1.A brief introduction to hollow rotary actuators
A hollow rotary actuator is a rotary actuator with a hollow structure, usually including a hollow box, a motor, a reducer, a sensor, a controller and other components. Its internal rotation is connected to an output shaft, and the motor is connected to the output shaft through a transmission assembly to achieve a rotary motion. Hollow rotary actuators have the characteristics of high torque, high precision and high resolution, and are often used in occasions requiring high-precision rotary motion.
2.Working principle of hollow rotary actuators
The working principle of hollow rotary actuators is to transmit power to the rotating platform through the rotational torque of the motor through a precision transmission device (such as gears, belts, etc.) to drive it to rotate. The control system accurately controls the motor according to preset parameters (such as rotation speed, rotation angle, etc.) to ensure that the rotating platform moves according to the expected motion trajectory.
3.Structural features of hollow rotary actuators
1.Hollow structure design: The center of the hollow rotary actuator is a hollow structure. This design allows other equipment and pipelines (such as wires, air pipes, etc.) to pass through, which greatly simplifies the system design and installation process, reduces the interference and safety hazards caused by the exposed lines, and makes the overall layout of the equipment more neat and beautiful.
2.High precision and repeatability accuracy: The hollow rotary actuator adopts a precise gear transmission and bearing system to ensure rotation accuracy and repeatability accuracy. Its repeatability accuracy can usually reach ±30 seconds or even higher, meeting the needs of high-precision applications.
3.High rigidity: The turntable of the hollow rotary actuator is supported by a precision cross roller bearing, which can withstand multiple torques such as radial, axial, and overturning. Its rigidity is more than 5 times that of traditional bearings. This design enables the actuator to maintain low vibration even at high speed, reducing the impact on surrounding equipment.
4.Multiple installation methods: The hollow rotary actuator supports multiple installation methods such as horizontal and vertical to adapt to different application scenarios. By customizing the flange and input shaft hole, the interface size can be flexibly changed, suitable for connecting any brand of servo motor or stepper motor.
5.Modular design: The hollow rotary actuator adopts a modular design, which allows users to choose different configurations and functions according to their needs. This design makes the actuator more convenient for maintenance and upgrades.
6.High efficiency and reliability: The hollow rotary actuator ensures unlimited angle adjustment through fine-machining of worm gears or gear transmission. The application of precision shaft system design and imported high-quality elastic couplings further enhances the overall performance and reliability of the platform.
4.Common applications of hollow rotary actuators
1.Industrial automation: In the field of industrial automation, the hollow rotary actuator is one of the key components for realizing automated production lines. It can accurately transmit rotary motion to various mechanical equipment to ensure the accuracy and efficiency of the production process.
2.Robotics: In the field of robotics, the hollow rotary actuator plays an important role. It can help robots achieve more flexible and precise motion control, thereby improving the working efficiency and precision of robots. In addition, hollow rotary actuators also enable robots to rotate 360 degrees without changing direction, which is particularly suitable for robots that require visual monitoring and data collection.
3.Medical equipment: In the field of medical equipment, hollow rotary actuators are also widely used. For example, in surgical robots, hollow rotary actuators ensure the precise movement and positioning of surgical instruments, improving the accuracy and safety of surgery. In addition, in medical imaging diagnosis and magnetic resonance imaging, hollow rotary actuators serve as support systems to help scan different parts of the patient.
4.Photography and entertainment: Hollow rotary actuators are also widely used in the photography and entertainment industries. For example, in panoramic image shooting, hollow rotary actuators can help photographers create a series of photos with overlapping depth of field. In addition, in carousels and roller coasters in amusement parks, hollow rotary actuators realize the rotation function.
5.Aerospace: In the field of aerospace, hollow rotary actuators ensure the accurate movement and positioning of various precision components, providing strong guarantees for the smooth progress of aerospace missions.