Tutorial:Modeling a helical gear in Catia V5.
Tutorial: Modeling a helical gear in Catia V5
Answered with a tutorial: https://grabcad.com/tutorials/tutorial-modeling-a-helical-gear-in-catia-v5
Perhaps you prefer insert gears from standard parts in internet or other CAD software due to its difficult to design them in CATIA. Aided this application you could parametric design some of common gears (spur, helical, bevel, internal, rack and worm)
You can free download this app in the following link (0.9 MB)