There are many factors in machine tool processing that affect the accuracy of processing. Here are some common factors:

1. Machine tool rigidity: The rigidity of a machine tool refers to the machine tool's ability to resist deformation during work. The higher the rigidity of the machine tool, the less deformation occurs during processing, which can improve the accuracy of processing.
2. Cutting tool and tool wear: Cutting tool and tool wear can cause dimensional changes and surface quality degradation during machining. Check and replace cutting tools regularly to ensure proper operation and good cutting performance.
3. Workpiece clamping and positioning: The clamping and positioning of the workpiece during processing is very important. Insufficient clamping force or inaccurate positioning will cause vibration and displacement of the workpiece during processing, affecting processing accuracy.
4. Cutting parameters: The selection of cutting parameters such as cutting speed, feed rate and cutting depth has an important impact on machining accuracy. Reasonable selection of cutting parameters can reduce cutting force and thermal deformation and improve machining accuracy.
5. Cooling and lubrication: Proper cooling and lubrication can reduce friction and thermal deformation during cutting, reduce changes in workpiece size, and improve surface quality.
6. Process stability: A stable process can reduce fluctuations and changes in the processing process and improve the consistency and precision of processing. Including stable cutting parameters, stable cutting fluid supply, stable workpiece clamping, etc.
7. Environmental factors: Environmental factors such as temperature, humidity and vibration will affect the machining accuracy of machine tools. Maintaining proper environmental conditions, such as temperature control and vibration pads, helps maintain process stability and precision.
8. Operation technology: The technical level and experience of the operator have a great influence on the processing accuracy. Skilled operators can reasonably control the cutting process, accurately operate the machine tool, and improve the machining accuracy.

These factors are one of the main factors affecting the machining accuracy of machine tools. Comprehensive consideration and reasonable control of these factors can improve the machining accuracy of machine tools.