High-precision CNC machine tools refer to CNC machine tools that can achieve high-precision machining. Here are some features and information about high precision CNC machine tools:

1. High-precision positioning and repeat positioning accuracy: High-precision CNC machine tools can achieve high-precision positioning and repeat positioning accuracy by using key components such as precise transmission systems, high-precision guide rails and bearings. This means that the machine tool can precisely control the position of the tool and the workpiece during the machining process, ensuring the accuracy and consistency of the machining dimensions.
2. High rigidity and stability: High-precision CNC machine tools usually adopt rigid and stable machine tool structure design and materials, as well as advanced vibration compensation and suppression technology, which can provide sufficient rigidity and anti-vibration capability. This helps reduce cutting vibration and deformation, and improves machined surface quality and dimensional accuracy.
3. High-resolution CNC system: The high-precision CNC machine tool is equipped with a high-resolution CNC system, which can realize fine axis motion control and contour control. These CNC systems usually have high-speed data transmission and feedback loops, which can monitor and adjust the movement of machine tools in real time to ensure the accuracy and stability of machining.
4. High-speed processing capability: High-precision CNC machine tools usually also have high-speed processing capability, which can achieve higher processing efficiency while maintaining high precision. This is achieved by adopting technical means such as high-speed spindle, high-speed servo system and fast tool change.
5. Automation and intelligent functions: High-precision CNC machine tools usually also have automatic and intelligent functions such as automatic tool change, automatic workpiece clamping, and adaptive adjustment of processing parameters. These features increase productivity, reduce human intervention and operator errors, while also providing greater process consistency and stability.

It should be noted that high-precision CNC machine tools usually have a high technical threshold and high cost. When choosing a high-precision CNC machine tool, it is necessary to comprehensively consider factors such as machining accuracy, production efficiency, and cost based on specific processing requirements, workpiece materials, and size requirements, and to fully communicate and understand with suppliers.