Placing Gtol Datum Reference Frames

Datum Reference Frames (DRFs) are automatically created for geometric tolerances with datum references.

• Facilitates machine-readable GD&T.

• You can place a coordinate system in the model.

• Zoom-dependant option for display

Figure 1 - DRF in Detail Tree

Figure 2 - Placed DRF

Figure 3 - Zoom-Dependent DRF Display

Placing Gtol Datum Reference Frames

Figure 1 - DRF in Detail Tree

Figure 2 - Placed DRF

Figure 3 - Zoom-Dependent DRF Display Datum Reference Frames (DRFs) are automatically created for geometric tolerances with datum references. You can place a coordinate system in the model to represent the datum reference frame location. The datum reference frame facilitates machine-readable GD&T for downstream use.

During creation of the DRF coordinate system, you can select the Display zoom-dependent check box so that the resulting DRF display size increases with the model as you zoom in. Combined with this option, you can also define the Axis length value.

Placing Gtol Datum Reference Frames

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MBD\Geom-Tol_DRF

SENSOR-MOUNT_GEOM-TOL.PRT

Steps

• Task 1. Create and place a datum reference frame coordinate system. Enable only the following Datum Display types:

• In the ribbon, select the Annotate tab.

• Select the 7B combined state tab.

• In the detail tree, expand geometric tolerance gp11 .

• Notice that the datum reference frame DRF4 was automatically created with the geometric tolerance.

• Right-click DRF4 and select Define Coordinate System .

• In the detail tree, select datum axis A_4 .

• Press CTRL and select the surface shown.

• In the DRF Coordinate System dialog box, select the Orientation tab.

• Click the Use projection reference collector.

• Select the surface shown.

• Select Z from the to project drop-down list. Click OK .

• In the detail tree, right-click DRF4 and select Define Coordinate System .

• In the DRF Coordinate System dialog box, select the Properties tab. Select the Display zoom-dependent check box.

• Edit the Axis length to 3 .

• Click OK .