Accuracy of robotic positioning systems

  • Thread starter iii
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  • #1
iii
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Main Question or Discussion Point

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.
 

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  • #2
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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.
 
  • #3
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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.
 
  • #4
Bandit127
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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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