A digital intelligent control system for a servo electric wrench

Abstract

The application discloses a kind of servo electric wrench digital intelligent control system, including controller and servo motor electric wrench;Controller is connected between communication with servo motor electric wrench.Connection module of power supply, system menu selection module, identity verification module, bluetooth smart sleeve setting module, data recording module, torque angle setting module and state real-time display module are included in controller.Identity verification module is used to identify and verify the identity information of current operator.Blue tooth smart sleeve setting module is used to connect the smart sleeve with bluetooth function.Torque angle setting module is used to set the set torque value and set angle value to be input.System menu selection module includes system parameter modification, correction setting and system information;By setting different modules, the setting, recording, analysis of torque can be realized, and the identity can be verified to realize different permissions to manage electric wrench.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of servo electric wrench digital intelligent control system, belong to electric wrench intelligent control technical field. BACKGROUND

[0002] Wrench is a commonly used installation and disassembly tool, which is a hand tool for turning bolts, screws, nuts and other threaded fastening bolts or nut openings or sleeve holes by using the principle of lever. In the mechanical equipment assembly process, the linking and fastening of parts are the most basic and critical processes. With the improvement of quality requirements, more effective means, equipment and systems are needed to fully ensure product quality and provide system-level error-proofing measures, such as ensuring tightening torque, number of times, automatically processing unqualified products for previous processes, etc. The data of the product during processing will be automatically recorded throughout the process. The information provided by this database is of great significance to process, quality assurance, production, equipment maintenance and enterprise management. From the torque wrench to the digital wrench, the linking and fastening process gradually evolved from manual to tool-level quality assurance. However, the quality is determined by the operator, and the speed, force, and even the mood of the tightening action will directly affect the final tightening torque.

[0003] How to realize the record, analysis and management of electric wrench with specific permissions become the problems to be solved. SUMMARY

[0004] The purpose of the present application is to provide a kind of servo electric wrench digital intelligent control system, by setting different modules to realize the setting, record, analysis of torque, and can realize different permissions to manage electric wrench by verifying identity.

[0005] To solve the above technical problems, the purpose of the present application is realized as follows:

[0006] The servo electric wrench digital intelligent control system of the present application comprises a controller and a servo motor electric wrench.

[0007] The controller comprises a power connection module, a system menu selection module, an identity verification module, a Bluetooth smart sleeve setting module, a data recording module, a torque angle setting module and a state real-time display module.

[0008] The identity verification module is used to identify and verify the identity information of the current operator, and open part or all of the system functions corresponding to the identity level of the operator.

[0009] The state real-time display module is used to display the real-time speed, temperature and other information of the motor.

[0010] The Bluetooth smart sleeve setting module is used for connecting a smart sleeve with Bluetooth function;

[0011] The torque angle setting module is used for setting a set torque value and a set angle value to be inputted;

[0012] The system menu selection module comprises system parameter modification, correction setting and system information; the system parameter modification comprises preset value setting, password modification and torque limitation; the correction setting comprises point correction, Bluetooth correction, tool correction and scale adjustment; the system information comprises tool information, alarm information, point correction information and Flash clearing.

[0013] In the above scheme, and as a preferred embodiment of the above scheme: the servo motor electric wrench comprises a power module and a reduction box;

[0014] The power module comprises a power module shell and a servo motor fixedly arranged in the power module shell; one side of the power module shell is fixedly provided with a handle, and the handle is provided with a power switch and a reversing switch;

[0015] The reduction box comprises a reduction box shell, a connecting ring, an inner tooth ring, a rotating block, a connecting assembly, an input end assembly, a primary gear assembly, a secondary gear assembly, a tertiary gear assembly and a quaternary gear assembly;

[0016] The connecting assembly comprises a connecting flange and a shaft coupling; the connecting flange is used for connecting the reduction box and the power module; the shaft coupling is used for connecting an output shaft of the servo motor and the input end assembly; the connecting flange is connected with the rotating block through screws; the connecting ring is uniformly provided with recessed portions on the surface;

[0017] The connecting ring is provided with a first through hole; the first through hole is provided with a spring and a steel ball inside, and part of the steel ball is located in the recessed portion; the connecting ring and the inner tooth ring are fixedly connected through screws;

[0018] The input end assembly comprises a primary sun gear provided with a bearing on the outside; one end of the primary sun gear is a gear, and the other end is connected with the shaft coupling;

[0019] The primary gear assembly comprises a secondary sun gear and a plurality of primary planetary gears; one end of the secondary sun gear is provided with a gear, and the other end is connected with the primary planetary gears through a positioning pin; the primary planetary gears are engaged with the inner tooth ring and the primary sun gear;

[0020] The secondary gear assembly comprises a tertiary sun gear and a set number of secondary planetary gears; one end of the tertiary sun gear is provided with a gear, and the other end is connected with the secondary planetary gears through a positioning pin; the secondary planetary gears are in engagement with an inner ring, a secondary sun gear;

[0021] The tertiary gear assembly comprises a quaternary sun gear and a set number of tertiary planetary gears; one end of the quaternary sun gear is provided with a gear, and the other end is connected with the tertiary planetary gears through a positioning pin; the tertiary planetary gears are in engagement with an inner ring arranged on the inner wall of the reduction box shell and a tertiary sun gear;

[0022] The quaternary gear assembly comprises a driving shaft and a quaternary planetary gear; one end of the driving shaft is connected with the quaternary planetary gear through a positioning pin; the quaternary planetary gear is in engagement with an inner ring arranged on the inner wall of the reduction box shell and a quaternary sun gear;

[0023] The first sun gear is provided with a central shaft at the central position of one end; the other end of the central shaft is in contact with the central position of the end of the driving shaft through the centers of the secondary sun gear, the tertiary sun gear and the quaternary sun gear.

[0024] As a preferred embodiment of the above-mentioned scheme and on the basis of the above-mentioned scheme: the reduction box shell is provided with a counterforce arm outside the end close to the driving shaft.

[0025] As a preferred embodiment of the above-mentioned scheme and on the basis of the above-mentioned scheme: the end of the reduction box shell is provided outside the driving shaft, and a steel-based self-lubricating bearing is arranged between the two.

[0026] As a preferred embodiment of the above-mentioned scheme and on the basis of the above-mentioned scheme: the first planetary gear, the secondary planetary gear, the tertiary planetary gear and the quaternary planetary gear are provided with needle bearings between the corresponding positioning pins.

[0027] As a preferred embodiment of the above-mentioned scheme and on the basis of the above-mentioned scheme: the bearing provided outside the first sun gear is a deep groove ball bearing.

[0028] As a preferred embodiment of the above-mentioned scheme and on the basis of the above-mentioned scheme: a clamping ring is arranged between the connecting ring and the inner ring.

[0029] As a preferred embodiment of the above-mentioned scheme and on the basis of the above-mentioned scheme: a first retainer and an upper sleeve ring are arranged between the reduction box shell and the quaternary sun gear.

[0030] As a preferred embodiment of the above-mentioned scheme and on the basis of the above-mentioned scheme: a second retainer and a lower sleeve ring are arranged between the reduction box shell and the driving shaft.

[0031] On the basis of the above scheme and as a preferred scheme of the above scheme: one end of the power module shell is fixedly provided with a front cover, the other end is fixedly provided with a rear cover, and the rear cover is provided with a heat dissipation hole; the front cover and the connecting flange are fixedly connected through screws; the power module shell is provided with a fan at one end close to the rear cover; and the end of the handle is connected with a connector seat through a pressing plate.

[0032] On the basis of the above scheme and as a preferred scheme of the above scheme: the power module shell is provided with an LED surface.

[0033] The control system has the advantages that the electric wrench intelligent control system can set, record and analyze the torque by setting different modules, and can verify the identity to realize the management of the electric wrench with different permissions. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is a login interface of the control system;

[0035] Figure 2 It is a main interface of the control system;

[0036] Figure 3 It is a data record interface of the control system;

[0037] Figure 4 It is a Bluetooth setting interface of the control system;

[0038] Figure 5 It is a torque setting interface of the control system;

[0039] Figure 6 It is an angle setting interface of the control system;

[0040] Figure 7 It is a torque and angle setting interface of the control system;

[0041] Figure 8 It is a system menu interface of the control system;

[0042] Figure 9 It is a preset value setting interface of the control system;

[0043] Figure 10 It is a password modification interface of the control system;

[0044] Figure 11 It is a torque limit setting interface of the control system;

[0045] Figure 12It is the interface of the first step of point correction of the control system involved in the application;

[0046] Figure 13 It is the interface of the second step of point correction of the control system involved in the application;

[0047] Figure 14 It is the interface of the third step of point correction of the control system involved in the application;

[0048] Figure 15 It is the interface of the connection with the intelligent sleeve during the Bluetooth correction of the control system involved in the application

[0049] Figure 16 It is the torque correction interface after the successful Bluetooth connection of the control system involved in the application;

[0050] Figure 17 It is the tool correction interface of the control system involved in the application;

[0051] Figure 18 It is the scale adjustment interface of the control system involved in the application;

[0052] Figure 19 It is the tool information interface of the control system involved in the application;

[0053] Figure 20 It is the alarm information interface of the control system involved in the application;

[0054] Figure 21 It is the detailed alarm information of the control system involved in the application;

[0055] Figure 22 It is the point correction information interface of the control system involved in the application;

[0056] Figure 23 It is the sectional structure diagram of the servo motor electric wrench involved in the application;

[0057] Figure 24 It is the three-dimensional structure diagram of the connecting flange;

[0058] Figure 25 It is the three-dimensional structure diagram of the connecting ring;

[0059] Figure 26 It is the three-dimensional structure diagram of the rotating block;

[0060] Figure 27 It is the three-dimensional structure diagram of the reduction box shell;

[0061] Figure 28 It is the three-dimensional structure diagram of the inner tooth ring;

[0062] Figure 29 It is the three-dimensional structure diagram of the buckling ring;

[0063] Figure 30 is a perspective view of a primary sun gear;

[0064] Figure 31 is a perspective view of a primary gear assembly;

[0065] Figure 32 is a perspective view of a secondary gear assembly;

[0066] Figure 33 is a perspective view of a tertiary gear assembly;

[0067] Figure 34 is a perspective view of a quaternary gear assembly;

[0068] Figure 35 is a perspective view of a counter-force arm. DETAILED DESCRIPTION

[0069] The application will be further described below in conjunction with the drawings and specific embodiments.

[0070] In conjunction with Figures 1 to 35 A detailed description will be given to the present embodiment. The present application relates to a kind of servo motor electric wrench digital intelligent control system, including controller and servo motor electric wrench;The controller is connected between servo motor electric wrench communication.

[0071] The controller includes power connection module, system menu selection module, identity verification module, Bluetooth smart sleeve setting module, data recording module, torque angle setting module and state real-time display module.

[0072] The identity verification module is used to identify and verify the identity information of the current operator, and open part or all of the system functions corresponding to the identity level of the operator. The state display module is used to display the real-time speed, temperature and other information of the motor. The Bluetooth smart sleeve setting module is used to connect the smart sleeve with Bluetooth function. The torque angle setting module is used to set the set torque value and set angle value to be input. The system menu selection module includes system parameter modification, correction setting and system information. The system parameter modification includes preset value setting, password modification and torque limit. The correction setting includes point correction, Bluetooth correction, tool correction and scale adjustment. The system information includes tool information, alarm information, point correction information and Flash clearing.

[0073] After the servo motor electric wrench is connected, the power is turned on, the wrench indicator light is on, the display screen enters the loading interface, and then the login interface is displayed. The login interface is shown in the specific function as Figure 1 , login by inputting work number and password. Click the login button to enter the main interface, and the detailed function is as Figure 2As shown, in the main interface, the operator can set the system menu selection, torque, angle setting, Bluetooth smart sleeve setting, data recording, real-time display of motor speed and temperature, etc. The status display button can display the real-time motor speed and other detailed information on the main interface.

[0074] The data recording module provided on the controller refers to the connected TF card. Through the data recording button, the exported data can be viewed, such as Figure 3 As shown, the exported data is stored in the TF card. As shown, Figure 4 As shown, the Bluetooth setting can connect the smart sleeve with Bluetooth function. After successful connection, the Bluetooth logo will light up.

[0075] In the torque angle setting module, the torque and angle are changed, mainly including three modes: 1. Click the set torque digital box to set the input torque value. Click the triangle mark beside the digital box to select the preset torque. If the angle setting is 0 at this time, it is the torque mode, and the output torque is the set torque, as shown. Figure 5 2. Click to set the angle, change the options, and then click the set angle digital box to set the input angle value. Click the triangle mark beside the digital box to select the preset angle. If the torque setting is 0 at this time, it is the angle mode, and the output torque is the torque value generated at this angle, as shown. Figure 6 3. When there is a torque value, set the angle, or when there is an angle value, set the torque, then enter the torque plus angle mode. The wrench inputs the set torque and then rotates the corresponding angle, as shown. Figure 7 In the angle mode or torque plus angle mode, if the output torque exceeds the maximum torque value of the wrench, the maximum torque output is pressed.

[0076] As shown in the system menu, Figure 8 In the system parameter modification, click the preset value setting to modify the preset torque and preset angle, as shown. Figure 9 First, click the digital box to input the preset torque value, and then click insert to insert the torque into the preset torque value list on the main interface. Click delete to delete the preset torque in the list on the main interface. The angle preset value operation is the same as the torque preset value operation, and the angle in the list on the main interface can be added or deleted. The preset value list is as shown in Figure 5 and 6 Click password modification to input the new password and old password to modify the administrator password, and the operator password cannot be modified, as shown. Figure 10 Torque limit, set the maximum torque and minimum torque, the wrench will adjust the output torque range at this time, as shown. Figure 11 .

[0077] In the correction settings, the starting point correction is set for a certain fixed torque, and the starting point correction is set to output a certain fixed torque accurately and stably. This correction is effective for all points within the tool torque range. If you want to use point correction, you need to install the wrench on the calibration bench or install the matching smart sleeve, and make sure that the calibration tool unit is consistent with the wrench unit. Open the point correction page, input the required fixed torque, and then start the wrench, run it once, get the actual torque through the calibration device or smart sleeve, click the actual torque number box to input the torque value, and then click next. Figure 12

[0078] The second step needs to repeat the above operation steps, as shown in Figure 13 , the purpose is to further ensure the accuracy of point correction, and then click save to enter point correction mode. After entering point correction mode, return to the main interface, and before setting the torque option, the point correction icon will be displayed, as shown in Figure 14 . For the set torque in the point correction process, the system will adjust the actual torque until a new torque is input or the point correction mode is exited.

[0079] Bluetooth correction, purchase matching smart sleeve to use Bluetooth correction, as shown in Figure 15 . Through the smart sleeve APP, you can view the smart sleeve MAC value, turn on Bluetooth and input the MAC value, click Bluetooth connection to match the smart sleeve, and the Bluetooth icon will light up after successful matching. After successful connection, enter the Bluetooth mode, install the wrench on the sleeve, input the required correction torque, and then start the wrench. Through the smart sleeve, the system will automatically input the actual torque for correction. The same as point correction, two steps are required and need to be saved, as shown in Figure 16 .

[0080] Tool correction, by segmenting the tool torque range, inputting the actual torque value multiple times to adjust the tool accuracy, and the actual torque value is the actual torque measured by the instrument after the tool is pressed. The maximum percentage segmentation is generally 7%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, and then the last three percentages 80%, 90%, 100% will be automatically generated according to the previous input value. Note that the calibration value should not exceed the torque range of the tool, which will damage the tool. This function is generally used by manufacturers to correct tools, and the tools have been corrected before leaving the factory, so customers do not need to adjust it themselves. The correction demonstration is as follows Figure 17 .

[0081] Scale adjustment, this function can adjust the scale of the tool. The default coefficient 1000 corresponds to torque coefficient 1.0, and the torque coefficient parameter can be set in the range of 0.8-1.2, as shown in Figure 18 ​This correction will affect the tool correction torque output curve, so as to adjust the overall torque range, click the minus and plus in the screen, adjust the scale after clicking the save button, you can complete the tool scale adjustment. Note that the number will increase the output torque, the number will reduce the output torque.

[0082] Tool information, tool detailed information query interface as Figure 19 Alarm information, if the wrench red light error (error Figure Eight ), you can query the error information through the alarm, adjust and repair the tool, click clear after adjustment, the system will automatically reset, can't reset will report error again, such as Figure 20 . Detailed error see Figure 21 Correction information, query point correction information, click to select delete correction information, exit point correction mode, such as Figure 22 Flash clear, for the system tool used by the manufacturer, customers do not need to adjust.

[0083] The embodiment relates to a servo motor electric wrench, comprising a power module 100 and a reduction box 200.

[0084] As shown in Figure 23 , the power module 100 comprises a power module housing 101 and a servo motor 102 fixedly arranged in the power module housing 101; one side of the power module housing 101 is fixedly provided with a handle 103, and the handle 103 is provided with a power switch 104 and a reversing switch. Pressing the power switch 104 is used to activate the servo motor wrench, and the reversing switch is used to control the rotating direction of the motor, i.e. a switching switch for switching forward rotation and reverse rotation.

[0085] Further, one end of the power module housing 101 is fixedly provided with a front cover 106, and the other end is fixedly provided with a rear cover 107, and the rear cover 107 is provided with a heat dissipation hole; the power module housing 101 is fixedly connected with the connecting flange 205 through screws; one end of the power module housing 101 close to the rear cover 107 is provided with a fan 108; and the end of the handle 103 is connected with a connector seat 110 through a pressing plate 109. The connector seat 110 is used to connect a data transmission line or a power line.

[0086] Further, the power module housing 101 is provided with an LED surface mount. And the LED surface mount is provided with three LED display lamps, when the servo motor electric wrench is ready, the blue LED lamp emits light; when the servo motor electric wrench fails to complete the connection, the red LED lamp emits light; when the tool normally works to complete the torque operation, the green LED lamp emits light.

[0087] The reduction gearbox 200 comprises a reduction gearbox shell 201, a connecting ring 202, an inner gear ring 203, a rotating block 204, a connecting assembly, an input end assembly, a first-stage gear assembly, a second-stage gear assembly, a third-stage gear assembly, and a fourth-stage gear assembly. The multi-stage gear assemblies are all planetary gear structures, which have the advantages of obvious speed reduction and torque increase, small size, and light weight, and will make the power wrench operation more convenient and suitable for a wide range of applications.

[0088] As shown in Figure 27 , the inner wall of the reduction gearbox shell 201 is machined with an inner gear ring, and the outer surface of one end has a wave-shaped surface formed by protrusions 2011 and recesses, and a connecting groove 2012 is arranged at the position of the protrusion 2011 at the wave peak.

[0089] The connecting assembly comprises a connecting flange 205 and a shaft coupling 206; the connecting flange 205 is used for connecting the reduction gearbox and the power module; specifically, the connecting flange 205 is fixedly connected with the power module shell 101 through screws, and spring washers are arranged on the screws. The front cover 106 is used for fixing the servo motor 102. As shown in Figure 24 , one side of the connecting flange 205 is provided with two stepped protrusions, and a flange through hole 2051 and a flange connecting hole 2052 are arranged at the center position. The stepped side surface 2053 is a surface that rotates with the rotating block 204.

[0090] The shaft coupling 206 is used for connecting the output shaft of the servo motor 102 and the input end assembly. The shaft coupling 206 passes through the flange through hole 2051 and is connected with the output shaft of the servo motor, so that power can be transmitted from the servo motor 102 to the input end assembly.

[0091] The connecting flange 205 is connected with the rotating block 204 through screws, and outer sawtooth locking washers are arranged on the screws. As shown in Figure 25 , the surface of the rotating block 204 is uniformly distributed with recesses 2041, and the rotating block 204 is provided with a rotating block through hole 2042, and one side is a stepped structure. The rotating block 204 and the inner gear ring 203 can rotate relative to each other.

[0092] As shown in Figure 26 , the connecting ring 202 is provided with a first through hole 2021 and a connecting ring through hole 2022; the first through hole 2021 is internally provided with a spring and a steel ball 2023, and the part of the steel ball 2023 exposed from the first through hole 2021 is sunk in the recess 2041; the connecting ring 202 is fixedly connected with the inner gear ring 203 through screws; and a connecting block washer 2024 is arranged at the position of the first through hole 2021 between the connecting ring 202 and the connecting flange 205. The number of the first through holes 2021 arranged on the connecting ring 202 is four, and due to the spring and the steel ball 2023, the rotating block 204 has a certain damping feeling when rotating.

[0093] The input assembly includes a primary sun gear 207 with a bearing 208 mounted on its outer side; such as Figure 30 As shown, one end of the primary sun gear 207 is a gear, and the other end is connected to the coupling 206. When power is transmitted to the input assembly, the primary sun gear 207 rotates along with the output shaft of the servo motor 102. Furthermore, the bearing mounted on the outer side of the primary sun gear 207 is a deep groove ball bearing. Figure 30 As shown, the end of the primary sun gear 207 connected to the connecting shaft 206 is stepped, and the end face with the gear has a first steel sleeve 2071 for positioning.

[0094] like Figure 31 As shown, the primary gear assembly includes a secondary sun gear 209 and a predetermined number of primary planetary gears 210. One end of the secondary sun gear 209 has a gear, and the other end is connected to the primary planetary gears 210 via a locating pin. The primary planetary gears 210 mesh with both the internal gear ring 203 and the primary sun gear 207. When the primary sun gear 207 rotates, it drives the meshing primary planetary gears 210 to rotate, and the primary planetary gears 210 rotate along the inner side of the internal gear ring 203. The rotation of the primary planetary gears 210 along the internal gear ring 203 causes the secondary sun gear 209 to rotate. In this embodiment, there are three primary planetary gears 210. A second through hole 2091 is provided at the center of the secondary sun gear 209.

[0095] like Figure 28 As shown, the internal gear ring 203 is annular with a smooth surface in the middle. A toothed protrusion 2031 is provided on the outer side of one end. The toothed protrusion 2031 matches the inner wall of the gearbox housing 201 and is used to limit the internal gear ring 203 and the gearbox housing 201.

[0096] like Figure 32 As shown, the secondary gear assembly includes a tertiary sun gear 211 and a predetermined number of secondary planetary gears 212. One end of the tertiary sun gear 211 has a gear, and the other end is connected to the secondary planetary gears 212 via a locating pin. The secondary planetary gears 212 mesh with both the internal gear ring 203 and the secondary sun gear 209. Rotation of the secondary sun gear 209 drives the meshing secondary planetary gears 212 to rotate. The secondary planetary gears 212 rotate along the inner gear of the internal gear ring 203, thereby causing the tertiary sun gear 211 to rotate. A third through hole 2111 is provided at the center of the tertiary sun gear 211.

[0097] like Figure 33As shown, the three-stage gear assembly includes four-stage sun gear 213 and a set number of three-stage planetary gear 214; the four-stage sun gear 213 has a gear at one end and is connected with the three-stage planetary gear 214 through a positioning lock at the other end, and the three-stage planetary gear 214 is engaged with the inner ring gear arranged on the inner wall of the reduction box shell 201 and the three-stage sun gear 211. The rotation of the three-stage sun gear 211 drives the rotation of the three-stage planetary gear 214 engaged therewith, and the three-stage planetary gear 214 rotates along the inner ring gear arranged on the inner wall of the reduction box shell 201, thereby driving the rotation of the four-stage sun gear 213. The center position of the four-stage sun gear 213 is provided with a fourth through hole 2131.

[0098] As shown, Figure 34 the four-stage gear assembly includes a drive shaft 215 and a four-stage planetary gear 216; one end of the drive shaft 215 is connected with the four-stage planetary gear 216 through a positioning pin, and the four-stage planetary gear 216 is engaged with the inner ring gear arranged on the inner wall of the reduction box shell 201 and the four-stage sun gear 213. The rotation of the four-stage sun gear 213 drives the rotation of the four-stage planetary gear 216, and the four-stage planetary gear 216 rotates along the inner ring gear arranged on the inner wall of the reduction box shell 201, thereby making the drive shaft 215 rotate, and the output end of the drive shaft 215 is in the shape of a square, which is sleeved on one end of a sleeve square hole, and the other end of the sleeve is in the shape of a hexagonal hole, matching an external hexagonal bolt, so that the external hexagonal bolt can be tightened or loosened. The end center position of the drive shaft 215 is provided with a second steel sleeve 2151 for positioning.

[0099] The first sun gear 207 has a first steel sleeve 2071 at the center position of the gear at one end, and a center shaft 223 at the position of the first steel sleeve 2071, the other end of the center shaft 223 passes through the second through hole 2091 at the center of the second sun gear 209, the third through hole 2111 at the center of the three-stage sun gear 211, the fourth through hole 2121 at the center of the four-stage sun gear 213 and the second steel sleeve 2151 at the center position of the end of the drive shaft 215. The first sun gear 207, the second sun gear 209, the three-stage sun gear 211 and the four-stage sun gear 213 can be coaxial, and steel sleeves are arranged between the center shaft 223 and the first sun gear 207, the second sun gear 209, the three-stage sun gear 211, the four-stage sun gear 213 and the drive shaft 215.

[0100] Further, one end of the reduction box shell 201 is sleeved on the outside of the drive shaft 215, and a steel-based self-lubricating bearing 217, i.e. a bearing bush, is arranged between the two.

[0101] Further, the first-stage planetary gear 210, the second-stage planetary gear 212, the three-stage planetary gear 214 and the four-stage planetary gear 216 are each provided with a needle bearing between the corresponding positioning pin.

[0102] Furthermore, a clamping ring 218 is provided between the connecting ring 202 and the internal gear ring 203. A second retaining ring 221 and a lower collar 222 are provided between the gearbox housing 201 and the drive shaft 215. The second retaining ring 221 is fixed to the inner wall of the gearbox housing 201 to block the lower collar 222 and does not contact the fourth-stage sun gear 213. A first retaining ring 219 and an upper collar 220 are provided between the gearbox housing 201 and the fourth-stage sun gear 213. The first retaining ring 219 is fixed to the inner wall of the gearbox housing 201 to block the upper collar 220.

[0103] like Figure 29 As shown, the outer surface of the clamping ring 218 is provided with a clamping ring protrusion 2181 that matches the inner wall of the gearbox housing 201, and its inner side is provided with a clamping ring groove 2182 that matches the screw. The clamping ring 218 functions as a retaining ring for holes, and is assembled on the gearbox housing 201 to prevent the internal gear ring 203 from falling out of the gearbox housing 201.

[0104] Furthermore, such as Figure 35 As shown, a reaction arm 300 is sleeved on the outer side of the gearbox housing 201 near the drive shaft 215. The reaction arm 300 includes a first arm 301 and an L-shaped second arm 302. One end of the first arm 301 is sleeved on the end of the gearbox housing 201 that has a wavy surface, that is, the first arm 301 has a wavy inner surface.

[0105] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A digital intelligent control system for a servo electric wrench, characterized in that, Including controller and servo motor electric wrench, the controller is connected with servo motor electric wrench communication; The controller includes power connection module, system menu selection module, identity verification module, Bluetooth smart sleeve setting module, data recording module, torque angle setting module and state real-time display module; The identity verification module is used for identifying and verifying the identity information of the current operator, and opening part or all of the system functions corresponding to the identity level of the operator; The state real-time display module is used for displaying the real-time speed, temperature and other information of the motor; The Bluetooth smart sleeve setting module is used for connecting the smart sleeve with Bluetooth function; The torque angle setting module is used for setting the set torque value and set angle value to be input; The system menu selection module includes system parameter modification, correction setting and system information; The system parameter modification includes preset value setting, password modification and torque limit; The correction setting includes point correction, Bluetooth correction, tool correction and scale adjustment; The system information includes tool information, alarm information, point correction information and Flash clearing; The servo motor electric wrench includes power module (100) and reduction box (200); The power module (100) includes power module shell (101) and servo motor (102) fixedly arranged in the power module shell (101); One side of the power module shell (101) is fixedly provided with a handle (103), and the handle (103) is provided with a power switch (104) and a reversing switch; The reduction box (200) includes reduction box shell (201), connecting ring (202), inner tooth ring (203), rotating block (204), connecting assembly, input end assembly, primary gear assembly, secondary gear assembly, tertiary gear assembly and quaternary gear assembly; The connecting assembly includes connecting flange (205) and shaft coupling (206); The connecting flange (205) is used for connecting the reduction box and the power module; The shaft coupling (206) is used for connecting the output shaft of the servo motor (102) and the input end assembly; The connecting flange (205) is connected with the rotating block (204) through screws; The surface of the rotating block (204) is uniformly distributed with recesses (2041); The connecting ring (202) is provided with a first through hole (2021); The first through hole (2021) is provided with a spring and a steel ball (2023) inside, and part of the steel ball (2023) is located in the recess (2041); The connecting ring (202) and the inner tooth ring (203) are fixedly connected through screws; The input end assembly includes primary sun gear (207) with bearing (208) sleeved outside; One end of the primary sun gear (207) is a gear, and the other end is connected with the shaft coupling (206); The primary gear assembly comprises a secondary sun gear (209) and a set number of primary planetary gears (210); one end of the secondary sun gear (209) is provided with a gear, and the other end is connected with the primary planetary gears (210) through a positioning pin; the primary planetary gears (210) are engaged with the inner tooth ring (203) and the primary sun gear (207); The secondary gear assembly comprises a tertiary sun gear (211) and a set number of secondary planetary gears (212); one end of the tertiary sun gear (211) is provided with a gear, and the other end is connected with the secondary planetary gears (212) through a positioning pin, and the secondary planetary gears (212) are engaged with the inner tooth ring (203) and the secondary sun gear (209); The tertiary gear assembly comprises a quaternary sun gear (213) and a set number of tertiary planetary gears (214); one end of the quaternary sun gear (213) is provided with a gear, and the other end is connected with the tertiary planetary gears (214) through a positioning lock, and the tertiary planetary gears (214) are engaged with the inner tooth ring arranged on the inner wall of the reduction box shell (201) and the tertiary sun gear (211); The quaternary gear assembly comprises a drive shaft (215) and a quaternary planetary gear (216); one end of the drive shaft (215) is connected with the quaternary planetary gear (216) through a positioning pin, and the quaternary planetary gear (216) is engaged with the inner tooth ring arranged on the inner wall of the reduction box shell (201) and the quaternary sun gear (213); One end of the primary sun gear (207) is provided with a center shaft (223), and the other end of the center shaft (223) penetrates the centers of the secondary sun gear (209), the tertiary sun gear (211) and the quaternary sun gear (213) and contacts the center position of the end of the drive shaft (215).

2. The digital intelligent control system of a servo electric wrench according to claim 1, characterized in that, The reduction box shell (201) is provided with a counterforce arm (300) on the outer side of one end close to the drive shaft (215).

3. The digital intelligent control system of a servo electric wrench of claim 1, wherein, One end of the reduction box shell (201) is provided on the outer side of the drive shaft (215), and a steel-based self-lubricating bearing (217) is arranged between the two.

4. The digital intelligent control system of a servo electric wrench of claim 1, wherein, Rolling needle bearings are arranged between the primary planetary gears (210), the secondary planetary gears (212), the tertiary planetary gears (214) and the quaternary planetary gears (216) and the corresponding positioning pins.

5. The digital intelligent control system of a servo electric wrench of claim 1, wherein, The bearing arranged on the outer side of the primary sun gear (207) is a deep groove ball bearing.

6. The digital intelligent control system of a servo electric wrench of claim 1, wherein, A clamping ring (218) is arranged between the connecting ring (202) and the inner tooth ring (203).

7. The digital intelligent control system of a servo electric wrench of claim 1, wherein, A first retainer (219) and an upper sleeve ring (220) are arranged between the reduction box shell (201) and the quaternary sun gear (213).

8. The digital intelligent control system of a servo electric wrench of claim 1, wherein, A second retainer (221) and a lower sleeve ring (222) are arranged between the reduction box shell (201) and the drive shaft (215).

9. The digital intelligent control system of a servo electric wrench of claim 1, wherein, One end of the power module shell (101) is fixedly provided with a front cover (106), and the other end is fixedly provided with a rear cover (107), and the rear cover (107) is provided with a heat dissipation hole; the front cover (106) and the connecting flange (205) are fixedly connected by screws; one end of the power module shell (101) close to the rear cover (107) is provided with a fan (108); the end of the handle (103) is connected with a connector seat (110) through a pressing plate (109).

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