Can't Blend
Can't Blend
(OP)
Hi,
I'm trying to put a .015 blend on a linked body that has concave & convex surface. Previously, I had no problems, but I had to modify the Linked Body a little bit. Now, for some unknown reason, I can't apply my .015 blend.
What could be the cause & more importantly, how can I fix?
Thanks
I'm trying to put a .015 blend on a linked body that has concave & convex surface. Previously, I had no problems, but I had to modify the Linked Body a little bit. Now, for some unknown reason, I can't apply my .015 blend.
What could be the cause & more importantly, how can I fix?
Thanks





RE: Can't Blend
with only a .015 blend the tolerance should be quite small
RE: Can't Blend
Right now, my modeling preference & blend tolerance are set at .001. Should one or both of these be modified? If so, which one?
Thanks
RE: Can't Blend
Sometimes if you apply a smaller blend and 'sneak up' on the value you really want you can see where things are going wrong.
Depending on the situation, a face blend sometimes works where an edge blend fails.
Can you post a section of the model or a .jpg?
RE: Can't Blend
.001 tolerance should be OK
RE: Can't Blend
I'm using NX 7.5. I have a sketch, which made a tool to subtract into my main part body. I had no problem subtracting, but I can get 1 or 2 out of the 12 features - like a race track, to blend on the concave or convex side.
This should be a simple feature to use, as it previously was on the same part, but now being a pain...
The .001 tolerance doesn't seem to be working or doesn't seem to have an effect.
Any other suggestions?
RE: Can't Blend
John R. Baker, P.E.
Product 'Evangelist'
Product Design Solutions
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
http://www.siemens.com/plm
http://www.plmworld.org/museum/
To an Engineer, the glass is twice as big as it needs to be.
RE: Can't Blend
Hopefully this file will upload properly. I'm actually having a lot of issues with this whole model, but here are the primary issues.
In Eng-Tips_Blend_Issue.prt, I cannot apply a .015" radius blend on the concave & convex very well. Previously, I had no problems in the same in area.
In the, Eng-Tips_Transition_BC.prt, I'm having difficulties transitioning. My first intent, as with the core body in Eng-Tips_Transition_BC.prt, was to create a bunch of cross-sections, then use the Through Curve feature to connect it all.
I've discovered that splines are quite difficult to work with if I need to tweak my profiles.
Assistance with both issues would be greatly appreciated, but assistance with one would be great to. I added some pics to.
Thanks Everyone....
RE: Can't Blend
I forgot to mention that, Eng-Tips_Transition_BC.prt is a sub-component of Eng-Tips_Blend_Issue.prt, but I'm sure you experts would've figured this out.
Thanks
RE: Can't Blend
John R. Baker, P.E.
Product 'Evangelist'
Product Design Solutions
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
http://www.siemens.com/plm
http://www.plmworld.org/museum/
To an Engineer, the glass is twice as big as it needs to be.
RE: Can't Blend
I uploaded a 'zip' file called, Eng-Tips_NX 7.5 Blend & Transition_Help.zip.
In it, you will find:
1) Eng-Tips_Blend_Issue.prt
2) Eng-Tips_Transition_BC.prt (Child Component)
3)Transition_Pic_1.jpg
4) Transition_Pic_2.jpg
5) Transition_Pic_3.jpg
6) Transition_Pic_5.jpg
The file is approximately 15 KB's. I re-uploaded it to see if it will submit. It appears that the zip file has uploaded successfully.
The NX files are in 7.5.
RE: Can't Blend
RE: Can't Blend
RE: Can't Blend
I renamed Eng-Tips_NX 7.5 Blend & Transition_Help.zip to
Eng-Tips_NX_Blend_and_Transition_Help.zip & uploaded it.
As requested, I included a parasolid for the blend & transition issue.
Hopefully, you'll be able to open.
RE: Can't Blend
John R. Baker, P.E.
Product 'Evangelist'
Product Design Solutions
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
http://www.siemens.com/plm
http://www.plmworld.org/museum/
To an Engineer, the glass is twice as big as it needs to be.
RE: Can't Blend
In the Eng-Tips_Blend_Issue.prt file, I'm trying to add .015" blends on the concave & convex features in the upper-center of the part - called a core.
The clockwise or counter-clockwise types of features.
In the Eng-Tips_Transition_BC.prt, I'm trying to get a "cleaner & parametric" transitions of the Leading (Leftside or the side that is fairly straight, then transitions & twists to the core body. On the Trailing edge (Rightside) of the core, it's a more difficult transition.
My current features give me something close to what I want, but not close enough.
Thanks again....
RE: Can't Blend
John R. Baker, P.E.
Product 'Evangelist'
Product Design Solutions
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
http://www.siemens.com/plm
http://www.plmworld.org/museum/
To an Engineer, the glass is twice as big as it needs to be.
RE: Can't Blend
Thanks again for the asssistance.
RE: Can't Blend
If you happen to be looking at my, "Eng-Tips_Transition_BC.prt file, you will see that I have a bunch of sketch profiles. Originally, my design intent was to make a handful of cross-sections, then use the through-curve feature to define the solid (airfoil-core profile, twists & transitions.
As you will also see, I have a handful of airfoil-core sketch profiles that are partially constrained with splines. Getting the profile wasn't too difficult, but if I had to tweak the leading & trailing edges of these sketch profiles, the sketch became very difficult to work with, even to move it a couple of thousandths. Perhaps, you have a better suggestion to constrain & maintain desired profiles.
When using the Through Curve feature, there are areas that does not form well & becomes distorted or funking looking, which is not my design intent. If I had 5 cross-sections, the first 4 would develop fine, then for whatever reasons, the 5th would distort my whole solid feature.
What would be the cause of this?
Thanks again everyone....
RE: Can't Blend
I forgot to mention - Happy T-Day.....
RE: Can't Blend
John R. Baker, P.E.
Product 'Evangelist'
Product Design Solutions
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
http://www.siemens.com/plm
http://www.plmworld.org/museum/
To an Engineer, the glass is twice as big as it needs to be.
RE: Can't Blend
How did you simplify the linked body? Did you go to the child component & "clean up" the geometry in there in some way?
Thanks
RE: Can't Blend
John R. Baker, P.E.
Product 'Evangelist'
Product Design Solutions
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
http://www.siemens.com/plm
http://www.plmworld.org/museum/
To an Engineer, the glass is twice as big as it needs to be.
RE: Can't Blend
I e-mailed a "John R. Baker" at Siemens that I hope will find you.
I just got a reply, so it looks like it did.
Thanks