To Place a UDF Where the First Feature Is an On-Surface Coordinate System
1. Create a UDF with a coordinate system as the first feature.
2. With a target model open, click
Model >
User-Defined Feature. The
Open dialog box opens.
3. Select the created UDF group file and click Open. The Insert User-Defined Feature dialog box opens.
4. Click OK. The User Defined Feature Placement dialog box opens to the Placement tab and the UDF preview appears.
5. Define the Placement references:
a. When the UDF has an on-surface coordinate system as the first feature, ON SURFACE CSYS, appears first in the References of Original Features list.
b. Select ON SURFACE CSYS. The layout on the right side of Placement tab changes to a layout similar to the on-surface coordinate system dialog box. Select a plane or a surface to place the coordinate system reference in the Reference Surface box. A preview image of the UDF with coordinate system drag handles appears on the model.
| • If the UDF has no reference model, the preview displays only the on-surface coordinate system. • If the UDF has reference model, the UDF preview contains geometry. • If the UDF requires references other than the ones that define the on-surface coordinate system, the initial geometry preview is displayed. It is a copy of the UDF geometry in the reference model. This preview is referred to as an “unattached preview.” • If there are no other references or all required references are defined, a solid “attached preview” appears with the UDF features highlighted. |
c. Specify the offset references in the References box and use the drag handles to position the UDF. The coordinate system offset type can be Linear, Radial, or Diameter.
d. If necessary, modify the axes of the coordinate system location. The second axis direction sets the normal direction. Leave the first axis direction in the same direction as the placement surface normal.
|  The axis letters are based on the original coordinate system feature. |
e. If there are references other than the on-surface coordinate system in the References of Original Features list, specify them.
6. In the Options tab specify the following options:
a. Specify the placement scale by selecting one of the following options:
▪ Keep dimension values (default)
▪ Keep feature sizes
▪ Scale by value
b. Specify how nonvariable dimensions are treated by selecting one of the following options:
▪ Unlock
▪ Lock
▪ Hide
c. Add or remove features from the Redefine these features list to specify which features will be redefined during UDF placement. Features with variable elements are checked for redefinition by default.
d. To edit the definition of a feature in the list, select its check box and click Edit Definition. Edit the definition in the user interface that opens.
e. To remove all the redefinitions of the features carried out during UDF placement, select Undo All.
7. Click
. All UDF features regenerate and the
User Defined Feature Placement dialog closes.