Community
Fusion Support
Report issues, bugs, and or unexpected behaviors you’re seeing. Share Fusion (formerly Fusion 360) issues here and get support from the community as well as the Fusion team.
cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 

Disappearing constraints when updating a body created by rectangular pattern

2 REPLIES 2
SOLVED
Reply
Message 1 of 3
k.kosciuszkiewicz
68 Views, 2 Replies

Disappearing constraints when updating a body created by rectangular pattern

Hello!

 

I designed a parametric box in Fusion 360, where the body is created by performing rectangular patterns on extruded features. Next, I created a side cut by projecting the body and drawing a diagonal line. The side profile sketch is fully constrained.

Before parameter changeBefore parameter change

image_2023-11-29_151742400.png

 

However, when I change the count of repetitions of the feature (increase box1_count and/or box2_count), the sketch is not updated correctly. Even though the projection is updated, the constraints between the projection and the line on the sketch are removed.

After parameter updateAfter parameter update

I tried this workflow on plain extruded bodies, and cannot reproduce this behaviour. This makes me believe it must be related to performing a pattern. I also experimented with changing the compute method on the pattern, but it did not affect the issue.

 

I was looking for a more robust way to design the part parametrically (previously I sketched the whole box, but found it difficult to update). Any help on how to do this parametrically is appreciated.

 

The design file is attached to the post.

 

Best regards,

Krzysztof Kościuszkiewicz

2 REPLIES 2
Message 2 of 3

The reason the constraints are automatically deleted, is because the projection after the quantity change is from a different/new edge. If you use a few simple formulae in the sketch it'll work fine.

 

See attached model.

Peter Doering
Message 3 of 3

Thank you! You confirmed my suspicion that calculating the total size is the solution here.

Can't find what you're looking for? Ask the community or share your knowledge.

Post to forums  

Autodesk Design & Make Report