Defining the Compensations and Runout

 This section shows how to select the appropriate method to define compensations when flattening a surfacic flange or a surfacic flange with a joggle.
Compensation is a modification of the standard calculation of the unfolding process which intends to best represent the material behavior.
 
You first need to define which method you want to apply by customizing design tables. To do so, proceed as explained in Customizing Standards Files To Define Methods for Compensations.
 

  1. Click SheetMetal Parameters .

    The Sheet Metal Parameters dialog box is displayed.

  2. Click the Joggles tab.

  3. In the Compensations combo list, select the method as defined in the SheetMetal Standard files:

    • None: no compensation is applied

    • Method 1 (= Method V4)

    • Method 2
     
    If the method you chose is not the one defined in the SheetMetal Standard Files, a warning message is issued prompting you to select another method or the corresponding file.
       
    You can click the icon to display a schema explaining both methods. More information is available in Customizing Standards Files To Define Methods for Compensations.
     
       

  4. In the Definition combo list, select the runout definition:

    • External: this type of runout includes the Joggle fillets.

    • Internal: this type of runout excludes partially the Joggle fillets.
     
     
    You can click the icon to display a schema explaining both types of runout.

  5. In the Runout section, modify the formula's coefficient by clicking the up and down arrows.

    The Runout formula corresponds to the coefficient multiplied by the depth.
     
    If you create a new part, you can modify the formula's coefficient.

    If you work on a part created in a previous version, when you create a joggle a warning is displayed asking you to validate this parameter in the  Sheetmetal Parameters dialog box.

  6. In the Joggle Formula field, select whether you want to link a formula to the Joggle Runout parameter during the Joggle Feature creation step:

    • If you select Default, the actual behaviour will be applied to all the Joggles of the part.

    • If you select None, Joggle Runout formulas will be removed from all the Joggles of the part.

    • If you select Design Table, the new Joggle Runout formulas behaviour will be applied to all the Joggles of the part.

  7. In the Position list, select the joggle plane position. This list is available when you select Internal option in the Definition list of the Runout area.

    • Outside Radius: Joggle plane is placed at the start/ end radius point of the runout which also includes the joggle fillets.

    • Inside Radius: Joggle plane is placed at the start/ end point of the runout which partially excludes the joggle fillets.
     
    You can click the icon to display a schema explaining both types of positions.


     

  8. In the Direction list, select the Clearance and Runout Measure direction (if the joggle plane is not perpendicular to the OML):
    • Along the OML (default behavior)
    • Normal to the Joggle Plane
    You can click the icon to display a schema explaining both types of direction. 

  9. Click OK in the dialog box to validate the compensations and runout parameters.