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Extracting Points From a Scan

rrowsam
Hey Guys,

So I'm writing a pretty large program that needs to check a bunch of contours. I think I can measure many of them with one scan.

However, for some reason instead of a profile call-out, I need to report X-Y and Size for a bunch of radii. Is there a way to extract the points from a scan and than construct features from those points?

Thanks!
-Robert
  • Hey Guys,

    So I'm writing a pretty large program that needs to check a bunch of contours. I think I can measure many of them with one scan.

    However, for some reason instead of a profile call-out, I need to report X-Y and Size for a bunch of radii. Is there a way to extract the points from a scan and than construct features from those points?

    Thanks!
    -Robert

    Theres a way... Use a scan and construct a circle from partial scan. It's called "Scan Segment".
  • I searched the help for "Scan Segment" and couldn't find anything. I can't find much info on the forum either. Sorry, I'm still fairly new to PC DMIS.

    This makes we wonder if I need to ask a more fundamental question: Is scanning a contour with multiple radii and attempting to construct circles from the scan data the best way to do it? Or is it more efficient/easier to measure each feature as an auto-feature?

    Thank you
  • I searched the help for "Scan Segment" and couldn't find anything. I can't find much info on the forum either. Sorry, I'm still fairly new to PC DMIS.

    This makes we wonder if I need to ask a more fundamental question: Is scanning a contour with multiple radii and attempting to construct circles from the scan data the best way to do it? Or is it more efficient/easier to measure each feature as an auto-feature?

    Thank you

    Dang too many variations my mind just scanned I got light headed. Standing in front of the part probably could come up with a quick answer for you, sorry. Give a little more information.
  • in reply to rrowsam
    Something like

    INSERT/FEATURE/CONSTRUCTED/CIRCLE then check segment scan box
  • The circle/scan segment 'how to' is in the Help file under constructing new features from existing features. Works well depending on your requirements....
    however, I recently was given a family of parts with similar radii/coordinates requirements. Luckily, I was able to convince the engineer to allow profiling a surface instead.
    You could also create your scan(s) and use 'to points', then pick 'correct' start/middle/end points, Kinda the same thing.
    Pretty well documented that measuring a radius with a small arc segment will lead to unhappy, unrepeatable results. (well, there is the fixed radius method. rinse and repeat as needed)
    If you must use X/Y/RAD I wish you luck, but IMHO a profile is the way to go.
    2¢

    Dang too many variations my mind just scanned I got light headed.
    Light headed, heavy headed...Kp61dude! i know from whereof you speak!
  • Or..

    Fill out all of the parameters for your scan. When its right where you want it...instead of clicking "OK", click "to points". This will throw all of the points that make up your scan onto your model as auto vector points.

    Then, create features as need from the points. Also, construct all of these points together as a feature set & then you can apply form tolerancing to the feature set.


  • Dang too many variations my mind just scanned I got light headed. Standing in front of the part probably could come up with a quick answer for you, sorry. Give a little more information.

    I can't post the drawing, but its a 40 inch long, 5 inch wild piece of aluminum, about 1 inch deep. On one side its mostly flat, but on the other side it largely cut out with pockets, long sweeping contours at a couple different depths, and various tighter contours (R .19-.27) around threaded holes.

    Does that help any?
  • in reply to rrowsam
    I know you can't post a print but some guys/gals on here get very creative on the explanations home brewed drawings.
  • in reply to rrowsam
    That and some also get creative with their homebrew Slight smile
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