topic Re: Surface Smoothness in Inventor Forum

Inventor - Surface Smoothness

show0008 — Tue, 18 Oct 2022 15:42:25 GMT

Hi everybody,

I am new to Inventor and would like some suggestions on how I can remove the bubbles from the surface that was generated using the boundary patch feature.

Thanks in advance

Re: Surface Smoothness

JDMather — Tue, 20 Sep 2022 10:42:43 GMT

Attach *.ipt file here.

Re: Surface Smoothness

johnsonshiue — Tue, 20 Sep 2022 21:15:38 GMT

Hi! This could be related to the boundary sketch itself. Are the curves well-defined? Try turning on Curvature Display (right-click on the curve) and see the distribution. There could be drastic curvature change in certain part of the curves.

Another workflow to consider is Loft. Select the two disconnected curves as the sections and the other two as rails. Also, please share the file here. Forum experts can help take a look.

Many thanks!

Re: Surface Smoothness

show0008 — Tue, 18 Oct 2022 05:49:38 GMT

Thanks for the suggestion but I am not able to use Loft as I have multiple curves profiles which I am using to make the surface plane

Re: Surface Smoothness

show0008 — Tue, 18 Oct 2022 05:53:38 GMT

Hi,

Can anyone suggest on how I can remove these wavy surface.

Thanks in advance.

Re: Surface Smoothness

JDMather — Tue, 18 Oct 2022 12:29:18 GMT

I recommend that you install all Updates for your version of Inventor.

The file that you attached does not show the construction of the surface - it is a Derived Surface.

I do not understand your reasoning for not using Loft. (But then, I don't have access to the actual geometry creation.)

Re: Surface Smoothness

johnsonshiue — Tue, 18 Oct 2022 22:54:35 GMT

Hi! It seems that the waviness on the surface is probably from Loft of Boundary Patch. Please share the source ipt file that contains the surface. I would like to see how the surface is constructed and how to make it less wavy.

Many thanks!

Re: Surface Smoothness

show0008 — Tue, 18 Oct 2022 23:30:42 GMT

Thanks for the reply but as you can see I am trying to make a mould a blade, therefore I used the derive feature to subtract the blade from the block giving the negative mould. In addition, I need the mould to split the blade symmetrically. So, to obtain the cutting plane of the blade I used the ruled and patch surface.

Then I used this cutting plane to sketch numerous intersecting curves in equal interval using the original cutting plane as reference (can be seen above) on the mould block to create a cutting plane (created by joining the curves with patch surface tool). .

Note: I am not able to use the original cutting plane as the split function as its giving me an error :- Did not obtain meaningful result.

Re: Surface Smoothness

johnsonshiue — Wed, 19 Oct 2022 00:14:55 GMT

Hi! Many thanks for sharing the files! I see the issue. Boundary Patch tends to create tolerant loop in order to converge faster. In your case, one of the curve on surface in 3D Sketch2 has a tolerance issue. It is not connected to the edges properly. I recreate the curve and it looks nicer now.

After that, I used Loft to create the surfaces. The result is much smoother. Please take a look at the attached files.

In terms of surface tools, I would use Sweep, followed by Loft, followed by Boundary Patch (due to surface smoothness requirement).