Such cnc gear hobbing machine has following features:

1. The radial feeding(X axis), axial feeding(Z axis), hob shifting (Y axis) are directly controlled by AC servo motors of their own, thus featuring in shout transmission chain, good transmission rigidity and high transmission accuracy. The control axis(W axis) of the differential drive mechanism is actuated by a servo motor without any need of differential change gears thus changing the conventional device mode completely and simplifying the mechanical drive structure as well.

2.The main drive is transmitted from a frequency-controlled motor, enabling the spindle to run at an infinitely variable speed within a range of 150 to 600rpm and at a cutting speed within a range of 70 to 120m/min. The main drive motor has a power of 11kW sufficient for heavy-duty cutting and high federate of a multi-start hob as well.

3.The major guideway pair is of rectangular shape with a big flat surface and is coated with Teflon. The drive is transmitted via ballscrews, thus featuring in good transmission rigidity, heavy load carrying capacity and high movement straightness. The radial rapid speed is up to 2.4m/min. and the axial rapid speed is up to 4m/min.