Creating an Offset on Part

This task explains how to create a stock as an offset of the part, for a roughing operation or a simulation .
Open the gets2.CATPart from the samples directory then select Machining > Surface Machining in the Start menu.
  1. Click Creates a stock by offset in the Geometry management toolbar.
    The dialog box is displayed:

  2. Destination: select a part in which the result will be stored.

  3. Part body: select the part on which the offset is computed.

  4. Type the value of the Offset.

  5. The Limited stock option can be selected to reduce the stock offset:

    • Original part:
    • Limited stock is not selected: The stock will look like this:
      generating too many passes:
    • Limited stock is selected: The stock is limited:
      Generating only the required passes:
  6. Enter an offset direction, 

    • either by its coordinates, 
    • or with the Select button: select a line to take its orientation, or a plane to take its normal,
    • use reverse in reverse a given direction.

    The direction is displayed as a red arrow.

  7. Set:

    • Level of detail: this coefficient represents the accuracy level of the computed rough stock.
      The higher the value, the higher the precision (but also the higher data size).

    • Number of points: displays the number of points of the computed rough stock, for information.
  8. Click Preview to visualize the result and OK to validate the offset:
    An element OffsetPolygon.X is created in the specification tree.

 

  • The output is not an exact offset of the part: details not seen in the offset direction may be omitted.
  • The bottom of the result is always flat and situated in a plane above the lowest point of the part at
    a distance equal to the offset value.
  • The result is not associative.