Method for processing spiral bevel gears on general six-axle numerically-controlled machine tool

The invention discloses a method for processing spiral bevel gears on a general six-axle numerically-controlled machine tool. The method includes connecting a standard facing cutter to a cutter spindle of the machine tool by a special cutter handle, fixing a gear workpiece to a C-axle turntable by a three-jaw chuck, and setting and starting electronic gear functions of the cutter spindle and a workipiece spindle to enable the facing cutter and the gear workpiece to do engaged unfolding motion to process gear faces. According to the method, modification to the machine tool is not needed, and only mounting of the cutter handle, and the facing cutter and a fixture which are acquired by processing of gears is needed to realize production of the spiral bevel gears in small or medium batch, so that processing cost is reduced, and good economic benefit is achieved.