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laser and plasma stuff
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@swarfer
swarfer committed Oct 15, 2022
1 parent f177c6f commit 6523a69
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89 changes: 62 additions & 27 deletions OpenbuildsFusion360PostGrbl.cps
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Original file line number Diff line number Diff line change
Expand Up @@ -42,8 +42,9 @@ Changelog
24 Nov 2021 - V1.0.28 : Improved coolant selection, tweaked property groups, tweaked G53 generation, links for help in comments.
21 Feb 2022 - V1.0.29 : Fix sideeffects of drill operation having rapids even when in noRapid mode by always resetting haveRapid in onSection
10 May 2022 - V1.0.30 : Change naming convention for first file in multifile output (Sharmstr)
xx Sep 2022 - V1.0.31 : better laser, with pierce option if cutting
*/
obversion = 'V1.0.30';
obversion = 'V1.0.31';
description = "OpenBuilds CNC : GRBL/BlackBox"; // cannot have brackets in comments
longDescription = description + " : Post" + obversion; // adds description to post library dialog box
vendor = "OpenBuilds";
Expand Down Expand Up @@ -81,10 +82,11 @@ properties =
machineHomeX : -10, // always in millimeters
machineHomeY : -10,
gotoMCSatend : false, // true will do G53 G0 x{machinehomeX} y{machinehomeY}, false will do G0 x{machinehomeX} y{machinehomeY} at end of program
PowerVaporise : 100, // cutting power in percent
PowerThrough : 50,
PowerEtch : 2,
PowerVaporise : 5, // cutting power in percent, to vaporize plastic coatings
PowerThrough : 100, // for through cutting
PowerEtch : 10, // for etching the surface
UseZ : false, // if true then Z will be moved to 0 at beginning and back to 'retract height' at end
UsePierce : false, // if true && islaser && cutting use M3 and honor pierce delays, else use M4
//plasma stuff
plasma_usetouchoff : false, // use probe for touchoff if true
plasma_touchoffOffset : 5.0, // offset from trigger point to real Z0, used in G10 line
Expand Down Expand Up @@ -201,10 +203,11 @@ propertyDefinitions = {
type:"boolean",
},
PowerVaporise: {title:"LASER: Power for Vaporizing", description:"Scary power VAPORIZE power setting, in percent.", group:"laserPlasma", type:"integer"},
PowerVaporise: {title:"LASER: Power for Vaporizing", description:"Just enough Power to VAPORIZE plastic coating, in percent.", group:"laserPlasma", type:"integer"},
PowerThrough: {title:"LASER: Power for Through Cutting", description:"Normal Through cutting power, in percent.", group:"laserPlasma", type:"integer"},
PowerEtch: {title:"LASER: Power for Etching", description:"Just enough power to Etch the surface, in percent.", group:"laserPlasma", type:"integer"},
UseZ: {title:"LASER: Use Z motions at start and end.", description:"Use True if you have a laser on a router with Z motion, or a PLASMA cutter.", group:"laserPlasma", type:"boolean"},
UsePierce: {title:"LASER: Use pierce delays with M3 motion when cutting.", description:"True will use M3 commands and pierce delays, else use M4 with no delays.", group:"laserPlasma", type:"boolean"},
plasma_usetouchoff: {title:"PLASMA: Use Z touchoff probe routine", description:"Set to true if have a touchoff probe for Plasma.", group:"laserPlasma", type:"boolean"},
plasma_touchoffOffset:{title:"PLASMA: Plasma touch probe offset", description:"Offset in Z at which the probe triggers, always Millimeters, always positive.", group:"laserPlasma", type:"spatial"},
Expand Down Expand Up @@ -284,6 +287,7 @@ var retractHeight = 1; // will be set by onParameter and used in onLinear to de
var clearanceHeight = 10; // will be set by onParameter
var topHeight = 1; // set by onParameter
var leadinRate = 314; // set by onParameter: the lead-in feedrate,plasma
var cuttingMode = 'none'; // set by onParameter for laser/plasma
var linmove = 1; // linear move mode
var toolRadius; // for arc linearization
var plasma_pierceHeight = 1; // set by onParameter from Linking|PierceClearance
Expand Down Expand Up @@ -488,7 +492,10 @@ function writeHeader(secID)
var unitstr = (unit == MM) ? 'mm' : 'inch';
writeComment("Units = " + unitstr );
if (isJet())
{
writeComment("Laser UseZ = " + properties.UseZ);
writeComment("Laser UsePierce = " + properties.UsePierce);
}
writeln("");
if (hasGlobalParameter("document-path"))
Expand Down Expand Up @@ -804,8 +811,15 @@ function onSection()
writeComment("Plasma pierce height " + plasma_pierceHeight);
writeComment("Plasma topHeight " + topHeight);
}

toolRadius = tool.diameter / 2.0;
if (isLaser || isPlasma)
{
// fake the radius else the arcs are too small before being linearized
toolRadius = tool.diameter * 4;
}
else
{
toolRadius = tool.diameter / 2.0;
}

//TODO : plasma check that top height mode is from stock top and the value is positive
//(onParameter =operation:topHeight mode= from stock top)
Expand Down Expand Up @@ -888,15 +902,19 @@ function onSection()
return;
}
// figure cutmode, M3 or M4
cutmode = 4; // always M4 mode
if ((cuttingMode == 'etch') || (cuttingMode == 'vaporize'))
cutmode = 4; // always M4 mode unless cutting
else
cutmode = 3;
if (pwas != power)
{
sOutput.reset();
//if (isFirstSection())
if (cutmode == 3)
writeBlock(mOutput.format(cutmode), sOutput.format(0)); // else you get a flash before the first g0 move
writeBlock(mOutput.format(cutmode), sOutput.format(0), '; flash preventer'); // else you get a flash before the first g0 move
else
writeBlock(mOutput.format(cutmode), sOutput.format(power));
if (cuttingMode != 'cut')
writeBlock(mOutput.format(cutmode), sOutput.format(power), '; section power');
}
break;
case TOOL_PLASMA_CUTTER:
Expand Down Expand Up @@ -998,7 +1016,7 @@ function onSection()

function onDwell(seconds)
{
if (seconds > 0.0)
if (seconds > 0.0)
writeBlock(gFormat.format(4), "P" + secFormat.format(seconds));
}

Expand Down Expand Up @@ -1104,21 +1122,19 @@ function onLinear(_x, _y, _z, feed)
// laser, plasma
if (x || y)
{
var z = properties.UseZ ? zOutput.format(_z) : "";
var s = sOutput.format(power);
if (haveRapid)
{
// this is the old process when we have rapids inserted by onRapid
var z = properties.UseZ ? zOutput.format(_z) : "";
var s = sOutput.format(power);
if (isPlasma && !powerOn) // plasma does some odd routing that should be rapid
if (!powerOn) // laser/plasma does some odd routing that should be rapid
writeBlock(gMotionModal.format(0), x, y, z, f, s);
else
writeBlock(gMotionModal.format(1), x, y, z, f, s);
}
else
{
// this is the new process when we dont have onRapid but GRBL requires G0 moves for noncutting laser moves
var z = properties.UseZ ? zOutput.format(0) : "";
var s = sOutput.format(power);
if (powerOn)
writeBlock(gMotionModal.format(1), x, y, z, f, s);
else
Expand Down Expand Up @@ -1152,8 +1168,9 @@ function onCircular(clockwise, cx, cy, cz, x, y, z, feed)
var rad = Math.sqrt(Math.pow(start.x - cx,2) + Math.pow(start.y - cy, 2));
if (properties.linearizeSmallArcs && (rad < toolRadius))
{
//writeComment("linearizing arc radius " + round(rad,4) + " toolRadius " + round(toolRadius,3));
if (debug) writeComment("linearizing arc radius " + round(rad,4) + " toolRadius " + round(toolRadius,3));
linearize(tolerance);
if (debug) writeComment("done");
return;
}
if (isFullCircle())
Expand All @@ -1164,8 +1181,12 @@ function onCircular(clockwise, cx, cy, cz, x, y, z, feed)
}
else
{
if (isPlasma && !powerOn)
if ((isLaser || isPlasma) && !powerOn)
{
if (debug) writeComment("arc linearize rapid");
linearize(tolerance * 4); // this is a rapid move so tolerance can be increased for faster motion and fewer lines of code
if (debug) writeComment("arc linearize rapid done");
}
else
switch (getCircularPlane())
{
Expand Down Expand Up @@ -1302,35 +1323,35 @@ function onCommand(command)
switch (command)
{
case COMMAND_STOP: // - Program stop (M00)
writeComment("Program stop (M00)");
writeComment("Program stop M00");
writeBlock(mFormat.format(0));
break;
case COMMAND_OPTIONAL_STOP: // - Optional program stop (M01)
writeComment("Optional program stop (M01)");
writeComment("Optional program stop M01");
writeBlock(mFormat.format(1));
break;
case COMMAND_END: // - Program end (M02)
writeComment("Program end (M02)");
writeComment("Program end M02");
writeBlock(mFormat.format(2));
break;
case COMMAND_POWER_OFF:
//writeComment("power off");
if (debug) writeComment("power off");
if (!haveRapid)
writeln("");
powerOn = false;
if (isPlasma)
if (isPlasma || (isLaser && (cuttingMode == 'cut')) )
writeBlock(mFormat.format(5));
break;
case COMMAND_POWER_ON:
//writeComment("power ON");
if (debug) writeComment("power ON");
if (!haveRapid)
writeln("");
powerOn = true;
if (isPlasma)
if (isPlasma || isLaser)
{
if (properties.UseZ)
{
if (properties.plasma_usetouchoff)
if (properties.plasma_usetouchoff && isPlasma)
{
writeln("");
writeBlock( "G38.2" , zOutput.format(toPreciseUnit(-plasma_probedistance,MM)), feedOutput.format(toPreciseUnit(plasma_proberate,MM)));
Expand All @@ -1344,16 +1365,20 @@ function onCommand(command)
else
writeBlock( gMotionModal.format(0), zOutput.format(plasma_pierceHeight));
}
writeBlock(mFormat.format(3), sOutput.format(power));
if (isPlasma || (cuttingMode == 'cut'))
writeBlock(mFormat.format(3), sOutput.format(power));
}
break;
default:
if (debug) writeComment("onCommand not handled " + command);
}
// for other commands see https://cam.autodesk.com/posts/reference/classPostProcessor.html#af3a71236d7fe350fd33bdc14b0c7a4c6
if (debug) writeComment("onCommand end");
}

function onParameter(name, value)
{
//onParameter('operation:keepToolDown', 0)
//if (debug) writeComment("onParameter =" + name + "= " + value); // (onParameter =operation:retractHeight value= :5)
name = name.replace(" ","_"); // dratted indexOF cannot have spaces in it!
if ( (name.indexOf("retractHeight_value") >= 0 ) ) // == "operation:retractHeight value")
Expand All @@ -1378,6 +1403,15 @@ function onParameter(name, value)
topHeight = value;
if (debug && isPlasma) writeComment("topHeight set " + topHeight);
}
if (name.indexOf('operation:cuttingMode') >= 0)
{
cuttingMode = value;
if (debug) writeComment("cuttingMode set " + cuttingMode);
if (cuttingMode.indexOf('cut') >= 0) // simplify later logic, auto/low/medium/high are all 'cut'
cuttingMode = 'cut';
if (cuttingMode.indexOf('auto') >= 0)
cuttingMode = 'cut';
}
// (onParameter =operation:pierceClearance= 1.5) for plasma
if (name == 'operation:pierceClearance')
plasma_pierceHeight = value;
Expand All @@ -1390,6 +1424,7 @@ function onParameter(name, value)
writeBlock( gMotionModal.format(1) , zOutput.format(topHeight) , feedOutput.format(leadinRate) );
gMotionModal.reset();
}

}
}

Expand Down
5 changes: 5 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,11 @@
Creates .nc files optimized for GRBL based Openbuilds-style machines.
Supports router and laser operations.

V1.0.31
1. improved laser and plasma paths, esp when 'stay down' is selected
1. laser pierce delay option when through cutting is selected
1. Select 'LASER: use Z motions at start and end' to have full Z movement with laser and plasma cuts

V1.0.25 supports plasma torch touchoff probing.
* Read the [instructions](https://github.com/OpenBuilds/OpenBuilds-Fusion360-Postprocessor/blob/master/README-plasma.md)

Expand Down

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