Family Tables (Creo)
The Pro/E heritage feature for representing a family of parts — generic part + instance rows controlling dimensions, parameters, suppression, and component substitution.
Definition
A family table is an Excel-like table inside a part or assembly file. Each row is an instance (e.g., M6 x 25 vs. M6 x 30 vs. M6 x 40). Columns specify dimensions, parameters, feature suppression, materials, custom properties. Instances are addressed by name in BOMs and drawings.
Nested family tables allow instances to have their own sub-tables.
Why it matters
Family tables are the canonical way to represent product families in Creo — fasteners, brackets, gears, plates of varying thickness. Done well, one .prt represents thousands of variants.
Technical Deep Dive & Core Mechanics
From a geometric perspective, Family Tables (Creo) represents a parametric boundary representation (B-Rep) mechanism within Creo Parametric. The underlying geometric modeling kernel—whether Parasolid, ACIS, or a proprietary solver—maintains a strictly ordered history tree (Feature Manager). Each operation stores topological references (faces, edges, vertices) that are re-evaluated sequentially during model regeneration.
Cross-Discipline Collaboration & Handoff
In global multi-office projects, Family Tables (Creo) is a high-frequency handoff node between diverse software packages. During cross-platform export (for example, exporting Creo Parametric drawings to IFC for coordination in Navisworks or Solibri, or converting mechanical STEP files into BIM detail families):
Common pitfalls
- Family tables without naming conventions — instance names become opaque.
- Missing dependencies — instance generates wrong geometry because a referenced dimension isn't in the table.
- Excessive instances (10k+) — file becomes unmanageable.
This concept is a core structural element of the Creo Parametric drafting and engineering environment developed by PTC. PTC's parametric MCAD — the descendant of Pro/ENGINEER, strong on top-down design, MBD, and integration with Windchill PLM.
Relevant Creo Parametric FAQs
❓ Is Creo the same as Pro/ENGINEER?
Yes, in lineage. PTC rebranded Pro/E as Creo in 2010 and introduced the Creo Apps architecture. Functionality has continued to evolve since; modern Creo is significantly different from late Pro/E in UI and direct-modelling tools, but the parametric core is the same.
❓ What's the difference between Creo Parametric and Creo+?
Creo+ is the cloud-connected variant — design data managed in PTC's Atlas cloud platform with collaboration features. The Creo Parametric authoring engine is the same. Creo+ targets distributed teams; Creo Parametric remains the file-based / Windchill-based standard.
⚡ Concept Self-Test
🌳 Semantic Crossroads & Navigation Pathways
Trunk-Branch-Leaf ModelCore glossary, interactive graph, and domain-wide concept index.
Parent design environments and platforms implementing this method natively.