CNC interiors - work procedure

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Projects history[edit]

Issues[edit]

  • communication
  • for sales a 3D picture is required
  • for yard a 2D drawing is required
  • after establishing detailsheet and 2D layout drawing start engineering 2D/3D
  • start and build order - add one drawing which indicates the starting point and buildorder + steel dimensions to check
    • check deformation of hull with laser inside at a marked WL level at frames/shell

Standard delivery[edit]

large format[edit]

  • overview drawings (large format):
    • layout (indicating assembly codes)
    • centerline looking PS and SB
  • general detailsheet
  • sole drawing
  • ceiling drawing
  • lining drawing
  • nested panels

booklet A3[edit]

for each assembly:

  • part list, indicating stock (ShipConstructor)
  • 3D views with part numbers (ShipConstructor)
  • planar views
  • planar sections
  • indicate:
    • hardware
    • profiles

booklet A4[edit]

  • pictures per space
  • material estimation
    • plate
    • solid
  • profile list
  • hardware list
  • hardware catalogue

Materials and Naming[edit]

  • important for weight calculation
  • for each type of plywood we have the following sheeting options:
    • panel simple, no sheeting
    • panel with sheeting per thickness
    • NOTE: if sheeting is applied then it is always applied on BOTH sides (otherwise panel is unstable)
  • thickness is always panel thickness without sheeting
  • use 3 character abbreviation for wood type:
    • BIR - birch
    • POP - poplar
    • OCO - ocoume
    • WIS - wisaplex
  • naming:
    • thickness in mm (2 characters)
    • wood type (3 characters)
    • sheeting (optional):
      • 2x white
      • 1x (colour code)
      • 2x (colour code)
  • naming example:
    • 15 BIR - 15mm birch panel, no sheeting
    • 04 BIR 1x661 - 4mm birch panel, sheeting one side colour 661, other side sheeting white
    • 09 OCO 2x313 - 9mm ocoume panel, sheeting both sides colour 313

U P D A T E with example weight calculation

Nest[edit]

  • required info:
    • panel name - on seperate layer (miller request)
    • material
    • panel size
    • part codes
    • help info - required by us but not by client
      • reference lines
      • grain direction
      • colour
  • layer use:
    • contour panel
    • contour outside
    • contour inside
    • contour recess (depth in layer name? example Z=8.5, measured from milling table)
  • color use? CNC uses layers or colors? For path CNC we should use contours, not offsets, recess contours also to be a closed loop and always inside cut?
  • vertical panel orientation, saves space in drawing
  • single colour: indicate which side facing upward
  • currently we create an offset for miller, this offset to be on layer MARO (HU for cutter) + diameter of tool example 'MARO 20'
  • remove vertices

Milling[edit]

  • use 1 cutter of Ø16 in order to be able to cut slots for 17mm thick material OR use 2 cutters: 1 of Ø18 and 1 of Ø10?

Presentation[edit]

  • start with defining drawing list (and units for SC):
    • set up drawing
    • general detail plan
    • sole
    • lining
    • ceiling
    • furniture drawings (as less as possible
    • assembly drawings
    • expansion drawings
    • profile list
    • hardware list
    • material estimation
    • nests
      • give key for contour colors:
        • outside contour
        • inside contour
        • recess ... deep
    • weight + COG
    • waste percentage
  • all expansions and nests in 1 file
  • presentation to yard? assembly drawings? title blocks? 'Centreboard yard prefers a plotted expansion drawing A1 or A2 format (7-7-2011)
  • send CTB file for correct printing of our drawings
  • key for nest
  • key for abbreviations:
    • material
    • colour codes example: 661 is Abet 661 Micro
  • weight data
  • center of gravity
  • reports
    • which part is in which panel (xls format)
    • material estimation
    • hardware list
    • profile list
    • waste percentage

Additional jobs[edit]

  • edging
  • edge bevel
  • hinge cups
  • push button latch hole
  • part lables
  • hardware lists
  • interior weight
  • interior center of gravity
  • equipment lists

ShipConstructor work method improvements[edit]

  • use better grain direction icon (symmetry)
  • create a unit for each space - then it is easy to nest per space when desired
  • split cabins in several hull/crv plate groups (per colour? makes it easier to apply colour codes and grain direction icons) - this reduces file size which works faster and more people can work on the project to speed up things
  • create crv_plt for sole/wall/ceiling/furniture? Then peopel can work in parallel on 1 cabin to speed up things
  • xref nest drawings in approval drawing
  • make solid wooden profiles in SC?
  • create custom report

Rhinoceros[edit]

  • layer name = panel type?

Modeling and drafting[edit]

  • modifications are done ALWAYS in Rhino model, ShipConstructor Hull AND ShipConstructor Nest, 3D models MUST be accurate in every application

Issues[edit]

  • SC hull - contours of planar parts can change after expansion, especially radi - workaround: use planar groups for ALL parts containing radi
  • radi - can be solved with remove vertices??? Otherwise reduce number of radi used in a project to make it easier to replace wrong radi with the correct radi (for example: use only radi with interval of 10)

Checklist[edit]

  • all parts with colour:
    • indicate grain direction
    • indicate colour
  • nest:
    • check if all parts are nested (count parts (per material) in Rhino and compare with SC)
    • check grain direction
    • check part contours for irregularities created in hull (for example: radi)
    • single colour:
      • check if part is not mirrored in nest (colour on correct side)
    • check for double lines (use OVERKILL command)
    • check if all contours are closed

Bound Approval[edit]

  • check and modify where necessary part contours (for example: radi) mark these in the approval?!

Remarks list[edit]

  • goal: to communicate remarks with client and to catogorize them in order to see where improvements need to be made
  • online document (Google Documents) where client can add remarks, we categorize them
  • table
    • vertical - part list
    • horizontal - remarks + categories
  • categories:
    • design
    • 3D modeling
    • expansion
    • nest
    • milling preparation
    • presentation (info for carpenter)