Profile Modifications for Gear Hobs

Profile Modifications for Gear Hobs

The purpose of the profile modification is to reduce or avoid the interference when the teeth roll into mesh while a gear pair is running under load, 

To decide on the basic profile of the hob, the complete tooth cutting data or workpiece drawing are necessary. 

The size of the profile modification produced depends, similarly  as with tip edge chamfer, on the number of teeth.