Constant Chamfer on Oval Shaped Hole 2

[delaneyoco]

Is there a way to model a constant chamfer on a oval shaped hole in a shaft? The chamfer tool is creating an uneven chamfer, and the sweep tool will not work as the hole is through a diameter.

 

[JohnRBaker]

Can you show us what the result of using the Chamfer tool looks like?

John R. Baker, P.E. (ret)
Irvine, CA
Siemens PLM:
UG/NX Museum:

The secret of life is not finding someone to live with
It's finding someone you can't live without

 

[3DDave]

Since the curvature changes along the edge of that oval cut there isn't a way to create a chamfer that is constant in depth into the hole, angle with the wall of the hole, and extent onto the curved surface. You get to pick two of those and the third will have to adapt around the shape.

 

[delaneyoco]

Here is the chamfer tool results. I thought the same at first, but I have a step file that has the chamfer I'm looking for.

 

[delaneyoco]

Nevermind. The step file I was sent is incorrect. Thanks guys

 

[TheTick]

I've done literally hundreds of these.

First question: WHY? Just plain vanity? The result of 2D projection? I can't imagine a sound mechanical reason to be so demanding about a chamfer.

If it's because a Jony Ive wannabe insists, it will take some work. (Make sure you bill by the hour .) Create the highlight lines and loft a surface. There are many paths to incorporate the loft into the solid, but that's another lesson.

Apple wanted it. I gave it to them.

 

[JohnRBaker]

Another approach would be to create a couple of Offset Curves on the Faces of the Hole and Shaft, and create a Surface between those two Curves and then use it to Trim the Body.

John R. Baker, P.E. (ret)
Irvine, CA
Siemens PLM:
UG/NX Museum:

The secret of life is not finding someone to live with
It's finding someone you can't live without

 

[ewh]

John's suggestion may be the easiest way to model it.
How do you see this being machined?

"Know the rules well, so you can break them effectively."
-Dalai Lama XIV

 

[Toost]

Do we have a clear view on what should be the result and what is wrong with the result you get from NX?

If you want a constant angle from the sides of the hole, there are several ways to do that, one can be offsetting the edge down and then extrude that with a taper angle. + trim.
or maybe a law surface + trim.

Regards,
Tomas

The more you know about a subject, the more you know how little you know about that subject.