Common CNC lathe processing problems include but are not limited to the following:

1. Tool wear: CNC lathe tools will wear after long-term use, resulting in increased cutting force, reduced processing quality, and even tool breakage.

2. Workpiece clamping problem: CNC lathe workpiece clamping is not firm or the fixture design is unreasonable, which will cause the workpiece to shift, vibrate or deform, affecting the machining accuracy and surface quality.

3. Improper setting of processing parameters: Unreasonable setting of CNC lathe cutting speed, feed speed, cutting depth and other parameters may lead to poor processing quality, increased tool wear and other problems.

4. CNC program errors: CNC program writing errors or parameter setting errors can lead to abnormal machine tool operation, processing deviations or processing failures.

5. CNC system failure: CNC system hardware or software failure will cause the machine tool to fail to work normally or the processing quality to decline.

6. Tool collision: CNC lathe tool collision with the workpiece or fixture may cause damage to the tool, machine tool parts, or even serious accidents.

7. Poor machine tool lubrication: Poor lubrication of CNC lathe guide rails, bearings and other components will increase friction and affect the accuracy and life of the machine tool.

8. Electrical system problems: Failure of electrical components and poor wiring of CNC lathes will affect the stability and safety of the machine tool.

9. Cooling system failure: Problems such as coolant pump and pipeline blockage will cause the cutting temperature to be too high, affecting the processing quality and tool life.

10. Mechanical structure problems: Looseness, deformation and other problems in the mechanical structure of the machine tool will affect the processing accuracy and stability.

11. Human error: Misoperation or improper operation by CNC lathe operators may lead to machine tool failure or safety accidents.

Solving these problems requires timely maintenance, reasonable operation and management, and professional technical support. Regular maintenance and equipment inspections can help prevent problems and improve the reliability and stability of machine tools.