linear guide

Linear guide pair is a key basic functional component used in the field of mechanical engineering to achieve high-precision, high rigidity, low friction, and long-life linear motion. It is essentially a precision guidance system, typically composed of two main parts: linear guides and sliders.

1、 Definition and Working Principle

Rolling linear guide pair is a precision guiding device widely used in various mechanical equipment.

Structurally speaking, it mainly consists of components such as guide rails, sliders, balls or rollers, and retainers. The guide rail is usually made of high-strength steel, which has undergone precision machining and heat treatment, and has high hardness and wear resistance. The slider is installed on the moving parts that need to be guided, and it is equipped with a raceway inside to accommodate balls or rollers. Ball or roller bearings are evenly distributed under the action of the cage, and they can perform rolling motion between the guide rail and the slider.

Its working principle is based on rolling friction. When the slider is subjected to external force, the ball or roller rolls in the raceway of the guide rail and slider. Due to the rolling friction coefficient being much smaller than the sliding friction coefficient, the slider can smoothly move in a straight line along the guide rail. This rolling motion not only greatly reduces friction, but also improves the flexibility and response speed of the motion.

Rolling linear guide pairs have many significant advantages. It can provide high-precision guidance and meet the strict requirements of various precision equipment, such as CNC machine tools, automated production lines, etc. It has a high load-bearing capacity and can withstand loads from multiple directions, making it suitable for complex working environments. It also has good corrosion resistance and fatigue resistance, and can work stably for a long time under harsh conditions. In addition, the installation and maintenance of rolling linear guide pairs are relatively simple, which can effectively reduce equipment operating costs, improve production efficiency, and play a crucial role in modern industrial fields, effectively promoting the improvement of mechanical automation level.

2、 Application Fields

Widely used in transmission systems of various mechanical equipment to achieve motion positioning. Its main application areas include:

1. In the field of automotive components, such as steering mechanisms, power steering systems, electronic parking systems, braking systems, etc.

2. The field of CNC machine tools includes mid to low end machine tools, as well as robotic arms.

3. In the field of automated production lines, such as automated material transfer systems.

4. In the field of rail transit, such as subway door opening and closing systems, station track changing systems, etc.

5. In the aerospace field, such as aircraft flap opening and closing systems, aircraft servo fan opening and closing systems, etc.

6. The field of robotics, especially industrial robot joints, requires angle adjustment and positioning.

3、 Market and Trends

At present, the market size of rolling linear guide pairs is huge, but the technical barriers are high, and the market is mainly monopolized by foreign companies such as Japan and Europe. However, with the continuous breakthroughs in domestic enterprise technology and the improvement of mass production capabilities, there is a vast space for domestic substitution. In the future, with the increasing demand for machine tool performance and numerical control, the application proportion in the field of numerical control machine tools will further increase.

In summary, the rolling linear guide pair plays an important role in the field of mechanical equipment due to its high precision, high load-bearing capacity, low wear, adaptability to high-speed motion, and easy installation and maintenance, and demonstrates broad development prospects.