basically there is no difference. The four axis is divided into four axis linkage, and the three-axis semi linkage numerical control indexing plate is the three-axis semi linkage numerical control indexing plate, which milling operation can be controlled by external numerical control

the fourth axis can be linked, and the indexing disc is independent of the system

strictly speaking, the fourth axis comes…

1. After networking, production tasks can be distributed through the network

2. NC programs can be called on the network

3. Centralized and scientific management of NC programs

4. The running state of NC machine tools can be monitored through special software

5. Of course, it can also be developed into an unmanned chemical plant

with simple networking, a computer can be set up as a server on a machine tool with a network card to distribute and share programs…