DO YOU KNOW THE PRINCIPLE AND FUNCTION OF A ROTARY JOINT ?(2)

A rotary joint is a commonly used component in mechanical assembly to connect two parts that can rotate relative to each other. The principle is to design a special structure so that the two parts can rotate relative to each other without affecting the movement of the entire mechanical assembly.

1.The principle of the rotary joint

The rotary joint is mainly composed of parts such as the outer ring, the inner ring, the ball, the cage and the sealing ring. The outer ring and the inner ring are connected to each other through a bearing structure, and the balls are placed between the inner ring and the outer ring to reduce friction and transmit torque. The function of the cage is to fix the position of the ball, preventing it from deflecting or rolling poorly. The sealing ring is used to prevent external substances such as dust and liquid from entering the inside of the rotary joint to ensure its normal operation.

2.The role of the rotary joint

1). Transmission torque: The rotary joint is able to withstand a certain rotating torque and transmit it to the connected parts. Through the connection of the rotary joint, the two parts can be rotated relative to each other, and the rotating torque can be transmitted at the same time, so as to realize the movement of the whole assembly.

2). Reduce friction: The swivel joint has a ball structure, so friction will occur between two parts that rotate relatively. The use of balls can reduce this friction, reduce the wear of the connecting parts, and improve the life of the assembly.

3). Adjust the angle: The rotary joint usually has a certain angle adjustment function, which can make the connecting parts rotate relative to each other within a certain range. This allows for flexible adjustment of the angle of the components to suit different working environments and assembly requirements.

4). Transmit signals and energy: Some rotary joints can also be used to transmit signals and energy. For example, in power transmission equipment, rotary joints can be used to transfer current and signals from a stationary part to a rotating part for uninterrupted power supply and data transmission.

3.Summary

In addition to the main functions mentioned above, the swivel joint also has a number of additional functions. For example, some swivel joints are waterproof, dust-proof, and explosion-proof, allowing them to be used in special environments. In addition, some rotary joints are capable of automatic lubrication, noise reduction, and hydrophobic, further improving the performance and reliability of the assembly.

In short, as a commonly used mechanical connection component, rotary joints have a variety of functions such as transmitting torque, reducing friction, adjusting angles, and transmitting signals and energy. Its structural design and use characteristics can effectively meet different assembly needs and improve the performance and reliability of mechanical assembly.