Using Parts with Embedded GD&T

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Using Parts with Embedded GD&T

3DCS has the ability to read the embedded part GD&T. In this lesson, you will learn how to extract GD&T to use in the model.

 

V5 7401 FTA on Parts

 

If the parts were opened with Use Partial Loading selected, the PMI will not be read. The parts must be fully opened to extract the GD&T.

 

Select all of the parts in the Assembly Navigator including Lamp_SubAsm_Lesson6.

Right-click one of the selected parts and select Open arrowDCS Component Fully

 

NX 7500 Open Component Fully

 

Before we extract the GD&T embedded in the part files, we will delete the GD&T we created in Lesson 5 of this tutorial.

 

In the 3DCS Model Navigator expand the Bracket.

Right-click on the GD&Ts section of the Bracket and select Delete to delete all the GD&T associated with the Bracket.

Repeat this process for the Turnlamp and the Headlamp to delete their respective GD&T as well.

With the model separated, verify the mesh display is active and select DVTI_dcsDeviate Deviate.

 

Notice that the meshed surfaces of the Bracket, Headlamp, and Turnlamp no longer deviate from their nominal location.  Now, we will extract the GD&T from the individual parts.

 

Click [Close] in the Deviate dialog to stop the deviation.

Click DVTI_dcsSearchFDT Extract GD&T located next to DVTI_dcsUpdateModel Update Model in the 3DCS Model Update section of the 3DCS tool bars. This will open the Extract GD&T dialog.

 

L11 V5 Extract GDT DialogL11 SW Update GDT DialogL11 Creo Update GDT DialogL11 NX Update GDT Dialog3DX_Update_GDT_Dialog

 

From this dialog we can choose whether we want to extract the GD&T from all the components (assembliesproducts and parts), only assembliesproducts, or only the parts.  For this model we want the GD&T extracted from the parts and have no GD&T to extract from the assembliesproducts so as long as we have All Components or Parts Only selected then we will extract the part level GD&T that we want.  Also we can choose whether to extract the GD&T from the CAD to the 3DCS model or push the GD&T changes from the 3DCS model to the CAD.

 

Ensure that either All Components or Parts Only is selected as well as Extract From.

Select Final_Assembly in the 3DCS Model Navigator to extract the embedded GD&T from all parts in the model. A message will appear stating the number of extracted GD&T callouts.

Click [OK] to close the dialog box.

Click [Exit][Close] to close the Extract GD&T dialog.

Click the DVTI_gdtlist GD&Ts button then select the Bracket to view the imported GD&T.

Double-click on one of the Position call-outs in the GD&T List to view and notice its similarity to the GD&T created back in Lesson 5.

 

L11 Extracted GD&T Dialog

 

Click [OK] to close the GD&T dialog.

Save the model using Save Management.

Select DVTI_dcsNominalBuild_SP Nominal Build then DVTI_Run_Analysis Run Analysis. The results from using the extracted GD&T should be similar to the results from using the tolerances.

Click DVTI_dcsSeparate_SP Separate.