schema_version: 1 name: fusion-16418-recon intent: 'Reconstruct the mechanical part shown in the attached renders, sections and dimension sheet as editable, parameterized KCL in the part''s own frame (bbox min [-10.242, 0.0, -10.242], size [20.483, 4.0, 20.483] mm). Declare every hole, boss and shaft as an acceptance cylinder and every planar face level as a named face; one solid; export STEP and STL. Held-out: the pipeline is frozen, the reference CAD is evaluator-only.' units: length: mm angle: deg material: null density_kg_m3: null process: null release_status: reconstruction frame: origin: Intersection of the gear / hex / bore axis with the circular face at y = 0. This is [0,0,0] in the dimension sheet's native frame (bbox centred in x and z, sitting on y = 0). axes: x: '+x is the sheet +x: from the axis toward the +x envelope (tooth tip at x = +10.242). In front.png, +x is to the right. A hex flat is perpendicular to +x at x = +3.463 (pocket) and x = +4.332 (boss).' y: +y is the sheet +y, from the circular face toward the hexagonal boss. Disc occupies y = 0..3; boss cap is y = 4. In top.png, +y is up. z: +z is the sheet +z, completing a right-handed frame (x cross y = z). In front.png, +z is up. The hex is pointy-top in this view (vertices on ±z). datums: - name: A description: Circular face at y = 0, outward normal −y. Primary seating face opposite the hex boss. - name: B description: 'Common axis of the Ø3.1 bore, the hex socket and the tooth pattern: x = z = 0, directed +y.' - name: C description: 'Hex clocking: pointy-top hex with flats parallel to the YZ plane (across-flats along x). Tooth 0 has its tip-fillet axis on +x.' envelope: min: [-10.242, 0.0, -10.242] max: [10.242, 4.0, 10.242] tolerance: 0.05 parameters: - name: envelopeMinX value: -10.242 unit: mm provenance: stated tolerance: 0.01 source: 'sources/dimension-sheet.md — Envelope and mass properties: bbox min [-10.242, 0.0, -10.242]' description: Minimum x of the axis-aligned envelope; a tooth tip fillet reaches this station. - name: envelopeMinY value: 0.0 unit: mm provenance: stated tolerance: 0.01 source: 'sources/dimension-sheet.md — Envelope and mass properties: bbox min y = 0.0; axis-aligned face y = 0' description: Circular face opposite the hex boss (datum A). - name: envelopeMinZ value: -10.242 unit: mm provenance: stated tolerance: 0.01 source: 'sources/dimension-sheet.md — Envelope and mass properties: bbox min [-10.242, 0.0, -10.242]' description: Minimum z of the axis-aligned envelope. - name: envelopeSizeX value: 20.483 unit: mm provenance: stated tolerance: 0.01 source: 'sources/dimension-sheet.md — Envelope and mass properties: size [20.483, 4.0, 20.483]' description: Stated x extent. 2*10.242 = 20.484; the 0.001 mm rounding is in open_questions. - name: envelopeSizeY value: 4.0 unit: mm provenance: stated tolerance: 0.01 source: 'sources/dimension-sheet.md — Envelope and mass properties: size y = 4.0; face y = 4' description: Overall height from the circular face to the hex-boss cap. Edit grows the boss in +y. edit_test: delta: 1.0 expect: volume_delta: 23.38 direction: increase tolerance_rel: 0.02 bbox_delta: [0.0, 1.0, 0.0] sweep: values: [3.5, 4.0, 5.0] infeasible_deltas: [-4.0] - name: envelopeSizeZ value: 20.483 unit: mm provenance: stated tolerance: 0.01 source: 'sources/dimension-sheet.md — Envelope and mass properties: size [20.483, 4.0, 20.483]' description: Stated z extent; same 0.001 mm rounding as envelopeSizeX. - name: discThickness value: 3.0 unit: mm provenance: stated tolerance: 0.01 source: sources/dimension-sheet.md — face +y at y = 3; pin Ø19 and Ø0.2 extent 0 .. 3 description: Toothed disc occupies y = envelopeMinY .. envelopeMinY+discThickness. - name: hexFloorY value: 1.0 unit: mm provenance: stated tolerance: 0.01 source: sources/dimension-sheet.md — axis-aligned face +y at y = 1, area 34.02 description: Floor of the hexagonal socket. Edit lowers this floor into the disc. edit_test: delta: -0.2 expect: volume_delta: -6.804 direction: decrease tolerance_rel: 0.02 bbox_delta: [0.0, 0.0, 0.0] sweep: values: [0.6, 1.0, 1.4] infeasible_deltas: [-1.2, 3.1] - name: hexPocketFlat value: 3.463 unit: mm provenance: stated tolerance: 0.01 source: sources/dimension-sheet.md — axis-aligned faces x = ±3.463, area 12 each description: Inner hex across-flats half-width (pointy-top hex, flats parallel to YZ). - name: hexBossFlat value: 4.332 unit: mm provenance: stated tolerance: 0.01 source: sources/dimension-sheet.md — axis-aligned faces x = ±4.332, area 5 each description: Outer hex-boss across-flats half-width. - name: hexPocketVertex value: 4.0 unit: mm provenance: stated tolerance: 0.02 source: 'sources/dimension-sheet.md — inclined planes: points (0.003, 3, 4.0) and (-0.003, 3, -4.0)' description: Inner hex vertex radius (pointy-top). Plane-table x offsets of 0.003 mm are extractor noise. - name: hexBossVertex value: 5.0 unit: mm provenance: stated tolerance: 0.02 source: 'sources/dimension-sheet.md — inclined planes: points (0.003, 3, 5.0) and (-0.003, 3, -5.0)' description: Outer hex-boss vertex radius (pointy-top). - name: boreDiameter value: 3.1 unit: mm provenance: stated tolerance: 0.02 source: 'sources/dimension-sheet.md — cylindrical features: hole Ø3.1; counts hole Ø3.1: 1' description: Through-hole in the 1 mm floor under the hex socket. - name: boreLength value: 1.0 unit: mm provenance: stated tolerance: 0.02 source: sources/dimension-sheet.md — hole Ø3.1 extent 0 .. 1 from [0,0,0], length 1 description: Axial length of the cylindrical bore; equals hexFloorY at the stated values. - name: rootDiameter value: 19.0 unit: mm provenance: stated tolerance: 0.02 source: 'sources/dimension-sheet.md — cylindrical features: pin Ø19, partial, length 3; counts pin Ø19.0: 1' description: Dedendum cylinder of the tooth spaces, y = 0 .. 3. - name: tipFilletDiameter value: 0.2 unit: mm provenance: stated tolerance: 0.02 source: 'sources/dimension-sheet.md — 36 pins Ø0.2, partial, length 3; counts pin Ø0.2: 36' description: Rounded tip of each tooth. - name: tipCircleRadius value: 10.142 unit: mm provenance: stated tolerance: 0.02 source: sources/dimension-sheet.md — Ø0.2 pin axes, e.g. [10.142, 0, 0] and [0, 0, ±10.142] description: Circle through the 36 tip-fillet axes. - name: toothCount value: 36 unit: '' provenance: stated tolerance: 1.0e-06 source: 'sources/dimension-sheet.md — counts pin Ø0.2: 36; front.png and section-y2.png tooth count' description: Integer tooth count; one tip fillet per tooth. - name: toothPhase value: 0.0 unit: deg provenance: stated tolerance: 0.05 source: sources/dimension-sheet.md — tip pin at [10.142, 1.5, 0.0]; front.png tooth on +x and +z description: Tip-fillet centre angle of tooth 0, from +x toward +z about +y. - name: hubHeight value: 1.0 unit: mm provenance: derived tolerance: 0.01 formula: envelopeSizeY - discThickness description: Hex-boss height above the disc top. - name: hexPocketDepth value: 3.0 unit: mm provenance: derived tolerance: 0.01 formula: envelopeSizeY - hexFloorY description: Hex socket from the floor through the boss cap. - name: hexPocketAcross value: 6.926 unit: mm provenance: derived tolerance: 0.02 formula: 2 * hexPocketFlat description: Inner hex across-flats. - name: hexBossAcross value: 8.664 unit: mm provenance: derived tolerance: 0.02 formula: 2 * hexBossFlat description: Outer hex across-flats. - name: boreRadius value: 1.55 unit: mm provenance: derived tolerance: 0.01 formula: boreDiameter / 2 description: Bore radius. - name: rootRadius value: 9.5 unit: mm provenance: derived tolerance: 0.01 formula: rootDiameter / 2 description: Dedendum radius. - name: tipFilletRadius value: 0.1 unit: mm provenance: derived tolerance: 0.01 formula: tipFilletDiameter / 2 description: Tooth-tip fillet radius. - name: tipOuterRadius value: 10.242 unit: mm provenance: derived tolerance: 0.02 formula: tipCircleRadius + tipFilletRadius description: Addendum radius; equals |envelope min/max| on x and z. - name: toothPitchDeg value: 10.0 unit: deg provenance: derived tolerance: 0.01 formula: 360 / toothCount description: Angular pitch. Sheet tip axes lie on this grid within 0.004 deg. - name: gearModule value: 0.569 unit: mm provenance: inferred tolerance: 0.05 rationale: No module, pitch diameter or pressure angle is stated. 2*tipOuterRadius/toothCount = 0.569 mm is only the inspector tooth-count threshold (tipRadius - 0.6*module stays on the tooth body, above the Ø19 root). It is not a claim that the teeth are standard involute of this module. description: Counting-aid module for acceptance.gears; tooth form remains an open question. features: - id: toothedDisc kind: extrude description: 36-tooth disc from y=0 to y=3, outer envelope tipOuterRadius, root cylinder Ø19. parameters: - discThickness - envelopeMinY - rootDiameter - tipCircleRadius - tipFilletDiameter - toothCount - toothPhase - envelopeSizeX - envelopeSizeZ count: 36 verify: - method: bbox - method: solid points: - [6.0, 1.5, 0.0] - method: section section: y2 - method: face face: discBottom - method: face face: discTop - method: cylinder cylinder: rootCylinder - method: dimension dimension: spanX - method: dimension dimension: spanZ - id: hexBoss kind: boss description: Pointy-top hexagonal boss on the disc, y=3..4, vertex radius 5, flats at x=±4.332. parameters: - hexBossFlat - hexBossVertex - hexBossAcross - hubHeight - discThickness - envelopeSizeY verify: - method: face face: hexBossTop - method: face face: hexBossLeft - method: face face: hexBossRight - method: plane plane: hexBoss60 - method: plane plane: hexBoss120 - method: plane plane: hexBoss240 - method: plane plane: hexBoss300 - method: solid points: - [3.9, 3.5, 0.0] - method: dimension dimension: hexBossAcrossFlats - method: dimension dimension: overallHeight - id: hexPocket kind: pocket description: Pointy-top hexagonal socket from y=1 through y=4, vertex radius 4, flats at x=±3.463. parameters: - hexPocketFlat - hexPocketVertex - hexPocketAcross - hexFloorY - hexPocketDepth - envelopeSizeY verify: - method: face face: hexFloor - method: face face: hexPocketLeft - method: face face: hexPocketRight - method: plane plane: hexPocket60 - method: plane plane: hexPocket120 - method: plane plane: hexPocket240 - method: plane plane: hexPocket300 - method: void points: - [0.0, 2.5, 0.0] - method: section section: y2 - method: count section: y2 count: 1 - method: dimension dimension: hexPocketAcrossFlats - id: centerBore kind: hole description: Ø3.1 hole through the 1 mm floor on the part axis, connecting the hex socket to the circular face. parameters: - boreDiameter - boreLength - boreRadius - hexFloorY verify: - method: cylinder cylinder: boreHole - method: void points: - [0.0, 0.5, 0.0] - method: section section: x0 - method: section section: z0 - id: tipFillets kind: pattern count: 36 description: One Ø0.2 tip-fillet cylinder per tooth, axes on tipCircleRadius at k*toothPitchDeg from +x, y=0..3. parameters: - tipFilletDiameter - tipFilletRadius - tipCircleRadius - toothCount - toothPhase - toothPitchDeg - discThickness verify: - method: cylinder cylinder: tipFillet0 - method: cylinder cylinder: tipFillet9 - method: cylinder cylinder: tipFillet18 - method: cylinder cylinder: tipFillet27 - id: toothFlanksListed kind: other optional: true description: Four tooth-flank planes above the dimension-sheet area threshold (2.45 mm2). The other 68 flanks were omitted from the sheet. parameters: - toothCount - discThickness verify: - method: plane plane: toothFlankA - method: plane plane: toothFlankB - method: plane plane: toothFlankC - method: plane plane: toothFlankD interfaces: - name: axisAndCircularSeat description: Part axis and the y=0 circular face remain the reconstruction frame when hub height or hex-floor depth changes. must_not_change: true checks: - discBottom - boreHole - spanX - spanZ - name: hexDrive description: Hex socket and boss across-flats and diagonal walls stay put under the two edit tests. must_not_change: true checks: - hexPocketLeft - hexPocketRight - hexBossLeft - hexBossRight - hexPocketAcrossFlats - hexBossAcrossFlats - hexPocket60 - hexPocket120 - hexPocket240 - hexPocket300 - hexBoss60 - hexBoss120 - hexBoss240 - hexBoss300 - name: toothPattern description: 36-tooth mid-disc section topology and named root/tip cylinders survive the height and floor edits. must_not_change: true checks: - y2 - teeth - rootCylinder - tipFillet0 - tipFillet9 - tipFillet18 - tipFillet27 acceptance: bbox_tolerance: 0.05 volume: expected: 827.65 tolerance: 2.0 provenance: stated note: 'sources/dimension-sheet.md Envelope and mass properties: volume 827.65 mm3 (measured on the reference in its native frame).' surface_area: expected: 963.43 tolerance: 5.0 provenance: stated note: 'sources/dimension-sheet.md Envelope and mass properties: surface area 963.43 mm2; 161 faces (88 planar).' center_of_mass: expected: [0.0, 1.515, 0.0] tolerance: 0.05 provenance: stated note: 'sources/dimension-sheet.md Envelope and mass properties: centre of mass [0.0, 1.515, 0.0]. Geometric centroid at unit density; no material is specified.' solid_count: 1 sections: - id: x0 plane: x at: 0.0 expect: area: 44.36 area_tolerance_rel: 0.02 loops: 2 holes: 0 description: 'Two islands (sheet: centroids (1.48, ±6.52), bbox 4 x 8.69). Cuts hex vertices and the ±z teeth.' - id: y2 plane: y at: 2.0 expect: area: 256.75 area_tolerance_rel: 0.01 loops: 1 holes: 1 description: Toothed outline minus the hex socket. Tooth count is acceptance.gears, not loop count. Image caption 256.74 mm2. - id: z0 plane: z at: 0.0 expect: area: 46.23 area_tolerance_rel: 0.02 loops: 2 holes: 0 description: 'Two islands (sheet: centroids (±6.38, 1.49), bbox 8.69 x 4). Cuts hex flats and the ±x teeth.' faces: - name: hexBossLeft plane: x at: -4.332 normal: '-' area: 5.0 area_tolerance_rel: 0.02 tolerance: 0.02 center: [3.5, 0.0] mode: one - name: hexPocketLeft plane: x at: -3.463 normal: + area: 12.0 area_tolerance_rel: 0.02 tolerance: 0.02 center: [2.5, 0.0] mode: one - name: hexPocketRight plane: x at: 3.463 normal: '-' area: 12.0 area_tolerance_rel: 0.02 tolerance: 0.02 center: [2.5, 0.0] mode: one - name: hexBossRight plane: x at: 4.332 normal: + area: 5.0 area_tolerance_rel: 0.02 tolerance: 0.02 center: [3.5, 0.0] mode: one - name: discBottom plane: y at: 0.0 normal: '-' area: 290.77 area_tolerance_rel: 0.01 tolerance: 0.02 center: [0.0, 0.0] mode: one - name: hexFloor plane: y at: 1.0 normal: + area: 34.02 area_tolerance_rel: 0.01 tolerance: 0.02 center: [0.0, 0.0] mode: one - name: discTop plane: y at: 3.0 normal: + area: 233.37 area_tolerance_rel: 0.01 tolerance: 0.02 center: [0.0, 0.0] mode: one - name: hexBossTop plane: y at: 4.0 normal: + area: 23.38 area_tolerance_rel: 0.01 tolerance: 0.02 center: [0.0, 0.0] mode: one cylinders: - name: boreHole point: [0.0, 0.5, 0.0] direction: [0.0, 1.0, 0.0] kind: hole diameter: 3.1 radius_tolerance: 0.02 axis_tolerance: 0.02 length: 1.0 length_tolerance: 0.02 t_range: [-0.5, 0.5] description: Ø3.1 floor bore; extent y=0..1 from [0,0,0]. - name: rootCylinder point: [0.0, 1.5, 0.0] direction: [0.0, 1.0, 0.0] kind: pin diameter: 19.0 radius_tolerance: 0.02 axis_tolerance: 0.02 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Partial Ø19 dedendum cylinder, y=0..3. - name: tipFillet0 point: [10.142, 1.5, 0.0] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 0 at 0 deg (from +x toward +z). Sheet axis at [10.142, 1.5, 0.0]. - name: tipFillet1 point: [9.988, 1.5, 1.761] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 1 at 10 deg (from +x toward +z). Sheet axis at [9.988, 1.5, 1.761]. - name: tipFillet2 point: [9.53, 1.5, 3.469] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 2 at 20 deg (from +x toward +z). Sheet axis at [9.53, 1.5, 3.469]. - name: tipFillet3 point: [8.783, 1.5, 5.071] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 3 at 30 deg (from +x toward +z). Sheet axis at [8.783, 1.5, 5.071]. - name: tipFillet4 point: [7.769, 1.5, 6.519] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 4 at 40 deg (from +x toward +z). Sheet axis at [7.769, 1.5, 6.519]. - name: tipFillet5 point: [6.519, 1.5, 7.769] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 5 at 50 deg (from +x toward +z). Sheet axis at [6.519, 1.5, 7.769]. - name: tipFillet6 point: [5.071, 1.5, 8.783] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 6 at 60 deg (from +x toward +z). Sheet axis at [5.071, 1.5, 8.783]. - name: tipFillet7 point: [3.468, 1.5, 9.53] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 7 at 70 deg (from +x toward +z). Sheet axis at [3.468, 1.5, 9.53]. - name: tipFillet8 point: [1.761, 1.5, 9.988] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 8 at 80 deg (from +x toward +z). Sheet axis at [1.761, 1.5, 9.988]. - name: tipFillet9 point: [-0.0, 1.5, 10.142] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 9 at 90 deg (from +x toward +z). Sheet axis at [-0.0, 1.5, 10.142]. - name: tipFillet10 point: [-1.761, 1.5, 9.988] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 10 at 100 deg (from +x toward +z). Sheet axis at [-1.761, 1.5, 9.988]. - name: tipFillet11 point: [-3.469, 1.5, 9.53] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 11 at 110 deg (from +x toward +z). Sheet axis at [-3.469, 1.5, 9.53]. - name: tipFillet12 point: [-5.071, 1.5, 8.783] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 12 at 120 deg (from +x toward +z). Sheet axis at [-5.071, 1.5, 8.783]. - name: tipFillet13 point: [-6.519, 1.5, 7.769] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 13 at 130 deg (from +x toward +z). Sheet axis at [-6.519, 1.5, 7.769]. - name: tipFillet14 point: [-7.769, 1.5, 6.519] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 14 at 140 deg (from +x toward +z). Sheet axis at [-7.769, 1.5, 6.519]. - name: tipFillet15 point: [-8.783, 1.5, 5.071] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 15 at 150 deg (from +x toward +z). Sheet axis at [-8.783, 1.5, 5.071]. - name: tipFillet16 point: [-9.53, 1.5, 3.468] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 16 at 160 deg (from +x toward +z). Sheet axis at [-9.53, 1.5, 3.468]. - name: tipFillet17 point: [-9.988, 1.5, 1.761] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 17 at 170 deg (from +x toward +z). Sheet axis at [-9.988, 1.5, 1.761]. - name: tipFillet18 point: [-10.142, 1.5, -0.0] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 18 at 180 deg (from +x toward +z). Sheet axis at [-10.142, 1.5, -0.0]. - name: tipFillet19 point: [-9.988, 1.5, -1.761] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 19 at 190 deg (from +x toward +z). Sheet axis at [-9.988, 1.5, -1.761]. - name: tipFillet20 point: [-9.53, 1.5, -3.469] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 20 at 200 deg (from +x toward +z). Sheet axis at [-9.53, 1.5, -3.469]. - name: tipFillet21 point: [-8.783, 1.5, -5.071] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 21 at 210 deg (from +x toward +z). Sheet axis at [-8.783, 1.5, -5.071]. - name: tipFillet22 point: [-7.769, 1.5, -6.519] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 22 at 220 deg (from +x toward +z). Sheet axis at [-7.769, 1.5, -6.519]. - name: tipFillet23 point: [-6.519, 1.5, -7.769] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 23 at 230 deg (from +x toward +z). Sheet axis at [-6.519, 1.5, -7.769]. - name: tipFillet24 point: [-5.071, 1.5, -8.783] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 24 at 240 deg (from +x toward +z). Sheet axis at [-5.071, 1.5, -8.783]. - name: tipFillet25 point: [-3.468, 1.5, -9.53] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 25 at 250 deg (from +x toward +z). Sheet axis at [-3.468, 1.5, -9.53]. - name: tipFillet26 point: [-1.761, 1.5, -9.988] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 26 at 260 deg (from +x toward +z). Sheet axis at [-1.761, 1.5, -9.988]. - name: tipFillet27 point: [0.0, 1.5, -10.142] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 27 at 270 deg (from +x toward +z). Sheet axis at [0.0, 1.5, -10.142]. - name: tipFillet28 point: [1.761, 1.5, -9.988] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 28 at 280 deg (from +x toward +z). Sheet axis at [1.761, 1.5, -9.988]. - name: tipFillet29 point: [3.469, 1.5, -9.53] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 29 at 290 deg (from +x toward +z). Sheet axis at [3.469, 1.5, -9.53]. - name: tipFillet30 point: [5.071, 1.5, -8.783] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 30 at 300 deg (from +x toward +z). Sheet axis at [5.071, 1.5, -8.783]. - name: tipFillet31 point: [6.519, 1.5, -7.769] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 31 at 310 deg (from +x toward +z). Sheet axis at [6.519, 1.5, -7.769]. - name: tipFillet32 point: [7.769, 1.5, -6.519] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 32 at 320 deg (from +x toward +z). Sheet axis at [7.769, 1.5, -6.519]. - name: tipFillet33 point: [8.783, 1.5, -5.071] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 33 at 330 deg (from +x toward +z). Sheet axis at [8.783, 1.5, -5.071]. - name: tipFillet34 point: [9.53, 1.5, -3.468] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 34 at 340 deg (from +x toward +z). Sheet axis at [9.53, 1.5, -3.468]. - name: tipFillet35 point: [9.988, 1.5, -1.761] direction: [0.0, 1.0, 0.0] kind: pin diameter: 0.2 radius_tolerance: 0.02 axis_tolerance: 0.05 length: 3.0 length_tolerance: 0.02 t_range: [-1.5, 1.5] description: Tooth-tip fillet 35 at 350 deg (from +x toward +z). Sheet axis at [9.988, 1.5, -1.761]. planes: - name: hexPocket60 point: [3.466, 3.0, 1.997] normal: [-0.5006, 0.0, -0.8657] area: 12.0 area_tolerance_rel: 0.02 tolerance: 0.02 angle_tolerance_deg: 0.5 description: Inner hex flat (~60 deg). Outward from solid into the socket. - name: hexPocket120 point: [0.003, 3.0, 4.0] normal: [0.4994, 0.0, -0.8664] area: 12.0 area_tolerance_rel: 0.02 tolerance: 0.02 angle_tolerance_deg: 0.5 description: Inner hex flat (~120 deg). Outward from solid into the socket. - name: hexPocket240 point: [-3.466, 3.0, -1.997] normal: [0.5006, 0.0, 0.8657] area: 12.0 area_tolerance_rel: 0.02 tolerance: 0.02 angle_tolerance_deg: 0.5 description: Inner hex flat (~240 deg). Outward from solid into the socket. - name: hexPocket300 point: [-0.003, 3.0, -4.0] normal: [-0.4994, 0.0, 0.8664] area: 12.0 area_tolerance_rel: 0.02 tolerance: 0.02 angle_tolerance_deg: 0.5 description: Inner hex flat (~300 deg). Outward from solid into the socket. - name: hexBoss60 point: [0.003, 3.0, 5.0] normal: [0.5005, 0.0, 0.8657] area: 5.0 area_tolerance_rel: 0.02 tolerance: 0.02 angle_tolerance_deg: 0.5 description: Outer hex-boss flat (~60 deg). Outward from solid. - name: hexBoss120 point: [-4.329, 3.0, 2.503] normal: [-0.4995, 0.0, 0.8663] area: 5.0 area_tolerance_rel: 0.02 tolerance: 0.02 angle_tolerance_deg: 0.5 description: Outer hex-boss flat (~120 deg). Outward from solid. - name: hexBoss240 point: [-0.003, 3.0, -5.0] normal: [-0.5005, 0.0, -0.8657] area: 5.0 area_tolerance_rel: 0.02 tolerance: 0.02 angle_tolerance_deg: 0.5 description: Outer hex-boss flat (~240 deg). Outward from solid. - name: hexBoss300 point: [4.329, 3.0, -2.503] normal: [0.4995, 0.0, -0.8663] area: 5.0 area_tolerance_rel: 0.02 tolerance: 0.02 angle_tolerance_deg: 0.5 description: Outer hex-boss flat (~300 deg). Outward from solid. - name: toothFlankA point: [10.192, 0.0, -0.086] normal: [0.5061, 0.0, -0.8625] area: 2.45 area_tolerance_rel: 0.05 tolerance: 0.05 angle_tolerance_deg: 1.0 description: Tooth flank above the sheet area threshold, near +x. - name: toothFlankB point: [-10.192, 0.0, 0.086] normal: [-0.5061, 0.0, 0.8625] area: 2.45 area_tolerance_rel: 0.05 tolerance: 0.05 angle_tolerance_deg: 1.0 description: Tooth flank above the sheet area threshold, near -x. - name: toothFlankC point: [0.086, 0.0, 10.192] normal: [0.8625, 0.0, 0.5061] area: 2.45 area_tolerance_rel: 0.05 tolerance: 0.05 angle_tolerance_deg: 1.0 description: Tooth flank above the sheet area threshold, near +z. - name: toothFlankD point: [-10.023, 0.0, 1.855] normal: [-0.3487, 0.0, 0.9372] area: 2.45 area_tolerance_rel: 0.05 tolerance: 0.05 angle_tolerance_deg: 1.0 description: Tooth flank above the sheet area threshold, near -x/+z; angle differs from the first three. dimensions: - name: spanX axis: x expected: 20.483 tolerance: 0.05 description: Bbox extent along x (stated size). - name: spanY axis: y expected: 4.0 tolerance: 0.05 description: Bbox extent along y. between: - discBottom - hexBossTop - name: spanZ axis: z expected: 20.483 tolerance: 0.05 description: Bbox extent along z (stated size). - name: discHeight axis: y expected: 3.0 tolerance: 0.02 description: Disc thickness. between: - discBottom - discTop - name: overallHeight axis: y expected: 4.0 tolerance: 0.02 description: Circular face to hex-boss cap. between: - discBottom - hexBossTop - name: hexPocketAcrossFlats axis: x expected: 6.926 tolerance: 0.02 description: Inner hex across-flats. between: - hexPocketLeft - hexPocketRight - name: hexBossAcrossFlats axis: x expected: 8.664 tolerance: 0.02 description: Outer hex across-flats. between: - hexBossLeft - hexBossRight solids: - name: gear contains_point: [6.0, 1.5, 0.0] volume: expected: 827.65 tolerance: 2.0 provenance: stated note: Single body; same value as acceptance.volume. description: 'The one solid: toothed disc, hex boss, hex socket and floor bore.' hardware: [] clearances: [] passages: [] thickness: [] probes: - name: discMaterial state: solid points: - [6.0, 1.5, 0.0] description: Inside the disc rim, r=6, between hex vertex 4 and root 9.5. - name: hubMaterial state: solid points: - [3.9, 3.5, 0.0] description: Inside the hex-boss wall, between flats 3.463 and 4.332 at y=3.5. - name: boreVoid state: void points: - [0.0, 0.5, 0.0] description: On the bore axis, mid-floor. - name: hexVoid state: void points: - [0.0, 2.5, 0.0] description: On the axis inside the hex socket, above the floor. - name: outsideVoid state: void points: - [12.0, 1.5, 0.0] description: Outside the tip circle on +x. cylinder_counts: - name: boreCount diameter: 3.1 radius_tolerance: 0.02 kind: hole direction: [0.0, 1.0, 0.0] expected: 1 description: Single Ø3.1 floor bore. - name: rootCount diameter: 19.0 radius_tolerance: 0.02 kind: pin direction: [0.0, 1.0, 0.0] expected: 1 description: Single partial Ø19 dedendum cylinder. - name: tipFilletCount diameter: 0.2 radius_tolerance: 0.02 kind: pin direction: [0.0, 1.0, 0.0] expected: 36 description: One tip fillet per tooth. gears: - name: teeth solid: gear point: [0.0, 0.0, 0.0] direction: [0.0, 1.0, 0.0] at: 2.0 module: 0.569 teeth: 36 description: 'Mid-disc tooth count. Module is the inferred counting aid, not a stated involute module. Phase: tip on +x.' meshes: [] deviation: null blockout: volume_min: 969.221 volume_max: 1137.781 export_volume_tolerance_rel: 0.002 references: - path: sources/part-brief.md kind: text role: authoritative sha256: 539d004699f714a06e332307d4492898bea539d8b99fece78c43e6232ce55adc units: mm revision: Unversioned source; revision identified by SHA-256. note: Held-out reconstruction brief; names the native frame and one-solid STEP/STL deliverable. - path: sources/dimension-sheet.md kind: text role: authoritative sha256: 7d3413c8a07dd7a0739e4f0c2262587aed84b8baf2d2bdacf31f37bf758555f8 units: mm revision: Unversioned source; revision identified by SHA-256. note: Envelope, mass properties, face levels, inclined planes, cylinders, sections. Values measured on the reference in its native frame. - path: sources/render-notes.md kind: text role: illustrative sha256: 5f9477cd2b1c1233b9eeae3aaac0558ca44c95df2c5321cfeed8111beb887114 units: mm revision: Unversioned source; revision identified by SHA-256. note: Render list and mesh triangle count; not a dimension source. - path: sources/front.png kind: image role: illustrative sha256: 035beba138156d44c9f5edb73da5a823e0aa5f2a7fecac2aec2932b47ce5b374 units: mm revision: Unversioned source; revision identified by SHA-256. note: Orthographic XZ, mm grid. 36 teeth counted; hole at the origin; teeth on the cardinal axes. - path: sources/top.png kind: image role: illustrative sha256: 8d47253523dcf7475880132e6a4e7632f6acf6f23351989d73de92f974d21cb7 units: mm revision: Unversioned source; revision identified by SHA-256. note: Orthographic XY. Disc y=0..3; hex boss y=3..4 at |x|≲4.3. - path: sources/right.png kind: image role: illustrative sha256: 6197f27313adbba08e45760699a7ce0ec8c87a61ab2f1a8504048b9c9a6d1dfe units: mm revision: Unversioned source; revision identified by SHA-256. note: Orthographic ZY. Same y steps as top.png. - path: sources/iso.png kind: image role: illustrative sha256: f2be75464db1b2631d4ea1135d2dbeb626f582b0c93f052be4ae8906bf53dca6 units: mm revision: Unversioned source; revision identified by SHA-256. note: Circular y=0 face with the central hole. - path: sources/iso2.png kind: image role: illustrative sha256: 00701f6472fc7264c630b2507ca5b6d20cfb1c6d661d753be9f2109ab6c8874e units: mm revision: Unversioned source; revision identified by SHA-256. note: Pointy-top hex boss on +y. - path: sources/iso-below.png kind: image role: illustrative sha256: a47b41a08f125b259bf42f963273dc770acc596b9bb373ba3f98d5195447ce74 units: mm revision: Unversioned source; revision identified by SHA-256. note: Underside of the circular face and hole. - path: sources/section-x0.png kind: image role: illustrative sha256: 787d1eb358fec02f11e3daeb045448041992f560a54951e7bc8c873654497280 units: mm revision: Unversioned source; revision identified by SHA-256. note: Two islands; hex step and 1 mm floor. - path: sources/section-y2.png kind: image role: illustrative sha256: 3c1ea5cb54a63bc61e197893d9f2c839a95644c1ec81bcecfae227485e947c19 units: mm revision: Unversioned source; revision identified by SHA-256. note: 36-tooth outline and inner hex; caption 256.74 mm2 vs sheet 256.75. - path: sources/section-z0.png kind: image role: illustrative sha256: 2f796c1eeffdb9a891e789f839f84c3e894943642a3495a7e110e2f5a0d60761 units: mm revision: Unversioned source; revision identified by SHA-256. note: Two islands; floor y=1, boss y=4, caption 46.23 mm2. open_questions: - What tooth form is intended (involute spur, trapezoidal/sprocket, or another construction)? section-y2.png shows straight-looking flanks and rounded tips; no pressure angle, pitch diameter, addendum/dedendum factors or cutter is stated. gearModule 0.569 mm is only a tooth-count threshold. - What are the 68 tooth-flank planes omitted from the dimension sheet as below the area threshold (4 listed at 2.45 mm2)? The 36 tip fillets and the y=2 section constrain the envelope, but individual omitted flanks are not named. - The stated bbox size [20.483, 4.0, 20.483] is 0.001 mm short of max-min = [20.484, 4.0, 20.484] from the stated min/max ±10.242. Envelope uses the stated min/max; tipOuterRadius = 10.242 matches those bounds. Which rounding is authoritative? - Is the Ø19 partial cylinder the true root/dedendum face, or a construction/envelope cylinder interrupted by the teeth? The sheet lists it as pin Ø19, length 3, full 360 = no. - Does the Ø3.1 hole remain a 1 mm cylinder in the floor only, or should a modeller treat the hex socket plus bore as one through passage of mixed section? The sheet lists only the cylindrical 1 mm portion. - What material, density and manufacturing process are intended? Unspecified; material, density_kg_m3 and process remain null. Volume and centre of mass are geometric (unit density), not a mass claim. - How should evaluator-only surface deviation against the held-out reference CAD be reported? No reference mesh is in this bundle; acceptance.deviation is null.