Posted by Bill S on April 25, 2005 at 14:06:12:
In Reply to: worm and worm gear mesh problem posted by Charley on April 15, 2005 at 13:30:48:
Charley,
Based on the dimensions in your posts, the addendum for each is 0.0135, assuming the addendums are equal. The number of worm starts must be 4, right? If that's the case, the axial pitch is 0.04587 for 16Deg 7 min Helix angle, the over pin measurement of the worm (for 20Deg PA) should be 0.23360 over (3) 0.02351 dia pins, nominal not allowing for backlash.