Face gear transmission is a transmission pair composed of cylindrical gears and end face gears. The axis of the cylindrical gear intersects with the axis of the face gear, usually at 90 °. The driving gear has five axial forces and has the characteristic of large reduction ratio.Face gear is a key component of the new generation helicopter main reducer, and its torque balance and weight reduction effect in the helicopter main reduction torsion configuration is significantly superior to spiral bevel gears.The United States has successfully applied the new face gear to the main reducer of Apache helicopters, significantly improving combat skills.The team led by Director Xiaozhong Deng has worked hard for three years to master the core design and manufacturing technology of face gears. They have successfully developed face gear turning machines, grinding machines, and teeth surface error detection systems, forming a batch production capacity.

Turning teeth of orthogonal face gear