The turning speed of CNC vertical lathe is mainly determined by factors such as workpiece material, tool type, cutting depth, feed speed and spindle speed. High turning speed helps improve production efficiency and processing quality, but it needs to be selected within a reasonable range to avoid problems caused by excessive speed. The following are some factors that affect CNC vertical lathe turning speed:

1. Workpiece material: Different materials for CNC vertical lathe have different hardness and cutting performance, and have different requirements for turning speed. Typically, harder CNC vertical turning materials require lower turning speeds, while softer materials can use higher turning speeds.

2. Tool types: Different types of CNC vertical lathe tools are suitable for different processing tasks, such as rough turning tools, fine turning tools, threading tools, etc. Choosing the right type of tool for CNC vertical turning can help achieve higher turning speeds.

3. Cutting depth: CNC vertical lathe cutting depth refers to the thickness of each cutting tool. Larger cutting depths usually require lower turning speeds to ensure a stable cutting process and avoid excessive cutting heat.

4. Feed speed: CNC vertical lathe feed speed refers to the distance the tool moves on the workpiece per minute. Appropriate feed speed can affect the cutting effect and surface quality. CNC vertical lathe high-speed feed usually requires higher turning speed.

5. Spindle speed: The spindle speed of CNC vertical lathe is an important parameter in CNC vertical lathe. Different spindle speeds are suitable for different types of cutting tasks. CNC vertical lathe high-speed spindle is usually suitable for light load and high-speed cutting.

6. Cooling system: The effective cooling system of CNC vertical lathe can help control the temperature of the cutting area, making higher turning speeds possible. CNC vertical lathe cooling system helps extend tool life and improve machining quality.

When determining the CNC vertical lathe turning speed, cutting tests are usually required to ensure that the processing quality is not affected while maintaining efficient production. At the same time, CNC vertical lathe operators should adjust the turning speed according to the actual situation to ensure a safe and stable processing process.