CNC vertical lathes usually have high requirements for positioning accuracy. Positioning accuracy refers to the ability of a machine tool to accurately control the position of the workpiece or tool in space during processing to ensure that the processing results meet the design requirements. In CNC vertical lathes, the positioning accuracy is directly related to the dimensional accuracy, shape accuracy, surface quality and other factors of the workpiece.

The following are the reasons why CNC vertical lathes require higher positioning accuracy:

1. Complex parts processing: CNC vertical lathes are usually used to process larger, heavier, and complex-shaped workpieces. In this case, for different cutting surfaces and processing features, it is necessary to ensure the positioning accuracy of each part to ensure the accuracy of the overall workpiece.

2. Multi-process processing: Some parts require multiple processes for processing, and the accuracy of each process directly affects the quality of the final workpiece. The level of positioning accuracy will determine the alignment relationship between different processes, thereby affecting the quality of the final product.

3. High-speed cutting: CNC vertical lathes usually have high-speed cutting capabilities, and high-speed cutting puts forward higher requirements for positioning accuracy. In high-speed motion, positioning errors may be amplified, so higher positioning accuracy is required to maintain processing quality.

4. Small-sized parts: For some small-sized parts, the processing requirements are more stringent and require higher positioning accuracy to ensure the accuracy of small features and dimensions.

5. High-precision process requirements: Some application fields, such as aerospace, automobile manufacturing, etc., have extremely high requirements on the accuracy and quality of parts. The application of CNC vertical lathes in these fields needs to meet strict positioning accuracy standards.

In order to meet these requirements, CNC vertical lathes usually use advanced technologies such as high-precision guide rails, servo drive systems, and positioning sensors to ensure that the machine tool can accurately control the position of the workpiece and tool during operation. In addition, regular calibration and maintenance are also important measures to maintain high positioning accuracy of CNC vertical lathes.