Perpendicular per inch

[[SH...]]

How could I check this perpendicular,it is being asked per inch...

IMG_20220728_184702.jpg

[[Ju...]]

Is the measured feature one inch long? There's not an option for Perpendicularity Ref like there is for flatness and straightness.

[[SH...]]

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Yes,it is 12 Inch long..

[[Er...]]

I don't know how long your cylinder is, but if I were doing this I would consider creating a cylindrical measurement strategy using lines. Let's say you're cylinder is 4 inches long. I would then re-call points in 1 inch length increments into separate cylinders overlapping every quarter inch or so to where you would have 10-12 of them to evaluate individually. You could evaluate the overall length of 4" at perpendicularity .004" and every other at the .001" callout. I believe this would satisfy the inspection criteria it is asking.

[[SH...]]

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Thanks for your reply.

[[Ow...]]

I could be thinking about this wrong (or others over-thinking it) but, couldn't you just bring in a result element and right click in the formula window, choose the perpendicularity characteristic , choose actual, and then if you know it's 12" long, then divide the the result by 12"?
getActual("Perpendicularity").actual/12.
If the length varied, you could also grab the length result using the same formula window and use it to divide it.

[[SH...]]

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This is theoretical okay but practically the part may not have a straight line perpendicularity deviation..

[[Ri...]]

If you wanted to get fancy, it might be possible to create a 2d Curve where there is a nominal point in the C/L of the ID/OD that corresponds with the height of each cross section. Then you would recall points, and you could use Line Profile/Ref.

Just a huge shot in the dark. Never tried it, but I'd give it a shot just to see what the results looked like.


Sorry forgot to note that you'd have to use Recall from individual center points, so you'd have to create individual circles that were recall feature points for their corresponding cross-section, and then individual points that recalled each circle. The individual points would be what you would recall into the Curve.