A CNC vertical machining center (VMC) with a rotary table is a type of computer numerical control (CNC) machine tool that is capable of performing a wide range of machining operations on a vertical plane, with an additional rotary table feature. The rotary table is a 4th axis of the machining center, which is typically mounted on the bed of the machine, parallel to the X-Y plane.

The rotary table allows for the workpiece to rotate about a fourth axis, perpendicular to the X, Y, and Z axes. This allows for multi-sided machining of the workpiece, as well as increased precision and accuracy, and often reduces the need for multiple setups. Rotary tables also allow for machining of round parts such as shafts, gears and other cylindrical components. They are typically indexed in degrees, allowing for precise positioning and cutting at different angles.

The VMC with rotary table can be used to perform a wide range of operations such as milling, drilling, tapping, and boring, as well as more complex operations like multi-axis contouring and helical interpolation. This machine can handle a wide range of materials such as metals, plastics, and composites and is used in many industries such as aerospace, automotive, and medical, where high precision and accuracy is required.

This machine is capable of working on multiple sides of the workpiece, reducing the number of setups and improving efficiency. It can be used for turning and milling operations, it is capable of creating parts with a high level of accuracy, and it is also capable of working on both large and small parts.