X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=filamentspool.scad;h=5fdd147e41fbe8fe74e3e84178f6cdc33b59616e;hp=a0ca9d9e2f54de1385c593a4ef663135e46b8fd0;hb=f6038e5cc0cfb046fdbaf699f5be49807eb5c2a7;hpb=ffdb1be0b2771deee73d986c2fff0e94abc850b8

diff --git a/filamentspool.scad b/filamentspool.scad
index a0ca9d9..5fdd147 100644
--- a/filamentspool.scad
+++ b/filamentspool.scad
@@ -1,5 +1,8 @@
 
+fdia=1.75;
+
 slop=0.5;
+bigslop=slop*2;
 
 prongthick=5;
 prongwidth=5;
@@ -9,36 +12,56 @@ ratchettoothheight=5;
 ratchettoothsmoothr=1;
 ratchettoothslope=0.75;
 overlap=0.5;
+cupbigrad=35;
+
+teethh=3;
+teethgapx=4+fdia;
+
+prongstalkxwidth=3;
+
+stalklength=40;
+overclipcupgap=5;
+overclipdepth=15;
+overcliproundr=2.0;
+overclipthick=0.5;
+
+wingspoke=3;
+wingsize=6;
+wingthick=3;
+
+overclipsmaller=-1.0;
+overclipbigger=2.0;
 
 armendwallthick=2.5;
 armendbasethick=1.2;
 
-include <doveclip.scad>
+ratchetpawl=ratchetstep-ratchettooth-bigslop*2;
 
-module ArmEnd(length=120){
-  channelwidth = prongthick + slop;
-  channeldepth = prongwidth + ratchettoothheight;
-  totalwidth = armendwallthick*2 + channelwidth;
-  totalheight = channeldepth + armendbasethick;
+include <doveclip.scad>
+include <cliphook.scad>
+include <filamentteeth.scad>
 
-  basecube = 5;
+channelwidth = prongthick + slop;
+channeldepth = prongwidth + ratchettoothheight;
+totalwidth = armendwallthick*2 + channelwidth;
+totalheight = channeldepth + armendbasethick;
+stalkwidth = prongwidth + prongstalkxwidth;
 
-  translate([0, 3, -armendbasethick]) {
-    translate([-basecube+0.5, -7.5, 0])
-      cube([basecube, 15, totalheight]);
+doveclipheight = totalheight;
 
-    translate([-basecube+2,0,0])
-      rotate([0,0,-90])
-      DoveClipPair(h=totalheight);
+module ArmEnd(length=120){
+  translate([ratchettoothsmoothr, channelwidth/2, -armendbasethick]) {
+    rotate([0,0,-90])
+      DoveClipPairBase(h=doveclipheight);
   }
 
-  for (dx = [0 : ratchetstep : length]) translate([dx,0,0]) {
-    difference(){
-      translate([0, -armendwallthick, -armendbasethick])
-	cube([ratchetstep+overlap, totalwidth, totalheight]);
-      translate([-1, 0, 0])
-	cube([ratchetstep+overlap+2, channelwidth, channeldepth+1]);
-    }
+  difference(){
+    translate([0, -armendwallthick, -armendbasethick])
+      cube([length, totalwidth, totalheight]);
+    translate([-1, 0, 0])
+      cube([length+2, channelwidth, channeldepth+1]);
+  }
+  for (dx = [0 : ratchetstep : length - stalklength]) translate([dx,0,0]) {
     translate([ratchettoothsmoothr+0.5, armendwallthick/2, 0]) minkowski(){
       rotate([90,0,0])
 	cylinder($fn=20, r=ratchettoothsmoothr, h=armendwallthick);
@@ -52,4 +75,96 @@ module ArmEnd(length=120){
   }
 }
 
-ArmEnd();
+module FilamentCupHandle(){
+  pawlusewidth = ratchetpawl-ratchettoothsmoothr*2;
+  mirror([0,1,0]) {
+    cube([stalklength, stalkwidth, prongthick]);
+    translate([stalklength, stalkwidth/2, 0])
+      cylinder(r=stalkwidth/2, h=prongthick, $fn=20);
+    translate([ratchettoothsmoothr, stalkwidth, 0]) {
+      minkowski(){
+	cylinder($fn=20,r=ratchettoothsmoothr, h=1);
+	multmatrix([	[	1, -ratchettoothslope, 0, 0	],
+			[	0,	1,	0,	0	],
+			[	0,	0,	1,	0	],
+			[	0,	0,	0,	1	]])
+	  cube([pawlusewidth,
+		ratchettoothheight - ratchettoothsmoothr,
+		prongthick]);
+      }
+    }
+  }
+}
+
+module FilamentCupCup(){
+  xstraight = cupbigrad;
+  linear_extrude(height=prongthick) {
+    FlatArc(0,0, cupbigrad,cupbigrad+prongwidth, 89,271, $fn=80);
+  }
+  for (my=[0,1]) mirror([0,my,0]) {
+    translate([0,cupbigrad,0])
+      cube([xstraight, prongwidth, prongthick]);
+  }
+}
+
+module FilamentCup() {
+  FilamentCupHandle();
+
+  dx = cupbigrad + prongwidth;
+  gapy = prongwidth;
+  dy = cupbigrad + gapy + overclipcupgap;
+
+  translate([dx, dy, 0])
+    FilamentCupCup();
+  translate([0, -1, 0]);
+  cube([prongwidth, dy+1, prongthick]);
+
+  midrad = cupbigrad + prongwidth/2;
+
+  propshift = stalklength - overclipdepth - prongthick;
+  proptaken = propshift;
+  echo(cupbigrad, dx, midrad, propshift, proptaken);
+
+  translate([propshift, -1, 0]) {
+    cube([prongwidth,
+	  dy - sqrt(midrad*midrad - proptaken*proptaken),
+	  prongthick]);
+  }
+  translate([stalklength + overclipdepth, gapy, 0])
+    rotate([0,0,-(10 + fdia)])
+    FilamentTeeth(fdia=fdia, h=teethh);
+}
+
+module CupSecuringClipSolid(w,d,h1,h2){
+  rotate([0,-90,0]) translate([0,-h1/2,-w/2]) linear_extrude(height=w) {
+    polygon(points=[[0,0], [d,0], [d,h2], [0,h1]]);
+  }
+}
+
+module CupSecuringClipSolidSmooth(xrad=0, xdepth=0){
+  hbase = totalheight + prongstalkxwidth - overcliproundr*2;
+  minkowski(){
+    CupSecuringClipSolid(w=totalwidth,
+			 d=overclipdepth + xdepth,
+			 h1=hbase - overclipsmaller,
+			 h2=hbase + overclipbigger);
+    cylinder($fn=20, h=0.01, r=overcliproundr+xrad);
+  }
+}
+
+module CupSecuringClip(){
+  wingswidth = wingspoke*2 + overclipthick*2 + overcliproundr*2 + totalwidth;
+  difference(){
+    union(){
+      CupSecuringClipSolidSmooth(xrad=overclipthick, xdepth=0);
+      translate([-wingswidth/2, -wingsize/2, 0])
+	cube([wingswidth, wingsize, wingthick]);
+    }
+    translate([0,0,-0.1])
+      CupSecuringClipSolidSmooth(xrad=0, xdepth=5);
+  }
+}
+
+//ArmEnd();
+//FilamentCup();
+//CupSecuringClip();