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Measure Concentricity

acgarcia
Hello:

We purchased an optiv 321 to inspect plugs in our plug cell. I haven't attended training yet, not sure if i'll be going or if someone else is. Machine is still in the box, waiting for Hexagon for the install and setup date. Vision was added to my offline seat today so I have been checking out the new features.

My part is cylindrical so it will be inspected on its side. My print has some concentricity callouts and I was wondering how am going to obtain this measurement. So if I have a cylinder on its side, I can get the diameter of it by measuring a line on 1 side and another line on the other side and get the distance between those to lines, correct? Seems to pretty straightforward. If that feature is a cylinder, how can I check to see if it concentric with the rest of the part if I can only view the part in 1 direction?
  • Did you get the 321 GL or the 321 GLtp?

    Concentricity works in 2 axis'. If you lay the part down, you will only be capturing one axis. If you got the tp version, the way you could go about it would be to build a star probe and come at it from the side. If you have the 321 GL, then it can't be done unless you were to capture the deviation of one axis, multiple it by 2, and report that out as concentricity, but that is not accurate.
  • Did you get the 321 GL or the 321 GLtp?

    Concentricity works in 2 axis'. If you lay the part down, you will only be capturing one axis. If you got the tp version, the way you could go about it would be to build a star probe and come at it from the side. If you have the 321 GL, then it can't be done unless you were to capture the deviation of one axis, multiple it by 2, and report that out as concentricity, but that is not accurate.

    its the 321GL tp.

    That is what I figured, I'd have to use a combination of the touch probe and vision to get all the measurements, Thanks for the reply.
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