Lead screw guide is a high-precision linear transmission product, usually used in machine tools, semiconductor manufacturing devices, medical devices, industrial robots, automation equipment, 3C equipment, automobiles and other fields. Let's take a closer look at the relevant knowledge of the lead screw guide:
1. The function of the lead screw is to convert the rotating motion into a linear motion. According to the friction characteristics, the lead screw can be divided into the following types:
Trapezoidal lead screw: also known as sliding lead screw, tooth type is mostly trapezoidal, nut and lead screw shaft direct contact, sliding friction generated during movement.
Ball screw: The ball is placed between the screw and the nut as an intermediate transmission body, which produces rolling friction when moving. Ball screw has become a mainstream product because of its high transmission efficiency and long life.
Planetary roller screw: Threaded rollers are arranged around the main screw screw, which has high rigidity and load bearing capacity, but it is difficult to manufacture and has few commercial applications.
2. The function of the guide rail is to support the moving component and make it move in the specified direction. Guide rail is divided into the following types:
Sliding guide rail: through sliding friction movement, simple structure, good stiffness, suitable for low precision heavy cutting.
Rolling guide rail: installation of rolling elements (such as ball, roller and needle roller), small friction coefficient, fast response speed, suitable for high-precision, high-speed light processing.
Hydrostatic guide rail: The moving parts float through the pressure oil, the friction coefficient is very small, but the manufacturing cost is high and the application is few.
3. Precision classification:
Lead screw: According to the national standard, the accuracy is divided into P0 to P10, of which P0 has the highest accuracy. Lead screws higher than P5 are suitable for high precision CNC machine tools and other fields.
Guide rail: Accuracy is divided into ordinary, advanced, precision, ultra-precision and ultra-precision. Higher than the precision level of the guide rail is mainly used in high precision CNC machine tools, precision measuring instruments and other fields.
In short, lead screw guides play an important role in the industrial field, ensuring the high-precision positioning and movement of mechanical equipment.
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