Constrain a Feature Pattern to Dimension-controlled Geometry

Goal

We want to constrain the length or length and width of the pattern to the change in dimensions of a variable part without defining a formula for the length or width of the pattern.

Starting point

  • The part is dimensionally variable, i.e. its dimensions are controlled by variables. Define the Formula Field
  • The part has a feature that we want to form a pattern from.

Pattern

The instruction below describes making a pattern with the context-sensitive function.

You can also create a pattern with the ribbon bar function. See both cases: Linear Feature Pattern

  1. Select a hole from the part.
  2. Select the context-sensitive function Feature Pattern.
  3. Define the feature pattern properties in the dialog box. Feature Pattern Data
    • Select the Linear pattern.
    • Select the default location method of the pattern. Default plane.
    • Enter the number of members of the pattern in the length and width direction.
    • Enter a short length/width or spacing for the series members.
  4. Confirm the data in the dialog box by clicking OK.
  5. Position the auxiliary geometry sketch that controls the feature.
  6. Remove the length and width dimensions of the pattern.

  7. Add a distance between the part geometry and auxiliary geometry
    • From the auxiliary geometry, select only two lines between which the constraint is added, for example red and green dashed line.
    • Select two points from the auxiliary geometry, between which the constraint is added, so that the sketch does not become overdefined.

  8. Select OK.
  9. Test dimensional variation with the context-sensitive function: Dimension Table.