92 lines
3.8 KiB
Markdown
92 lines
3.8 KiB
Markdown
# Axisymmetric Revolve Strategy Functional Skill
|
|
|
|
## When to use
|
|
|
|
- A part or major feature is rotationally symmetric around an axis: shaft, stepped shaft, flange hub, bushing, washer, spacer, sleeve, pulley-like blank, turned knob, or nut blank.
|
|
- The profile contains steps, shoulders, grooves, tapers, spherical/rounded transitions, or coaxial bores that are easier to define in a half-section.
|
|
|
|
## Do not use when
|
|
|
|
- The body is a simple constant-diameter cylinder that can be created by one circle extrusion.
|
|
- The part is primarily prismatic with only small cylindrical holes.
|
|
- The geometry is freeform, non-axisymmetric, or has asymmetric lugs as the dominant feature.
|
|
|
|
## Recognition features
|
|
|
|
- Dominant central axis and circular cross-sections.
|
|
- SolidWorks features such as Revolution, Revolve, RevCut, or revolved thread/groove cuts.
|
|
- STEP evidence with multiple cylindrical, conical, or toroidal surfaces sharing an axis.
|
|
- Functional roles include shafting, spacing, sealing, rotation, alignment, or fastening.
|
|
|
|
## Core invariants
|
|
|
|
- Sketch the axial cross-section on a plane that contains the rotation axis.
|
|
- Keep the revolved profile on one side of the axis unless the CAD kernel expects a centerline profile.
|
|
- Use one 360-degree revolve for the main axisymmetric body where possible.
|
|
- Use revolved cuts for coaxial grooves, internal thread reliefs, and circular recesses.
|
|
- Add asymmetric holes, flats, keyways, or bolt patterns after the revolved body is complete.
|
|
|
|
## Parameter roles
|
|
|
|
- `axis` defines the rotation centerline.
|
|
- `profile_points` define the half-section outline.
|
|
- `diameters` and `axial_lengths` define steps and shoulders.
|
|
- `revolve_angle` is usually 360 degrees for a complete solid.
|
|
- `groove_width`, `groove_depth`, `taper_angle`, and `fillet_radius` define turned details.
|
|
|
|
## Construction sequence
|
|
|
|
1. Define the central axis and an axial sketch plane.
|
|
2. Draw the half-section profile with all major diameters, steps, shoulders, and bore boundaries.
|
|
3. Revolve the closed profile 360 degrees to create the main body.
|
|
4. Use revolved cuts for grooves, recesses, or thread reliefs that are also axisymmetric.
|
|
5. Add non-axisymmetric secondary features such as flats, slots, keyways, or bolt holes.
|
|
6. Apply chamfers and fillets at ends and shoulders last.
|
|
|
|
## Common failures
|
|
|
|
- Extruding several cylinders separately and leaving seams or separate bodies.
|
|
- Revolving a profile that crosses the axis and creates invalid self-intersections.
|
|
- Forgetting the construction axis or using an arbitrary edge as axis.
|
|
- Adding asymmetric features before the revolve and making the base profile ambiguous.
|
|
- Using revolve for a simple plain cylinder when extrusion is clearer.
|
|
|
|
## Evidence summary
|
|
|
|
- Latest run evidence: 105 accepted functional insights matched axisymmetric revolve and revolved-cut strategies.
|
|
- Strong repeated names include `use_revolve_for_axisymmetric_parts`, `use_revolve_for_rotational_parts`, `use_revolve_for_axisymmetric_body`, and `use_revolution_for_axisymmetric_features`.
|
|
- Frequent operations in the latest run: Revolution, RevCut, Cut, Chamfer, Fillet, HoleWzd.
|
|
- Source model examples: 001563, 001957, 009934, 010137, 025245, 053895, 080683, 086232, 094412, 135604, 144887, 162241, 173716, 218803, 225038.
|
|
- Source: CAD-SkillX offline review of SCAD58 descriptions, STEP summaries, and SolidWorks feature evidence.
|
|
|
|
## Retrieval metadata
|
|
|
|
Triggers:
|
|
- `axisymmetric`
|
|
- `revolve`
|
|
- `revolved body`
|
|
- `rotational part`
|
|
- `turned part`
|
|
|
|
Secondary triggers:
|
|
- `shaft`
|
|
- `bushing`
|
|
- `washer`
|
|
- `sleeve`
|
|
- `flange hub`
|
|
- `stepped diameter`
|
|
- `groove`
|
|
|
|
Operation triggers:
|
|
- `sketch half profile`
|
|
- `revolve profile`
|
|
- `revolved cut`
|
|
- `define construction axis`
|
|
- `chamfer shoulders`
|
|
|
|
Exclusions:
|
|
- `simple extruded cylinder`
|
|
- `rectangular plate`
|
|
- `mounting bracket`
|
|
- `freeform surface`
|