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Ball screw is used in many mechanical and automation equipment. There are many cases where the ball screw is used on the module. What is a linear module? The linear module is a linear actuator and there are two main ways. One is composed of a ball screw and a linear guide, and the other is composed of a timing belt and a timing pulley. The linear module has a wide range of use, convenient installation and high precision, which is accepted by the majority of users! It saves the specific link of the structure of making linear motion.
Ball screw is the ideal product to convert rotary motion into linear motion or to convert linear motion into rotary motion. The TBI ball screw consists of a screw, a nut and a ball. Its function is to transform the rotary motion into linear motion, which is the further extension and development of the ball screw. The significance of this development is to change the bearing from rolling action to sliding action. Ball screws are widely used in a variety of industrial equipment and precision instruments due to their low frictional resistance.
Ball screw is the most commonly used transmission component in machine tools and precision machinery. Its main function is to convert rotary motion into linear motion, or to convert torque into axial repetitive force, with high precision, reversibility and high. The characteristics of efficiency. The ball screw is also called a ball screw and a ball screw.
The main linear module features of the ball screw in the module are as follows:
1) High positioning accuracy
The ball screw pair realizes the rolling friction between the nut and the screw rod by the ball rolling method. The movement of the rolling linear guide is realized by the rolling of the steel ball, the frictional resistance of the guide rail is small, the difference of the static and dynamic frictional resistance is small, and the crawling does not occur at low speed. . Repeated positioning accuracy is suitable for moving parts that are frequently activated or reversed.
2) Small wear
The rolling contact has a small frictional energy consumption, and the friction loss of the rolling surface is also reduced accordingly, so that the rolling linear guide system can be in a high-precision state for a long time. At the same time, the use of lubricating oil is also very small, which makes it very easy to design and use the lubrication system of the machine tool.
3) High life
The ball screw pair nut, the hardness of the screw rod reaches HRC58-62, the ball hardness reaches HRC62-66, and the rolling friction between them, so it can achieve higher fatigue life and precision life.
4) Adapt to high speed sports
Since the module using the rolling linear guide has small frictional resistance, the required power source and the power transmission mechanism can be miniaturized, and the driving torque is greatly reduced. High-speed linear motion can be realized to improve the working efficiency of the machine tool
5) Strong carrying capacity
The rolling linear guide has good bearing capacity and can withstand forces and moment loads in different directions, such as the forces acting in the up, down, left and right directions, as well as the jolting, shaking and oscillating moments. Therefore, it has good load adaptability.
6) Easy to assemble and interchangeable
The ball screw is interchangeable with the rolling guide, and the module can be regained high precision by replacing the slider or the guide rail or the entire rolling guide pair.
7) Micro and high-speed feed can be realized
The ball screw pair does not produce a sliding phenomenon, and can realize micro-feed; the linear module configuration can achieve micron-level feed as long as the feed pulse is small enough. Moreover, since the ball screw has a low heat generation and can manufacture a large lead screw, high-speed feed can be realized.