A new type of super large torque servo electric screwdriver

Abstract

The utility model discloses a novel super large torque servo electric wrench, including servo motor, planetary gear box, support frame, operating handle, torque transmission subassembly and wrench head part, control part contains touch -sensitive screen, PLC, research control servo drive, gateway and server MYSQL database, and touch -sensitive screen is connected with PLC communication and realizes man -machine interaction, and PLC is connected with research control servo drive, and research control servo drive is connected with servo motor, to control servo motor operation, and gateway will electric wrench operation data synchronization to server MYSQL database, realizes data tracing. The servo electric wrench selects normal volume servo motor and planetary reduction gearbox, and planetary gear box transmission efficiency is high, and reduces the efficiency loss in power transmission process, guarantees torque output while improving energy utilization efficiency, and combines PLC software segmentation rectification simultaneously, breaks through the mechanical structure precision limit, satisfies the high accuracy requirement of new energy motor to screw tightening.

Description

Technical Field

[0001] This utility model relates to the field of new energy motor technology, and in particular to a new type of ultra-high torque servo electric screwdriver. Background Technology

[0002] In new energy motor projects, there is a demand for ultra-high torque servo electric screwdrivers, but the two common servo electric screwdriver structures in existing technologies have obvious defects:

[0003] Firstly, the structure using a small motor with planetary gears not only has low precision (torque deviation of about 3%), but also cannot achieve a large torque (maximum of 30Nm and cannot be used at full load). Secondly, the structure using a small motor with planetary gears and bevel gears for reduction can increase the torque to 65Nm, but due to the poor conversion efficiency of the bevel gears, the electric screwdriver has extremely poor precision (deviation of up to 12%).

[0004] In summary, existing servo electric screwdrivers cannot meet the requirements of new energy motor projects for high-precision, high-torque servo electric screwdrivers in terms of accuracy and torque. Therefore, it is urgent to develop electric screwdrivers with new structures. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defects of the existing technology and provide a new type of ultra-high torque servo electric screwdriver that can meet the needs of new energy motor projects for high precision and high torque servo electric screwdrivers.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a novel ultra-high torque servo electric screwdriver, comprising:

[0007] Power unit: Servo motor, which provides power output for the electric screwdriver;

[0008] Transmission components: planetary gearbox, connected to the servo motor for transmitting and changing power; support frame, fitted onto the output end of the planetary gearbox; operating handle, mounted on the support frame; torque transmission assembly, mounted onto the output end of the planetary gearbox for transmitting torque to the bit.

[0009] The control section includes a touch screen, a PLC, and a servo drive. The touch screen is connected to the PLC for human-machine interaction, the PLC is connected to the servo drive, and the servo drive is connected to the servo motor to control the servo motor's operation. It also includes a gateway and a MySQL server database. The PLC is connected to the gateway via a network, and the gateway synchronizes the electric screwdriver's operation data to the MySQL server database to achieve data traceability.

[0010] Bit part: Bit connecting sleeve, which is adapted to connect to the end of the round and square shaft away from the bushing, and is used to connect the bit; the bit is installed on the bit connecting sleeve and is used to perform tightening or loosening of screws.

[0011] Furthermore, the torque transmission assembly includes a bushing, a top-rounded shaft and a small pin. The bushing is adapted to the output end of the planetary gearbox, and one end of the top-rounded shaft is inserted into the bushing. The small pin enables circumferential positioning and torque transmission.

[0012] Furthermore, the inner hexagonal screws are screwed into the circular shaft to reinforce the shaft connection and ensure a stable torque transmission path.

[0013] Furthermore, the bushing is connected to the output end of the planetary gearbox via a keyway.

[0014] Furthermore, the control unit sends commands via a touchscreen, which are then processed by the PLC to control the servo drive, thereby controlling the operation of the servo motor. Simultaneously, the PLC collects the electric screwdriver's operating data and uploads it to the server's MySQL database via a gateway, enabling traceability of production process parameters.

[0015] Furthermore, the bit connecting sleeve is adapted to connect the top-round and bottom-round shaft to the bit, allowing for the replacement of different bits according to the screw specifications. The connection structure is stable, ensuring that torque is effectively transmitted to the bit.

[0016] Furthermore, the operating handle is fixed to the support frame by a nut.

[0017] The novel ultra-high torque servo electric screwdriver of this utility model has the following advantages:

[0018] 1. Adopting a new structural design with a round top and square bottom shaft, it abandons the complex and inefficient transmission structure and transmits torque in a square shaft form. The structure is simple and compact, reducing the adaptation error between transmission components, ensuring a stable and efficient torque transmission path, and can stably output ultra-large torque. It is suitable for high-torque assembly scenarios such as new energy motors, and solves the problems of torque loss and insufficient accuracy caused by the structural redundancy of traditional electric screwdrivers.

[0019] 2. A standard-sized servo motor and planetary gearbox are selected. Compared with traditional inefficient transmission solutions such as bevel gears, the planetary gearbox has high transmission efficiency, reduces efficiency loss during power transmission, ensures torque output, and improves energy utilization efficiency.

[0020] 3. By combining PLC software with segmented correction, precise compensation and correction are made for different torque output ranges, breaking through the precision limitations of mechanical structure and reducing the torque control accuracy deviation to less than 2%, which meets the high precision requirements of screw tightening for new energy motors and other applications.

[0021] 4. The gateway is equipped with a server that synchronizes and stores process parameters in conjunction with a MySQL database, enabling traceability of production process parameters and facilitating production control, quality traceability, and problem troubleshooting. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the control part of this utility model;

[0025] In the diagram: 1. Servo motor, 2. Planetary gearbox, 3. Support frame, 4. Bushing, 5. Round top and square bottom shaft, 6. Small shaft pin, 7. Bit connecting sleeve, 8. Bit, 9. Socket hex screw, 10. Nut, 11. Operating handle. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0027] As shown in the figure, a new type of ultra-high torque servo electric screwdriver includes:

[0028] Power unit: Servo motor 1, which provides power output for the electric screwdriver.

[0029] Transmission components: Planetary gearbox 2, connected to servo motor 1 for power transmission and modification; support frame 3, fitted onto the output end of planetary gearbox 2; operating handle 11, fixed to support frame 3 by nut 10; torque transmission assembly, installed at the output end of planetary gearbox 2 for transmitting torque to bit 8, including bushing 4, a round-and-square shaft 5, and small pin 6. Bushing 4 is fitted to the output end of planetary gearbox 2 and connected to the output end of planetary gearbox 2 via a keyway. One end of the round-and-square shaft 5 is inserted into bushing 4, and circumferential limiting and torque transmission are achieved through small pin 6. An internal hexagon screw 9 is screwed into the round-and-square shaft 5 to reinforce the shaft connection and ensure stable torque transmission path.

[0030] The control unit includes a touchscreen, PLC, and servo drive. The touchscreen communicates with the PLC for human-machine interaction, the PLC connects to the servo drive, and the servo drive connects to the servo motor to control its operation. It also includes a gateway and a MySQL database server. The PLC connects to the gateway via a network, and the gateway synchronizes the electric screwdriver's operating data to the MySQL database server for data traceability. The control unit sends commands through the touchscreen, which are processed by the PLC to control the servo drive, which in turn controls the servo motor. Simultaneously, the PLC collects the electric screwdriver's operating data and uploads it to the MySQL database server via the gateway, enabling traceability of production process parameters.

[0031] Bit section: Bit connecting sleeve 7, with both ends adapted to connect the top and bottom round shafts 5 and bit 8 respectively, allowing different bits to be replaced according to the screw specifications, and the connection structure is stable, ensuring that the torque is effectively transmitted to the bit; bit 8, installed on bit connecting sleeve 7, is used to perform screw tightening or loosening operations.

[0032] In practical applications, operators set tightening parameters (target torque, speed, etc.) via a touchscreen. The PLC controls the servo drive according to the instructions, which drives the servo motor to run. The power is then transmitted to the screwdriver bit through the planetary gearbox and torque transmission component to complete the screw tightening operation. During the process, the database continuously records the running data, which is convenient for later quality analysis and equipment maintenance. If any abnormality occurs (such as torque deviation exceeding the limit), the fault can be quickly identified by tracing the data.

[0033] Based on the mechanical foundation of a normal structure servo motor and planetary reducer (ensuring torque accuracy deviation <3%), a segmented correction program is set through PLC software to accurately compensate and correct different torque output ranges, so that the final torque control accuracy deviation is less than 2%, meeting the high-precision tightening requirements.

[0034] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A novel ultra-high torque servo electric screwdriver, characterized by: include: Power section: Servo motor (1), which provides power output for the electric screwdriver; Transmission components: planetary gearbox (2), which is connected to the servo motor (1) for transmitting and changing power; support frame (3), which is fitted onto the output end of the planetary gearbox (2); operating handle (11), which is mounted on the support frame (3); A torque transmission assembly is installed at the output end of the planetary gearbox (2) to transmit torque to the bit (8). The control section includes a touch screen, a PLC, and a servo drive. The touch screen is connected to the PLC for human-machine interaction, the PLC is connected to the servo drive, and the servo drive is connected to the servo motor to control the servo motor's operation. It also includes a gateway and a MySQL server database. The PLC is connected to the gateway via a network, and the gateway synchronizes the electric screwdriver's operation data to the MySQL server database to achieve data traceability. Bit part: Bit connecting sleeve (7) is adapted to the torque transmission component for connecting bit (8); bit (8) is mounted on bit connecting sleeve (7) for performing screw tightening or loosening operations.

2. The novel ultra-high torque servo electric screwdriver according to claim 1, characterized in that: The torque transmission assembly includes a bushing (4), a round-and-square shaft (5), and a small pin (6). The bushing (4) is adapted to the output end of the planetary gearbox (2). One end of the round-and-square shaft (5) is inserted into the bushing (4), and circumferential positioning and torque transmission are achieved through the small pin (6).

3. The novel ultra-high torque servo electric screwdriver according to claim 2, characterized in that: The inner hexagonal screw (9) of the round-and-square shaft (5) is screwed in to reinforce the shaft connection and ensure the stability of the torque transmission path.

4. The novel ultra-high torque servo electric screwdriver according to claim 2, characterized in that: The bushing (4) is connected to the output end of the planetary gearbox (2) via a keyway.

5. The novel ultra-high torque servo electric screwdriver according to claim 1, characterized in that: The control unit sends commands via a touchscreen, which are then processed by the PLC to control the servo drive and subsequently the servo motor. Simultaneously, the PLC collects the electric screwdriver's operating data and uploads it to the server's MySQL database via a gateway, enabling traceability of production process parameters.

6. The novel ultra-high torque servo electric screwdriver according to claim 1, characterized in that: The two ends of the bit connecting sleeve (7) are respectively adapted to connect the top-round and bottom-round shaft (5) and the bit (8), allowing different bits to be replaced according to the screw specifications. The connection structure is stable, ensuring that the torque is effectively transmitted to the bit.

7. A novel ultra-high torque servo electric screwdriver according to claim 1, characterized in that: The operating handle (11) is fixed to the support frame (3) by a nut (10).

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