Accuracy of robotic positioning systems

  1. Dec 8, 2013 #1

    iii

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    Hi friends, I search after examples or videos or names of robots or machines that work in a very accurate scale something like one millimeter of accuracy or better accuracy, so if you know about a robot or machine that work very accuracy so I will glad if you can write this in this thread.
     
  2. jcsd
  3. Dec 9, 2013 #2

    mfb

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    2015 Award

    Staff: Mentor

    One millimeter accuracy where?

    There are positioning systems that reach nanometer precision (google "piezo positioning system"), but they will never move something across a room because they can just move by some centimeters, and usually they cannot handle heavy loads.
     
  4. Dec 11, 2013 #3
    If you are asking about "industrial robots" then those devices are not considered to be accurate. They are repeatable to a taught point to a small tolerance (as little as plus/minus 0.010 mm).

    A discussion of the topic of industrial robot accuracy vs. repeatability is here.

    http://www.robot-forum.com/robotforum/fanuc-robot-forum/robot-repeatability-1550/msg5965/#msg5965

    If you are asking about those little motorized gizmos that run around the house, lab, yard, or battlefield...well, never mind.
     
  5. Dec 11, 2013 #4

    Bandit127

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    Gold Member

    CNC lathes for cutting optics typically have an axis resolution of around 7 nanometers.

    Repeatability is somewhat higher than that (mostly due to temperature effects) but can be 20 nanometers.
     
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