Machine

class hotwing_core.machine.Machine(width, kerf=0.075, profile_points=200, cutting_strategy_name='default', gcode_formatter_name='default', units='inches', feedrate=None)[source]

The Machine class is a representation of a foam cutting machine and goes through the series of cuts required to create a complete cutting path.

The machine takes a Profile object and generates the code to cut that profile.

Gcode generation gets delegated to the cutting_strategy.

Parameters:
  • width (Float) – length of the machine’s hotwire cutter
  • kerf (Float) – Allowance for the hotwire’s cutter. This includes the radius of the wire plus any additional allowance for melted foam from direct or radiant heat.
  • profile_points (Int) – Number of points used when interpolating profiles. This is the number for each (top and bottom) surface of a Profile.
  • cutting_strategy_name –
  • gcode_formatter_name –
  • units –
  • feedrate –
Variables:
  • width – width
  • kerf – kerf
  • profile_points – profile_points
  • cutting_strategy_name – cutting_strategy_name
  • gcode_formatter_name – gcode_formatter_name
  • units – units “inches” or “millimeters”
  • feedrate – feedrate on the side of the largest rib
calculate_move(c1, c2)[source]

Create the XYUV positions for the machine in order to intersect two Coordinates.

Parameters:
Returns:

{“x”:1.1,”y”:1.1,”u”:1.1,”v”:1.1}
Return type:

Dict
generate_gcode(safe_height=5, foam_height=2, normalize=True)[source]

Generate the gcode to cut the panel. You must have a panel loaded into the machine, otherwise it cannot cut.

Parameters:
  • safe_height (Float) – The height where the machine can move freely without hitting anything. Make sure this value is greater than the height of your foam block.
  • normalize (Boolean) – When generating the machine path, the x and y values may be < 0. Setting this to True translates the values so that all x and y values are >= 0.
Returns:

Gcode commands separated by newlines.
Return type:

String
load_panel(panel, left_offset=None)[source]

Load a Panel object into the machine.

Parameters:
  • panel (Panel) – panel to use
  • left_offset (Float) – How far from the left hotwire post to place the panel. If the panel is 24 inches and the machine is 30 inches, a value of 3 ([30-24]/2) will place the panel centered between the CNC’s cutting posts.
Returns:

None