A CNC vertical lathe is a CNC machine tool mainly used for processing axially symmetrical parts, usually long and thin workpieces. Its characteristics include:

1. Vertical structure: The spindle of a CNC vertical lathe is perpendicular to the work surface. The workpieces of a CNC vertical lathe are usually processed along the axis of the spindle, making it suitable for processing long and thin axially symmetric parts.

2. CNC system: CNC vertical lathes are equipped with CNC systems that can accurately control cutting parameters during processing, such as cutting speed, feed speed, cutting depth, etc., to achieve high-precision processing.

3. Automation functions: CNC vertical lathes are usually equipped with automation functions, such as automatic tool changing systems, automatic measuring devices, etc., which can improve production efficiency and processing accuracy.

4. Multi-functional processing: CNC vertical lathes have a variety of processing functions, including turning, boring, drilling, tapping, etc., which can meet the processing needs of various axially symmetric parts.

Parts suitable for processing include but are not limited to:

1. Shaft parts: such as shafts, bushings, bearings, etc.;

2. Long rod parts: such as threaded rods, guide rods, etc.;

3. Cylindrical parts: such as pipe fittings, shaft-shaped parts, etc.

In general, CNC vertical lathes are suitable for processing parts that require high precision and axial symmetry, and are especially suitable for processing long and thin workpieces.