The refurbished Stanko gear shaper uses a NUM Axium Power CNC system to control all five axes. The gear shaper is currently being used to manufacture large internally cut gears for the wind turbine ...
"Compliments of the Fellows Gear Shaper Co., Springfield, Vermont, U.S.A." https://siris-libraries.si.edu/ipac20/ipac.jsp?&profile=liball&source=~!silibraries&uri ...
Invention of the gear-hobbing process about 150 years ago revolutionized not only gear fabrication, but also gear design. Basically, a hob or shaper cutter traverses the gear blank to generate teeth.