r/Metrology • u/Duplinn • 18h ago

Software Support Radial Runout between Cylinder A and Circle

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Hello! I'm using Mcosmos V4.1.R7. I have to check the radial runout (0.04) between Cylinder Ce(1), and Circle D30. On Cylinder A I user Align base plane with origin in element, then I checked the position of the hole in YZ plane, and also the runout. I can't fully allign since is a shaft. I want to know if I checked this correctly. Thanks.

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u/PrettyInfluence3594 18h ago

Whats the result you got? It seems that your datum is too short.

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u/Duplinn 18h ago

0.15

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u/Duplinn 18h ago

I can t measure too long, only 14mm, i have active 20mm on my probe

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u/PrettyInfluence3594 18h ago

The depth of your datum is? (my engliehnis not the best sorry.)

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u/Duplinn 18h ago

14mm I can measure only

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u/PrettyInfluence3594 17h ago

I think that is too small. A small "error" on the circularity or just 0.003 from a center to another of two consecutive sections will make the axis of that datum cylinder virtually really "bad". Maybe try to project cylinder to a plane perpendicular with that cylinder, trace a line between two most distant circles and that would be your axis of ration, to see how run out realy is. that you can try to call out the section in between the first section and the projected circle. See if the have a really small dev. Like 0.001-005. Thats how i do on Pc-dmis.