4. Place the laser gyro in the installation box, align the threaded holes of the shaking wheel with the threaded holes of the installation box, and insert the screws into the corresponding threaded holes; S5. Place the mounting box to be tightened on the positioning adapter plate, and align the mounting boss at the bottom of the mounting box with the positioning hole on the positioning adapter plate; S6. Press the "Start Tightening" button and wait for the tightening system to complete tightening. When the sound and light prompt that the tightening is completed, take out the installation box and put in the next installation box to be tightened; S7. If the tightening system reports an error, follow the prompt information displayed on the host computer, replace the screws, and then start again from step S4.

10. A laser gyro constant torque synchronous assembly and tightening method according to claim 9, characterized in that: The S6 comprises the following steps: S61. Read the model parameters and wait for the operator to confirm the model; S62. After the model is confirmed, the opening and closing servo motor is driven according to the model parameters to make the opening and closing distance of the wrench consistent with the installation pitch of the corresponding model gyroscope, and then the lead screw servo motor is driven to move the wrench downward to the preset stroke; S63. Control the torque, and the wrench rotates at the screwing speed. If the electromagnetic torque and stroke match the screwing process, control the torque, and the wrench rotates at the screwing speed. If the electromagnetic torque and stroke do not match the screwing process, and the screwing angle is greater than 360°, an alarm is issued to indicate that a screw screw has been screwed incorrectly, and the wrench is lifted. S64. If the electromagnetic torque and stroke match the screwing process, continue screwing. If the stroke reaches the fitting surface, control the torque and screw the wrench at the tightening speed. If the stroke does not reach the fitting surface and the electromagnetic torque does not match the screwing process, an alarm will be issued to indicate that a screw is unqualified, and the screw will be screwed in reverse and the wrench will be lifted. S65. If the tightening torque reaches the preset value, an audible and visual prompt will be given to indicate that the tightening is complete, and the wrench will be lifted; if the preset value is not reached, the tightening will continue until it is reached.

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