the Geometric Constraints command to manually add geometric constraints to sketch geometry. You first select a constraint type and then select the objects that you want to constrain.
This workflow allows you to quickly create the same
constraint on multiple objects. It also sets the selection filter to only allow
the correct type of geometry for the selected constraint.
Auto Constrain:
Use the Auto Constrain command to select the types of geometric constraints that NX applies automatically to a sketch. NX analyzes the geometry in the active sketch and applies the selected constraints where possible.
The Auto Constrain command can be especially useful when you add geometry to the active sketch, particularly if that geometry was imported from a different CAD system.
Geometric Constraints:
Use the Geometric Constraints command to manually add geometric constraints to sketch geometry. You first select a constraint type and then select the objects that you want to constrain. This workflow allows you to quickly create the same constraint on multiple objects. It also sets the selection filter to only allow the correct type of geometry for the selected constraint.
Constraints can:
- Define a line as being horizontal or vertical.
- Ensure that multiple lines remain parallel to each other.
- Require that several arcs have the same radius.
- Position your sketch in space or relative to outside objects.
When the Select Object to Constrain option is active, you can select multiple objects.
In the Settings group, you can select the:
- Automatic Selection Progression check box so that you do not need to click the middle mouse button to advance to the Select Object to Constrain to option.
- Constraints that you want to display by default in the Constraints group.
Constraints can:
Define a line as being horizontal or vertical. Ensure that multiple lines remain
parallel to each other. Require that several arcs have the same radius. Position
your sketch in space or relative to outside objects.
How sketch constrains works in Nx Siemens which is mentioned below
video?