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Feature Teaching - Different Csys for same Feature

Valued Contributor
Valued Contributor

Hello,

 

I have teached a Feature and I have 4 of them in my model.

My issue is that the Orientation of the CSYS of the recognized features are different.

 

Unfortunatally I cannot show you the model. But does it has somthing to do with

the absolut CSYS of the Model or the MCS ?

The Csys on one Feature is at the backside and on the other at the front side.

 

snip_20180517140321.png    snip_20180517140411.png

 

I will upload the recognition rule - Thank you.

In this case I am using NX 10.0.3.5

NX 11.0.1.11
4 REPLIES

Re: Feature Teaching - Different Csys for same Feature

Solution Partner Genius Solution Partner Genius
Solution Partner Genius

Hi,

please tell us how you teach a new rule for this feature. Or When you teach this rule, did you create coordinate system?

Vavrusa Ondrej
NX10.0.3
NX11.0.x testing

Re: Feature Teaching - Different Csys for same Feature

Valued Contributor
Valued Contributor

I have created PMI-Notes for the different Areas, dimension PMIs and i have created a Koordinate System for the feature. With all these informations I have teached the Feature. For this Feature I created a new CostomerFeature library and a new recognition rule.

NX 11.0.1.11

Re: Feature Teaching - Different Csys for same Feature

Gears Esteemed Contributor Gears Esteemed Contributor
Gears Esteemed Contributor

The problem is the way you created the datum CSYS. You used Point, Z-vector, X-vector, but you cannot make sure that the objects these are based on are always collected in the same order.

From my point of view the normal face vector selection for the X-vector is causing the issue.

I would change the datum CSYS definition to only use objects that are on the same virtual plane, so using point, X- and Y-vector would result in a more robust definition.

Example selection strategy:

  1. origin
    • mid point between the two centers of the circular edges
  2. x-vector
    • from origin point to the center of one circular edge
  3. y-vector
    • from origin point to the mid of one linear edge

Test if this is giving you better results for the CSYS orientation, the CSYS should always point outward despite of the location being at the top or bottom of the oval hole.

Stefan Pendl, Systemmanager CAx, HAIDLMAIR GmbH
Production: NX10.0.3, VERICUT 8.1, FBM, MRL 3.1.7 | TcUA 10.1 MP7 Patch 0 (10.1.7.0) | TcVis 11.4
Development: C (ITK), .NET, Tcl/Tk Testing: NX12.0 | AWC 3.4 Preparing: NX12.0

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Re: Feature Teaching - Different Csys for same Feature

Valued Contributor
Valued Contributor

Hello, thank you for your support. unfortunately when I create a CSYS and teach the feature,

some of the  vector types are not trasfered to the MKE. So there is no CSYS definiton in the rule at all.

 

I have created a CSYS which is supported and then changed the Elements manually now it works.

With the definition of the Z-Axis with to points, both points refered to the center of the Circle edges - it works.

 

Thank you Smiley Happy

NX 11.0.1.11

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