Hello,

I need help about revolving a 3D curve about an axis. I want to create a revolved surface and than give a thickness to it. Actually I couldn't do this in Inventor. CATIA can easily create it even if the surface intersects itself after the revolution.

Is there a way to do it in IV?

Here is the screenshot of what I am mentioning about:

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"Imagination is more important than the knowledge."

Can you attach the ipt file here (roll up the EOP and zip)?

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AutoCAD 2013 Certified Professional
Autodesk Inventor 2013 Certified Professional
Certified SolidWorks Professional
http://home.pct.edu/~jmather/content/CAD238/AutoCAD_2007_Tutorials.htm

Maybe a 'Rotated Projection' command that projects a curve to a 2D sketch rotating about an axis maybe useful... I think I had better write it to the wish list down...

Here is an identical situation:

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"Imagination is more important than the knowledge."

No 3D Sketch required. Only boundary Patch and Thicken

Note: The Extruded Surface wasn't needed but I didn't want to rebuild the ref point I used from it...

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Steve Robbins
Inventor Design Solutions & Innovations
"I believe in being an innovator " - Walt Disney
@_iDSi

Thank you for your interest, but actually I want to create the housing of the compressor by just revolving the 0.4mm offsetted 3D curve about the axis of the compressor.

The file I've uploaded is the same but a simplified sample that just has a 3D curve and a rotation axis...

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"Imagination is more important than the knowledge."

well remove the Fillets and thicken offset the edge surface and you get what you desire, no?

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Steve Robbins
Inventor Design Solutions & Innovations
"I believe in being an innovator " - Walt Disney
@_iDSi

Like this?

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Steve Robbins
Inventor Design Solutions & Innovations
"I believe in being an innovator " - Walt Disney
@_iDSi

Ok, I've just added a screenshot that might schematically show you what I want to do. It is not true, but might give you an idea... I want to create a different part than the compressor as a housing.

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"Imagination is more important than the knowledge."

ok now I see your point...but if you create a b-secting workplane between the opposing sketches then proceed to project the partial 3D Arc edges from both sides of the bi-secting workplane...

This gives the resulting compound arcs by which you want to conform to with a single arc...this is simply eyeballed in...tolerances would be from the nearest tangent.

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Steve Robbins
Inventor Design Solutions & Innovations
"I believe in being an innovator " - Walt Disney
@_iDSi

Hi again,

I think that I've found a solution to create this part. It works for at least 'some' curves that doesn't intersect themselves after 'revolution'.

The solution is to use 'Sweep' command with its 'Path & Guide Rail' option. You can see the usage of this command for such a case here:



I've compared the volumes of the results created by CATIA & IV, and seen a little differences. You can also see those differences here:



I am not sure about which one is actually correct...

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"Imagination is more important than the knowledge."

Using you part and process, I was able to make the revolution, however, I found an issue. The AxisSketch contains a projection of the axis. Across rebuilds, it changed length and broke the Path. To fix, move the AxisSketch below the 3DSketch in the browser. Open the AxisSketch and replace the projected line with a normal line and constrain that line such that the ends are horizontal to the ends of the 3D Sketch. Constrain it to be coincident with the origin axis as well. This will make the sweep length the same as your 3D guide.

Oh yes, I am sorry. I now realized that I've shown the axis projection as the path in the picture above. Actually, I've done it not with the axis projection, but the line that you have mentioned. So, yes you are right.

Thank you.

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"Imagination is more important than the knowledge."