X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=filamentspool.scad;h=14009e116cc8fc02f1ff6d3c771ef288cbb9c76d;hp=01c7a2fae95de67117239dea16bd8bae6b97e04f;hb=81514383e39c6dbb78447db34e5c2e0b8428321f;hpb=3d0858f159f200f518308b1068cabb066534bb3c

diff --git a/filamentspool.scad b/filamentspool.scad
index 01c7a2f..14009e1 100644
--- a/filamentspool.scad
+++ b/filamentspool.scad
@@ -1,4 +1,6 @@
 
+fdia=1.75;
+
 slop=0.5;
 bigslop=slop*2;
 
@@ -12,9 +14,23 @@ ratchettoothslope=0.75;
 overlap=0.5;
 cupbigrad=35;
 
-stalklength=50;
+teethh=3;
+teethgapx=4+fdia;
+
+prongstalkxwidth=3;
+
+stalklength=40;
 overclipcupgap=5;
-overclipheight=15;
+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;
@@ -23,11 +39,13 @@ ratchetpawl=ratchetstep-ratchettooth-bigslop*2;
 
 include <doveclip.scad>
 include <cliphook.scad>
+include <filamentteeth.scad>
 
 channelwidth = prongthick + slop;
 channeldepth = prongwidth + ratchettoothheight;
 totalwidth = armendwallthick*2 + channelwidth;
 totalheight = channeldepth + armendbasethick;
+stalkwidth = prongwidth + prongstalkxwidth;
 
 doveclipheight = totalheight;
 
@@ -37,13 +55,13 @@ module ArmEnd(length=120){
       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);
@@ -57,13 +75,13 @@ module ArmEnd(length=120){
   }
 }
 
-module FilamentHandle(){
+module FilamentCupHandle(){
   pawlusewidth = ratchetpawl-ratchettoothsmoothr*2;
   mirror([0,1,0]) {
-    cube([stalklength, prongwidth, prongthick]);
-    translate([stalklength, prongwidth/2, 0])
-      cylinder(r=prongwidth/2, h=prongthick, $fn=20);
-    translate([ratchettoothsmoothr, prongwidth, 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	],
@@ -90,26 +108,63 @@ module FilamentCupCup(){
 }
 
 module FilamentCup() {
-  FilamentHandle();
+  FilamentCupHandle();
 
   dx = cupbigrad + prongwidth;
-  dy = cupbigrad + prongwidth + overclipcupgap;
+  gapy = prongwidth;
+  dy = cupbigrad + gapy + overclipcupgap;
 
   translate([dx, dy, 0])
     FilamentCupCup();
   translate([0, -1, 0]);
   cube([prongwidth, dy+1, prongthick]);
 
-  propshift = stalklength - overclipheight - prongthick;
-  proptaken = propshift + prongthick;
-  echo(cupbigrad, dx, propshift, proptaken);
+  midrad = cupbigrad + prongwidth/2;
+
+  propshift = stalklength - overclipdepth - prongthick;
+  proptaken = propshift;
+  echo(cupbigrad, dx, midrad, propshift, proptaken);
 
-  translate([propshift, -1, 0])
+  translate([propshift, -1, 0]) {
     cube([prongwidth,
-	  sqrt(cupbigrad*cupbigrad - proptaken*proptaken)
-	  + overclipcupgap + prongthick + 1,
+	  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();
+//FilamentCup();
+CupSecuringClip();