CNC vertical lathes and CNC turn-milling composite machines are two different types of machine tools, and they have some differences in structure and function. The following are the main differences between CNC vertical turning and CNC turning and milling:

1. Structure type:
CNC vertical lathe: CNC vertical lathe is a vertical lathe in which the workpiece is fixed on the spindle and the cutting tool performs cutting processing on the moving axis. It is suitable for turning shaft parts, gears, etc.
CNC turn-mill combination: CNC turn-mill combination is a machine tool that combines the functions of a lathe and a milling machine, and has the capabilities of both turning and milling. It can perform turning operations through the rotation of the spindle, and can also perform milling operations through the movement of the workbench and tool.

2. Processing method:
CNC vertical lathe: CNC vertical lathe mainly performs cutting processing through the rotation of the spindle and the clamping of the workpiece. It is suitable for processing axisymmetric parts, such as hubs, gears, shafts, etc.
CNC turn-mill combination: CNC turn-mill combination has the functions of a lathe and a milling machine, and can perform turning, milling and drilling operations. It is suitable for processing complex-shaped parts, such as curved surfaces, grooves, holes and edges.

3.Functional flexibility:
CNC vertical lathe: CNC vertical lathe focuses on turning operations, focusing on the processing of axially symmetric parts, such as outer circles, inner circles, end faces, etc. It has the advantages of high precision and high efficiency in turning.
CNC turning and milling combination: CNC turning and milling combination combines the functions of turning and milling, and can flexibly respond to different processing needs. It has more cutting freedom and can achieve more complex contour machining and surface machining.

In general, there are differences in structure type, processing method and functional flexibility between CNC vertical turning and CNC turning and milling composite. Choosing the right machine tool depends on the specific machining needs and workpiece characteristics. CNC vertical lathes are suitable for high-precision turning of axially symmetrical parts, while CNC turning-milling hybrids are suitable for processing complex-shaped parts with multiple cutting operations.