The machining accuracy of CNC lathes is affected by many factors, including the following aspects:

1. CNC system accuracy: The accuracy of the CNC lathe CNC system directly affects the processing accuracy, including the positioning accuracy, interpolation accuracy, feedback accuracy, etc. of the CNC system. A high-precision CNC system can control the movement of machine tools more accurately and improve processing accuracy.

2. Structural accuracy of machine tools: The structural rigidity, guide rail accuracy, spindle bearing accuracy, etc. of the machine tool will all affect the processing accuracy. Machine tools with higher structural rigidity and better guide rail accuracy will usually have higher machining accuracy.

3. Tool accuracy: The geometric accuracy, edge quality, tool wear, etc. of CNC lathe tools will affect the processing accuracy. Choosing the right tool and keeping the tool in good condition are crucial to ensuring machining accuracy.

4. Workpiece material and shape: CNC lathe workpieces of different materials and shapes have different requirements for machining accuracy. Usually, workpieces with high hardness and stiffness require higher machining accuracy.

5. Cutting parameters: The selection of CNC lathe cutting speed, feed speed, cutting depth and other cutting parameters will directly affect the machining accuracy. Reasonable cutting parameters can ensure stability and accuracy during the machining process.

6. Tool compensation: Using CNC lathe tool radius compensation, tool length compensation and other functions, you can correct the geometric error of the tool and improve the accuracy of processing.

7. Process equipment: Auxiliary equipment such as tool measurement systems, machining fluid supply systems, etc. will also affect the accuracy of processing. The precision and stability of these equipment are very important to ensure the accuracy of the machining process.

8. Environmental factors: Temperature, humidity, vibration and other factors in the CNC lathe processing environment will also affect the processing accuracy. A good processing environment is conducive to improving processing accuracy and stability.

CNC lathes can effectively improve the processing accuracy of CNC lathes by comprehensively considering these factors and taking corresponding measures.