Y3180CNC4 wide speed gear hobbing machine with multi head high-speed rolling cutters, efficient and powerful. This machine has fault diagnosis function, which is convenient for troubleshooting and reduces maintenance standby time. Due to the shortened transmission route and reduced transmission chain errors, $r $n can be fed once or multiple times according to the large or small module of the machined gear. With the use of a two-stage rolling cutter and reasonable material and process operation procedures for the workpiece being machined, its precision machining accuracy can reach level 7 accuracy according to GB/T10095-2001 "Precision of Involute Cylindrical Gears".