3D CAD Prođ : CATIA, Automation-CATIA and 3DEXPERIENCE automation
AI-powered CATIA/3DEXPERIENCE guidance and automation

CATIA V5 & 3DEXPERIENCE Specialist (https://twitter.com/ejlee0)
How to model a complex part in CATIA V5?
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What is 3D CAD Prođ : CATIA, Automation?
A specialized assistant focused on CATIA V5 and 3DEXPERIENCE (ENOVIA/DELTA/3DSPACE), built to give step-by-step guidance, solid modeling & surfacing techniques, data governance best practices, and practical automation (VBA/CATScript/EKL/CAA RADE). It aims to shorten iteration cycles, raise model quality, and standardize methods across teams. Examples of what it does in practice: âą Model coaching: Walk you through building a top-down, skeleton-driven assembly in CATIA V5 (Publications, PowerCopies/UDFs, Design Tables, Part Design + GSD) with drafting and FT&A for MBD. âą Automation: Draft a VBA macro to auto-create drawing sheets, views, title block attributes, and a ballooned BOM; or write EKL rules to lock naming conventions, parameters, and maturity checks in 3DEXPERIENCE. âą PLM workflow: Configure a 3DEXPERIENCE lifecycle (In Work â Frozen â Released), map attributes between CATIA and ENOVIA, and set up change actions and revision logic for clean governance. âą Troubleshooting: Heal bad STEP geometry, fix broken links in contextual parts, resolve drawing update errors, or tune DMU clearance analysis in a large assembly.
Core capabilities and how they play out on real projects
Hands-on CATIA V5 & 3DEXPERIENCE Design Guidance (Part/3D CAD Pro introductionAssembly/Surfacing/DMU/FT&A)
Example
Design a parametric gearbox using a skeleton model, Publications, and re-usable features (PowerCopies/UDFs), then create drawings and MBD annotations.
Scenario
1) Skeleton setup: Create a context product (CATProduct) with a single skeleton CATPart holding reference planes, interfaces, hole axes, and overall parameters (module, shaft C-C distance, bolt circle diameter). Publish key geometry. 2) Part creation: Insert child parts in the same context. Use 'Use Published Geometry' for robust links. Drive wall thickness, fillet sizes, and bolt patterns with Formulas referencing skeleton parameters. 3) Reuse: Capture recurring patterns (boss + pocket + hole) as a PowerCopy or UDF with inputs (support plane, center point, size). Store in a catalog for reuse. 4) Surfacing: For complex housings, build Class-A-like blends in GSD (Sweep, Blend, Fill) and then thicken. Use Healing to fix imported supplier STEP faces. 5) Kinematics & DMU: Create a mechanism for the input/output shafts and run DMU clearance analysis to check gear casing clearances and service access. 6) Drafting/FT&A: Generate drawing templates (A3/A2), create front/section/isometric views, apply GD&T in FT&A (true position of bearing bores, perpendicularity of mounting face), and ensure associative updates. 7) Release: Validate with Update/Links reports, then push to 3DEXPERIENCE, set maturity to 'Frozen', run a design review, and promote to 'Released' after approvals.
Automation & Knowledgeware (VBA/CATScript, EKL Rules, Design Tables, CAA RADE patterns)
Example
Build a VBA macro that auto-creates a drawing package (sheet, views, title block, BOM balloons) and exports a parts list to Excel; add EKL rules that enforce modeling standards (naming, parameters, min fillet â„ thickness/2).
Scenario
VBA macro: âą Inputs: CATPart/CATProduct, title block data (project, part number, revision), template paths. âą Steps: (a) Open a drawing template; (b) Insert front/section views via DrawingViews.Add; (c) Populate attributes (part number, rev) into background sheet text; (d) Generate item numbers, create balloons on the assembly view, and (e) Build a BOM table and export to Excel using the Windows Scripting.FileSystemObject or Excel COM. âą Deployment: Save macro in the user CATStartup path; add a toolbar button via ToolsâCustomize. EKL design rule (3DEXPERIENCE): âą Rule: If SheetMetal.Thickness > 0 then FilletRadius â„ Thickness/2; block update with a message if violated. âą Benefit: Prevents downstream manufacturing issues and keeps models standard-compliant. Design Tables: âą Use an Excel-driven table to create 30 gearbox size variants (module, center distance, fastener size). Switch configurations by row to auto-generate family parts. CAA/EKB patterns (when needed): âą For enterprise scale, outline a CAA add-in that scans a product, validates metadata, and pushes clean attributes to ENOVIA before maturity promotion.
PLM Workflow, Data Governance & Collaboration in 3DEXPERIENCE/ENOVIA
Example
Define a clean lifecycle (In Work â Frozen â Released), set role-based permissions, map attributes (Part Number, Revision, Material) between CATIA properties and ENOVIA, and run change actions with traceability.
Scenario
1) Data model: Create a Part class with required attributes; set auto-numbering rules and a revision schema (AâBâC or 01â02). 2) Workspace setup: Organize Collaborative Spaces and use bookmarks to group projects; define access (Designers can Edit in 'In Work', Leads approve at 'Frozen/Released'). 3) Attribute mapping: Map CATIA properties (PartNumber, Nomenclature, Material) to ENOVIA attributes to avoid duplicate typing and ensure searchability. 4) Lifecycle: Designers create items 'In Work', perform peer review, then promote to 'Frozen' for validation (DMU clearance, drawing check). After sign-offs, promote to 'Released'. 5) Change management: Use Issues â Change Actions to revise impacted parts; supersede A with B while preserving traceability. Notify downstream (manufacturing, suppliers) automatically. 6) EBOM/MBOM handoff: Export EBOM with part usage and find-numbers; align with MBOM for manufacturing. Optionally publish STEP AP242 for neutral exchange. 7) Governance: Run dashboards for maturity coverage, missing attributes, and broken links; block promotion if checks fail.
Who benefits most
Mechanical & Surface Design Engineers using CATIA V5 / 3DEXPERIENCE
Engineers designing parts/assemblies, sheet metal, plastic, and Class-A-adjacent surfaces. They gain fast, reliable steps for skeleton-driven design, robust links (Publications), GSD surfacing workflows, FT&A for MBD, DMU/kinematics, and drawing standards (ISO/ASME). The result is fewer update breaks, cleaner parametrics, and quicker design variant creation.
CAD/PLM Leads & Automation Engineers (Methods, Governance, Scripting)
Owners of templates, standards, and toolchains. They benefit from ready-to-adapt VBA/CATScript/EKL patterns, deployment guidance (CATStartup, catalogs), CAA add-in outlines, attribute/lifecycle mapping, and revision/change best practices in ENOVIA. Outcome: consistent modeling across teams, automated documentation, and auditable, promotion-ready data.
How to Use 3D CAD Prođ : CATIA, Automation
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Check prerequisites
Have access to CATIA V5 or 3DEXPERIENCE (plus any required licenses), sample CATPart/CATProduct/3DXML data, and your companyâs drafting/modeling standards. For automation, ensure macro security allows trusted scripts and note required languages (VB/VBA/CATScript for V5, EKL/Knowledgeware or REST for 3DEXPERIENCE).
Describe your task clearly
State product version (e.g., V5 module: Part/Assembly/Generative Shape Design/Drafting; or 3DEXPERIENCE app), desired outcome, constraints, and deliverables (e.g., STEP AP242 with PMI, drawing template, BOM). Paste errors or tree snapshots and ask for step-by-step instructions or review checklists.
Leverage automation & knowledgeware
Request macros (VB/VBA/CATScript), EKL rules, templates, PowerCopies, Publications, and parametric3D CAD Pro usage strategies. Ask for patterns like top-down skeleton, hybrid/non-hybrid workflows, link management, and revision-safe methods for ENOVIA/3DSpace contexts.
Iterate and optimize
Use provided validation checklists (naming rules, update health, broken links), performance tips (cache/CGR, lightweight visualization), surfacing quality checks (deviation, curvature), and export settings (STEP/IGES/JT/3DXML). Request troubleshooting or refactoring guidance as needed.
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Top Questions & Detailed Answers
Can you generate CATIA V5 macros for repetitive tasks like batch exporting CATParts to STEP with custom names?
Yes. I provide production-ready VB/VBA or CATScript macros: define filters (CATPart/CATProduct), loop products, set STEP (AP242/AP214) options, apply naming rules (e.g., <PartNumber>_<Rev>.stp), and log failures. I also include instructions to reference CATIA libraries, set macro security, and test safely. While I donât execute code, I deliver complete scripts plus guidance on deployment via toolbar or batch mode.
How do you help automate 3DEXPERIENCE tasks with EKL and REST?
I write EKL (Knowledge Rules/Checks/Actions) to drive parameters, enforce standards, and tag parts (e.g., mass, material, compliance). I outline data flows (parameters â attributes, Publications, templates) and show REST/MQL patterns for metadata updates, lifecycle changes, and BOM sync. I also provide governance-safe practices for link stability, configuration contexts, and revisioning in 3DSpace/ENOVIA.
Can you improve model robustness and reusability for complex assemblies and surfaces?
Yesâvia top-down skeletons, Publications, and stable reference strategies; PowerCopies/UDFs for reuse; ordered sets and update control; surfacing hygiene (limiting extrapolations, matching continuity, deviation checks); and link management (isolate vs. maintain). I supply checklists for tree organization, feature naming, repair of broken links, and performance tips (cache, visualization modes, CGR).
What deliverables and standards can you help with for drawings and PMI?
I provide procedures and templates for Drafting/FTA: title blocks, borders, sheet sets, view generation, GD&T (ISO 1101/ASME Y14.5), balloons/BOM tables, and automated parameter-to-titleblock mapping. I cover dimensioning strategies, view/update performance, and export settings (PDF/DXF/DWG). For model-based definition, I explain PMI capture, standards alignment, and neutral export considerations.
Which data exchange formats and PLM workflows do you support?
Guidance includes STEP (AP242 for PMI), IGES (legacy), JT, STL, 3DXML, CGR, and DXF/DWG. I tailor options (tessellation, units, accuracy, layers, colors) and verify geometry quality. For PLM, I outline naming conventions, attribute mapping, lifecycle states, effectivities, and secure checkout/check-in practices to avoid broken links and maintain traceability.