Applying Datums to Features in CAM2

Preparation

1. Measure or create the datum features
   • If using CAD, the recommended workflow is:
     • Pick from CAD – create datum features on CAD
     • Select Nominals in Features panel, right click Add Measurement
     • Measure the corresponding datum features
   • If CAD is not used, the user must manually enter the nominal information for:
     • Feature position (x,y,z) – some features require multiple entries
     • Feature vector (i,j,k)
     • Feature Size

Note: This can be done via the Feature Information panel, or by using the Key-In options.

Applying Datums to Features

Once created, select the first datum feature in the Features Panel. Right click, select Assign Datum, then choose Datum letter and type Tip: for circle datums, normally a linear datum is used.

• Datum labels will be displayed in the Feature panel and 3D viewer
  
• Datums feature can now be used for datum alignments and GDT callouts

Note: A datum feature must have both actual and nominal information to allow it to be used in a datum alignment.