What are the installation precautions of hollow rotary actuators?

1. Introduction to the structure of hollow rotary actuators

The main structure of hollow rotary actuators includes conveyor belts, motors, hydraulics and electronic controls. Its moving part is a ring conveyor belt, which can realize the combination of translation and rotation, thereby improving production efficiency. The motor and hydraulic drive parts of the equipment adopt advanced modular design, making the equipment structure more compact and reasonable, with higher reliability and stability.

2. Driving mode of hollow rotary actuators

1. Gear transmission: Power and rotational motion are transmitted through the meshing of gears. Gear transmission can achieve high-precision transmission ratios, which is suitable for heavy equipment and production lines. It has the characteristics of strong load-bearing capacity, mature technology and high reliability.

2. Direct drive technology: The motor is directly connected to the hollow rotary platform to achieve efficient and precise rotational motion. Direct drive technology reduces the intermediate transmission links and improves energy utilization. At the same time, it has high precision and stability and is easy to maintain.

‌3. Belt drive‌: The belt is used to drive the hollow rotary platform, which is suitable for small and medium-sized rotary platforms and has the advantages of simple structure and convenient maintenance.

‌4. Electric drive‌: The electric motor is used to directly drive the hollow rotary platform, which has the advantages of high transmission efficiency and low noise, and is suitable for small and medium-sized rotary platforms.

3. Technical advantages of hollow rotary actuators

‌1. High precision and high efficiency‌: The hollow rotary actuator adopts a precise control system and a high-precision servo motor to achieve high positioning repeatability and accuracy. For example, in the field of semiconductor wafer inspection, the hollow rotary platform can achieve a positioning accuracy of ±5 arc seconds, ensuring that the million-pixel inspection equipment can operate stably at nanometer resolution.

‌2. High load-bearing capacity and stability‌: The design of the hollow rotary actuator makes it have high load-bearing capacity. For example, some models of hollow rotary platforms can easily carry 150kg of precision inspection instruments to complete 360° scanning without dead angles. In addition, its rigidity performance is also excellent. The turntable is supported by a set of precision cross roller bearings, which can withstand various torques such as radial, axial, and overturning. The rigidity is more than 10 times that of traditional bearings.

‌3. Compact structure and flexibility: The hollow rotary actuator adopts a hollow structure design, which makes the equipment compact and occupies a small area, suitable for space-constrained application scenarios. At the same time, its modular design allows for quick replacement of the end effector, which is convenient for integrating force control sensors and visual systems to achieve rapid process switching.

‌4. Wide application scenarios: Hollow rotary actuators are widely used in many fields. For example, in CNC indexing devices, precise indexing control is provided to improve processing accuracy; at the joints of the manipulator, the hollow structure facilitates pipeline layout, making the manipulator move more smoothly and perform complex tasks; in the fourth processing axis of the machine tool, more dimensional processing operations are realized; in the field of military radar, it helps the radar to accurately adjust the angle and improve the detection performance; in the automated production line, it controls the rotation positioning of material transmission and processing links, etc.

4. Precautions for installation of hollow rotary actuators

‌1. Preparation: Before installation, it is necessary to confirm whether the motor and hollow rotary platform are intact, and check whether the dimensions of each component match, including the positioning boss of the motor, the input shaft and the reducer groove, and the size and matching tolerance. At the same time, clean the installation surface to ensure that there is no anti-rust oil or other impurities.

‌2. Installation location and environment: The hollow rotary platform should be installed indoors to avoid direct sunlight and heat radiation. The working environment temperature should be between 0-50 degrees, and the temperature below the origin sensor should not exceed 42 degrees. In addition, the working environment should be dry to avoid flammable and explosive gases and dust, oil, splashing water, etc.

‌3. Connection method: The motor and the rotary platform equipment should be naturally connected to ensure that the concentricity of the reducer output shaft and the motor input shaft is consistent, and the outer flange is parallel. It is forbidden to use tools such as hammers when connecting to prevent excessive axial force or radial force from damaging the bearing or gear.

‌4. Sealing: Pay special attention to the sealing of the equipment, especially the sealing of the shaft of the servo hollow rotary platform. During installation, the mounting bolts at the diagonal position should be tightened gradually to ensure the internal sealing of the equipment and prevent environmental pollution.

‌5. Electrical connection: The hollow rotating platform requires power support, so the electrical lines need to be connected during installation. The length and color of the wires should be easy to manage and maintain, and the signal wires should be connected to the controller to ensure the operation control of the equipment.

‌6. Debugging and inspection: After the installation is completed, perform detailed positioning and precision adjustments to ensure smooth and stable operation of the equipment. Debug and inspect the electrical system to ensure its safety and stability.