{
  "saved_at_utc": "2026-05-19T14:35:27.267801+00:00",
  "stage": "stage_2_view_selection",
  "provider": "anthropic",
  "model": "claude-haiku-4-5-20251001",
  "llm_data": {
    "assembly_info": {
      "title": "Differential Gear Box Assembly",
      "description": "A differential gear box assembly featuring a central spherical housing with two perpendicular drive shafts and multiple internal gearing mechanisms. This is a critical component in automotive drivetrains that allows wheels to rotate at different speeds while maintaining torque distribution.",
      "material": "Cast iron or ductile iron (housing), steel (shafts and gears)"
    },
    "selected_views": [
      {
        "type": "Front",
        "reason": "Primary view showing the overall profile, central housing geometry, left drive shaft with splines, and vertical input shaft. Communicates the main assembly envelope and key external features."
      },
      {
        "type": "Top",
        "reason": "Shows the horizontal extent and symmetry of the assembly, reveals the central bore/input shaft location, and displays the right drive shaft orientation. Essential for understanding the plan view and overall width."
      },
      {
        "type": "Right",
        "reason": "Displays the circular flange face with bolt hole pattern (6 holes visible), central bore diameter, and internal ring gear geometry. Critical for manufacturing the mounting interface and understanding the end-face configuration."
      },
      {
        "type": "Isometric",
        "reason": "Provides 3D spatial context showing the relationship between the three perpendicular shafts, the spherical housing shape, and overall assembly orientation. Helps manufacturers visualize the complete 3D geometry."
      }
    ],
    "section_views": [
      {
        "symbol": "A",
        "normal": [
          1,
          0,
          0
        ],
        "origin": [
          30.0,
          0.0,
          0.0
        ],
        "reason": "Vertical section through the YZ plane at the center reveals internal gearing, bore diameters, internal ring gear teeth, and wall thicknesses of the housing. Essential for understanding the internal differential mechanism and internal bore sizes."
      }
    ],
    "detail_views": [
      {
        "reference": "B",
        "base_view": "Right",
        "anchor": [
          0.0,
          0.0,
          0.0
        ],
        "radius": 35,
        "reason": "Magnifies the bolt hole pattern on the flange face, showing the 6 mounting holes, their diameter, and pitch circle diameter. Critical for assembly and mounting interface specifications."
      }
    ],
    "dimensions": {
      "Front": [
        {
          "type": "overall_width",
          "dim_type": "DistanceX",
          "match_strategy": "extreme_vertices_x",
          "value_approx": 251.3,
          "placement": "below",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "overall_height",
          "dim_type": "DistanceY",
          "match_strategy": "extreme_vertices_y",
          "value_approx": 128.1,
          "placement": "right",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            30.0,
            0.0,
            0.0
          ],
          "value_approx": 85,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            -80.0,
            0.0,
            0.0
          ],
          "value_approx": 32,
          "tolerance": "H8",
          "placement": "leader",
          "offset_index": 2
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            80.0,
            0.0,
            0.0
          ],
          "value_approx": 32,
          "tolerance": "H8",
          "placement": "leader",
          "offset_index": 3
        }
      ],
      "Top": [
        {
          "type": "overall_width",
          "dim_type": "DistanceX",
          "match_strategy": "extreme_vertices_x",
          "value_approx": 251.3,
          "placement": "above",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "overall_height",
          "dim_type": "DistanceY",
          "match_strategy": "extreme_vertices_y",
          "value_approx": 272.6,
          "placement": "right",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            30.0,
            0.0,
            0.0
          ],
          "value_approx": 85,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        }
      ],
      "Right": [
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            30.0,
            0.0,
            0.0
          ],
          "value_approx": 140,
          "tolerance": null,
          "placement": "leader",
          "offset_index": 1
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            30.0,
            0.0,
            0.0
          ],
          "value_approx": 65,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 2
        },
        {
          "type": "bolt_pattern",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            30.0,
            0.0,
            0.0
          ],
          "value_approx": 110,
          "tolerance": null,
          "placement": "leader",
          "offset_index": 3
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            30.0,
            45.0,
            0.0
          ],
          "value_approx": 8.5,
          "tolerance": "H9",
          "placement": "leader",
          "offset_index": 4
        }
      ],
      "Section A-A": [
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            30.0,
            0.0,
            0.0
          ],
          "value_approx": 85,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            30.0,
            0.0,
            50.0
          ],
          "value_approx": 45,
          "tolerance": "H8",
          "placement": "leader",
          "offset_index": 2
        },
        {
          "type": "wall_thickness",
          "dim_type": "Distance",
          "match_strategy": "nearest_parallel_edges",
          "location_3d": [
            30.0,
            0.0,
            0.0
          ],
          "value_approx": 12,
          "tolerance": "+-0.5",
          "placement": "right",
          "offset_index": 1
        },
        {
          "type": "linear_distance",
          "dim_type": "Distance",
          "match_strategy": "nearest_edge_pair",
          "location_3d": [
            30.0,
            0.0,
            0.0
          ],
          "value_approx": 95,
          "tolerance": null,
          "placement": "left",
          "offset_index": 1
        }
      ],
      "Detail B": [
        {
          "type": "bolt_pattern",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            30.0,
            0.0,
            0.0
          ],
          "value_approx": 110,
          "tolerance": null,
          "placement": "leader",
          "offset_index": 1
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            30.0,
            45.0,
            0.0
          ],
          "value_approx": 8.5,
          "tolerance": "H9",
          "placement": "leader",
          "offset_index": 1
        },
        {
          "type": "center_distance",
          "dim_type": "Distance",
          "match_strategy": "between_circles",
          "circle_a": {
            "location_3d": [
              30.0,
              45.0,
              0.0
            ],
            "radius_approx": 4.25
          },
          "circle_b": {
            "location_3d": [
              30.0,
              -45.0,
              0.0
            ],
            "radius_approx": 4.25
          },
          "value_approx": 90,
          "tolerance": null,
          "placement": "right",
          "offset_index": 1
        }
      ]
    }
  }
}