MVP v1: Drawing Generation and Vision-Assisted DFM¶

Source files: Architechture & Research/RapidDraft/Product Scope & PRDs/MVP Scopes and Problems.md (lines 166-320) Last synthesized: March 2026 Purpose: Specification of v1 extensions: automated drawing generation and intelligent DFM review.

One-Liner¶

RapidDraft v1 extends v0 with controlled drawing generation and vision-assisted DFM, turning a tight review loop into a tighter workflow: CAD → generated drawing → auto-checks → issues → traceable report.

What v1 Adds to v0¶

v1 builds on top of the v0 review and collaboration foundation, adding two major features: 1. Repeatable drawing generation using NX's native drafting, guided by RapidDraft 2. Vision-assisted DFM review as a "second opinion" on manufacturability risks

Both features are optional and configurable — teams can use one, both, or neither depending on their workflow.

Feature 1: Controlled Drawing Generation¶

Problem It Solves¶

Drawing creation is inconsistent. Every engineer follows the template slightly differently—different views, different scales, different title block population. This creates: - Rework when drawings don't match company standards - Slower handoffs to manufacturing (quality questions about drawings) - Bottlenecks when drafting expertise is scarce

v1 goal: Make drawing creation repeatable, guided, and checkable.

How It Works¶

You press "Create/Update Drawing for this CAD model revision" and RapidDraft:

Triggers NX to generate the drawing using a company template (chosen views, sheets, projection standard)
Applies company defaults consistently (sheet size, title block population, view naming, scale rules)
Runs immediate drawing checks (same checks as v0) and gives you a punch list
Saves the resulting drawing + report back to the correct Teamcenter revision

This turns drawing creation from "every engineer does it slightly differently" into a standardized workflow.

Scope Details: What's Included¶

Create Drawing from CAD Model Revision (NX-generated)¶

Choose drawing template (A3/A2, ISO/ASME style)
Create base views (front/top/right) + isometric (minimum set)
Apply standard scale rules

Update Drawing After CAD Changes¶

Regenerate / update existing views
Detect if drawing is now out-of-date
Re-run checks automatically

Title Block and Revision Table Population¶

Pull key metadata from Teamcenter / model attributes into title block fields (material, part number, revision, finish)
Auto-populate revision table with change description (if available from issues)

Auto-Labeling / View Naming¶

Ensure section/detail views have labels matching company convention
Flag if NX produced ambiguous or missing labels
Suggest standard naming corrections

Post-Generation Verification¶

After NX generates: RapidDraft runs the same drawing sanity checks (dangling dimensions, missing fields, scale mismatches, required notes)
Separate "layout suggestions" from "hard errors" so generated drawings don't look incompetent

What v1 Drawing Generation Is NOT¶

Not automatic smart dimensioning from scratch — NX handles that, RapidDraft guides it
Not automatic GD&T scheme creation — dimensioning strategy is engineer's responsibility
Not choosing functional datums — that's engineering judgment
Not replacing drafting expertise — just standardizing and catching mistakes
Not a full drawing automation engine — tool is "assist" not "replace"

Output Artifacts¶

Generated/updated NX drawing (the drawing dataset in Teamcenter)
Drawing check results (punch list of issues found immediately after generation)
Review report (stored with the revision)

Feature 2: Vision-Assisted DFM Review¶

Problem It Solves¶

DFM (Design for Manufacture) is hard to do quickly and well. Design engineers often miss obvious manufacturability smells because they're focused on function. Outsourcing DFM review to manufacturing is slow; building automated rules is rigid.

v1 goal: Provide a "manufacturing buddy" that spots obvious risks quickly, without replacing real supplier expertise.

How It Works¶

Vision-assisted DFM runs after snapshot extraction and generates a standardized set of screenshots of the CAD model, then uses LLM vision to scan for common manufacturability red flags.

Key principle: Screenshots capture what a manufacturing engineer would see visually. Vision model flags things that "look risky" — not a deterministic solver, but a triage and hint system.

Scope Details: What's Included¶

Screenshot Generation¶

Standard views — isometric, orthographic projections
Section cuts — predefined cross-sections to highlight internal features
Fixed zoom and lighting for consistency across parts

Vision-Based DFM Scan¶

Flags potential risks like: - Machining risks: sharp internal corners in pockets, thin walls / fragile webs, deep narrow slots (tool deflection risk), hole-to-edge distances - Sheet metal risks: bend radius issues, holes too close to bends, fragile features - General risks: features that look hard to fixture or access, complex geometry that hints at multiple setups

Output Format¶

Potential risks listed in plain engineering language (e.g., "This looks like it will require EDM / special tooling")
Each comment references the exact screenshot that triggered it (so it's not vague)
Confidence/uncertainty tags — the tool admits when it's unsure, doesn't pretend certainty
Optional: merged into the same review report as "DFM Assistant Notes"

How Vision-DFM Fits With Deterministic DFM¶

Deterministic checks (from v0) remain the gate for things measurable: - Minimum wall thickness - Bend radius rules - Tolerance penalties - Tool access clearances

Vision-based model becomes a triage + hint system: - "Look here first" - "This feature looks risky — confirm with rules or supplier"

Together they provide both hard guardrails (rules) and soft guidance (vision hints).

What Vision-DFM Is NOT¶

Not a final pass/fail "DFM approval" — it's guidance
Not a substitute for real supplier feedback — manufacturing wisdom lives with suppliers
Not expected to be consistent on every edge case — it's helpful hints, not a rulebook
Not a replacement for engineer judgment — vision flags things, engineers decide

Output Artifacts¶

Screenshot set of the CAD model (fixed standard views for reproducibility)
Vision DFM notes (annotated per screenshot with risk flags)
Optionally merged into the same review report as "DFM Assistant Notes" section

The v1 "So What" — Why It Matters¶

With v1, you get a much tighter feedback loop:

Model → one-click NX drawing generation/update → automatic drawing checks → issues/comments → traceable report

Plus an optional visual DFM buddy that points you to risk areas before a supplier rejects it.

For design teams: - Less manual drawing work - Consistent drawings with high quality - Early warning on manufacturability

For manufacturing partners: - Cleaner, more consistent design inputs - Fewer surprises during detailed planning - Better traceability of design decisions

Implementation Priorities for v1¶

Must Have¶

One-click drawing generation from template
Title block auto-population from Teamcenter / model
Immediate drawing checks after generation
Update drawing after CAD changes detection

Should Have¶

Vision-assisted DFM screening with standardized screenshots
View naming/labeling validation
Revision table auto-update with change description

Nice to Have¶

Advanced GD&T rule suggestions (requires deep domain knowledge)
Multi-template support at scale (start with 1–2 templates)
Batch drawing generation for assemblies

Known Problems for v1 Drawing Generation¶

See Problems_and_Mitigations.md for detailed analysis of 5 hard problems: 1. One-click drawing generation that doesn't produce junk drawings 2. Template + title block mapping across companies 3. Update drawing after CAD changes without breaking associations 4. Auto-labeling / view naming that matches drafting standards 5. Keeping drawing checks credible when RapidDraft is generating

Known Problems for v1 Vision-DFM¶

See Problems_and_Mitigations.md for detailed analysis of 3 hard problems: 1. Vision-based DFM that isn't a toy (accuracy and confidence) 2. Vision DFM: "Where exactly is the problem?" (localization) 3. Mixing deterministic DFM and vision DFM without confusing the user

Success Criteria for v1¶

Drawing generation targets: - Generated drawings pass ≥80% of checks on first try (or flagged as layout decisions, not errors) - Title blocks auto-populate correctly for ≥95% of parts - Engineering team adopts drawing generation for ≥50% of new parts within 3 months - Update drawing after CAD changes preserves ≥80% of dimension associations

Vision-DFM targets: - Vision model flags real DFM risks correctly >70% of the time on test set - Zero false-positive emergencies (risks that aren't risks shouldn't appear) - Designers find flagged locations in <30 seconds of review - Vision notes clearly separated from "hard findings" in reports

Transition to v2¶

Once v1 is stable, v2 adds: - Manufacturing cost estimation — rough estimates tied to design parameters - Tolerance-driven cost insights — show how design choices drive manufacturing cost - Cost-driven DFM — manufacturability recommendations tied to cost optimization

See MVP_v2_Cost_Estimation.md for details.