Other than coming up with a manual for a gear hobber, I doubt if you are
going to find much info on the web. I checked a few texts and other
than a brief mention there is not a lot of info. Try ABE books for used
books on gears or gear making as such below

http://dogbert.abebooks.com/servlet/...%2Bhob%26x%3D0
http://dogbert.abebooks.com/servlet/...%2Bhob%26x%3D0

Bob Engelhardt wrote:
machineman wrote:

I think accuracy may be the root of some of these. Check out this site

http://easyweb.easynet.co.uk/~chrish/worms.htm


Yeah, that's one of the sites that shows a *hob-driven* blank. Actually,
I didn't see any sites with independently driven blanks. Googling
"synchronized gear hobbing" wasn't much help (production / machinery
sites mostly). Does anybody have a good link for synchronized gear
hobbing?

Bob