Gear hobbing machine is the most widely used machine tool in gear processing machine tools, which can cut spur and helical cylindrical gears, as well as worm gears and sprockets. A gear processing machine that uses hobbs to process spur, helical, and herringbone cylindrical gears and worm gears by the development method. This machine can also machine a wide range of workpieces with special tooth profiles, such as splines and sprockets, using special hobs. The machining accuracy of ordinary gear hobbing machine is 7~6 grade (JB179-83), and the high-precision gear hobbing machine is 4~3 grade. The maximum processing diameter is up to 15 meters.

