High-precision intelligent micro-twist electric tightening tool for screws

Abstract

The invention discloses a high-precision intelligent micro-twist electric tightening tool for a screw. The high-precision intelligent micro-twist electric tightening tool comprises a shell, a bit quick-release mechanism, a driving mechanism, a circuit board and a controller. The bit quick-release mechanism comprises a connecting seat, a connecting shaft, a steel ball, a sleeve and a pressure spring; the connecting seat is connected to the first end of the shell; the connecting shaft is rotationally connected in the connecting seat, and the extension section of the first end extends out of the connecting seat; a round hole is formed in the extension section; the steel balls are arranged in the round holes; the sleeve slides on the extension section, and an annular boss is arranged on the inner wall of the middle of the sleeve; the extension section is sleeved with the compression spring, and the two ends of the compression spring abut against the annular boss and the baffle ring. The sleeve slides to enable the annular boss to extrude the steel balls to be clamped into the groove in the tail of the screwdriver head. The driving mechanism is in transmission connection with the connecting shaft; the circuit board is electrically connected with the driving mechanism to regulate and control the output torque and rotating speed; the controller is electrically connected with the circuit board for signal interaction. User requirements and industry pain points are practically solved, the assembly quality can be remarkably improved, and the production line investment cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of industrial assembly tools, more particularly to a high-precision intelligent micro-torque electric tightening tool for screws. BACKGROUND

[0002] Screw tightening tools are essential common equipment in the field of industrial assembly, however, in the field of high-reliability automatic assembly such as automobiles 3C, imported tools are expensive, have long delivery cycles, are difficult to maintain after sale, and have certain performance surplus.

[0003] Current domestic similar products have problems such as poor precision, low efficiency, difficulty in tracing, short service life, excessive pursuit of low cost, unstable product quality control, and poor user experience. Moreover, existing screw tightening tools are relatively single, the screwdrivers are not easy to replace, and cannot meet the screw tightening work of different models.

[0004] Therefore, how to provide a tool capable of automatically tightening screws, capable of quickly disassembling screwdrivers, solving user needs and industry pain points, improving assembly quality, and reducing production line investment cost is a problem that needs to be solved by those skilled in the art. SUMMARY

[0005] Therefore, the present application provides a high-precision intelligent micro-torque electric tightening tool for screws, which can quickly assemble and disassemble screwdriver bits of different models through a bit quick disassembly mechanism, can meet the tightening work of screws of different models, can significantly improve assembly quality, can reduce production line investment cost, and can solve user needs and industry pain points.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0007] A high-precision intelligent micro-torque electric tightening tool for screws, comprising:

[0008] a housing;

[0009] a bit quick disassembly mechanism, the bit quick disassembly mechanism comprising a connecting seat, a hollow connecting shaft, a steel ball, a sleeve, and a compression spring; the connecting seat is detachably connected to a first end of the housing; the connecting shaft is rotationally connected in the connecting seat and a first end extension of the connecting shaft extends out of the connecting seat to connect a bit; a circular hole is formed in a shaft rod corresponding to the first end extension of the connecting shaft; the steel ball is placed in the circular hole; the sleeve is slidably sleeved on the extension and a ring-shaped boss is radially extended on an inner wall of the sleeve; an end of the extension away from the connecting seat is radially extended with a stop ring; the compression spring is sleeved on the connecting shaft and the two ends of the compression spring are respectively in abutment with the ring-shaped boss and the stop ring; sliding of the sleeve can cause the ring-shaped boss to extrude the steel ball so that the steel ball is clamped into a tail groove of the bit;

[0010] a driving mechanism, wherein the driving mechanism is fixed in the inner cavity of the housing and an output shaft thereof is drivingly connected to the connecting shaft;

[0011] a circuit board, the circuit board being fixed in the housing and electrically connected to the driving mechanism to regulate its output torque and speed;

[0012] A controller is electrically connected to the circuit board for signal interaction; the controller is provided with a touch screen for adjusting tightening parameters and tightening process.

[0013] The beneficial effect of the technical solution of the present invention is that the annular boss is pulled to dislocate with the circular hole on the connecting shaft. At this time, the steel ball is in a free state and can roll in the circular hole. When the 4mm standard screwdriver bit is inserted into the connecting shaft and the sleeve is loosened, the elastic restoring force of the compression spring causes the sleeve to reset. During this process, the annular boss squeezes the steel ball so that it is stuck in the groove at the tail of the screwdriver bit. When disassembly is required, only the sleeve needs to be pulled. The combination of the sleeve and the steel ball enables the screwdriver to be quickly disassembled. In addition, by utilizing the cooperation of the controller and the circuit board, a set of innovative motor drive algorithms are integrated, which can preset tightening parameters and step-by-step tightening processes to achieve stable, efficient and reliable screw tightening operations. In addition, it has a compact structure and low cost, effectively solving user needs and industry pain points, significantly improving assembly quality, and reducing production line investment costs.

[0014] Preferably, the bit quick-release mechanism further comprises a half-moon connecting shaft, which is detachably connected to the inner cavity at the second end of the connecting shaft and can be engaged with the bit. The half-moon connecting shaft engages with a tail-notch (half-moon) type bit, and the connecting shaft can engage with a wing-handle type standard bit. Through the integrated design of the half-moon connecting shaft and the connecting shaft, a bit quick-release mechanism can be seamlessly compatible with both the tail-notch type and the wing-handle type bits commonly found on the market, with a wider range of applicability. The half-moon connecting shaft is arranged in the inner cavity of the connecting shaft, making the structure more compact, and the connection between the tightening tool and the tail-notch type bit or the wing-handle type bit can be achieved without replacing the connecting shaft.

[0015] Preferably, the device further comprises a hollow main shaft, which is disposed within the connecting seat and is transmission-connected to the output shaft of the drive mechanism; the second end of the connecting shaft is embedded within the main shaft, and its outer wall can slide against the inner wall of the main shaft. The main shaft is connected to the drive mechanism, with the main shaft acting as the driving shaft and the connecting shaft acting as the driven shaft. The rotation of the main shaft transmits torque, causing the connecting shaft to drive the screwdriver bit to perform tightening.

[0016] Preferably, the buffer spring is further included; the first end of the half-moon connecting shaft is clamped with the tail-shaped head, the second end is bolted with the second end of the connecting shaft through the pin shaft, the limiting plate is fixed on the shaft rod of the connecting shaft, the buffer groove is opened on the shaft rod of the distal end of the main shaft away from the driving mechanism, the pin shaft is slidingly connected in the buffer groove, and the buffer spring is sleeved on the connecting shaft and abuts against the two side walls opposite to the limiting plate and the main shaft respectively. The axial load is generated during the screw tightening process, the buffer spring can be compressed under the action of the axial load, so that the overall mechanism of the connecting shaft and the half-moon connecting shaft slides along the inner cavity of the main shaft, and the sliding range is the length of the buffer groove. By arranging the buffer spring, the axial buffering can be realized, and the workpiece or the driving mechanism can be prevented from being damaged due to bearing axial impact load.

[0017] Preferably, the driving mechanism comprises a shaft sleeve, a motor and a speed reducer; the shaft sleeve is embedded in the main shaft; the motor is fixed in the shell; the speed reducer is key-connected with the output shaft of the motor, and the output shaft of the speed reducer is embedded in the shaft sleeve to drive the main shaft to rotate. The cooperation of the motor and the speed reducer can output a torque of 0.02Nm-1.5Nm, covering the tightening requirements of all small screws of M4 and below.

[0018] Preferably, the circuit board is integrated with an encoder to monitor the output angle of the motor and control the rotating speed and output torque of the motor. The encoder integrates the innovative motor driving algorithm, and can more efficiently, stably and reliably control the whole screw tightening process.

[0019] Preferably, the lamp ring is further included; the outer wall of the second end of the shell is provided with an assembly groove; and the lamp ring is embedded in the assembly groove and electrically connected with the circuit board. Through the color change of the lamp ring, it can be known whether the tightening operation is qualified.

[0020] Preferably, the connector is further included, the connector comprises a jack mounting seat and a jack; the jack mounting seat is fixed on the second end of the shell; and the jack is fixed in the jack mounting seat and electrically connected with the controller. The signal interaction between the jack and the controller is realized. More use scenarios of the tightening tool are fixed on the automatic production line three-axis positioning system or the robot mechanical arm, and the user realizes the automatic, efficient and reliable tightening of the screw through the controller.

[0021] Preferably, the outer wall of the shell is provided with a key, and the key is electrically connected with the circuit board. The opening and closing of the motor are controlled by the key.

[0022] It can be seen from the above technical solution that compared with the prior art, the present invention discloses a high-precision intelligent micro-torque electric tightening tool for screws, which realizes the rapid disassembly of the screwdriver bit through the cooperation of the sleeve and the steel ball, can realize the tightening of screws of different types, and uses the controller and circuit board to realize torque, speed and process control, thereby improving the control accuracy of the tightening operation. It has a compact structure, effectively solves user needs and industry pain points, can significantly improve assembly quality, and reduce production line investment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0024] Figure 1 A schematic structural diagram of the tightening tool provided by the present invention;

[0025] Figure 2 A cross-sectional view of the housing provided by the present invention;

[0026] Figure 3 for Figure 2 A magnified schematic diagram of part A in FIG;

[0027] Figure 4 A schematic diagram of the internal structure of the housing provided by the present invention;

[0028] Figure 5 A schematic diagram of the explosion of the shell provided by the present invention;

[0029] Figure 6 This is an exploded schematic diagram of the controller provided by the present invention.

[0030] Among them, 1-shell; 11-button; 2-bit quick release mechanism; 21-connecting seat; 22-protective shell; 23-spindle; 24-connecting shaft; 25-half-moon connecting shaft; 26-steel ball; 27-sleeve; 28-compression spring; 29-buffer spring; 3-connector; 31-aviation plug mounting seat; 32-aviation plug; 4-driving mechanism; 41-motor; 42-reducer; 43-motor mounting seat; 44-sleeve; 5-circuit board; 51-connector; 52-encoder; 53-light ring; 6-controller; 61-shell; 62-base plate; 63-touch screen; 64-upper computer circuit board; 65-power supply; 66-lower computer circuit board; 67-interface panel; 68-connecting aviation plug; 69-power socket. DETAILED DESCRIPTION

[0031] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0032] The accompanying drawings are included to provide a further understanding of the present application, and are incorporated herein and constitute a part of the detailed description. The embodiments of the present application will be described with reference to the drawings. Figures 1 to 6 The high-precision intelligent micro-torque electric tightening tool for screws according to the embodiments of the present application can realize quick replacement of screwdriver bits, adapt to tightening of different types of screws, and realize efficient, stable, safe and accurate operation of tightening work by using a controller and a circuit board to regulate output torque. The tool comprises a gun body and a controller 6. The gun body comprises a shell 1, a bit quick-release mechanism 2, a driving mechanism 4 and a circuit board 5. The shell 1 is an integrated aluminum shell processed with high precision, is simple and compact, is elegant and generous, is solid and durable, has no obvious exposed screws, and has higher integrity. The bit quick-release mechanism 2 is compatible with common 4mm wing handle type bits and tail notch type bits on the market, and comprises a connecting seat 21, a hollow connecting shaft 24, a steel ball 26, a sleeve 27, a compression spring 28 and a half-moon connecting shaft 25. The connecting seat 21 is detachably connected to a first end of the shell 1. The connecting shaft 24 is rotatably connected in the connecting seat 21, and an extension segment at a first end of the connecting shaft 24 extends out of the connecting seat 21 to connect the wing handle type bit. A circular hole is formed in the shaft rod corresponding to the extension segment at the first end of the connecting shaft 24. The steel ball 26 is arranged in the circular hole. The sleeve 27 is slidably sleeved on the extension segment, and a ring-shaped boss is radially extended on the inner wall of the middle part of the sleeve 27. A blocking ring is radially extended on the end of the extension segment away from the connecting seat 21. The compression spring 28 is sleeved on the connecting shaft 24, and the two ends of the compression spring 28 abut against the ring-shaped boss and the blocking ring, respectively. The sleeve 27 is slidable to extrude the steel ball 26 to make the steel ball 26 clamped into the groove of the wing handle type bit. The half-moon connecting shaft 25 is detachably connected to the inner cavity of the second end of the connecting shaft 24 and is connectable with the tail notch type bit. The half-moon connecting shaft and the connecting shaft are coaxially sleeved, and the outer wall of the half-moon connecting shaft abuts against the inner wall of the connecting shaft, so that the structure is more compact. The half-moon type bit and the wing handle type bit (both sides protruding) can be connected without replacing the connecting shaft, so that the application range is wider. The driving mechanism 4 is fixed in the inner cavity of the shell 1, and the output shaft of the driving mechanism 4 is drivingly connected to the connecting shaft 24. The circuit board 5 is fixed in the shell 1 by a plug-in part 51 and is electrically connected to the driving mechanism 4 to regulate the output torque and the rotating speed of the driving mechanism 4. The controller 6 is electrically connected to the circuit board 5 to process signals and interact. The controller 6 is provided with a touch screen 63 to realize real-time viewing of tightening results and historical tightening records, and a user can adjust tightening parameters and tightening processes according to needs.

[0033] As Figure 2 and 3As shown, in the use stage, the annular boss can press the steel ball to limit the rolling of the steel ball; when the chuck needs to be replaced, pulling the sleeve will compress the compression spring, at this time the annular boss is dislocated with the round hole, the steel ball is in a free state and can roll in the round hole, the wing handle type (two side protrusions) chuck is inserted into the connecting shaft, and the tail of the chuck is smoothly inserted due to the rolling of the steel ball. The elastic restoring force of the compression spring makes the sleeve reset, and the annular boss will extrude the steel ball to make it clamped into the groove of the chuck tail during the sleeve resetting process. The hemisphere of the steel ball is located in the round hole, and the other hemisphere is located in the groove of the chuck, so that the installation of the chuck is realized; only the sleeve needs to be pulled to replace the chuck. The compression spring is used to ensure the limiting effect of the sleeve on the steel ball, so that the sleeve does not slip during the tightening process, and the chuck is prevented from loosening.

[0034] In order to further optimize the above technical scheme, a hollow main shaft 23 is arranged in the connecting seat 21 and is in transmission connection with the output shaft of the driving mechanism 4; the second end of the connecting shaft 24 is embedded in the main shaft 23 and the outer wall thereof can slide against the inner wall of the main shaft 23. The driving mechanism 4 comprises a shaft sleeve 44, a motor 41 and a speed reducer 42; the shaft sleeve 44 is embedded in the main shaft 23; the motor 41 is fixed in the housing 1; the speed reducer 42 is in key connection with the output shaft of the motor 41, and the output shaft of the speed reducer 42 is embedded in the shaft sleeve 44 to drive the main shaft 23 to rotate.

[0035] The motor 41 and the speed reducer 42 are in key connection, the first end inner wall of the housing 1 is fixed with a motor mounting seat 43, the motor 41 and the speed reducer 42 are fixed in the inner cavity of the housing 1 close to the first end through the motor mounting seat 43, so that the motor 41 is prevented from rotating during the screw tightening process, the shaft sleeve 44 is embedded in the inner cavity of the main shaft 23, the output shaft of the speed reducer 42 is embedded in the shaft sleeve 44, and the shaft sleeve 44 is used as a shaft coupling to enable the motor 41 to drive the main shaft 23 to rotate, thereby transmitting the torque to the connecting shaft 24 to perform the screw tightening work. The combination of the motor 41 and the speed reducer 42 can output a torque range of 0.02Nm-1.5Nm, covering the tightening requirements of all small screws of M4 and below, and the simple and efficient chuck quick disassembly mechanism is compatible with common 4mm half moon tail lack type and double side protrusion type wing handle type chucks.

[0036] In order to further optimize the above technical scheme, an encoder 52 is integrated on the circuit board 5 to monitor the output angle of the motor 41 and control the rotating speed of the motor 41. The motor driving algorithm is integrated in the encoder, signal interaction is realized through the controller and the circuit board, parameters (torque, rotating speed, angle control, etc.) and tightening processes (screw cap recognition, end speed reduction, etc.) in the tightening process can be preset.

[0037] In some other embodiments, the axial load is prevented from impacting the motor and causing damage to the motor, the maintenance cost of the tightening tool is reduced, and the method further comprises a buffer spring 29; the first end of the half-moon connecting shaft 25 is clamped with the missing head chuck, and the second end is bolted to the second end of the connecting shaft 24 through a pin shaft; the connecting shaft 24 is fixed with a limiting plate on the shaft rod; the shaft rod of the main shaft 23 away from the driving mechanism 4 is provided with a buffer groove; the pin shaft is slidingly connected in the buffer groove; and the buffer spring 29 is sleeved on the connecting shaft 24 and abuts against the two side walls opposite to the limiting plate and the main shaft 23.

[0038] In the embodiment, the inner walls of the connecting seat corresponding to the main shaft and the connecting shaft are embedded with bearings, and the main shaft and the connecting shaft are matched with the inner rings of the two bearings. The bearings can support the main shaft and the connecting shaft in the inner cavity of the connecting seat and enable the main shaft and the connecting shaft to rotate synchronously.

[0039] In some other embodiments, the outer wall of the connecting seat 21 is screwed with a protective shell 22.

[0040] In order to further optimize the above technical solution and understand the tightening degree, the lamp ring 53 is further arranged; the outer wall of the second end of the shell 1 is provided with an assembly groove; and the lamp ring 53 is embedded in the assembly groove and electrically connected with the circuit board 5. The lamp ring 53 can emit light of different colors, such as yellow light during the tightening process, which changes to green light when the tightening reaches the preset torque, thereby sequentially prompting the operator that the screw has been tightened in place; and red light proves that the screw tightening is unqualified, and the torque needs to be increased or decreased for secondary tightening operation.

[0041] In some other embodiments, the outer wall of the shell is fixed with a buzzer, and the buzzer is electrically connected with the circuit board. The sound change of the buzzer can also prompt the operator to understand the screw tightening condition.

[0042] In order to further optimize the above technical solution, the outer wall of the shell 1 is provided with a key 11, and the key 11 is electrically connected with the circuit board 5. The key function can be customized through the software background, and is set as start and reverse switching according to the user habit.

[0043] In the embodiment, the connector 3 is further arranged, and the connector 3 comprises a jack mounting seat 31 and a jack 32; the jack mounting seat 31 is fixed to the second end of the shell 1; and the jack 32 is fixed in the jack mounting seat 31 and electrically connected with the controller 6.

[0044] For example, Figure 6As shown, the controller 6 comprises a housing 61, the bottom end of which is detachably connected with a bottom plate 62, and the top end is detachably connected with an interface panel 67; the housing 61 is integrated with an upper computer circuit board 64, a power supply 65 and a lower computer circuit board 66; one side wall of the housing 61 is fixed with a touch screen 63, which is electrically connected with the power supply 65 and communicatively connected with the upper computer circuit board 64 and the lower computer circuit board 66; a plurality of interfaces are formed on the interface panel 67, a power socket 69 and a connection jack 68 are fixed on the interface panel 67, and the connection jack 68 is connected with the jack 32 through a connecting line.

[0045] The motor is started by a button control or a controller control; the torque and the tightening result can be set and displayed through the touch screen. The data in the tightening process is recorded in real time by the controller, and up to 500 process programs and 100,000 tightening results can be stored.

[0046] The tightening tool of the embodiment integrates mechanical, electronic, control algorithm, software, human-machine engineering and other aspects, realizes the industry-leading automatic tightening precision control, simple and easy user experience, stable, efficient, safe, long service life and first-class quality, and effectively solves the user demand and industry pain points, which can significantly improve the assembly quality and reduce the production line investment cost.

[0047] Embodiment 1

[0048] The embodiment provides an application of the high-precision intelligent micro-torque electric tightening tool for screws in the automobile assembly field in embodiment 1. In the automobile assembly production line, a large number of small screws need to be tightly screwed with high precision. The tightening tool of the embodiment is adapted to the torque range of 0.02 Nm-1.5 Nm through different combinations of the motor and the reducer, and can meet the tightening requirements of all small screws of M4 and below in automobile assembly. The tool is designed with an axial buffer stroke, which can effectively avoid damage of the motor and the workpiece caused by bearing axial impact load. At the same time, the chuck quick disassembly mechanism is compatible with common 4mm half-moon tail missing type and double-sided convex point type wing handle type chucks, can quickly replace chucks of different specifications, and is suitable for screw tightening in different positions. In actual use, the tool is installed on a robot mechanical arm, the target tightening parameters and process steps are set through the touch screen interface of the controller, the tool tightening action is triggered by an external PLC control system, the tightening result is displayed in real time on the touch screen, and the operator is informed whether the tightening is qualified through the three-color lamp ring and the buzzer. The tightening data is recorded in real time by the controller, which is convenient for subsequent quality traceability. The use of the tool significantly improves the efficiency and quality of automobile assembly, and reduces the labor cost and error rate.

[0049] Embodiment 2

[0050] This embodiment provides the application of a high-precision intelligent micro-torque electric tightening tool for screws in Example 1 in the manufacture of C electronic products. In the manufacturing process of 3C electronic products, the tightening accuracy requirements for small screws are extremely high, and screws of different specifications need to be replaced frequently. The tightening tool of this embodiment adopts precision-machined structural parts and innovatively optimized motor drive algorithms, which can achieve a repeatable torque accuracy of ±3% and an angle accuracy requirement of ±1%. Its screwdriver bit quick-release mechanism is cleverly designed, and the screwdriver bit can be quickly replaced by pulling the sleeve, which greatly improves production efficiency. In actual applications, the tool is installed on a three-axis coordinate positioning device, and the precise tightening parameters such as torsion, speed, angle control, etc., as well as complex process steps such as screw cap recognition and end speed reduction are set through the controller. The tool can provide real-time feedback on tightening data during the tightening process, and prompt the operator of the tightening results through a light ring and a buzzer. The use of this tool effectively improves the assembly accuracy and reliability of 3C electronic product manufacturing and ensures the stability of product quality.

[0051] Example 3

[0052] This embodiment provides an application of a high-precision intelligent micro-twist electric tightening tool for screws in Example 1 in the assembly of aerospace parts. The assembly of aerospace parts has extremely strict requirements on the precision and reliability of screw tightening. The high-precision intelligent micro-twist tightening tool of this embodiment meets the high precision and high reliability requirements of tightening tools in the aerospace field through a reasonably designed compact and efficient electronic circuit and a simple and friendly user interface. The motor and reducer combination of the tool can output stable torque, covering the small torque range required in the assembly of aerospace parts. The axial buffer design and the quick release mechanism of the bit not only ensure the stability of the tightening process, but also improve the service life of the tool. During the actual assembly process, the tool is connected to the power arm, and the operator can easily set and adjust the tightening parameters through the controller touch screen interface to ensure that the tightening process of each screw meets strict quality standards. The tightening data is recorded and stored in real time to facilitate subsequent quality tracing and analysis. The use of this tool provides a strong guarantee for the high-quality assembly of aerospace parts, improves assembly efficiency, and reduces the quality risks caused by improper tightening.

[0053] Example 4

[0054] The embodiment provides application of the high-precision intelligent micro-torque electric tightening tool for screws in medical device manufacturing in the embodiment 1. The manufacturing of medical devices has very high requirements for the assembly precision and cleanliness of parts. The high-precision intelligent micro-torque tightening tool in the embodiment plays an important role in the manufacturing of medical devices. The high-precision torque control and angle control functions of the tool ensure the accurate assembly of key parts in medical devices. The quick chuck mechanism of the tool can quickly replace the chuck in a dust-free environment, avoiding the pollution risk caused by replacing the chuck. The controller of the tool has a good man-machine interface, and the operator can conveniently set and monitor the tightening process. In actual application, the tool is integrated with the PLC system of the medical device production line through the connector, realizing automatic tightening operation. The tightening result is displayed in real time on the screen of the controller and intuitively prompts the operator through the ring of lights and the buzzer. The use of the tool improves the assembly quality and efficiency of medical device manufacturing, ensuring the reliability and safety of products.

[0055] Embodiment 5

[0056] The embodiment provides application of the high-precision intelligent micro-torque electric tightening tool for screws in the manufacturing of precision instruments in the embodiment 1. The manufacturing of precision instruments requires high-precision screw tightening equipment to ensure the performance and stability of the instruments. The high-precision intelligent micro-torque tightening tool in the embodiment can meet the high-precision requirements of screw tightening in the manufacturing of precision instruments through its precise mechanical structure and advanced electronic control system. The motor and reducer combination of the tool is optimized in design, which can output stable torque to ensure the consistency of screw tightening. The quick chuck mechanism of the tool is reasonably designed, which can quickly replace chucks of different specifications to adapt to the tightening needs of various small screws in precision instruments. In actual application, the tool is installed on an operation table, and an operator sets accurate tightening parameters and process steps through the touch screen interface of the controller. The tool can monitor torque and angle in real time during the tightening process and store the data in the controller. The tightening result is intuitively prompted to the operator through the ring of lights and the buzzer, ensuring that the tightening process of each screw meets the quality standards. The use of the tool improves the assembly precision and efficiency of precision instrument manufacturing, reduces quality problems caused by improper tightening, and improves the overall performance and reliability of products.

[0057] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the related parts can be referred to the method part.

[0058] The foregoing description of the disclosed embodiments enables a person skilled in the art to make or use the application. Modifications of these embodiments will occur to persons of skill in the art, and, while certain modifications are discussed, it is desired to be protected in accordance with the spirit and scope of the application. Therefore, the application is not limited to the specific embodiments shown and described, but only by the scope of the appended claims, unless otherwise specified.

Claims

1. A high-precision intelligent micro-twist electric tightening tool for screws, characterized in that: include: housing (1), The screwdriver bit quick release mechanism (2) comprises a connecting seat (21), a hollow connecting shaft (24), a steel ball (26), a sleeve (27) and a compression spring (28); the connecting seat (21) is detachably connected to the first end of the housing (1); the connecting shaft (24) is rotatably connected to the connecting seat (21) and the extension section of the first end thereof extends out of the connecting seat (21) to connect the screwdriver bit; the connecting shaft (24) is provided with a shaft rod corresponding to the extension section of the first end thereof. There is a circular hole; the steel ball (26) is placed in the circular hole; the sleeve (27) is slidably mounted on the extension section and an annular boss is radially extended from the inner wall of the middle section, and a retaining ring is radially extended from the end of the extension section away from the connecting seat (21); the compression spring (28) is mounted on the connecting shaft (24) and its two ends are respectively in contact with the annular boss and the retaining ring; the sleeve (27) slides to allow the annular boss to squeeze the steel ball (26) so that it is stuck in the groove at the tail of the screwdriver; A driving mechanism (4), wherein the driving mechanism (4) is fixed in the inner cavity of the housing (1) and an output shaft thereof is drivingly connected to the connecting shaft (24); A circuit board (5), the circuit board (5) being fixed in the housing (1) and electrically connected to the driving mechanism (4) to regulate its output torque and rotational speed; A controller (6) is electrically connected to the circuit board (5) for signal interaction; the controller (6) is provided with a touch screen (63) for adjusting tightening parameters and tightening process.

2. A high-precision intelligent micro-twist electric tightening tool for screws according to claim 1, characterized in that: The screwdriver bit quick-release mechanism (2) further comprises a half-moon connecting shaft (25), wherein the half-moon connecting shaft (25) is detachably connected to the inner cavity of the second end of the connecting shaft (24) and can be clamped with the screwdriver bit.

3. A high-precision intelligent micro-twist electric tightening tool for screws according to claim 2, characterized in that: The invention also includes a hollow main shaft (23), which is arranged in the connecting seat (21) and is transmission-connected to the output shaft of the driving mechanism (4); the second end of the connecting shaft (24) is embedded in the main shaft (23) and the outer wall thereof can be slidably abutted against the inner wall of the main shaft (23).

4. A high-precision intelligent micro-twist electric tightening tool for screws according to claim 3, characterized in that: The invention also includes a buffer spring (29); the first end of the half-moon connecting shaft (25) can be clamped with the tail-notch type screwdriver bit, and the second end is bolted to the second end of the connecting shaft (24) through a pin; a limit plate is fixed on the shaft of the connecting shaft (24); a buffer groove is provided on the shaft of the main shaft (23) away from the end of the driving mechanism (4); the pin is slidably connected in the buffer groove; the buffer spring (29) is sleeved on the connecting shaft (24) and its two ends are respectively in contact with the two side walls opposite to the limit plate and the main shaft (23).

5. The high-precision intelligent micro-twist electric tightening tool for screws according to claim 3, characterized in that: The driving mechanism (4) comprises a shaft sleeve (44), a motor (41) and a reducer (42); the shaft sleeve (44) is embedded in the main shaft (23); the motor (41) is fixed in the housing (1); the reducer (42) is key-connected to the output shaft of the motor (41), and the output shaft of the reducer (42) is embedded in the shaft sleeve (44) to drive the main shaft (23) to rotate.

6. A high-precision intelligent micro-twist electric tightening tool for screws according to claim 5, characterized in that: An encoder (52) is integrated on the circuit board (5) to monitor the output angle of the motor (41) and control the rotation speed of the motor (41).

7. A high-precision intelligent micro-twist electric tightening tool for screws according to claim 6, characterized in that: It also includes a light ring (53); an outer wall of the second end of the housing (1) is provided with an assembly groove; the light ring (53) is embedded in the assembly groove and electrically connected to the circuit board (5).

8. The high-precision intelligent micro-twist electric tightening tool for screws according to claim 1, characterized in that: The invention also includes a connector (3), wherein the connector (3) includes an aviation plug mounting seat (31) and an aviation plug (32); the aviation plug mounting seat (31) is fixed to the second end of the housing (1); and the aviation plug (32) is fixed in the aviation plug mounting seat (31) and is electrically connected to the controller (6).

9. The high-precision intelligent micro-twist electric tightening tool for screws according to claim 1, characterized in that: A button (11) is provided on the outer wall of the housing (1), and the button (11) is electrically connected to the circuit board (5).

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