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3D CAD Pro🔍 : CATIA, Automation-CATIA and 3DEXPERIENCE automation

AI-powered CATIA/3DEXPERIENCE guidance and automation

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CATIA V5 & 3DEXPERIENCE Specialist (https://twitter.com/ejlee0)

How to model a complex part in CATIA V5?

Automating repetitive tasks in CATIA.

CAD System Installation Guide

CATIA Troubleshooting

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What is 3D CAD Pro🔍 : 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: ‱ 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. ‱ 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. ‱ PLM workflow: Configure a 3DEXPERIENCE lifecycle (In Work → Frozen → Released), map attributes between CATIA and ENOVIA, and set up change actions and revision logic for clean governance. ‱ 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 ≄ thickness/2).

    Scenario

    VBA macro: ‱ Inputs: CATPart/CATProduct, title block data (project, part number, revision), template paths. ‱ 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. ‱ Deployment: Save macro in the user CATStartup path; add a toolbar button via Tools→Customize. EKL design rule (3DEXPERIENCE): ‱ Rule: If SheetMetal.Thickness > 0 then FilletRadius ≄ Thickness/2; block update with a message if violated. ‱ Benefit: Prevents downstream manufacturing issues and keeps models standard-compliant. Design Tables: ‱ 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): ‱ 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 → Frozen → 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 (A→B→C or 01→02). 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 → 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 Pro🔍 : CATIA, Automation

  • Visit aichatonline.org for a free trial without login, also no need for ChatGPT Plus.

    Open the site and start interacting instantly—no sign-up or paid plan required.

  • Check prerequisites

    Have access to CATIA V5 or 3DEXPERIENCE (plus any required licenses), sample CATPart/CATProduct/3DXML data, and your company’s 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.

  • Macro Writing
  • Parametric Design
  • Surface Modeling
  • BOM Automation
  • Drawing Setup

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 don’t 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 ↔ 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?

    Yes—via 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.

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