Defeaturing with Filters

You can selectively remove recognized geometric features (holes, fillets, logos, and chamfers only).

These features must match the parameters specified in filters and a given range of dimensions.

This task shows you how to:

Before you begin: Open a 3D shape representation with recognized holes, fillets, chamfers, and logos.
See Also
In the Knowledge Base
Case in which conic edge fillets can be defeatured
Defeaturing with fillet filter as angle
Defeaturing bi-tangent and keep edge fillets completely

Defeature Fillets

  1. From the Defeature section of the action bar, click Defeaturing .
    The Defeaturing dialog box appears. You can add or manage the list of activated filters.
  2. In the Defeaturing dialog box, select Fillet filter and click .
  3. In the Fillet filter dialog box, select:
    • The Minimum radius check box and define the lower limit of the radius value. This filters out all the recognized fillets with radius equal to or greater than this radius value, from the fillets to remove.
    • The Maximum radius check box and define the upper limit of the radius value. This filters out all the recognized fillets with radius equal to or less than this radius value, from the fillets to remove.
    • Both the Minimum radius and Maximum radius check boxes and define a range of radius value. Ensure that minimum radius less than maximum radius. This filters out all the recognized fillets with radius lying between these values, from the fillets to remove.
  4. Expand Advanced.
  5. Under the Advanced, select:
    • The Minimum length check box and define the lower limit of the fillet length. This filters out all recognized fillets with a length equal to or greater than this length, from the fillets to remove.
    • The Maximum length check box and define the upper limit of the fillet length. This filters out all recognized fillets with a length equal to or less than this length, from the fillets to remove.
    • Both the Minimum length and Maximum length check boxes and define a range of fillet lengths. Ensure that the minimum length is less than the maximum length. This filters out all recognized fillets with a length lying between these values, from the fillets to remove.
    • The Minimum angle check box and define the lower limit of the angle between adjacent faces of the fillet. This filters out all recognized fillets with an angle equal to or greater than the fillet angle, from the fillets to remove.
    • The Maximum angle check box and define the upper limit of the angle between adjacent faces of the fillet. This filters out all recognized fillets with an angle equal to or less than the fillet angle, from the fillets to remove.
    • Both the Minimum angle and Maximum angle check boxes and define a range of angle between adjacent faces of the fillet. Ensure that the minimum angle is less than the maximum angle. This filters out all recognized fillets with an angle lying between these values, from the fillets to remove.
    • The Filter out wall fillet pairs check box and enter a value in the Max thickness box to filter out the wall-fillet pairs with thicknesses smaller than or equal to it, from the fillets to remove.
    • The Auto max thickness check box to filter out all the wall fillet pairs irrespective of the wall thickness, from the fillets to remove.
    The filter for the fillet feature is listed under the Activated filters.
    Notes:
    • You can recognize and remove only edge fillets (except conic fillets).
    • The operation is unavailable for variable radius fillets and tritangent fillets. For more information, see Generative Shape Design User's Guide: Creating Fillets.
    • To be filtered out, a feature must satisfy:
      • all the criteria within the same filter (similar to a logical AND)
      • at least a single criterion across all the filters (similar to a logical OR)
    Warning: If the selected object contains ‘keep edge fillets’ and ‘bi-tangent fillets trimmed or intersected by other features', the defeaturing result using a fillet filter is not as expected.

    To obtain the expected result, use Remove Face . .

    For more information, see In the Knowledge Base: Defeaturing bi-tangent and keep edge fillets completely.

  6. Preview, edit, or confirm the filter. See Preview, Edit, or Confirm Filters.

Defeature Holes

  1. From the section of the action bar, click Defeaturing .
  2. In the Defeaturing dialog box, select Hole filter and click .
    The Hole filter dialog box appears.
  3. In the Hole filter dialog box, select:
    • The Minimum diameter value check box and define the lower limit of the diameter value. This filters out all recognized holes with a diameter equal to or greater than this diameter value, from the holes to remove.
    • The Maximum diameter value check box and define the upper limit of the diameter value. This filters out all recognized holes with a diameter equal to or less than this diameter value, from the holes to remove.
    • Both the Minimum diameter value and Maximum diameter value check boxes and define a range of diameter values. Ensure that the minimum diameter value is less than maximum diameter value. This filters out all recognized holes with a diameter lying between these values, from the holes to remove .
  4. Expand Advanced.
  5. Under the Advanced section, select:
    • The Minimum depth check box and define the lower limit of the hole depth. This filters out all recognized holes with a depth equal to or greater than this value, from the holes to remove.
    • The Maximum depth check box and define the upper limit of the hole depth. This filters out all recognized holes with a depth equal to or less than this value, from the holes to remove.
    The filter for hole feature is listed under Activated filters.
    Note: You can recognize and remove simple, counterbored, counterdrilled, and countersunk holes having flat bottom, V-bottom with blind, up-to-next, up-to-last extension limit. The hole may or may not be threaded. For more information, see Part Design User's Guide: Sketch -Based Features: Holes: About Holes.
  6. Preview, edit, or confirm the filter. See Preview, Edit, or Confirm Filters.

Defeature Logos

  1. From the section of the action bar, click Defeaturing .
  2. In the Defeaturing dialog box, select Logo filter, and click .
  3. In the Logo filter dialog box, select:
    • The Minimum size check box and define the lower limit of the logo size. This filters out all recognized logos with a size equal to or greater than this value, from the logos to remove.
    • The Maximum size check box and define the upper limit of the logo size. This filters out all recognized logos with a size equal to or less than this value, from the logos to remove.
  4. Expand Advanced.
  5. Under the Advanced section, select:
    • The Minimum height check box and define the lower limit of the logo's height. This filters out all recognized logos with a height equal to or greater than this value, from the logos to remove.
    • The Maximum height check box and define the upper limit of the logo's height. This filters out all recognized logos with a height equal to or less than this value, from the logos to remove.
    The filter for logo features is listed under Activated filters.
  6. Preview, edit, or confirm the filter. See Preview, Edit, or Confirm Filters.

Defeature Chamfers

  1. From the section of the action bar, click Defeaturing .
  2. In the Defeaturing dialog box, select Chamfer filter and click .
  3. In the Chamfer filter dialog box, select:
    • The Minimum chord length check box and define the lower limit for the chord length. This filters out all recognized chamfers with a chord length equal to or greater than this value, from the chamfers to remove.
    • The Maximum chord length check box and define the upper limit for the chord length. This filters out all recognized chamfers with a chord length equal to or less than this value, from the chamfers to remove.
    The filter for chamfer features is listed under Activated filters.
  4. Preview, edit, or confirm the filter. See Preview, Edit, or Confirm Filters.

Defeature Drafts

  1. From the section of the action bar, click Defeaturing .
  2. In the Defeaturing dialog box, select Draft filter, and click .
  3. In the Draft filter dialog box, perform the following steps:
    • Select the Minimum draft angle check box and specify the lower limit for the draft angle. This filters out all recognized drafts with an angle equal to or greater than this value, from the drafts to remove.
    • Select the Maximum draft angle check box and specify the upper limit for the draft angle. This filters out all recognized drafts with an angle equal to or less than this value, from the drafts to remove.
  4. Expand Advanced and perform the following steps:

    1. In the Pulling direction and Pulling direction offset boxes, specify the appropriate pulling direction and offset respectively.
    2. To retain the draft faces created on thin walls, select the Filter out thin wall drafts check box.
      • To define the thickness of the wall automatically, select the Auto max thickness check box.
      • You can also specify a value for the thickness of the wall in the Max thickness box.

  5. Click OK.

    Notes:
    • OK option is grayed out if the list of active filters is empty.
    • In case of empty recognition, the update is OK but a warning is displayed, mentioning that no change has occurred in the geometry.
    • You can expand the specifications tree under the node Defeaturing to see the summary of the filters.

Preview, Edit, or Confirm Defeaturing Filters

  1. Once the filters are defined, click Preview in the Defeaturing dialog box.
    • The features to be defeatured are highlighted in the work area.
    • A warning message appears if there are no features in the defined range of filter
    • A warning message appears if there are no filters defined.
    • Once clicked, Preview is no longer available for selection.
    Note: A message appears if a previewed feature cannot be defeatured.
  2. To edit a filter, double-click on the filter listed under Activated filters.
  3. To remove an added filter, click the cross before the filter.
  4. To remove all filters, click .
  5. Once you have added or edited the required filters, click OK.
    • Features are kept or removed as specified in the filters.
    • Defeaturing.x node is added to the tree. The specified filters are also summarized under this node.
  6. Double-click the node Defeaturing.x in the tree to open the Defeaturing dialog box and edit the required filter.