{
  "saved_at_utc": "2026-06-23T08:34:24.290498+00:00",
  "stage": "stage_2_view_selection",
  "provider": "openrouter",
  "model": "qwen/qwen3-vl-30b-a3b-instruct",
  "llm_data": {
    "assembly_info": {
      "title": "3-Axis Automated Grinding Machine Gantry Mechanism",
      "description": "A gantry-style automated grinding system designed to reduce labor dependency and improve precision and stability in surface finishing operations, featuring X-Y-Z axis motion for controlled tool positioning.",
      "material": "Aluminum alloy (extruded profiles) and steel (structural supports, shafts, bearings)"
    },
    "selected_views": [
      {
        "type": "Front",
        "reason": "Shows the full height, vertical alignment of the Z-axis column, and the horizontal X-axis gantry with its support rails and motor mount; essential for overall height and mounting interface definition."
      },
      {
        "type": "Top",
        "reason": "Reveals the full planar footprint, X-axis travel range, and spatial layout of the Y-axis carriage and Z-axis tool head; critical for floor space planning and assembly sequencing."
      },
      {
        "type": "Left",
        "reason": "Shows the depth profile, Y-axis rail arrangement, and side-mounted motor/encoder; reveals the side clearance and mounting flange geometry not visible in Front or Top."
      },
      {
        "type": "Isometric",
        "reason": "Provides 3D spatial context for assembly, showing how the gantry, columns, and tool head interconnect; aids in fabrication, inspection, and installation planning."
      }
    ],
    "section_views": [
      {
        "symbol": "A",
        "normal": [
          0,
          1,
          0
        ],
        "origin": [
          624.07,
          694.04,
          1161.64
        ],
        "reason": "A vertical XZ-plane section through the center of the gantry reveals internal bore diameters of the linear guide rails, shaft support structure, and wall thickness of the column—critical for machining and fit verification."
      }
    ],
    "detail_views": [
      {
        "reference": "C",
        "base_view": "Front",
        "anchor": [
          624.07,
          694.04,
          1161.64
        ],
        "radius": 15,
        "reason": "Magnifies the fillet radius at the base of the Z-axis column where it interfaces with the X-axis carriage; ensures stress concentration is controlled and weld/fit tolerances are met."
      }
    ],
    "dimensions": {
      "Front": [
        {
          "type": "overall_height",
          "dim_type": "DistanceY",
          "match_strategy": "extreme_vertices_y",
          "value_approx": 1638.65,
          "placement": "right",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "overall_width",
          "dim_type": "DistanceX",
          "match_strategy": "extreme_vertices_x",
          "value_approx": 1337.0,
          "placement": "right",
          "offset_index": 2,
          "tolerance": null
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            624.07,
            694.04,
            1161.64
          ],
          "value_approx": 50,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        },
        {
          "type": "wall_thickness",
          "dim_type": "Distance",
          "match_strategy": "nearest_parallel_edges",
          "value_approx": 12,
          "placement": "below",
          "offset_index": 1,
          "tolerance": "+0.2/-0.1"
        }
      ],
      "Top": [
        {
          "type": "overall_width",
          "dim_type": "DistanceX",
          "match_strategy": "extreme_vertices_x",
          "value_approx": 1337.0,
          "placement": "below",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "overall_height",
          "dim_type": "DistanceY",
          "match_strategy": "extreme_vertices_y",
          "value_approx": 1666.0,
          "placement": "below",
          "offset_index": 2,
          "tolerance": null
        },
        {
          "type": "center_distance",
          "dim_type": "Distance",
          "match_strategy": "between_circles",
          "circle_a": {
            "location_3d": [
              624.07,
              694.04,
              1161.64
            ],
            "radius_approx": 25
          },
          "circle_b": {
            "location_3d": [
              624.07,
              694.04,
              1161.64
            ],
            "radius_approx": 25
          },
          "value_approx": 1000,
          "placement": "right",
          "offset_index": 1,
          "tolerance": null
        }
      ],
      "Section A-A": [
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            624.07,
            694.04,
            1161.64
          ],
          "value_approx": 40,
          "tolerance": "H7",
          "placement": "left",
          "offset_index": 1
        },
        {
          "type": "wall_thickness",
          "dim_type": "Distance",
          "match_strategy": "nearest_parallel_edges",
          "value_approx": 10,
          "placement": "below",
          "offset_index": 1,
          "tolerance": "+0.2/-0.1"
        }
      ],
      "Detail C": [
        {
          "type": "radius",
          "dim_type": "Radius",
          "match_strategy": "nearest_arc",
          "location_3d": [
            624.07,
            694.04,
            1161.64
          ],
          "value_approx": 15,
          "tolerance": "0/+0.5",
          "placement": "leader",
          "offset_index": 1
        }
      ]
    }
  }
}