Ug nx: reference coordinate system datum csys

Datum Coordinate System (Datum CSYS) includes:

· A coordinate origin

· Three coordinate axes

· Three datum planes

Use the following exercise to master CSYS

1.

Create a new part file. The following coordinate system is the WCS (working coordinate system)

2. Hide the WCS and create a new reference coordinate system Datum CSYS.

ChooseFormat → WCS → hideTo hide the WCS.

ChooseInsert → reference/point → Datum CSYS

FromTypeList, selectAbsolute CSYS (Absolute Coordinate System)

ClickOK.

This completes the following reference coordinate system.

Note: A reference coordinate system has been created by default when you create a part.

3. Create a reference coordinate system using offset Datum CSYS.

Insert → Datum/Point reference/Point → Datum CSYS.

In the type selection, select the offset CSYS.

FromReferenceList, selectSelected CSYS.

Select a reference CSYS

InOffset from CSYSGroup, enter the following parameter values:

OX=40

OY=120

OZ=20

OAngle X=0

OAngle Y=20

OAngle Z=0

ClickOK.

4. Create an extruded feature with an internal sketch on a plane of the offset Datum CSYS.

ChangeWork LayerTo1.

ClickExtrudeOr chooseInsert→Design Feature → Extrude.

InExtrudeDialog box, clickSketch Section.

Note:

Refer toSketcherCourses if you are unfamiliar with creating sketches.

Select the X-Y plane of the offset Datum CSYS.

ClickOK.

OnSketch ToolsToolbar, clickCircle.

Click the origin of the offset Datum CSYS.

InDiameterBox, type90And press Enter.

ClickFinish Sketch.

The extrude dialog is displayed.

InLimitsGroup, inStart DistanceBox, type0.

InLimitsGroup, inEnd DistanceBox, type80And press Enter.

ClickOK.

The extruded feature is associated to the offset datum csys.

5. Create a datum Coordinate System on existing geometry.

ChangeWork LayerTo62.

ClickDatum CSYSOr chooseInsert → Datum/Point → Datum CSYS.

InDatum CSYSDialog box, fromTypeList, clickX Axis, Y Axis, Origin.

Select the arc center of the top edge of the solid body.

In the graphics window, select the x-axis of the Offset datum csys.

A temporary vector is displayed on the axis after you select it.

Select the y-axis of the Offset datum csys.

ClickOK.

The third datum csys is associated to the top edge of the solid body.

6. Edit the parameters of the Offset datum csys to test the associativity of the solid body.

In the graphics window, right-click the offset datum csys and chooseEdit Parameters.

InDatum CSYSDialog box, type the following values:

OX=0

OY=150

OZ=10

OAngle X=0

OAngle Y=-20

OAngle Z=0

ClickOK.

The solid body retains the same orientation to the offset datum csys. The other datum csys is associative to the solid body.

7. Close the part.