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Study of worm-worm drive 2




Input: small worm, 1 start, lead: t1, pitch diameter: D1

Output: large worm, 2 starts, lead: t2 = 2.t1, pitch diameter: D2 = 2.D1. It has prizmatic joint with the base.

The output moves t1 in 1 rev. of the input.

The output can be of circular grooves in stead of thread.

The large worm can be replaced with a rack (like in adjustable spanners).

If the large worm has cylindical joint with the base, the output motions (linear and rotary) are unstable.



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