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Profile vs T-value vs Colormap

Hi,

Another day, another question Upside down

Today i had to check a profile callout (0.5 max - form only), but i find the results a bit strange, maybe i'm missing something but here is what i got :

- Profile is reporting OOT while point cloud colormap shows pretty good values (tolerance set to +/-0.25) while T-value shows something even different :

 

Where is the truth here ?

I would have think the values shown on point cloud are equal to the T-value no ?

For example here the point 88 is reporting 0.140 and T-value is 0.197, point 127 is reporting 0.152 and T-value is 0.068...

Also, if i look at all the values shown, the min is -0.034 and max is 0.155 so i would assume the profile result would be 0.189.

Any idea ?

Parents Reply
  • Paste with pattern FTW! 
    If there are datums on the part perhaps be aligned to them, I get trying to best fit to the radius itself but that is rarely what the enginerds intend when they call it out like that. They would typically say they want it comparted to the nominal model location, which when you machine the part the datums establish the nominal model location in reality. Checking it to a datum will also allow you to give the machinist meaningful feedback about their part thus allowing them to make corrections. 

    Definitely steer WAY clear of the start/stop of the radius for your pickups though, that will throw things off. 

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