VW_01059-4

Confidential. All rights reserved. No part of this document may be transmitted or reproduced without prior permission of a Standards Department of the Volkswagen Group.Parties to a contract can only obtain this standard via the B2B supplier platform “”.© VOLKSWAGEN AGF o r m F E 41 - 01.06T h e E n g l i s h t r a n s l a t i o n i s b e l i e v e d t o b e a c c u r a t e .I n c a s e o f d i s c r e p a n c i e s t h e G e r m a n v e r s i o n s h a l l g o v e r n .N u m e r i c a l n o t a t i o n a c c o r d i n g t o I S O p r a c t i c e (s e e V W 01000).Q U E L L E : N O L I SPage 2VW 01059-4: 2006-061 ScopeThis standard provides specifications for working with the CAD system CATIA Version 4. If data exchange between different CAD systems is unavoidable, agreements have to be made between those involved in the exchange, for instance acc. to the directives set up by the CAD interface laboratory (E2TD department).This standard shall be considered a system-specific extension to VW 010 59-1 and VW 010 59-2; its content is a logical derivative of VW 010 59-3. The specifications relate to the following:─Function─Presentation─QualityThey are valid for the Production Division of the Volkswagen brand.Notes have been added where it seemed necessary in order to clarify the specifications for the user.2 DefinitionsFunctions, commands and terms that are specific to the CATIA system are capitalized.CATIA homepage Volkswagen intranet site where links to CATIA help menus and similar can be found.URL Universal Resource Locator. A special address on the internet or intranet.3 Representation of technical characteristics3.1 Administrative specificationsThe department responsible for design bears responsibility for CAD model data.3.1.1 Basic modelThe CATIA basic model which is valid group-wide shall be used whenever new CATIA models are designed. This model contains various default settings which are necessary for the application of CATIA at Volkswagen. These default settings shall not be changed. The basic model is stored in HyperKVS (Design Data Administration System) with the part number 'C.GRM.000.001' in the current version. Partner companies have access to the basic model on the supplier platform (), column "The Platform", submenus "Applications / R&D Services / CATIA / CATIA V4 / Downloads".3.1.2 Model structureThe layer assignment list is drawn up in comment format (FILE + COMMENT) to avoid loss of data during transfer to VDAFS format. There are software functions which allow the subsequent attachment of the comment to the VDAFS header.The layer structure used for the design of single vehicle parts (see VW 010 59-3 Supplement 1) cannot be transferred to operating equipment design. Therefore, a program has been incorporated to enable the adaption of the layer structure used in the part model to the needs of operating equipment design.Page 3VW 01059-4: 2006-06 Should this become necessary, the following layer structure shall be adhered to in operatingequipment design:LAYER: CONTENT:000 Coordinate systems and draw elements in operating equipment design001 Vehicle part model002 Changes in design model003 to 006 Weld spots007 RPS elements008 to 010 Reserved for further use011 to 253 Available for optional use254 All draw elements belonging to the part modelThe departments involved are responsible for structuring in layer ranges 011 to 253. Layer restrictions shall also be adhered to for elements in NOSHOW mode.3.1.3 Model dimensionModel dimension default setting for the basic model is 2 000 mm. This shall not be changed. NOTE: When generating model elements with CATIA, internal computing accuracy is determined by the model dimensions setting (default parameter "dimension"). Setting 2 000 mm is necessary for complying with the accuracy required in VW 010 59-1 and VW 010 59-2. Setting the model dimension to 2 000 mm does not mean that only parts up to this dimension can be designed! The dimension available for design (default parameter "INFINITY") is tenfold this value, going in every direction of the model dimension, i.e. ± 20 000 mm. The model to be generated shall be generated with the correct default setting from the start. Changing the model dimension afterwards will not increase design model accuracy.3.2 Dimensional and technological specifications3.2.1 Coordinate systemsAll coordinate systems, except for *AXS1, shall have a motivated designation visible in the space text (max. 8 characters without umlauts and special characters).Multiple-axis systems shall be deleted in VIEWS before the model is passed on or stored in HyperKVS. In DRAW mode, each VIEW may have only one h-v-coordinate system.Left-orientated and UNFIXED AXIS are not permissible.3.2.2 FacesFACE edge contours of trimmed surfaces shall be stored on the same layer as the base SURFACEs limited by the contours. These shall not exhibit gaps or overlaps wider than 0,02 mm. The curves used for surface trimming shall be trimmed prior to generating a FACE. The original 3D curves of the FACE edge contours shall remain to avoid loss of FACE edge contour in output via VDAIS.Page 4VW 01059-4: 2006-06Some CAD systems will not allow or cannot provide stable processing for FACES on standard surfaces. Therefore, it is recommended to transform them to faces on B spline surfaces for IGES output. Consequently, the 'SPLINE' option shall be set to B spline when starting the CATIA IGES processor.A group of surfaces shall be designed as skin, if possible.3.2.3 Details, groupsDETAILS shall remain in the model. DETAILS shall only be 'exploded' in the case of IGES conversion.GROUPS shall be deleted before passing the model on.3.2.4 Views, view layoutThe basic model pre-defines the following VIEWS:─Front view─Drawing frameAll VIEWS shall be positioned within the drawing frame. VIEW limits shall lie within the drawing frame. If there is no drawing frame as yet, two diagonally opposite points shall form the lower left and upper right corner of an imaginary drawing frame.In order to derive several DRAFTS, one DRAFT with an empty VIEW (VU1 or *VU1 or VU 1) must be available. Availability of this DRAFT with the empty VIEW is checked in ENDCHK. All other empty VIEWs shall be deleted.Sections and views shall be derived from SPACE in 3D designs.Each drawing view and section shall be assigned to a specific VIEW.Product-defining model edges shall be generated in the SPACE mode, not in the DRAW mode. Elements which are generated in a VIEW in DRAW mode do not affect the SPACE model on which they are based.3.2.5 Drawing, dimensioning, line type, textsIf a drawing consists of more than one sheet, the different DRAFTs shall be structured with increasing sheet number.1. DRAFT: SHEET0012. DRAFT: SHEET002DIN-A3, -A2, -A1, -A0 and A0+ formats1 shall be used as drawing formats wherever possible. Dimensioning elements shall only be generated or changed with the designated functions (DIMENS2).Standard line types and widths acc. to DIN 15 shall be used, do not define 'self-styled' types.In addition to TEXT DESCRIPTION 'EUDT_VCF', TEXT DESCRIPTION 'EUDT_MCF' has been defined and released for use in Euro project 2. This enables variable text formatting with incline and character spacing. Even old version-3-texts can be converted to new texts with this additional feature.1 German standard paper sizesPage 5VW 01059-4: 2006-06 Each 'non-fonted text' shall in principle be written without umlauts and special characters (aboveall, engineering symbols such as the diameter symbol).The model name shall be written without umlauts, special characters and blanks. Hyphens and underscores are permitted.Drawing frames and text macros according to VW 010 14 for operating equipment can be found in the CATIA library VW_AUDI_RAHMEN (VW AUDI frame library) in the FAMILY "Rahmen-Produktion" (Production frames) and "Wiederholtexte_Produktio" (Production text macros). Suppliers have access to this library in the download area of the supplier platform .3.2.6 Design element characteristicsDesign work is in principle performed in COLOUR=NONE mode to preserve model structure visualization with different colors.Prior to transferring the model or storing it in HyperKVS, the NOSHOW area shall be cleaned.Only models depending on original elements shall be stored in the NOSHOW area:─SURFACES depending on FACES─Generating models depending on SOLIDSKeep the NOPICK area clear.4 Final inspection, data check, storage statusThe following inspections shall be performed prior to passing the model on or storing it in HyperKVS:─Activate CATCLEAN (/cln) for checking for incorrect elements.─Activate master workspace.─Activate layer 000.─Activate coordinate system *AXS1.─Set 'DRAFT=SHEET001'.─DRAFT with empty VIEW available.─Delete UNUSED DETAILS, where necessary.─Delete UNUSED SYMBOLS.─Delete empty SETS.─Delete empty VIEWS whenever possible.─Set DR/SP switch to SP, or to DR if drawing exists.A CAD data check is in principle binding when generating CAD data models, preferably with the checking tools 'ENDCHK' and 'VALIDAT'.See procedure instructions 04.EZTI.01 "CAD-Datenprüfung im Produkt-Entwicklungsprozess" (CAD Data Check in the Product Development Process) for detailed specifications on this process.5 Data exchange with external partnersThe departments involved are responsible for data exchange with external partners. They ensure that the given guidelines are complied with. Checking incoming CAD/CAM data is also part of the department's responsibility.Appropriate information and files required for a Volkswagen conforming CATIA installation and a trouble-free data exchange are available to the partner companies at the URL .Page 6VW 01059-4: 2006-066 Referenced standards2VW 010 59-1 Requirements for CAD/CAM Data; Representation of Technical Characteristics VW 010 59-2 Requirements for CAD/CAM Data; Geometric and Mathematical Data Quality VW 010 59-3 Requirements for CAD/CAM Data, CAD System CATIA V4 for Vehicle Parts VW 010 14 Technical Drawings, Drawing Frames and Text Macros2 In this Section, terminological inconsistencies may occur as the original titles are used.。