优化skill，添加特征树、编辑窗口
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# Bearing housing reference
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Read this file when the request is for a bearing housing, bearing seat, bearing
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support, pillow block, flanged bearing housing, cartridge bearing holder,
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`轴承座`, `轴承支座`, `轴承座壳体`, or `带座轴承` housing.
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This reference improves first-pass geometry structure only. It does not certify
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bearing fit, tolerance class, coaxiality, lubrication, load capacity, sealing,
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casting quality, or manufacturability.
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## Object boundary
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By default, model the machined housing/seat part that supports a bearing. Do not
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model the rolling elements, cage, shaft, bolts, grease nipple, seals, or a full
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mounted-bearing assembly unless the user explicitly asks for those as separate
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parts.
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If the prompt says `bearing`, `bearing seat`, or `轴承座` without more detail,
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the semantic core is the support body with a bearing bore and mounting features.
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## Recognition
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Use this reference when the request includes:
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- English: bearing housing, bearing seat, bearing support, pillow block,
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plummer block, flanged bearing housing, cartridge bearing holder.
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- Chinese: 轴承座, 轴承支座, 轴承座壳体, 立式轴承座, 法兰轴承座, 带座轴承.
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- Adjacent intent: shaft clearance, bearing bore, bearing pocket, mounting feet,
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flange mount, bolt holes, cap, split housing, support ribs, grease port.
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## Core invariants
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A generated bearing housing should include:
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- A bearing bore or bearing pocket sized by a named bearing outer diameter.
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- A shaft clearance axis coaxial with the bearing bore.
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- Material around the bore thick enough to read as support, not just a thin ring.
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- A mounting method: base feet, flange, side lugs, or plate mount.
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- Mounting holes with symmetric placement relative to the functional datum.
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- A stable datum convention: bearing axis and mounting face are primary.
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- Edge relief: practical chamfers/fillets after major cuts.
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For a pillow-block style housing, the minimum recognizable structure is:
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- Flat base.
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- Raised bearing boss or arched support.
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- Horizontal bearing bore through the support.
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- Two base mounting holes.
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- Optional ribs connecting boss to base.
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## Default strategy
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When under-specified, generate a simple pillow-block bearing housing:
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- Bearing axis along X.
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- Flat rectangular base on the XY plane.
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- Bearing center above the base by `bearing_center_height`.
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- Cylindrical or rounded boss around the bearing bore.
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- Coaxial through bore for shaft clearance plus a larger bearing seat/pocket.
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- Two elongated or round mounting holes in the base, symmetric about the Y axis.
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- Two ribs from base to bearing boss if there is enough room.
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- Fillets/chamfers last.
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Do not default to a full assembly. Do not default to visible bearing balls. Do
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not default to a random bracket with holes but no bearing bore.
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## Common variants
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### Pillow block / plummer block
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- Base-mounted housing with horizontal bearing axis.
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- Two or four mounting holes in the base.
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- Raised central boss, arch, or saddle around the bore.
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- Optional split cap only if the user asks for split housing or cap bolts.
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### Flanged bearing housing
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- Circular, square, oval, or diamond flange around the bearing bore.
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- Bearing axis usually normal to the flange face.
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- Bolt holes arranged on a bolt circle or symmetric flange pattern.
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- Optional pilot lip or locating register on the mounting face.
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### Plate-mounted bearing seat
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- Flat or block-like plate with bearing pocket.
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- Bearing axis may be normal to the plate.
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- Mounting holes belong to the plate datum, not random locations.
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### Split bearing housing
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- Lower base and upper cap are separate parts or clearly separated bodies.
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- Cap bolts and split plane must be represented if split form is requested.
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- If source-level assembly is not needed, a simplified monolithic split-line
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groove is acceptable, but label the assumption.
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### Cartridge bearing holder
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- Cylindrical sleeve-like body with flange or clamp features.
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- Bearing pocket and shaft clearance are coaxial.
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- Include retaining shoulder or snap-ring groove when requested.
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## Required parameter roles
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Use semantic parameters before modeling:
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- `bearing_outer_diameter`
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- `bearing_width`
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- `shaft_diameter`
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- `shaft_clearance_diameter`
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- `bearing_bore_diameter`
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- `bearing_bore_depth`
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- `bearing_center_height`
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- `wall_thickness`
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- `base_length`
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- `base_width`
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- `base_thickness`
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- `mount_hole_diameter`
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- `mount_hole_spacing_x`
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- `mount_hole_spacing_y`
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- `boss_outer_diameter`
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- `boss_width`
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- `flange_outer_diameter`
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- `flange_thickness`
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- `bolt_count`
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- `bolt_circle_diameter`
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- `rib_thickness`
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- `fillet_radius`
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Only define optional parameters used by the selected variant.
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## Feature roles to plan explicitly
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Use these roles in the CAD brief and source structure:
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- `mounting_base`
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- `bearing_boss`
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- `bearing_seat_bore`
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- `shaft_clearance_bore`
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- `mounting_holes`
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- `flange_mount`
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- `pilot_lip`
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- `support_ribs`
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- `split_cap`
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- `cap_bolts`
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- `retaining_groove`
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- `grease_port`
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- `datum_mounting_face`
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- `datum_bearing_axis`
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## Construction sequence
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1. Select the variant from the prompt. If no variant is specified, use pillow
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block.
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2. Define the datum system:
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- pillow block: base bottom face is Z=0; bearing axis is X.
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- flanged housing: flange mounting face is the primary plane; bore axis is
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normal to it.
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3. Build the base, flange, or plate body first.
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4. Add the bearing boss/support body and ensure it intersects the base/flange.
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5. Cut the shaft clearance bore and bearing seat coaxially.
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6. Cut mounting holes using symmetric positions or bolt circle pattern.
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7. Add ribs only when they intersect both base/flange and boss.
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8. Add optional split line, cap features, grease port, retaining groove, or pilot
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lip if requested.
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9. Apply chamfers and fillets last.
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For through bores and mounting holes, overshoot cutting tools through the target
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faces. Avoid coplanar cutting tools.
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## Common failures to prevent
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- A generic bracket with no bearing bore.
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- A ring with no mounting method.
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- Bearing bore and shaft clearance not coaxial.
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- Missing bearing center height in pillow-block form.
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- Mounting holes asymmetric when the variant implies symmetry.
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- Ribs that float or only touch at an edge.
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- Base thinner than mounting-hole diameter without reason.
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- Side openings or decorative slots with no bearing-seat purpose.
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- Generating balls, cages, shafts, fasteners, or seals when the user asked only
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for the housing.
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- Confusing bearing housing with shaft, flange, or motor mount.
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## Validation targets
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After generation, inspect or reason about:
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- Bearing bore diameter/depth and shaft clearance diameter.
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- Coaxiality of bearing bore and shaft clearance.
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- Bearing center height above mounting face for pillow-block form.
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- Base or flange dimensions and thickness.
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- Mounting-hole count, size, and symmetry or bolt-circle diameter.
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- Boss wall thickness around bearing seat.
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- Rib attachment to both base/flange and boss when ribs exist.
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- Single connected solid unless the user requested an assembly or split housing.
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# Cup / mug reference
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Read this file when the request is for a drinking vessel: cup, mug, water cup,
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tumbler, drinking cup, tea cup, coffee cup, handled cup, travel mug,
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`水杯`, `杯子`, `马克杯`, or `茶杯`.
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This reference improves first-pass geometry structure only. It does not certify
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food safety, insulation, thermal performance, ergonomics, leak resistance, or
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manufacturability.
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## Recognition
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Use this reference when the prompt describes a vessel whose primary geometry is
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an open container for liquid. Distinguish the common cases:
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- `cup` / `水杯` / `drinking cup`: default open cup, usually without handle.
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- `mug` / `马克杯` / `handled cup`: open cup with one handle on the side.
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- `tumbler`: taller cup, optionally with a lid, usually without handle.
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- `travel mug`: handled cup with a lid; may be an assembly if the lid is modeled.
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- `bottle`: do not use this reference unless the user explicitly wants a cup-like
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bottle or bottle mug hybrid.
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If the prompt does not mention a handle, do not add one by default.
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## Core invariants
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A recognizable cup should have:
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- An open top.
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- A hollow interior cavity.
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- A continuous side wall.
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- A closed bottom.
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- A continuous rim at the opening.
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- A stable standing base or foot ring.
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A handled mug should add:
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- Exactly one main handle unless the prompt requests multiple handles.
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- The handle mounted on one side of the cup body.
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- Two attachment regions that intersect the cup body solidly.
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- A clear gap between handle and cup body so the hand can pass through.
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- A loop, C-shape, or arched form that reads as a graspable handle, not a fin,
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tab, rib, or broken bracket.
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## Default strategy
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When the request is just `cup` or `水杯`, generate a simple open cup with no
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handle:
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- Revolved outer body.
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- Hollow interior.
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- Closed bottom.
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- Slight outward taper or cylindrical wall.
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- Small rim radius or lip.
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- Optional foot ring.
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When the request is `mug`, `马克杯`, or `handled cup`, generate the same cup
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body plus one handle.
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## Handle strategy
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The handle is the failure-prone part, so make it explicit:
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- The handle must be a single continuous shape.
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- It should attach to the cup body at two distinct points on the same side.
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- The two attachment points should be vertically separated and usually near the
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upper-middle and lower-middle height of the cup.
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- The handle should project outward far enough to create finger clearance, but
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not so far that it looks like a secondary looped part.
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- The handle cross-section should be rounded or softly rectangular, not a thin
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blade.
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- The handle opening should remain open; do not fill the inside of the loop with
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a solid web unless the prompt asks for a closed grip.
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- Avoid multiple disconnected handle fragments, fins, or stray tabs.
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- The handle should not attach at the rim edge only; it should engage the side
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wall with real thickness.
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## Required parameter roles
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Use semantic parameters before modeling:
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- `height`
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- `top_outer_diameter`
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- `bottom_outer_diameter`
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- `wall_thickness`
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- `bottom_thickness`
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- `inner_depth`
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- `rim_radius`
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- `rim_thickness`
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- `foot_ring_diameter`
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- `foot_ring_height`
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- `handle_thickness`
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- `handle_width`
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- `handle_clearance`
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- `handle_projection`
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- `handle_attach_height_top`
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- `handle_attach_height_bottom`
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- `handle_attach_offset`
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- `handle_loop_radius`
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- `handle_loop_height`
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Only define the handle parameters when a handle is requested.
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## Feature roles to plan explicitly
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- `cup_body`
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- `inner_cavity`
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- `rim`
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- `base`
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- `foot_ring`
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- `handle`
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- `handle_attachment_upper`
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- `handle_attachment_lower`
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- `handle_clearance`
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- `lid_seat` or `lid_interface` if a lid is requested
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## Construction sequence
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1. Build the cup body first using revolve or a smooth profile sweep.
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2. Hollow the interior while preserving the bottom thickness.
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3. Add the rim and optional foot ring.
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4. If a handle is requested, place it on one side only.
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5. Model the handle as one continuous loop or arched solid with two clear
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attachment zones.
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6. Fuse the handle to the cup body so it reads as one coherent mug, not as a set
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of touching tabs.
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7. Add a lid only if the prompt explicitly requests a covered container.
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8. Apply final fillets/chamfers last.
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For the handle, the tool or sweep profile should overshoot into the cup wall at
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both attachment regions. Avoid tangent-only contact.
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## Common failures to prevent
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- Solid cup with no hollow interior.
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- Cup with no bottom.
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- Cup body turned into a bottle or vase shape when the prompt says cup.
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- Handle omitted when the prompt says mug or handled cup.
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- Handle added when the prompt only says cup or water cup.
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- Handle split into two disconnected pieces.
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- Handle as a tiny fin, tab, or shard instead of a loop.
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- Handle attached only at the rim edge or at one point.
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- Handle crossing through the cup cavity or cutting into the interior wall.
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- Multiple handles unless explicitly requested.
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- Lid generated when the prompt did not ask for one.
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## Validation targets
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After generation, inspect or reason about:
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- Opening is on top and remains open.
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- Interior cavity exists and is connected to the opening.
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- Bottom is closed and has nonzero thickness.
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- Rim is continuous.
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- If a handle exists, exactly one main handle is present.
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- Handle has two attachment regions on the same side.
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- Handle has sufficient clearance from the cup wall.
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- Handle does not appear as a broken fragment or a separate brace.
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- The model is a single connected solid unless a lid or travel-mug assembly is
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explicitly requested.
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