A double-head synchronous chamfering machine was designed to remove burrs, bulges and flanks from the end of bar rod in the fine machining process. In the facility, Siemens PLC 1214C was adopted as the control center to conduct communication with G120 inverter through PROFINET to control the spin speed of the workpiece’s two spindle milling cutters. The two-way guide screw’s rotation angle and speed were controlled through communication with the servo drive system, and then the synchronous reverse movements of the double egde chamfer facility was controlled to chamfer. The machine could check whether the workpieces are in place or not by the photoelectric switches installed on the two sides of the storage station. If everything was in the right place, the supply cylinder worked to begin the chamfer processing of bar rod. TP700 Comfort human-machine interface was adopted to conduct the two-way communications with PLC through PROFINET to set parameters for the system and perform the facility’〖KG-*2〗s working state on the interface.