THK ball screw manufacturers explain the circulation methods of ball screws

　　THK ball screw manufacturers: Two common circulation methods of ball screws

　　When using ball screws, there are situations where the ball screw is disengaged from use or remains in contact with use. These two situations are divided into two circulation methods, namely the commonly referred to inner circulation and outer circulation. In fact, inner circulation means that the balls always maintain contact with the screw, while outer circulation means that the balls lose contact with the screw. Below is a brief introduction to the two circulation methods of ball screws.

　　1. Internal Circulation

　　If it is an inner ring, it is mainly implemented through an inverter. Inverters are actually of two types: one is a cylindrical cam inverter, and the other is a flat oval inlaid block directional indicator. Compared with these two inverters, the latter is smaller, but the applicable environment requires higher precision, mainly higher requirements for the size of the outer profile of the inverter and the groove on the nut.

　　2. External Circulation

　　At the end of the ball circulation process, it returns to the ball screw nut for circulation through the spiral groove of the nut or sleeve. This circulation mainly includes the end cap, sleeve, and spiral groove. Among them, the sleeve technology is better, but the tube protrudes from the nut body, so the size is relatively larger. This external circulation structure has a much simpler manufacturing process and is widely used.

　　The circulation methods of ball screws are mainly internal circulation and external circulation. When choosing, it mainly depends on the requirements of the usage environment and the usage situations in each applicable scenario. The external circulation type has low cost, but the clearance of the raceway is not smooth enough, which still has a certain impact on the smooth performance of the ball raceway.

　　THK ball screw manufacturers: The main working principle of ball screws

　　Ball screw transmission has high efficiency and accurate positioning, and is a widely popular and favored transmission component in current industrial machinery production. As we all know, it mainly converts linear motion into rotary motion or rotary motion into linear motion, and the switching between the two is relatively safe and convenient. The main principle of the ball screw is to improve transmission efficiency and make positioning more accurate. The principle is described in detail below.

　　First, the original trapezoidal screw, that is, the commonly called screw mentioned above, has been basically replaced by the ball screw. The main reason is that the principle of the ball screw is that when the rotary motion is converted into linear motion or linear motion is converted into rotary motion, as a transmission component, it can both improve transmission efficiency and achieve accurate positioning.

　　Secondly, the corresponding linear motion can be quickly realized. For example, when the ball screw is used as the drive body, the nut can realize the conversion of the corresponding specifications according to the rotation angle of the screw. That is to say, in this case, the passive workpiece can be connected to the nut seat or nut to achieve the corresponding linear motion work. In the final analysis, the main principle of the ball screw is actually that it can quickly convert rotary motion into linear motion, and the switching between these two types of motion is relatively easy. And it can ensure accurate positioning during the switching between the two. As a transmission component, the ball screw has excellent efficiency and precision and can be used in many situations.

　　That's all for the introduction from THK ball screw manufacturers today. Thank you for watching.