Alibre Design

Chapter 11 - Assembly Design‣ To delete a constraint:Select the constraint and press Delete on the keyboard; or right-click the constraint inthe Design Explorer and select Delete from the pop-up menu.The constraint is deleted.11.4.4 Using the Auto Constrain Mode ToolYou can use the Auto Constrain Mode tool to quickly place mate and alignconstraints. A mate constraint is applied if planar faces or linear edges are selected.An align constraint is applied if cylindrical faces or edges are selected.‣ To use the Auto Constrain Mode tool:1. Select the Auto Constrain Mode tool from the Assembly Modeling toolbar; orfrom the Tools menu select Auto Constrain; or press Ctrl + Shift + C on thekeyboard.2. Select the first entity.3. Hold the Shift key on the keyboard and select the second entity.The constraint is applied and is listed in the Design Explorer.You will remain in auto constrain mode until you select a different tool.11.4.5 Failed Assembly ConstraintsA constraint may fail due to the following reasons:• Constraint was initially applied incorrectly, e.g. applying an align constraint to aplanar face and a non-planar face.• The constraint creates an over-defined condition.• A condition changes after the constraint was applied, e.g. deleting a part froman assembly or the geometry in which the constraint applies is modified.A failed constraint is displayed in italics in the Design Explorer. In the example below,the Align constraint has failed.308