{
  "task": "Model a gearbox housing with bearing bosses, bolt flange and mounting lugs",
  "domain": "CAD",
  "application": "Siemens NX",
  "description": "Create a 3D solid model and an associated drawing of a cast gearbox housing in millimetres. Work from the supplied dimensioned diagrams diagram_01.png, diagram_01_detail01.png, diagram_01_detail02.png, diagram_01_detail03.png and diagram_01_detail04.png.\n\nThe housing is an open-top rectangular box. Its main features are:\n- **Top bolt flange.** A continuous flange runs around the top, with rounded corners (R10) and a vertical bolt hole at each of the four corners. Cylindrical bosses run down the inside corners of the cavity under these holes.\n- **Bearing bosses.** Each long side wall carries two circular bearing bosses of R40, with their centres 64 apart. Each boss has a central bore of R14 (Ø28) surrounded by four equally spaced bolt holes. The boss pair sits on a U-shaped raised pad on the wall.\n- **Bore height.** The bore axes are 57 above the base and 45 below the top face.\n- **Mounting lugs.** A triangular lug projects from each end of the base. Each lug has a rounded tip of R18 and a vertical Ø16 through hole with a Ø28 counterbore (2X each).\n- **Base relief.** The underside has a shallow relief between the lugs.\n\nKey dimensions:\n- Overall length: 263.96.\n- Body length: 166.\n- Lug projection: 48.98 each side.\n- Bore centres from the lug tips: 99.98 each side.\n- Overall width: 96.\n- Overall height: 102.\n- Overall envelope: about 264 × 96 × 102 mm.\n\nThe finished part shall be a single closed solid body, built only from planar and cylindrical faces. Its volume shall be approximately 618,019 mm³.\n\nSave the part as Dual-Port_Valve_Housing.prt. Create the drawing in Dual-Port_Valve_Housing_dwg1.prt, referencing the part.\n\nThe drawing shall be a single sheet in third-angle projection, containing:\n- Top, front, side and isometric views.\n- Dimensions including the overall length, the 166 body length, the 102 height and the 96 width, and the R40, R18, Ø16 and Ø28 callouts.\n- A title block with a title, a drawing number and sheet 1 OF 1.\n- A note that dimensions are in millimetres.",
  "input_files": [
    "task_files/diagrams/diagram_01.pdf",
    "task_files/diagrams/diagram_01.png",
    "task_files/diagrams/diagram_01_detail01.png",
    "task_files/diagrams/diagram_01_detail02.png",
    "task_files/diagrams/diagram_01_detail03.png",
    "task_files/diagrams/diagram_01_detail04.png"
  ],
  "deliverables": [
    {
      "path": "output_files/project_files/Dual-Port_Valve_Housing.prt",
      "type": "native_project_or_dependency",
      "format": ".prt",
      "description": "The deliverable is a millimetre NX part file containing the single-solid gearbox housing, plus a separate NX drawing file holding a dimensioned sheet with views of that part."
    },
    {
      "path": "output_files/project_files/Dual-Port_Valve_Housing_dwg1.prt",
      "type": "native_project_or_dependency",
      "format": ".prt",
      "description": "The deliverable is a millimetre NX part file containing the single-solid gearbox housing, plus a separate NX drawing file holding a dimensioned sheet with views of that part."
    },
    {
      "path": "output_files/project_files/Dual-Port_Valve_Housing.stp",
      "type": "native_project_or_dependency",
      "format": ".stp",
      "description": "STEP export of the model in the same units."
    }
  ]
}