Help optically verifying a profile

[[Ed...]]

Hello,

I am trying to measure this product. I have loaded a DXF (we don't have the STEP module (don't get me started...)), and I am trying to verify the profile as shown on the drawing. How? If I generate the features using 'Generate from CAD' and selecte 2D curve. When I measure the points it will show a very weird outline and measurements have a deviation of 4mm, where I expect it to be close to or in spec. When I overlay the camera image and the CAD model I see very little variation for example. 

What am I missing? The curve manual didn't offer much help neither.

Please help because as always; it's urgent.

* system is a O-Inspect 543. Product is too small/thin to probe.

Edited Monday at 10:51 AM

[[Ed...]]

Also, please appreciate my beautiful artwork.

[[Ma...]]

I think you can have problem with vectors of those points. Open that curve and on CAD view right click with mouse, open settings and select to show all nominal points.
You can try to correct vectors in curve feature window to be parallel with a feature or manually selected vector.

[[Ed...]]

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How would I go about doing this? I think this may be (part of) the issue, as sometimes the arrows point in the Z direction, while they should be pointing in X or Y ofc. Is there any easy explanation on this? Zeiss Service only says: "yeah, you should have a SMA with us or follow a training", which I somewhat understand, but I need to solve this issue rather fast. 

Thanks for your help Martin, always. 🙂 

[[Ma...]]

This is for showing all nominal points:

This is for modifying vectors:

!!! Before modifying anything on nominals - make a copy of your feature and tryout on that copy first - i know you can use ESC key to revert changes, but sometimes people forget about it and close window by (x).

 

You can also invert individual points by clicking on that arrow icon below "CP +Z" text to show whole list and right clicking on mouse to show context menu and select "Invert vectors" - you can also do selection of points like in windows ( Shift key to select all from initially selected point / Ctrl key to select individual points by clicking on them while presed Ctrl key )

Edited Monday at 02:12 PM

[[W....]]

(Responding from my own account, not my collegue's)

Thank you, will try this tomorrow!

[[Ed...]]

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Hi Martin,

I found four points that were inverted and simply deleted those. Then I got what I think is a reliable result.

As for filters and outlier elimination- any good reference or baseline? I'm only used to doing this with a scanning probe, not optically.

[[Ma...]]

I am sorry, but since i am not dealing with tight tolerances and surface is most of the time sandblasted, then we are not using any filtering or elimination on ZEISS Inspect.
For Calypso i am using only elimination on specific cases, where i know there will be scanning / evaluation problems or i just want to get rid of non functional deviations.

I would say the more filtering and elimination is used, the more you loose real informations. Mostly because of wrong settings for them.
I am able to visually filter needed informations then to look on missing part of evaluation.

If you have the time, invest it on test study on your part and real data.

I hope this advice will help 🙂