AIRBUS Procedure AP2255

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Owner’s Approval:
Name : Bruno MAITRE EMK-T
Function : Head of CATIA V5 Methods for French Team
SCOPE:
The aim of this document is to list the general rules to be complied with for the 3D
modelling of all types of parts.

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 …

1 Introduction............................................................................... 4
2 General rules............................................................................. 5
2.1 Designation and numbering of files......................................................... 5
2.2 Positioning baseline .................................................................................. 5
2.3 Elements to be distributed on layers....................................................... 5
2.4 Modelling of parts in context.................................................................... 5
2.5 Modelling of detail parts............................................................................ 5
2.6 Modelling of equipped parts with unique representation...................... 6
2.7 Modelling of equipped parts with multiple representations.................. 6
2.8 Symmetrical parts...................................................................................... 7
2.9 Variant parts ............................................................................................... 8
2.10 Parts with complex surfaces .................................................................... 8
2.11 Conditions of supply ................................................................................. 8
2.12 Drill-holes ................................................................................................... 9
2.13 Removability volume................................................................................. 9
2.14 Kinematic volume...................................................................................... 9
3 Specific rules........................................................................... 10
3.1 Machined parts......................................................................................... 10
3.2 Sheet metal parts ..................................................................................... 10
3.3 Panels ....................................................................................................... 10
3.4 Profiled parts............................................................................................ 10
3.5 Piping ........................................................................................................ 10
3.6 Electricity.................................................................................................. 10
3.7 Composite ................................................................................................ 10
4 Structuring of data in a CATPart ........................................... 11
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