Autodesk Inventor

[#1]

I am attempted to sweep an arc around a rectangle, but the program will only let me sweep on three of the four edges.  Model and pic attached.

[#2]

The file you attached doesn't look like the image you attached.

Turn off the visibility of Solid6 and examine Solid4 - does this look right to you?

Turn off the visibility of Solid4 and examine Solid6 in the same area where Solid4 is (zoom in on those corners in the opening) - does this look right to you?

Shouldn't your existing geometry be about 5 features rather than the around 50 features you have?

Looks to me like you are doing too much work.

I recommend starting over.

[#3]

As I start over from scratch myself - shouldn't these two arcs have a tangent constraint (added)?

[#4]

I probably am doing too much work, but I am not very good at inventor yet.  The picture looks different because the picture is showing how I want the sweep to look.  The pictures shows the sweep on 3 of the 4 sides of the rectangle, but when I select the 4th side I get errors.  The attached model has the sketch that I am attempting to sweep.

[#5]

Yes there probably should be a tangent constrant.  I am attempting to modify someone else's drawing.

[#6]

I don't know if I can find the time to do this thing right - hopefully someone else will jump in here, but in general

you should (almost) never be using Delete Face or Extend Surface unless doing something complicated

(here is an example of complicated)

[#7]

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jmcternan wrote:

Yes there probably should be a tangent constrant.  I am attempting to modify someone else's drawing.

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If I end up doing this - I will start over from scratch - I recommend that is what you do.

This doesn't look right either

[#8]

Ok, but should the arc typically be able to be swept around a rectangle?

[#9]

How are you going to make this?  Sheet metal parts?  Is that horn going to be 4 sheets or on molded part?

[#10]

I am building a model for an FEA analysis.  It would be 4 parts of sheet metal.