Benny:
I remember reading an article somewhere about a type of zero backlash worm drive that uses the same principal as a ball screw. It's not that both gears have grooves. The two gears have teeth that mesh with a ton of backlash, then several sets of captive balls are run between the contact points of the teeth.
I know I read about this (The article had pictures) long, long ago; even before the World Wide Web. To be honest I think it was in the same article where I first heard of ball screws. It was in a "Popular Mechanics" or "Popular Science" type of magazine. I know when I read it I thought "This will never take off", but then again, I also said "This will never take off" the first time I saw a color computer!
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Patrick;
The Sober Pollock |