CNC vertical lathe is a kind of equipment that uses CNC technology to process workpieces. Its main advantages include high processing accuracy, high production efficiency and stable processing quality. The structure of the CNC vertical lathe is relatively complex, but it mainly includes the following parts:

1. Lathe bed: The lathe bed is the main structure of the CNC vertical lathe. It has the function of support and rigidity, providing a stable foundation for the entire machine tool.

2. Spindle box: The spindle box of a CNC vertical lathe is the core component of a CNC vertical lathe. It is mainly composed of a spindle, a spindle bearing and a main transmission device. The spindle box is usually made of cast iron, cast steel and other materials to ensure stability and rigidity. The CNC vertical lathe spindle is made of high-strength alloy steel and other materials, and the power is transmitted through the spindle drive motor to drive the tool for processing. The main function of the spindle box is to transmit cutting force and torque to ensure that the machine tool can achieve high-speed and high-precision processing.

3. Feed system: The CNC vertical lathe feed system is responsible for controlling the relative movement between the workpiece and the tool to ensure the smooth progress of the processing process.

4. Tool holder: The tool holder is an important part of the CNC vertical lathe for cutting. It consists of a base, a support mechanism and a cutting tool. The design and manufacturing quality of the tool holder directly affect the processing accuracy and efficiency.

5. Control system: The CNC vertical lathe control system is the "brain" of the CNC vertical lathe. It is responsible for receiving and processing instructions, and controlling the movement and processing process of the machine tool. Modern CNC vertical lathes usually use advanced CNC systems, which can realize complex machining tasks and automated operations.

In addition, CNC vertical lathes may also include automatic tool changing devices, automatic pallet changing systems, auxiliary systems, etc. to improve processing efficiency and automation. These systems can be configured according to specific needs and machine model.

It should be noted that different models of CNC vertical lathes may have slightly different structural compositions, but in general, the above components are the basic elements that constitute CNC vertical lathes. These components work together to enable CNC vertical lathes to complete various complex processing tasks and meet the needs of modern manufacturing.