Neutral CAD Data Exchange
Neutral CAD Data Exchange is the vendor-neutral logical capability of moving 3D geometry, product structure, PMI/GD&T, kinematics, and metrology data between heterogeneous CAD/PLM/CAM systems through openly published, non-proprietary file formats. It is the umbrella under which every concrete neutral format — STEP, IGES, JT, 3D PDF (PRC), QIF for metrology, DXF for 2D — sits as a format-bound child. Neutral exchange exists because no single CAD vendor’s native format is universal; suppliers, contract manufacturers, and inspection houses all run different toolchains, and contractual long-term archival (LOTAR) requires a format outside any one vendor’s product roadmap.
Concrete format children
| Steward | Capability child | Format note |
|---|---|---|
| ISO / TC 184 SC 4 | STEP AP242 Data Exchange | ISO 10303 |
| US PRO / ASME | IGES (legacy) | IGES |
| ISO 14306 | JT (visualization-oriented) | JT Format |
| Adobe / ISO 14739 | 3D PDF (PRC) | (format note pending) |
| ISO 23952 / DMSC | QIF (metrology) | QIF (ISO 23952) |
| Autodesk | DXF (2D drawings) | DXF |
Why an umbrella note
Treating each format as a peer obscures that they are interchangeable answers to the same business question — “how do I send my 3D data to a supplier who runs a different CAD?” — with different trade-offs (full B-rep vs. tessellated, with-PMI vs. without, archival vs. workflow). The umbrella lets curators reason about the capability across formats and lets system-layer products declare conformance at the right level of abstraction.
Relationships (see sidebar)
- Has part STEP AP242 Data Exchange; additional format-specific children to be added.
- Conforms to IGES, JT Format, DXF, ISO 10303, and QIF (ISO 23952).
- Implemented by every mainstream authoring CAD (Siemens NX, Dassault CATIA, SolidWorks, PTC Creo, Autodesk Inventor) and PLM platforms with built-in import/export (Teamcenter, Windchill, Aras Innovator).
- Supports Supplier Development, CAM Manufacturing Planning, and Detailed Design handoffs.
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