Own Geometry for Outside Diameters

[[Ja...]]

Hey guys, we just upgraded from Calypso 2020 to 2025. We have several structures that feature, rather loosely located, bosses. Due to their generous position tolerances, we were using "own geometry," with ample search and clearance, to find and probe them. Now, in Calypso 2025, the stylus is shooting straight for the center, as if it's attempting to do an INSIDE diameter check - yes, I made sure the feature definition was set to O.D. and not I.D. - this worked fine in 2020. Any help is appreciated.

[[Ja...]]

The user manual still alludes that outside diameters/surfaces are possible, it just doesn't want to do it now. 😑

[[Ow...]]

Aside from it being a Calypso 2025 hiccup, what axis are you measuring it in, XYZ?

What type of head/sensor are you using, Vast, XXT, RDS?

A few maybe redundant questions.

Is the cylinder at an angle? If not, you might try changing clearance distance to 0.0.

Is the search distance before nominal position excessively large or too small?

Do you use position points in the strategy? 

Could there be another unknown probe assigned in one of the strategies?

Does the clearance box adequately surround the part?

Has the alignment flipped or rotated?

 

Edited September 4

[[Ja...]]

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Thank you for chiming in, Owen! To answer your questions:

 

As far as "which axis" most of the bosses live in the Z/Y plane, being approached and probed in X.

Head/sensor combo is a Vast XXT with RDS.

All bosses are normal to their respective axis - no angles.

Search distance before nominal isn't too large, usually set to the radius of the boss itself (10mm or so.)

No position or "move points" are being used.

No undefined or unintentional stylus systems are being used.

The clearance cube encompasses the entire structure.

While I have seen Calypso invert the strategy for features, this doesn't seem to be the case here.

 

To clarify, we use Own Geometry on some I.D. features as well - these are performing as expected. As a matter of fact, all of our 2020 measurement plans are running fine in 2025, except for this one issue.

[[Ma...]]

I would make sure that Clearance distance is set to 0. And verify the vector direction is correct, that is truly pointing outward. If not, and clearance distance is activated it could be driving to the beginning of the clearance distance.

[[Ja...]]

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Clearance distance is 10 (never been a problem before), but vectors are correct. It's my observation from Calypso 2020, that the clearance distance motions don't seem to apply to navigation until AFTER the "own geometry" routine has ran. I think I should clarify that I am having this issue in old, previously functional programs, written in Calypso 2020 - these are not newly-written / 2025 programs. These measurement plans have simply been loaded into 2025 and executed. They function flawlessly, outside of this strange lack of outside diameter own geometry. Again, they're unchanged from 2020 and worked fine there.

[[Je...]]

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 I think your observation is significant that only one of your 2020 measurement plans is exhibiting this problem.

Is it simply one feature or multiple features in that specific measurement plan that are exhibiting the problem?

You mentioned using your own geometry for other I.D. features.  Was the problem feature(s) extracted from CAD?

It sounds like you're doing all the right troubleshooting steps (inside/outside switch, clearance distance, stylus system, clearance cube, normal angles, search distance before nominal).

Not a likely cause, but have you checked formulas and alignment hierarchy?

Have you tried extracting/creating a new identical feature, manually setting an identical strategy (not from paintbrush), and re-running?

I'm sure it's frustrating that this measurement plan worked as expected before the upgrade to 2025.  Excited to hear how you resolve the issue.

[[Ja...]]

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Sorry, I should have worded that last line above a bit better. When I said all of our 2020 programs are running just fine, except for this one issue, I meant all of the programs were behaving normally EXCEPT for outside diameter own geometry. In other words, "O.D. own geo" DOES NOT function in ANY program now, whereas it did before. I have tried recreating the feature from scratch, but the problem persists.

[[Je...]]

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, wow that does change my perspective of the situation.

Like getting a flat tire and thinking, ‘no big deal, just swap it" then the spare is flat, jack missing, and the trunk has become a hostel for raccoons.

Crying into a pillow may help.

[[Ja...]]

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It is what it is, I suppose. For now, I'll have to create pilot features from circles and reference those as formulas. I can't be the only one having this issue, so hopefully a fix is discovered soon.