Automatic replacement device for machine tool milling head

The invention relates to the field of machine tool accessories, in particular to a machine tool milling head automatic replacement device which comprises a fixing base, a storage mechanism is rotationally installed at the top of the fixing base, and a taking mechanism and a guide frame are installed at the top of the storage mechanism. And a driving motor IV for driving the storage mechanism to rotate and a fixing mechanism for fixing the storage mechanism are mounted on the fixing seat. The replacement area, the new storage area and the old storage area are arranged on the same straight line, the two ends of the clamping assembly are located on the replacement area and the new storage area correspondingly, when the milling head is replaced, after the old milling head is placed in the replacement area, one end of the clamping assembly clamps the new milling head, and the other end of the clamping assembly clamps the old milling head; and then the transverse moving assembly drives the clamping assembly to move