spindle mount for mini cnc r1

gcode-suitcasecnc-spindle-mount.js

var gcode = [];
var feed = 2000;
var zfeed = 100;
var materialHeight = 1/4*25.4 + 1;
var depthPerPass = .1;
gcode = [
  'G90',
];

var bitDiameter = 1/4*25.4;
var bitRadius = bitDiameter/2;

function move(coords) {
  var parts = [
    'G1',
  ];

  for (var coord in coords) {
    if (coords.hasOwnProperty(coord)) {
      parts.push(coord.toUpperCase() + coords[coord]);
    }
  }

  gcode.push(parts.join(' '));
}


function generateCircle(diameter, startz, endz) {
  var radius = diameter / 2;
  gcode.push('G1 Z0 F1000');

  var lfeed = feed*4;

  gcode.push('G1 X-' + radius + 'F' + lfeed);
  for (var i=startz; i<=endz; i+=depthPerPass) {

    gcode.push(['G1', 'Z' + i, 'F' + zfeed].join(' '));
    gcode.push('G02' +  'X0. Y' + radius + ' I' + radius + ' J0. F' + lfeed);
    gcode.push('G02' +  'X' + radius + 'Y0. I0. J-' + radius);
    gcode.push('G02' +  'X0. Y-' + radius + ' I-' + radius + ' J0');
    gcode.push('G02' +  'X-' + radius + ' Y0. I0. J' + radius);
  }

  gcode.push('G1 Z0 F1000');
  gcode.push('G1 Y0 X0 F' + feed);
}

var drill = function(depth, speed) {
  move({ z: depth, f: speed });
  move({ z: 0, f: zfeed });
};

generateCircle(36-bitDiameter, 0, materialHeight);

// touch the holes
move({ x: -41 , y: -58.5, f: feed });
drill(3, zfeed/6);

// acme hole
move({ x: -62 , y: 0, f: feed });
drill(3, zfeed/6);

move({ x: -41 , y: 58.5, f: feed });
drill(3, zfeed/6);

move({ x: 19 , y: 58.5, f: feed });
drill(3, zfeed/6);

move({ x: 19 , y: -58.5, f: feed });
drill(3, zfeed/6);


// cut the outline
move({ x : 30 + bitRadius, y: -69.5 - bitRadius, f: feed });

for (var depth=0; depth<=materialHeight; depth+=depthPerPass) {
  move({ z: depth, f : zfeed });

  move({ x : -52 - bitRadius, y: -69.5 - bitRadius, f: feed });
  move({ x : -75 - bitRadius, y: -11 - bitRadius, f: feed });
  move({ x : -75 - bitRadius, y: 11 + bitRadius, f: feed });
  move({ x : -52 - bitRadius, y: 69.5 + bitRadius, f: feed });
  move({ x : 30 + bitRadius, y: 69.5 + bitRadius, f: feed });

  // return to origin
  move({ x : 30 + bitRadius, y: -69.5 - bitRadius, f: feed });
}

gcode.push('G1 Z0 F' + zfeed);
gcode.push('G1 X0 Y0 F' + feed);

console.log(gcode.join('\n'));