Hypoid gears are now modeled in 3d CAD with Excel software from spiralbevel.com
Ideal tooth contact pattern for smooth operation.
Reduction of undercut for higher torque.
Tooth geometry for faster machining. Ring gear tooth can be cut on 3 axis with an indexing table by a fly cutter. Or gear tooth can be cut on a gear cutting machine without rolling. The mating pinion is cut on 5-axis CNC from 3d CAD model.
Tooth contact pattern visualization in 3d.