Misure automatiche (CMM) > Coordinate Systems > To Create a New Reference Coordinate System
  
To Create a New Reference Coordinate System
1. Click Inspect > Reference Coordinate System. The REF_CSYS dialog box opens and by default the Origin tab is selected.
2. From the Parent Csys drop-down list, select a coordinate system to be used as a parent for the new coordinate system. All transformations are done with respect to the parent coordinate system. The possible parent systems are: the Machine Csys and all the previously created reference coordinate systems.
3. Transform the reference coordinate system using one of the following options:
a. Primary Axis
b. Translate
c. Rotate
d. Custom
e. Theoretical
To Transform the Reference Coordinate System Using the Primary Axis Type
Specify rotational transformation of the parent coordinate system by aligning one axis with a Measured or Constructed entity. The DATDEF and DATSET statements are written in the DMIS program.
1. On the Origin sub-tab, select Primary Axis form the Transform Type list.
2. Click Orientation to open the Orientation sub-tab.
3. From the Align Csys list, select the axis of the reference coordinate system that you want to align to a reference.
4. On the Graphics window, select a Measured or Constructed entity as reference.
5. Click Flip to flip the aligned axis in the diametrically opposite direction.
6. Click OK.
To Transform the Reference Coordinate System Using the Translate Type
Specify translation along the parent coordinate system’s axes. The TRANS statement with the appropriate arguments is written in the DMIS program.
1. On the Origin sub-tab, select Translate form the Transform Type list.
2. Enter values for X, Y, and Z axes to translate accordingly.
OR
3. Select the Align to Ref check box and then select the references with which to align the new coordinate system.
4. Click OK.
To Transform the Reference Coordinate System Using the Rotate Type
Specify rotation about the parent coordinate system’s axes. The ROTATE statement with the appropriate arguments is written in the DMIS program.
1. On the Origin sub-tab, select Rotate form the Transform Type list.
2. Click Orientation to open the Orientation sub-tab.
3. Select the axis of the parent Csys from the Rotate Csys drop-down list.
4. Type the rotational value in the Enter Value box.
OR
5. Select the Align Axis check box.
6. On the Graphics window, select a Measured or Constructed entity as reference.
7. Select the axis of the reference Csys that you want to align with the selected entity.
8. Click OK.
To Transform the Reference Coordinate System Using the Custom Type
Use a non-DMIS command to define the coordinate system transformation. The DATDEF, DMESW with the appropriate arguments, and DATSET statements are written in the DMIS program.
1. On the Origin sub-tab, select Custom form the Transform Type list.
2. Click Orientation to open the Orientation sub-tab.
3. Type function name in the Function Name box. This is a non DMIS output command name.
4. If required, type arguments in the Function Args box, separated by commas.
5. Specify the degrees of freedom by selecting the check boxes for required directions and rotations.
6. On the Graphics window, select a Measured or Constructed entity as reference.
7. Click OK.
To Transform the Reference Coordinate System Using the Theoretical Type
Creo Parametric determines the bounding limits of the selected datum axis based on the display mode of the datum axis.
1. On the Origin sub-tab, select Theoretical form the Transform Type list.
2. Click Orientation to open the Orientation sub-tab.
3. Select the Csys as a reference to create the theoretical datum axis. Alternatively, you can create a Csys on the fly and use it as reference.
4. Click OK.