Blend trim face?

[Berserk]

Hello,

I applied a R0.5mm blend on the corners.
On some of the corners, the blend kinda falls short.
I would like the blend to extend up to the angles surface.

Unfortunately, the help files is not installed on my machine.
I tried playing around with the blend settings, but my file is huge and it takes forever to update.

Could someone please provide me with the proper setting?

TIA

UGNX5.0.4.1 MP6 \ WinXP-SP3
Productive Design Services

http://www.productivedesign.com

 

[hudson888]

Is that still the same part Berserk,

Anyway it probably has to do with tolerances and the accuracy of you're model. Have a look at the image I've attached. I've added blue and red lines to highlight the relative positions of the edges. If the blue line is inboard of the red you'll get the desired construction, but if it is outboard you get the opposite. Sometimes when it is just so close that you cannot tell then it can seem to be a bit of a lottery. There may be small differences in your geometry that you haven't detected and I certainly can't from a picture.


Best Regards

Hudson

www.jamb.com.au

Nil Desperandum illegitimi non carborundum

 

[Berserk]

Hello,

Thanks for the reply.

I have a tolerance of 0.001 and angle tolerance of 0.1.
The edge of the angled surface at the back matches the edge of the slot. Angled surface is a replace face of a ruled surface between the slot edge and the middle rib.

Is there a way to force UG to use a certain surface for trimming the blend?

UGNX5.0.4.1 MP6 \ WinXP-SP3
Productive Design Services

http://www.productivedesign.com

 

[hudson888]

Other than by edging the three way intersection just slightly inboard of the hole I know no better way to do it. In my example part the sizes of the two pads is 24.9 and 25.1 mm, and if you make either 25mm then you should get the desired result.

If you're working in metric you shouldn't need the tolerances quite so tight I work to 0.01 and 0.25 most of the time and the system defaults of twice that at other times. In inches we might set 0.001 and 0.25 but not in metric.

The attached model if you pick it apart shows exaggerated what NX thinks that you're trying to ask of it. So other than by relaxing the tolerances or moving the two faces of the pad inboard you probably shouldn't want to do this. You should also not open up your tolerances so much as to create geometry errors like spikes and cuts etc. I would run the examine geometry checks after trying any such thing.

I'd also review the absolute need to have an exact meeting of a vertex like this one wherever it is possible to do without. I know it seems psychologically satisfying but geometrically you create a more complex corner which if you can do without it might be better avoided.



Best Regards

Hudson

www.jamb.com.au

Nil Desperandum illegitimi non carborundum