CNC rotary tables can be divided into the following types according to their working principles, structures and functions:

1. Rotary Table: The rotary table is the most basic form of CNC rotary table, which is used to realize the horizontal rotation of the workpiece. It usually consists of a rotating platform and a drive device, and the rotation angle and speed can be controlled by the CNC system.

2. Tilt Rotary Table: The tilt rotary table can not only rotate horizontally, but also tilt vertically. It can achieve precise positioning and processing of workpieces in multiple axes.

3. 5-Axis Rotary Table: The 5-Axis Rotary Table has a higher degree of freedom and can realize the rotation, tilt and angular movement of the workpiece in multiple directions. It is often used for the processing of complex curved parts or multi-step processing.

4. Universal Rotary Table: The universal rotary table can realize the rotation and tilt of the workpiece in the horizontal and vertical directions, with greater flexibility and versatility. It is suitable for various processing needs and can achieve high-precision positioning and processing.

These are just some common types of CNC rotary tables. Depending on the specific application and requirements, there are other special types of CNC rotary tables, such as large-size rotary tables, high-speed rotary tables, thin rotary tables, etc. Choosing a suitable CNC rotary table needs to be determined according to the specific processing requirements and machine tool equipment.