B_CNC — CNC Machining DFM¶

Trigger: Activated by the selected manufacturing process Rules in pack: 25

Milling and turning manufacturability checks from CAD and linked specs.

Distribution Inside This Pack¶

Severity	Rules
major	23
critical	2

Logic type	Rules
Deterministic	19
Hybrid	6

Applies to	Rules
CAD part	25
CAD hole feature	5
CAD wall feature	3
CAD pocket feature	3
CAD thread feature	1

Rules¶

Rule	Title	Severity	Logic	Applies to	References
`CNC-001`	Min wall thickness check vs material class (thin walls → vibration/warp risk)	major	Deterministic	CAD part, CAD wall feature	`REF-CNC-1`, `REF-CNC-2`
`CNC-002`	Deep holes: recommended depth ~4×D, hard max ~10×D (flag beyond)	major	Deterministic	CAD part, CAD hole feature	`REF-CNC-1`
`CNC-003`	Prefer standard drill diameters (non-standard → milling/time)	major	Deterministic	CAD part	`REF-CNC-1`
`CNC-004`	Blind drilled holes: conical floor expected (flag if flat-bottom functional)	major	Deterministic	CAD part, CAD hole feature	`REF-CNC-1`
`CNC-005`	Pocket internal corners: small radius → small tool → depth limits/cost	major	Deterministic	CAD part, CAD pocket feature	`REF-CNC-2`
`CNC-006`	Prefer largest internal radii possible (cost + finish benefit	major	Deterministic	CAD part	`REF-CNC-3`
`CNC-007`	Avoid “raised islands/bosses” if they require removing whole face volume (cost driver)	major	Deterministic	CAD part, CAD hole feature	`REF-CNC-2`
`CNC-008`	Suggest inserts (studs/dowels) vs raised machined features when feasible	major	Hybrid	CAD part	`REF-CNC-2`
`CNC-009`	Text/engraving: small cutters increase time	major	Deterministic	CAD part	`REF-CNC-2`
`CNC-010`	Corner radius consistency across pockets (tool reuse reduces time)	major	Deterministic	CAD part, CAD pocket feature	`REF-CNC-3`, `REF-CNC-2`
`CNC-011`	Tool access: internal corner smaller than tool radius → redesign (relief/teardrop)	major	Deterministic	CAD part	`REF-CNC-2`
`CNC-012`	Thin ribs/bosses: flag for deflection (recommend thicker or support)	major	Deterministic	CAD part	`REF-CNC-2`, `REF-CNC-1`
`CNC-013`	Placeholder: Feature accessibility check for long-reach tools in deep cavities	major	Deterministic	CAD part	`REF-CNC-2`, `REF-CNC-3`
`CNC-014`	Placeholder: Multi-setup requirement warning when critical features are not reachable in one setup	critical	Deterministic	CAD part	`REF-CNC-2`, `REF-FIX-1`
`CNC-020`	Tight tolerance on thin wall features → likely scrap risk	major	Hybrid	CAD part, CAD wall feature	`REF-CNC-1`
`CNC-021`	Tight positional tolerances without datum strategy → inspection/machining risk	major	Hybrid	CAD part	`REF-GPS-2`
`CNC-022`	Surface finish Ra very low on large area → time/cost	major	Hybrid	CAD part	`REF-GPS-5`, `REF-CNC-2`
`CNC-023`	Threaded holes too close to edge → breakout risk	major	Hybrid	CAD part, CAD hole feature, CAD thread feature	`REF-CNC-1`
`CNC-024`	Deep pocket with small corner radius → cost driver	major	Hybrid	CAD part, CAD pocket feature	`REF-CNC-2`, `REF-CNC-3`
`CNC-025`	Part size exceeds typical machine envelope (flag for special setup/fixture)	major	Deterministic	CAD part	`REF-CNC-4`
`TURN-001`	Turned walls thinner than guideline risk failure	major	Deterministic	CAD part, CAD wall feature	`REF-CNC-4`
`TURN-002`	Sharp inside corners become radiused naturally	critical	Deterministic	CAD part	`REF-CNC-4`
`TURN-003`	Turned outside corners usually chamfered	major	Deterministic	CAD part	`REF-CNC-4`
`TURN-004`	Min hole sizes for turning (axial/radial) — flag below	major	Deterministic	CAD part, CAD hole feature	`REF-CNC-4`
`TURN-005`	Long slender turned sections: flag chatter risk	major	Deterministic	CAD part	`REF-CNC-4`

Sources¶

D:\02_Code\36_RapidDraft_DFMBenchmark_ExpertMode\server\dfm\manifest.json
D:\02_Code\36_RapidDraft_DFMBenchmark_ExpertMode\server\dfm\rule_library.json
D:\02_Code\36_RapidDraft_DFMBenchmark_ExpertMode\server\dfm\references.json
D:\02_Code\36_RapidDraft_DFMBenchmark_ExpertMode\server\dfm\process_classifier.json
D:\02_Code\36_RapidDraft_DFMBenchmark_ExpertMode\server\dfm\overlays.json
D:\02_Code\36_RapidDraft_DFMBenchmark_ExpertMode\server\dfm\roles.json
D:\02_Code\36_RapidDraft_DFMBenchmark_ExpertMode\server\dfm\report_templates.json
D:\02_Code\36_RapidDraft_DFMBenchmark_ExpertMode\server\dfm\ui_bindings.json