A CNC (computer numerical control) vertical machining center is a type of machine tool that uses computer numerical control (CNC) to control the movement of the cutting tool. It is similar to a CNC lathe in that it uses precision and accuracy in the manufacturing process, but it is different in that it is designed to work with a stationary workpiece while a cutting tool moves along multiple axes.

A CNC vertical machining center typically consists of a cutting tool, a work table that holds the workpiece in place, and several linear axes (X, Y, and Z) that control the position of the cutting tool. The cutting tool is typically mounted on a spindle that is driven by a motor. The workpiece is held in place on the work table by a fixture or clamping mechanism.

The cutting tool can move along the X, Y, and Z axes, and can be programmed to move at specific speeds and feed rates to produce the desired shape. CNC vertical machining centers are able to perform a wide range of operations including milling, drilling, tapping, and boring.

CNC Vertical machining centers are widely used in the manufacturing process of various parts and components like aerospace, automotive, and many other industrial field for complex and precise parts, these machine can operate on variety of materials like plastic, wood, metal and alloys. Like other CNC machines, it is also programed by G-code.

Overall, CNC vertical machining center is a highly precise, automated machine tool which can perform multiple operations in a single setup and can work on 3D objects, which makes it a versatile and efficient machine for complex parts manufacturing.