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4.1 Design by modelling independent entities............................................ 11
4.2 Grouping elements in the various bodies of a CATPart. ..................... 15
4.3 Explicitly renaming elements ................................................................. 22
5 Optimised modelling for updates .......................................... 23
6 Modifying and correcting a model......................................... 29
6.1 Modifying a model ................................................................................... 29
6.2 Design with update cycle........................................................................ 29
6.3 Correcting errors ..................................................................................... 30
7 Check of a model before officialisation ................................ 35
7.1 Destroy all unnecessary elements......................................................... 35
7.2 Do not use red for solids......................................................................... 35
7.3 All elements except solid in no-show.................................................... 35
7.4 Publish reference elements .................................................................... 35
7.5 Check that solid is updated .................................................................... 35
Reference documents ........................................................................................... 36
Group of redaction ................................................................................................ 36
Approval and authorization .................................................................................. 36
Record of revisions ............................................................................................... 37
AIRBUS AP2255
3D modelling rules for CATIA V5
Issue: Draft A1 Date: February 2002 Page 4 of 37
1 Introduction
This document includes all of the 3D modelling rules. It also directs the designer to
specific manuals (subsidiaries) for consultation. In addition, it includes recommendations
for the structuring of the part data and verifications before officialization.
It mainly concerns use of the Part Design, Generative Shape Design and Sketcher
workbenches. For the use of these CATIA V5 workbenches consult others specific
documents, as AM2119 Part Design, AM2117 Wireframe & Surfaces, AM2118 Sketcher,
AM2252 CATIA V5 Multi-models links …
AIRBUS AP2255
3D modelling rules for CATIA V5
Issue: Draft A1 Date: February 2002 Page 5 of 37
2 General rules
2.1 Designation and numbering of files

Consult AP2610.
CAUTION: In CATIA V5, when a new xxx.CATPart file is saved in a directory, the Part
Number field of the part properties (visualised in the tree) is not systematically filled in
with the xxx character string.
Correspondence is absolutely necessary between the filename
(l53s12345200.CATPart) and the part reference (Part Number = l53s12345200).
On creation of a new part (File + New + Part or command New Part in Assembly Design
workshop), immediately fill the Part Number field in the Part name window. Then save
the file (Save As): the filename is then initialised with the part reference.
Remarks:
• The Part name window is systematically proposed when option ‘Tools + Options +
Infrastructure + Product Structure + Part Number + Manual input’ is activated. This
option should be locked by the CATIA administrator.
• To modify the Part Number, modify the properties of the part (contextual menu).
• If properties are modified after 'Save As', the part reference must be entered twice.
2.2 Positioning baseline
TBD
2.3 Elements to be distributed on layers

Consult AP2622 CAD layers organisation.
2.4 Modelling of parts in context
TBD
2.5 Modelling of detail parts
• To allow use of detail part file in CAM, model one part per CATPart file.
• In a CATPart, there must only finally be one main part body (PartBody),
except for conditions of supply which must be created in the bodies of the
secondary parts if the manufactured parts are different once installed on
aircraft.

Consult Conditions of supply chapter.
AIRBUS AP2255
3D modelling rules for CATIA V5
Issue: Draft A1 Date: February 2002 Page 6 of 37
2.6 Modelling of equipped parts with unique representation
An equipped part must be an assembly of its various detail parts and standard elements.
• No data duplication.
• A single part body per CATPart and not one main part body and secondary
part bodies for standard elements.
• CATProduct evolves simultaneously with the CATPart of the standard
　
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