CNC10 DRO Calibration

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rexcsmith
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CNC10 DRO Calibration

Post by rexcsmith »

I have discovered that my DRO is off. Using a dial indicator, I find that moving 1" in the x axis yields 1.006" on the DRO. That's a pretty significant error.
Can someone point me to a procedure in CNC 10 for calibrating the DRO?

thanks much, rex
tblough
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Re: CNC10 DRO Calibration

Post by tblough »

Cheers,

Tom
Confidence is the feeling you have before you fully understand the situation.
I have CDO. It's like OCD, but the letters are where they should be.
martyscncgarage
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Re: CNC10 DRO Calibration

Post by martyscncgarage »

Make sure you are using a standard with known dimension when setting up.
Attached is a Fine DRO calibration process. Its newer but should work for you, along with the Tech bulletin Tom Provided.

Marc Leonard's process for setting up backlash comp can be found here AFTER you have done the Fine Tuning process:
http://www.cncsnw.com/Lashhowto.htm
Attachments
Centroid Fine DRO Adjustment.pdf
(459.51 KiB) Downloaded 84 times
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rexcsmith
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Re: CNC10 DRO Calibration

Post by rexcsmith »

Thanks for the quick reply. I'm curious about Marc's backlash adjustment. Why is it necessary to run the table back and forth multiple times? It seems like one time should tell the tale. I still consider myself a novice, so I'm interested in what the difference might be.
martyscncgarage
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Re: CNC10 DRO Calibration

Post by martyscncgarage »

rexcsmith wrote: Thu Jul 15, 2021 11:40 am Thanks for the quick reply. I'm curious about Marc's backlash adjustment. Why is it necessary to run the table back and forth multiple times? It seems like one time should tell the tale. I still consider myself a novice, so I'm interested in what the difference might be.
It visually shows you the backlash. Just run it and you will understand. The difference between each back and forth move is your backlash value to enter into the CNC12 software
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cncsnw
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Re: CNC10 DRO Calibration

Post by cncsnw »

Because of any number of mechanical imperfections, any one out-and-back move is not necessarily going to return exactly like every other.

You run a cycle with repetitive moves so that you can get a good average value, and so that you can see just how much variation there is from one move to another.
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