Flat pattern creation error

[Anonymous]

Hello

I have problem with creating a flat pattern of one part. It is quite simple part, can't figure why the flat pattern creation fails.

I'm using Inventor 2016.

Error:

Sheet1.ipt: Errors occurred during update
Sheet1.ipt (Flat Pattern): Errors occurred during update
Definition1: Could not build this FlatPattern
Could not split between bend and plate. Please check if there is a relief gap so the bend can be deformed.
Could not split between bend and plate. Please check if there is a relief gap so the bend can be deformed.

[-niels- · Accepted solution]

Welcome to the forum!

Cut1 does not cut across bend, which results in the following:

Either make sure the cut does not cross the bend or use "cut across bend" and then correct the other features to your design intent.

[Anonymous]

Thank you for such a quick reply!

It was that cut which caused the error.

[Anonymous]

I make a lot of sheet metal parts and normally don't have a problem creating flat patterns. However, I have a part that refuses to make a flat pattern, and the error message says "Could not split between bend and plate."  I suspect the problem is similar to the one addressed in this forum, but I don't understand the instruction you have provided.

I can attach the part if that would be helpful.

Thanks,

Steve

[JDMather]

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@Anonymous wrote:

I can attach the part if that would be helpful.

Thanks,

Steve

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Yes, that would be helpful.

[Anonymous]

Here's the Inventor file.

I have tried modifying the bend radius but this doesn't seem to help.

Steve

[JDMather]

Forget you ever saw the Fold command - you should (almost) never need it.

This is not the correct way to model this part.

I have to run now - but will post the correct solution when I get a chance.

In addition to the interferences - if I set Measure results to dual units and all decimals - none of your dimensions make logical sense, another reason to never use Fold.

[johnsonshiue]

Hi! The flat pattern fails to create due to the bend zone crossing the circular bend relief. I use Direct Edit command to make the bend relief from 0.125 to 0.15. Then fix up a few bend sketches since they were associative to the geometry created before Direct Edit. Please take a look at attached part. It should work.

Many thanks!

[Anonymous]

Finally, an answer I can actually use!  Thank you for looking into this, it was very helpful.

[JDMather]

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@Anonymous wrote:

Finally, an answer I can actually use!  Thank you for looking into this, it was very helpful.

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What about the impossible feature interference?

What about the finished form dimensions?

[IgorMir]

Hi JD,

I guess - it is irrelevant nowadays! LOL! As well as fully constrained sketches and robust modeling practice. 

Cheers,

Igor.

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@Anonymous wrote:

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@Anonymous wrote:

Finally, an answer I can actually use!  Thank you for looking into this, it was very helpful.

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What about the impossible feature interference?

What about the finished form dimensions?

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