Adding features to a curved part

[Scary99]

I am new to inventor and trying to create a curved part with a hole in the center.  I have created a rectangular extrusion but now I need to trim the corners to make it a 23" diameter piece with a 10.875" hole in the center.  I have tried offsetting a plane to sketch on but cannot cut away the corners.  Suggestions?  File attached

[mdavis22569 · Accepted solution]

How do you need the corners cut?

Also, have you looked at the bend feature?

[jhackney1972]

I cleaned up your original sketch to center it in front of the origin and added some needed dimensions.  Then is it easy to sketch of the origin plane and get the two features you wanted.  Model in Inventor 2019 format is attached.

[SBix26 · Accepted solution]

It depend how you're going to fabricate the repad.  If it's a circle of sheet metal with a hole through it and subsequently rolled to the 60" radius, that's quite a bit different than if it's a rolled sheet trimmed to a circle and a hole cut through it.

Here's one way to model it (2019 format), assuming the first fabrication method.  I used sheet metal tools (Face & Fold).

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Sam B
Inventor Pro 2019.1.1 | Windows 7 SP1
LinkedIn

[Scary99]

The solution using the fold command is much easier.  Thanks for the info.  I am still having trouble joining this part to another part with a hole in it.  The two holes are different sizes but are concentric.  When I attempt to join the Repad to the other part it will not allow me to pick a point in the center of the hole but rather along the center line axis where the fold was made.  I experienced the same problem when I modeled the part by using lines drawn to a radius.

[JDMather · Accepted solution]

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@Scary99 wrote:

  I am still having trouble joining this part to another part with a hole in it.  

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No iam attempt Attached?

[SBix26 · Accepted solution]

The Z-axis goes right through the center of the hole, so you could use that, and you could add a workpoint to the model where that axis meets the curved surface that you care about.  There is no circular edge as far as Inventor is concerned, because the circular opening has been rolled into a curve.

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Sam B
Inventor Pro 2019.1.1 | Windows 7 SP1
LinkedIn

[Scary99 · Accepted solution]

I see now why I could not join using a center point.  I never knew that once the part was curved or folded Inventor no longer recognized it as a circle or hole in this case.  Good advice that I can use in the future