Alibre Design

Chapter 8 - Sheet Metal Feature CreationOn the Advanced Tab:8. In Bend Relief Type, specify if you want No Bend relief, Rectangular Relief, or Rounded Relief.9. If you choose to have a relief, enter the Width and Depth. (Default values are taken from theparameters set in the properties dialog box)10. Bend Allowance — Choose Use K factor: use the specified K-Factor to calculate allowance forthe bend OR choose Use unfold length: set the unfold length used when unfolding this bend.11. In Label, type in a unique name if desired.12. Click OK to create the feature.8.4.1 Sheet Metal Changes for Version 9.1 and LaterIn version 9.1 of Alibre Design, modifications were made to the way flanges are created in sheetmetal parts. These modifications ensure that the final dimensions of the sheet metal part arecorrect. They will affect the dimensions of the part and the dimensions of the flat pattern.Your models will be affected in the following way:• Flanges that were created in a previous version of Alibre Design will continue to begenerated using the old method, and the final dimensions of your model will remain thesame.• New flanges created in the model after opening the part in v9.1 or later will follow theupdated process for creation. The final dimensions of your model will be correct, but maynot behave as you expect, based on your past experience with the software.It is possible to have flanges in your model that are calculated differently. This is because you canhave flanges in your model that were created in a previous version, as well as new flanges createdin version 9.1 or later.How model dimensions are calculatedThe tab length and flange length determine the overall dimensions of the final sheet metal part. Theflange alignment type and length type that are selected during flange creation determines how thetab and flange length are measured in the part.The new method of calculation will produce different dimension values then the old method when thefollowing options are chosen:• If the Bend Angle is anything other than 90 deg, and the alignment type is Inside, the lengthof the tab feature will be different.197