Surface Continuity 1

[ahv]

Hello,
Anyone please,
I build Section Surface type Fillet-Bridge.
I set it to G3 or G2 or G1. Surface join without an error.
I export it to software like Autodesk Alias or Rhino3D.
I have no even position match. I guess there is problem with tolerance settings.
But shape analysis "zebra" for example is perfect.
Please advise.
Thanks.
Anton

 

[ahv]

Picture 02

 

[ahv]

Picture 03

 

[ahv]

Picture 04

 

[Xwheelguy]

Your tolerances are still not matching 100%. You are changing ONLY the gap tolerance (G0). G2, G3 in NX (0.5) are LARGER than in Alias (0.1). At minimum, the Alias tolerances for angle AND curvature (G2) should be 0.5 to match what was done in NX. Like I said earlier, a translation is NOT going to magically repair gaps or angles.

Look at the attached image you sent from Alias, see what I've circled in yellow. You have on the upper edge a max gap 0.013mm (which meets 0.025 in NX and no angular deviation is shown). Your Max. Gap Tolerance is set to 0.005. NX is 0.025 - increase Alias to 0.025 if that's what you're going to use in NX. Next, look at the lower edge - it shows Max. Gap of 0.012 AND Max. Angle of 0.15 yet your Alias tolerances are 0.1. So, going back to NX 0.15 meets 0.5, so in Alias change to 0.5.

If you model at a LARGER tolerance in NX, Alias MUST have the same tolerances for BOTH gap, angle and curvature. You can't just make the tolerances smaller (tighter) and expect the translation to repair the deviations. They have to at the very least match - and you'll probably find that on occasion you will have to make the tolerance in Alias (if exporting from NX) a little larger than the NX tolerances used.


Tim Flater
Senior Designer

 

[Xwheelguy]

Forgot the attachment in the above post. My apologies.

Tim Flater
Senior Designer