优化skill，添加特征树、编辑窗口

2026-08-07 17:44:12 +08:00
parent 35e18ca956
commit 5fbcf2c0b8
70 changed files with 13076 additions and 465 deletions
@@ -0,0 +1,91 @@
+# Hexagonal Nut Planning Skill
+
+## When to use
+
+- The request describes a hex nut, hexagonal nut, machined nut, nut-like fastener, or hexagonal threaded insert.
+- The key features are wrench flats, a central threaded bore, and chamfered faces/edges.
+
+## Do not use when
+
+- The part is a bolt, screw, socket head cap screw, threaded rod, wing nut, cap nut, or flange nut unless the prompt explicitly asks for that variant.
+- The hexagon is only a decorative grip on another part.
+- The threaded feature is external rather than an internal bore.
+
+## Recognition features
+
+- Six flat wrench faces or hexagonal prism envelope.
+- Central internal threaded hole coaxial with the nut thickness.
+- Chamfers on top and bottom openings and on hex edges.
+- Optional counterbore, lead-in chamfer, or relieved thread entry.
+
+## Core invariants
+
+- Keep the threaded bore centered through the hex body.
+- Preserve the hex across-flats size separately from thread size and thickness.
+- Model chamfers as functional lead-ins and edge breaks, not as random bevels.
+- Represent internal thread intent using a threaded hole, thread callout, or helical/revolved cut only when required by output format.
+- Do not generate the mating bolt unless requested.
+
+## Parameter roles
+
+- `across_flats` defines wrench size.
+- `thickness` defines nut height.
+- `thread_size`, `thread_diameter`, and `thread_depth` define the central bore.
+- `bore_diameter` defines the pre-thread or clearance hole if thread geometry is abstracted.
+- `face_chamfer` and `edge_chamfer` define lead-in and deburring.
+
+## Construction sequence
+
+1. Create the hexagonal body as a hex extrusion or by cutting flats from a revolved/chamfered blank.
+2. Define the central axis through the nut.
+3. Create the central bore or threaded hole through the body.
+4. Add thread representation or thread callout if the CAD output supports it.
+5. Add top/bottom lead-in chamfers and small edge chamfers.
+6. Verify the hex flats remain planar and the bore remains coaxial.
+
+## Common failures
+
+- Producing a bolt or screw instead of a nut.
+- Forgetting the central threaded bore.
+- Placing the bore off-center relative to the hex body.
+- Making the chamfers so large that wrench flats disappear.
+- Treating a flange nut, cap nut, or wing nut as a plain hex nut.
+
+## Evidence summary
+
+- Latest run evidence: 25 accepted planning insights matched hex nut or nut-like threaded fastener descriptions.
+- Strong repeated names include `plan_hex_nut`, `revolved_hex_nut_with_internal_thread`, `hex_nut_construction`, and `plan_hexagonal_nut_with_threaded_bore`.
+- Frequent operations in the latest run: Revolution, Extrusion, Cut, RevCut, HoleWzd, Chamfer.
+- Source model examples: 009934, 010137, 052867, 066148, 067249, 135604, 138372, 150622, 200147, 204805, 222550, 225767, 231397, 238840.
+- Source: CAD-SkillX offline review of SCAD58 descriptions, STEP summaries, and SolidWorks feature evidence.
+
+## Retrieval metadata
+
+Triggers:
+- `hex nut`
+- `hexagonal nut`
+- `nut`
+- `threaded nut`
+- `hexagonal threaded insert`
+
+Secondary triggers:
+- `internal thread`
+- `central threaded bore`
+- `wrench flats`
+- `across flats`
+- `chamfered nut`
+
+Operation triggers:
+- `extrude hexagon`
+- `cut central bore`
+- `hole wizard threaded hole`
+- `revolved cut thread`
+- `chamfer faces`
+
+Exclusions:
+- `bolt`
+- `screw`
+- `threaded shaft`
+- `wing nut`
+- `cap nut`
+- `flange nut`