Creating an Assembly Symmetry of Fasteners

1. Click Symmetry of fasteners .

   The Symmetric Reference Creation dialog box appears.
   
   

2. Select the product to make symmetric either in the specification tree of the current assembly or click to browse it.

3. Optional: Click to create an assembly symmetry and swap to the Assembly Symmetry workbench.

   This workbench offers a simple way to define the symmetry of an assembly using two windows as shown below:
   
   

   Through a dedicated set of commands, it allows you to choose the specifications of the symmetry for each object under the original product.

   Note: Most fasteners are symmetrical according to their axis which means that the symmetry of a spot fastener has the same 3D geometry as its original fastener. Therefore default specifications may not be the appropriate.

4. Optional: Select the Symmetry Constraint Definition option to create a symmetry constraint.

5. Optional: Select the reference plane to be used for the symmetry constraint.

6. Click OK.

   The new symmetric product is created as a new reference and contains either:
   

   • a new fastener engineering connection and a new fastener instance with a new fastener reference if the symmetrical fastener is different from the original one
   • a new fastener engineering connection and a new fastener instance with the same fastener reference if the symmetrical fastener is the same as the original one

   Here is an example with a single spot:
   
   

   The below snapshot shows the product structure created by the Assembly Symmetry, i.e.:

   
   

   • the symmetrical original product
   • the symmetrical spot fastener instance and its associated engineering connection
   • the symmetry specifications
   • the additional enginnering connections (that insure the symmetrical position between the objects)
   
   
   

For further information about this functionality, refer to Assembly Design : Assembly Symmetry.