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Accuracy of robotic positioning systems

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#1
Dec8-13, 07:51 PM
P: 38
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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mfb
#2
Dec9-13, 09:04 AM
Mentor
P: 11,819
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.
tygerdawg
#3
Dec11-13, 06:58 AM
P: 156
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/robotforu...g5965/#msg5965

If you are asking about those little motorized gizmos that run around the house, lab, yard, or battlefield...well, never mind.

Bandit127
#4
Dec11-13, 11:38 AM
P: 189
Accuracy of robotic positioning systems

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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