77 lines
2.1 KiB
Markdown
77 lines
2.1 KiB
Markdown
# Plate Like Reference
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## When to read this file
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Read this reference when the request matches these triggers:
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- `bracket`
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- `plate`
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- `支架`
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- `板`
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## Object boundary
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Use this reference to improve first-pass CAD modeling structure. It is not a validator, factory, or engineering certification. Do not model adjacent assemblies unless the user explicitly requests them.
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## Recognition
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This node represents `mechanical_part.plate_like` in the generated taxonomy. It was mined from 2 source models.
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## Core invariants
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- The main body is a flat prismatic plate.
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- Holes, slots, and pockets should be positioned from datum edges or centerlines.
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- Thickness and edge treatment should be named.
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## Common variants
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- Keep variants driven by the user prompt and source evidence.
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- Prefer adding a child variant skill when one branch becomes too specific.
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- Do not collapse all examples into one fixed template.
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## Required parameter roles
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- `datum_edges`
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- `flat_body`
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- `holes_or_slots`
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## Feature roles
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- `datum_edges`
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- `flat_body`
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- `holes_or_slots`
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## Operation / construction sequence
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1. Build the primary base solid first.
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2. Add major bosses or protrusions second.
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3. Apply subtractive cuts, holes, pockets, and slots after the base is valid.
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4. Create repeated features through patterns rather than independent ad hoc geometry.
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5. Apply fillets and chamfers last.
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## Common failures to prevent
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- Unnamed magic dimensions hidden inside geometry calls.
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- Decorative features with no functional role.
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- Fillets or chamfers applied before major cuts.
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- Claiming engineering performance or standard compliance from reference guidance alone.
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## Validation targets
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- The generated model contains the core invariants above.
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- Major feature roles are visible or represented by named parameters.
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- Repeated features have consistent count, spacing, and datum relationship.
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- The output is a valid solid or explicitly requested assembly.
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## Exclusions
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- `shaft`
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- `vessel`
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## Source evidence summary
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- Source sample count: 2
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- Sample ids: 000124, 001082
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- Operation evidence: HoleWzd: 4, Chamfer: 4, Cut: 4, Extrusion: 2, LPattern: 2
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- Taxonomy confidence: 0.74
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