The impact of the speed of CNC vertical lathe on processing is very significant. It directly affects cutting speed, surface quality, tool life and other aspects. Here are some of the main impacts:

1. Cutting speed: CNC vertical lathe speed is one of the main determinants of cutting speed. Higher rotational speed can increase cutting speed, thereby improving processing efficiency. However, too high a rotational speed may cause the tool to wear too fast or the cutting temperature to be too high, affecting the processing quality.

2. Cutting force: Changes in CNC vertical lathe speed will affect the magnitude and direction of the cutting force. Normally, higher rotational speeds will produce greater cutting forces, which may cause vibration and deformation during CNC vertical lathe processing, affecting CNC vertical lathe machining accuracy and surface quality.

3. Cutting temperature: The high speed of CNC vertical lathe will cause the cutting temperature to increase, which may affect the surface quality of the workpiece and accelerate the wear of the tool. Proper cutting temperature of CNC vertical lathe helps maintain processing stability and improve tool life.

4. Tool life: The choice of CNC vertical lathe speed directly affects the tool life. Proper rotational speed can reduce tool wear and help extend the service life of the tool. Too high or too low rotational speed may lead to reduced tool life.

5. Processing accuracy: The CNC vertical lathe speed also has a certain impact on the processing accuracy. Appropriate rotational speed can ensure processing accuracy and surface quality, while inappropriate rotational speed of CNC vertical lathe may lead to processing dimensional deviation or increased surface roughness.

6. Cutting stability: The appropriate rotation speed of CNC vertical lathe can improve cutting stability, reduce the occurrence of vibration and resonance phenomena, and is conducive to maintaining the processing quality and processing accuracy of CNC vertical lathe.

Therefore, in CNC vertical lathe processing, reasonable selection of rotation speed is crucial to ensure processing quality, improve processing efficiency and extend tool life. It is usually necessary to make reasonable parameter settings based on the specific processing materials, tool types, processing techniques and other factors of the CNC vertical lathe.