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Intermittent motion

  1. Feb 2, 2010 #1
    Does anyone know of a cheap mechanical device which is able to achieve specific intermittent / discrete motion along a shaft?
  2. jcsd
  3. Feb 2, 2010 #2


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    Staff: Mentor

    What kind of motion? Like a crawling motion? How fast? can the shaft have threads, or does it need to be smooth?

    I remember a linear motor mechanism that I read about once that could move on a smooth shaft because it had two gripper mechanisms (one at each end), and an extension capability in the middle. I forget what the application was, though.
    Last edited: Feb 2, 2010
  4. Feb 2, 2010 #3


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  5. Feb 14, 2010 #4
    I'm trying to rotate a shaft 60 degrees every 30 seconds; right now I'm looking into some sort of toothed gear / ratchet powered by a linear solenoid actuator... I'm still working on figuring out the details but it could work.

    do you guys agree with that or should I be looking at something else ??
  6. Feb 14, 2010 #5


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    Which is it?
  7. Feb 14, 2010 #6
    Sorry, I meant to say the latter in the original post (I can't update it for some reason)
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