How to draw a rolled edge in Inventor

[Anonymous]

I am attempting to draw a cover for a 50 gallon tank cover and cannot figure out how to draw something like the attached .ipt file in sheet metal.  I need a flat pattern for quoting purposes but am not sure how to accomplish it.  

All help/tips are appreciated.  

Thanks,

Dylan

[JDMather · Accepted solution]

Inventor Sheet Metal will not return a Flat Pattern for that formed part.

In later versions, 2020 and on, you could generate an approximation with Unwrap, but that did not exist in 2019.

You could use MeshMixer to Unwrap, but again that is an approximation and in this simple case I think a hand calculation would be the easiest route. 

[bob_holland · Accepted solution]

@Anonymous , @JDMather is correct Inventor 2019 and prior can only unfold around one axial direction at a time. A barrel cover is folded in two axial directions simultaneously.  If you need to stay on Inventor 2019, you might want to look at a 3rd party product called Exact Flat.  If I remember correctly, they have an online flatten service option.

Thank you.