Fundamentals > Family Tables > Adding Items to Family Tables > Adding Reference Models to Family Tables > Example: Adding a Reference Model to a Family Table
Example: Adding a Reference Model to a Family Table
This example shows a Family Table that includes an external reference. It uses two parts (A and B) and an assembly (AB).
The hole in part B is dimensioned to the outside edge of part A. In different instances of assembly AB, the thickness of part A varies, and so the hole in part B must be located differently. However, since part B has an external reference, its geometry can only be updated if it knows which assembly instance it needs to reference.
Part A has a Family Table that controls the values of its thickness. Assembly AB has a Family Table in which each instance of AB includes a different instance of part A and part B, Part B has a Family Table in which the external reference to assembly AB is established.
Family Table for Part A (5 instances)
Instance
d2
d3
Generic
3.00
3.00
A01
1.00
1.00
A02
2.00
2.00
A03
3.00
3.00
A04
4.00
4.00
A05
5.00
5.00
Family Table for Part B (5 instances)
Instance
External Reference 0
Generic
AB
B01
AB01
B02
AB02
B03
AB03
B04
AB04
B05
AB05
Family Table for Assembly AB (5 instances)
Instance
Component
Component
Generic
A
B
AB01
A01
B01
AB02
A02
B02
AB03
A03
B03
AB04
A04
B04
AB05
A05
B05
1. Part A
2. Part B
The generic of Assembly AB, in the top part of the diagram, shows Part A and Part B joined together and then dimensioned. An Instance of Assembly AB, shown dimensioned at the bottom of the diagram, reveals that the hold in Part B has an external reference to Part A.
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