Projected geometry losing its reference all the time

Projected geometry losing its reference all the time

AnthonyHarris90842
Collaborator Collaborator
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Message 1 of 23

Projected geometry losing its reference all the time

AnthonyHarris90842
Collaborator
Collaborator

I have a multibody part which I use in an assembly.
I then projected geometry from another part to use in the multibody part.

Every time I move the part called roller the projected geometry is lost even though the roller hasnt changed at all.

This happens all the time.
See images below and I have attached the Inventor files

INVENTOR.jpgINVENTOR 2.jpg

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Replies (22)
Message 21 of 23

johnsonshiue
Community Manager
Community Manager

Hi Anthony,

 

Many thanks for sharing the file! I still cannot explain why the geometry association would fail. The only thing I could speculate is that the tangent constraint may play a role here. Maybe it flips the cylinder upside-down. Or, the two components are no longer parallel at a moment. Something causes the source geometry to fail to project.

Thanks again!

 



Johnson Shiue (johnson.shiue@autodesk.com)
Software Test Engineer
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Message 22 of 23

AnthonyHarris90842
Collaborator
Collaborator
Hi Johnson
I get you and also find it very frustrating.
Even if it did turn the roller 180 degrees the geometry is still there.
Can Autodesk not look at this problem.
I mean what happens now, Does Autodesk just ignore this issue?
Message 23 of 23

johnsonshiue
Community Manager
Community Manager

Hi Anthony,

 

The files you provided show that the reference is already lost. Though the geometry is there, the way it projects could be different. The resultant projected geometry may not be valid. Do you have a workflow showing it works and then it fails consistently?

As Robertas alluded, you may want to use Copy Object to copy the body geometry. Then project the copied geometry.

I personally would try replacing Tangent constraint with an equivalent Mate constraint. Tangent may reduced DOF. Also, it may be tangent to the extended face (out in the air) which is not what you want.

If you want to report a defect, please feel free to contact Autodesk Product Support. This forum is more for tips and tricks and education purpose. It is not a replacement for official support.

 



Johnson Shiue (johnson.shiue@autodesk.com)
Software Test Engineer