Control Edge Blend Going to Point

[ajibcj]

I have a customer that insists on having the edge blend not come to a point. They've demonstrated how they would like it with their software (image on the left in grey). I can't figure out how to prevent the edge blend coming to a point (image on the right in blue). I really don't want to have to surface these blends as there's a lot to do.

I'm currently using NX 9.0.2.5 with Mach 3 Prod Design and Mach 3 Mold Design.

 

[JohnRBaker]

Have you tried using a 'Variable Radius' blend? If you use a 'Constant Radius' blend, there's no real way to avoid getting the 'blue' result.

John R. Baker, P.E. (ret)
EX-Product 'Evangelist'
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

 

[ajibcj]

Hi John,

Yes, I've tried variable but it continues to a point until it gets too big and fails. I forgot to mention, the horizontal blend at the bottom is 15mm and the vertical that comes to the point is 10mm. The point naturally forms because the vertical is smaller than the horizontal.

Chris

 

[cowski]

What is their concern with the "triangular" corner blend?
You can get a "4 sided" corner blend by using an asymmetric conic face blend (with the "floor" offset set smaller than the radius of the vertical blend), but then you don't end up with a nice round blend. If manufacturing the part is their concern (running CAM tool paths), the conic blend may be more work than the triangular "rolling ball" blend...

www.nxjournaling.com

 

[Xwheelguy]

Better check that vertical blend value - seems smaller than 2/3's of the horizontals, but maybe my eyes are due for calibration. I'd guess it around 7.5 or less.

Not very time consuming if you've got Shape Studio & know what tools to use.

Granted, I don't have YOUR model, as angles, buldges & such might make a difference, but just Extract the base faces & untrim or trim & extend them, use Face Blends as surfaces, make that cute little corner they want and trim or patch it up where needed. This is about as easy as it will get unless you mess with a Set Back in the Edge Blend, which they probably won't like because it throws WAY too many faces in there.

Pickiness over nothing at its finest!

Blending_301_-_Styled_Corner_NX9.prt

Tim Flater
NX Designer
NX 9.0.2.5 Win7 Enterprise x64 SP1
Intel Core i7 2.5GHz 16GB RAM
4GB NVIDIA Quadro K3100M

 

[ufsure]

This is in NX10 using Through Curve Mesh and Patch. Can be done in NX9.

Part file Blending_Corner_NX10.prt

Suresh

http://www.technisites.com.au

 

[ajibcj]

Thank you everyone for your input!

xwheelguy - I have the Styled Corner feature as well, never really learned about it until now. Thank you! The only issue I found is I have to make a bunch of face blends and then trim and sew. Plus, specifying the start end % is different as each blend length is different and I can't force it to say a R3mm rad at the bottom.

ufsure - I was hesitant at your approach at first because I was afraid it would create a lot of steps (I like my tree to be clean) but I think in the end, it's the best approach for my case. Thank you!

 

[Xwheelguy]

There isn't a short and sweet method that is easy for this "look" - and that's all it is. Values or forced radii on edges matter very little when you're not doing the same through the entire surface.

Tim Flater
NX Designer
NX 9.0.2.5 Win7 Enterprise x64 SP1
Intel Core i7 2.5GHz 16GB RAM
4GB NVIDIA Quadro K3100M