The 4th axis is also called as the CNC indexing head of CNC machine, which is a machine tool accessory that clamps the workpiece on the chuck or between the two centers, and makes it rotate, index and position. The advantage of adding the 4th axis to the machine is that it can make the plane of the tool machining more extensive, and can reduce the repeated clamping of the workpiece, improve the overall processing accuracy of the workpiece, and help simplify the process and improve the production efficiency.

Specifically, the 4 Axis CNC Router Machine can complete the tasks that the 3 Axis CNC Router Machine cannot complete at one time. It can realize multi-sided processing of the product through rotation, which greatly improves the machining efficiency and reduces the number of clamping, shorten production time.