88 lines
3.1 KiB
Markdown
88 lines
3.1 KiB
Markdown
# Slotted Adjustment Feature Functional Skill
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## When to use
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- A plate, bracket, clamp, guide, or mounting part needs an elongated slot for positional adjustment, clearance, sliding, or alignment.
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- The request mentions slot, slotted hole, adjustment slot, elongated hole, guide slot, keyway-like slot, or obround cutout.
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## Do not use when
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- The feature is a simple round hole with no adjustment function.
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- The slot is actually a shaft keyway or turned groove; use a shaft/keyway-specific rule if available.
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- The slot is decorative and not tied to fastening, travel, or clearance.
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## Recognition features
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- Elongated hole with two semicircular ends and straight sides.
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- Slot located on a flat plate/bracket face or through a wall.
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- Often paired, mirrored, or patterned.
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- Can coexist with counterbored holes, threaded holes, ribs, or edge chamfers.
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## Core invariants
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- Slot width should match the fastener/shaft clearance role.
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- Slot length defines adjustment travel and must be longer than the fastener diameter.
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- Keep end radii equal to half the slot width for manufacturable milled/slot features.
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- Dimension slots from datums and centerlines.
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- Cut slots after the base body exists and before final chamfers/fillets.
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## Parameter roles
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- `slot_width` defines cutter or fastener clearance.
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- `slot_length` defines adjustment range.
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- `end_radius` is usually `slot_width / 2`.
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- `slot_center`, `slot_angle`, and `edge_margin` locate the slot.
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- `slot_depth` or `through_all` defines end condition.
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## Construction sequence
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1. Select the planar face or reference plane where the slot starts.
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2. Sketch an obround slot from centerline, length, and width.
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3. Cut through all or to the required depth.
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4. Pattern or mirror the slot if repeated.
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5. Add small chamfers to slot edges after the cut is complete.
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## Common failures
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- Modeling a slot as a rectangle with sharp internal corners.
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- Making the slot length equal to the hole diameter, removing adjustment function.
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- Placing slots without enough wall material at the ends.
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- Confusing a bracket adjustment slot with a shaft keyway or revolved groove.
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## Evidence summary
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- Latest run evidence: 38 accepted functional insights matched slot, slotted adjustment, guide slot, or slot/cutout behavior.
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- Strong repeated names include `use_slots_for_adjustment`, `use_cut_extrude_for_holes_and_slots`, `central_slot_for_alignment`, and `cut_slots_for_adjustment`.
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- Frequent operations in the latest run: Cut, Extrusion, LinearPattern, MirrorPattern, Chamfer.
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- Source model examples: 004764, 005640, 006514, 011853, 026940, 043134, 058682, 096676, 106216, 156844, 163197, 185756, 199739, 213507, 240416.
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- Source: CAD-SkillX offline review of SCAD58 descriptions, STEP summaries, and SolidWorks feature evidence.
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## Retrieval metadata
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Triggers:
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- `slot`
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- `slotted hole`
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- `adjustment slot`
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- `elongated hole`
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- `guide slot`
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Secondary triggers:
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- `obround`
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- `clearance slot`
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- `mounting adjustment`
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- `sliding`
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- `alignment slot`
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Operation triggers:
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- `sketch slot`
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- `cut extrude slot`
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- `mirror slot`
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- `linear pattern slot`
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- `chamfer slot edge`
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Exclusions:
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- `round hole only`
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- `shaft keyway`
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- `revolved groove`
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- `decorative cutout`
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