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The linear accuracy of a precision piston rod refers to its ability to maintain its linear position during motion, that is, whether it can move in an accurate linear manner according to a predetermined trajectory during motion. This parameter is usually expressed in micrometers or submillimeters and is used to measure the position control accuracy of precision piston rods.
Linear accuracy is a crucial parameter, especially for applications that require high-precision position control, such as CNC machine tools, precision instruments, semiconductor manufacturing equipment, etc. In these applications, the precision piston rod needs to be able to move in a very accurate manner to ensure that the processing, measurement, or positioning of the workpiece can be carried out in an accurate position.
Linear accuracy is influenced by various factors, including the manufacturing quality of precision piston rods, the accuracy of guidance systems, and the performance of lubrication and hydraulic systems. To ensure high linear accuracy, the following measures are usually taken:
1. Manufacturing accuracy: Its manufacturing must have a high degree of geometric accuracy to ensure uniform diameter, smooth surface, and straightness.
2. Guiding system: It usually maintains linear motion through guiding bearings or guiding sliders, and these guiding elements need to have high accuracy to ensure its stable linear motion.
3. Lubrication: Proper lubrication and lubrication system design can help reduce friction and wear, and improve linear accuracy.
4. Control system: Adopting a precise position control system, such as a CNC controller, to ensure accurate movement of the precision piston rod according to the required trajectory.
Linear accuracy is usually verified through measurement and calibration to ensure that it meets accuracy requirements in practical applications. If the linear accuracy does not meet the requirements, calibration, maintenance, or component replacement may be necessary to ensure the performance and reliability of the system.