Worm drives - rubbing speeds etc

[mclearg]

Can anyone direct me to some formulae for worm drive design. I have a machinery's handbook somewhere but can I find it?!?!?!
Cheers,
Gordon.

Why do some things seem so plausible at the time ............and yet so idiotic in retrospect?

 

[BobM3]

This is a good starting point:

http://www.qtcgears.com/Q410/Q410Cat.htm