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May 27, 2022
12:14 PM

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May 27, 2022
12:14 PM

Length section curve

I'm a mechanical design,

I need to measure a lenght of section curve.

Actually I work with PROE WF4 or CREO8

Why with a singolar measure, exact with geometrical calculate, is different of a measure with

section curve.

On example 2667.4601versus 3984.22.

Many thanks for the answer.

Solved! Go to Solution.

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Jun 02, 2022
04:17 AM

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Jun 02, 2022
04:17 AM

You have a feature with overlapping lines in your model.

Please check feature N° 18 named "EXTR_PASSATE" and delete all 3 overlapping lines in the sketch.

After that the measured length will be correct.

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May 27, 2022
01:25 PM

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May 27, 2022
01:25 PM

It is not clear what you are trying to do and your example images are identical. So please explain again.

May 28, 2022
09:20 AM

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May 28, 2022
09:20 AM

Sorry, in the hurry,

there is two images with different mode to measure length.

May 28, 2022
05:04 PM

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May 28, 2022
05:04 PM

Well, the basic answer is that either method should yield the same number.

e.g., I tried this in Creo4 and I get the same answer in both "modes":

So, from the information you provided, I am not sure what clue to give you about where things have gone strange.

And your pictures still don't quite make sense to me - in that you seem to have 2x the edges selected in the one-to-one example vs the one where the curve from cross section is measured; yet that analysis yields a smaller number?

Jun 01, 2022
05:08 AM

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Jun 01, 2022
05:08 AM

Hi,

made a simplest part tested with Creo8.

The measure is made by directly selecting the feature from the tree.

Jun 01, 2022
05:15 AM

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Jun 01, 2022
03:55 PM

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Jun 01, 2022
03:55 PM

So it seems Creo4 works as expected, but Creo8 gives you strange results?

I don't have Creo8, so I can't offer any further help. You should reach out to PTC for technical support.

Sounds like a bug.

PS. still baffled as to why your "section" curves are "doubled up" like that; typically I think of a section as a slice using a single plane.

Must be something specific to your designs?

Jun 02, 2022
04:17 AM

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Jun 02, 2022
04:17 AM

You have a feature with overlapping lines in your model.

Please check feature N° 18 named "EXTR_PASSATE" and delete all 3 overlapping lines in the sketch.

After that the measured length will be correct.

Jun 03, 2022
03:08 AM

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Jun 03, 2022
03:08 AM

Hi, mf2001_98,

thank you so much for your wit in finding the error.

For "PAUSOB"

I need this to find the milling perimeter by simulating a constant Z path with a depth of pass of 4mm.

So I thought of making an "S" shaperd surface and intersecting the piece.

With a measurement feature that selects all the curve taking only a feature of intersec.

I obtain the perimeter and therefore the milling time.

Many thanks for your time, greeting Luca.

Jun 03, 2022
12:56 PM

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Jun 03, 2022
12:56 PM

Ah, I see. Interesting application of the modeling tools. I suppose in the Creo8 model, instead of "S" curve, you inadvertently sketched a "figure 8" curve?

Jun 06, 2022
04:18 AM

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Jun 06, 2022
04:18 AM

Hi,

it is a series of "S" and inadvertently some lines have overlapped.

If I had enabled sketch diagnostics I would been notified.

Pratically I get some steps for the plates to be milled in contouring.

With this part I would like to have an estimate of the workings.

Many thanks for your time. Greetings Luca.