The vertical CNC lathe is a CNC vertical lathe specially used for cutting and forming disc-shaped workpieces. To ensure that the vertical CNC lathe used for cutting and forming large and small discs has good quality, high precision and fast cutting speed, the following aspects need to be considered:

1. Machine tool quality: Choose high-quality machine tools produced by reliable manufacturers. This often involves the use of high-quality materials and advanced manufacturing processes to ensure the stability and durability of the machine tool.

2. Control system: CNC systems are crucial to improving accuracy and efficiency. Advanced CNC systems can provide more precise motion control and more complex cutting path planning. Make sure to choose a lathe with a reliable CNC system.

3. Tool system: Choose a high-performance tool system, including reliable tool holding devices and tools suitable for different cutting tasks. This helps ensure cutting stability and tool life.

4. Spindle speed and power: Higher spindle speed and power can increase the cutting speed, thereby shortening the processing time. Make sure the lathe's spindle is designed to meet the required cutting speed.

5. Automation functions: Some advanced CNC lathes have automation functions, such as automatic tool change, automatic measurement and compensation, automatic unloading, etc. This helps increase productivity and reduce human errors.

6. Cooling system: An effective cutting cooling system can ensure the stable temperature of the workpiece and tool during high-speed cutting. This helps prevent thermal distortion and extends tool life.

7. Quality control: Quality control measures during the production process are key to ensuring the accuracy of the finished product. Lathes may be equipped with automatic measurement systems and the ability to monitor and adjust in real time for deviations that may occur during production.

8. Maintainability: Consider the maintainability of the equipment, including designs that make it easy to repair and replace parts. This reduces downtime and increases equipment reliability.

When choosing a vertical CNC lathe for large or small plate cutting and forming, it is best to communicate in detail with the manufacturer or supplier to understand the equipment's technical specifications, performance parameters, service and support, etc. The use of vertical CNC lathes for cutting and forming large and small discs is designed to improve production efficiency, precision and consistency, and is especially suitable for the production of large disc-shaped workpieces. If you have more specific questions about a specific model of CNC vertical lathe or a specific cutting and forming process, you are welcome to provide more details and I will try to provide more accurate assistance.