Modeling Use entity types that are supported by your translator or defined in exchange agreements Wherever possible use basic geometry and primitive solids to create the model Avoid modeling practices that can create geometry which cannot be exchanged, as in constructing solids where topological edges converge at a single degenerate point Use the highest precision when creating a part Most CAD vendors today implement AP 203 (configuration managed 3D design data), Conformance classes 2, 4, and 6 - Class 6 is advanced boundary representation solids - Class 4 is topologically bounded surfaces - Class 2 is geometrically bounded wireframe and surfaces AP 214 implementations so far have mainly copied AP 203 geometry Use b-rep solids since facetted boundary representation solids corresponds with the little-implemented AP 203 class 5 If you must use wireframe, make it geometrically bounded since topologically bounded wireframe corresponds with the virtually unimplemented AP 203 class 3
Use entity types that are supported by your translator or defined in exchange agreements
Wherever possible use basic geometry and primitive solids to create the model
Avoid modeling practices that can create geometry which cannot be exchanged, as in constructing solids where topological edges converge at a single degenerate point
Use the highest precision when creating a part
Most CAD vendors today implement AP 203 (configuration managed 3D design data), Conformance classes 2, 4, and 6
- Class 6 is advanced boundary representation solids
- Class 4 is topologically bounded surfaces
- Class 2 is geometrically bounded wireframe and surfaces
AP 214 implementations so far have mainly copied AP 203 geometry
Use b-rep solids since facetted boundary representation solids corresponds with the little-implemented AP 203 class 5
If you must use wireframe, make it geometrically bounded since topologically bounded wireframe corresponds with the virtually unimplemented AP 203 class 3
Importing STEP Files Confirm that files are defined to the agreed standard Verify that files have not undergone any conversions that may have corrupted them, e.g. ASCII to EBCDIC conversion can convert special characters, which have a meaning in STEP files Ensure that files have not been truncated, e.g. to 80 character records, or in length
Confirm that files are defined to the agreed standard
Verify that files have not undergone any conversions that may have corrupted them, e.g. ASCII to EBCDIC conversion can convert special characters, which have a meaning in STEP files
Ensure that files have not been truncated, e.g. to 80 character records, or in length
Exporting STEP Files For assemblies, confirm that all component files are in the same directory Make all geometry visible and selectable Remove unnecessary geometry, layers, annotation from the file(s) Use tools available in the native system to validate geometry prior to export Ensure that the STEP translator can support the nature of the data to be exchanged
For assemblies, confirm that all component files are in the same directory
Make all geometry visible and selectable
Remove unnecessary geometry, layers, annotation from the file(s)
Use tools available in the native system to validate geometry prior to export
Ensure that the STEP translator can support the nature of the data to be exchanged
Modify UNCERTAINTY_UNIT to match IDEAS’(“.1”)
Set TOPOLOGY_HEALING "on" in CATIA
Run autostitch after import
If prompted to deal with open edges, give tolerance of the original CATIA model
@ 2000 KFKI ISYS Informatikai Kft.
