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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.
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 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 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 Extract GD&T located next to Update Model in the 3DCS Model Update section of the 3DCS tool bars. This will open the Extract GD&T 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 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.
•Click [OK] to close the GD&T dialog.
•Save the model using Save Management.
•Select Nominal Build then Run Analysis. The results from using the extracted GD&T should be similar to the results from using the tolerances.
•Click Separate.