feet

1 files changed, 43 insertions, 1 deletions

diff --git a/delta.jscad b/delta.jscad
index b718fd4..fa33a0d 100644
--- a/delta.jscad
+++ b/delta.jscad
@@ -22,24 +22,32 @@ var CONFIG = {
   sr: 220/2-4.5,	// radius of the screwholes circle
   h: 3+1.5		// thickness (including insulation)
  },
  glass: {
   r: 195/2,		// glass radius
   h: 3			// glass thickness
  },
  duet: {
   pcb_size: { x: 124, y: 100, z: 1 },
   hole_spacing: { x: 115, y: 92 },
   h: 30
  },
+ foot: {
+  d: 20*Math.sqrt(2), h: 30,
+  bolt: { d:5, l: 19, hd: 10 },
+  margin: 2.5,
+  nut: { d: 8.6 /* TODO: */, h: 3.5 },
+  shell: 4,
+  zscalefactor: 1.6
+ },
  hotend: {
   h: 62.4, 			// full assembly height
   groove: { d:12, h:6 }, 	// grove diameter and height
   ungroove: { d:16, above:3.7, below: 3+4 }
  },
  effector: {
   h: 6,
   o: 20,	// offset to the rod mounts line
   rods_apart: 40,
   cone: { shell: 1, angle: Math.PI/6 },
   rodend: {
    joint_w: 7,	// thickness of the joint
@@ -73,25 +81,26 @@ var CONFIG = {
    width: 3, height: 5+1, length: 6
   },
   fanholder: {
    r: 30,
    screw: { d: 3, m: 2.5/*margin*/ },
    w: 3
   }
  },
  nut: { h: 2.3, w: 5.5 },
  color: {
   extrusion: [0.8, 0.8, 0.8, 0.8],
   pcb: [ 0, 0.3, 0.2, 0.8 ],
-  bulk: [ .9, .9, .9, .2 ]
+  bulk: [ .9, .9, .9, .2 ],
+  parts: [ 0, 0.8, 0, 0.9 ]
  }
 };
 
 var CD = {
  base: (function(){
   var rv = {};
   rv.circumscription_r =
    CONFIG.base.sl/2/Math.cos(Math.PI/6);
   rv.outer_inscription_r =
    Math.sqrt(Math.pow(rv.circumscription_r,2)-
     Math.pow(CONFIG.base.sl/2,2));
   rv.mid_inscription_r =
@@ -575,40 +584,73 @@ function duet() {
  }).subtract(holes).setColor(CONFIG.color.pcb).union(
   CSG.cube({
    corner1: [-C.pcb_size.x/2,-C.hole_spacing.y/2+3,C.pcb_size.z],
    corner2: [ C.pcb_size.x/2, C.hole_spacing.y/2-3,C.h]
   }).setColor(CONFIG.color.bulk)
  );
  rv.properties.holes = pholes;
  rv.properties.P = new CSG.Connector([0,0,0],[0,0,1],[1,0,0]);
  rv.properties.vitamin = true;
  return rv;
 }
 
+function foot() {
+ var F = CONFIG.foot;
+ var br = F.bolt.hd/2+F.margin;
+ var bh = F.zscalefactor*Math.sqrt(Math.pow(F.d/2,2)-Math.pow(br,2));
+ var th = F.h-bh;
+ var r = 2*F.d;
+ var rv = CSG.sphere({ // botom contorted sphere
+  center: [0,0,0], radius: F.d/2, resolution: r
+ }).scale([1,1,F.zscalefactor]).translate([0,0,bh]).union(CSG.cylinder({ // top hat
+  start: [0,0,bh], end: [0,0,F.h], radius: F.d/2, resolution: r
+ })).intersect(CSG.cylinder({ // cut off excess
+  start: [0,0,0], end: [0,0,F.h], radius: F.d
+ })).subtract([
+   CSG.cylinder({ // bolt hole
+   start: [0,0,-1], end: [0,0,F.h+1], radius: F.bolt.d/2+PRINT.slide_tolerance
+  }), CSG.cylinder({ // nut hole
+   start: [0,0,F.h-F.nut.h-PRINT.play_tolerance],
+   end: [0,0,F.h],
+   radius: F.nut.d/2+PRINT.slide_tolerance, resolution: 6
+  }), CSG.cylinder({ // bolthead/washer hole
+   start: [0,0,-1], end: [0,0,F.h-F.nut.h-PRINT.play_tolerance-F.shell],
+   radius: F.bolt.hd/2+PRINT.play_tolerance
+  })
+ ]).union(CSG.cylinder({ // bridging patch
+  start: [0,0,F.h-F.nut.h-PRINT.play_tolerance-PRINT.layer_height],
+  end: [0,0,F.h-F.nut.h-PRINT.play_tolerance],
+  radius: F.nut.d/2
+ }));
+ rv.properties.P = new CSG.Connector([0,0,F.h],[0,0,-1],[1,0,0]);
+ return rv.setColor(CONFIG.color.parts);
+}
+
 function refaxes(o) {
  if(!o) o = {};
  var l = o.l||20, g = o.g||0.7;
  return union([
   CSG.cylinder({start:[0,0,0],end:[l,0,0]}).setColor([1,0,0,g]),
   CSG.cylinder({start:[0,0,0],end:[0,l,0]}).setColor([0,1,0,g]),
   CSG.cylinder({start:[0,0,0],end:[0,0,l]}).setColor([0,0,1,g])
  ]);
 }
 
 function P(x) {
  return x.connectTo(x.properties.P,new CSG.Connector([0,0,0],[0,0,1],[1,0,0]), false, 0);
 }
 
 var PARTS = {
  wip: function(params) {
+  return foot();
   return union(base_extrusions(),column_extrusions(),duet());
  }
 };
 
 function main(params) {
  var part = params.part && PARTS[params.part];
  if(!part) return refaxes();
  var rv = P(part(params));
  if(!params.print) rv = rv.union(refaxes());
  return rv;
 }