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Modeling > Feature Modeling > Datum/Point > Datum Axis > Procedures

Create a datum axis on a curve

This example shows how to create a datum axis located on a curve or an edge and relative to either that curve or edge or to another selected object. In this example another selected object was used.

  1. Choose Home tab → Construction group → Datum Axis.
  2. In the Datum Axis dialog box, from the Axis Type list, select On Curve Vector.
  3. In the Curve group, with Select Curve active, select the curve on which to place the datum axis (this example selects a highlighted edge).
  4. Locate the origin of the datum axis on the selected curve. In the Location on Curve group, select either Arc Length or % Arc Length option, and specify a value. (You can also drag the datum axis origin to a desired location on the selected curve.) This example uses % Arc Length and 50%.
  5. If you wish the datum axis orientation to also be relative to the selected curve, in the Orientation on Curve group, select an option from the Orientation list: Tangent, Normal, or Bi-Normal. (This example does not use these.)
  6. To make the datum axis relative to an object other than the selected curve or edge, in the Orientation on Curve group, from the Orientation option list, select Perpendicular to Object or Parallel to Object, then select the object to use. (This example uses Parallel to Object with the selected highlighted edge.)
  7. Click OK or Apply.

Related

  • Create an inferred datum axis
  • Create a datum axis from a point
  • Create a datum axis on the axis of a curve or face
  • Datum Axis dialog box
  • Pre-NX Datum Axis

Create a datum axis on a curve, NX 2212 Series © 2023 Siemens

Source: https://docs.sw.siemens.com/en-US/doc/209349590/PL20220512394070742.modeling/create_features_feat_datum_axis_oncurve_ht · retrieved 2026-07-10