Transition Constraint woes

Transition Constraint woes

RDG3PO
Enthusiast Enthusiast
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Message 1 of 6

Transition Constraint woes

RDG3PO
Enthusiast
Enthusiast

I have what I think should be a simple motion, but isn't behaving properly. I'd like to drive or animate this later, but I suspect it won't go well with the behavior of the constraints as is. 

 

The red triangle part should move from vertical when at the bottom, to horizontal when at the top. but the transitional constraints keep popping out of their tracks and running along the outside surfaces of the rectangle. 

 

 

transition front view.PNG

INVENTOR 2014 STANDARD
IOSX and PARALLELS
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Message 2 of 6

Mark.Lancaster
Consultant
Consultant

@RDG3PO 

 

Your forum signature indicates you're using Inventor 2014 standard but the assembly was created in Inventor 2019.4..

 

Anyhow it was last saved with Inventor 2020.   Have you applied 2020.2 and tried again?  Just wondering if there was an issue with the original 2020 release.

Mark Lancaster


  &  Autodesk Services MarketPlace Provider


Autodesk Inventor Certified Professional & not an Autodesk Employee


Likes is much appreciated if the information I have shared is helpful to you and/or others


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Message 3 of 6

RDG3PO
Enthusiast
Enthusiast

yep, I haven't updated my signature in a while. Thanks for pointing that out. I'm running 2020 now, but I'll make sure the latest update is applied and try again.

INVENTOR 2014 STANDARD
IOSX and PARALLELS
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Message 4 of 6

JDMather
Consultant
Consultant

Expand the Relationships folder.

Right click on the Drive this constraint and select Drive.

Drive This.PNG


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Message 5 of 6

andrewdroth
Advisor
Advisor

You might have better luck if you make distinct surface bodies for the transition constraints. 

 

https://knowledge.autodesk.com/community/screencast/340f17bd-8370-4d1f-9e19-89e5f589e42a


Andrew Roth
rothmech.com

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IV2025 Pro
Apple IIe Workstation
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Message 6 of 6

johnsonshiue
Community Manager
Community Manager

Hi! Yes, I agree with Andrew. You want to create a zero offset surface on the faces of the stationary part. Then edit the transitional constraint and select the surface body as the stationary face. This helps control the scope of transition. Otherwise, the constraint solver and move the part (pop) else where on the stationary part, since all faces on the part are fair game.

Many thanks!

 



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