X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=filamentspool.scad;h=c2353fdbb7b79a8e8cfb89f12cb7a0e6b92b7dc4;hp=c88e30c44844bf32a32b7e716cc896831dd6fb0e;hb=077795c844ab3ea07f3c4b624bbd2a1abc5da8a8;hpb=6e7616f48b9fb591cbf58b7f344d74c86d064d5c

diff --git a/filamentspool.scad b/filamentspool.scad
index c88e30c..c2353fd 100644
--- a/filamentspool.scad
+++ b/filamentspool.scad
@@ -1,3 +1,6 @@
+// -*- C -*-
+
+fdia=1.75;
 
 slop=0.5;
 bigslop=slop*2;
@@ -10,6 +13,27 @@ ratchettoothheight=5;
 ratchettoothsmoothr=1;
 ratchettoothslope=0.75;
 overlap=0.5;
+cupbigrad=35;
+
+doveclipheight = 10;
+
+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;
@@ -17,13 +41,14 @@ armendbasethick=1.2;
 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;
-
-doveclipheight = totalheight;
+stalkwidth = prongwidth + prongstalkxwidth;
 
 module ArmEnd(length=120){
   translate([ratchettoothsmoothr, channelwidth/2, -armendbasethick]) {
@@ -31,13 +56,13 @@ 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);
@@ -51,11 +76,13 @@ module ArmEnd(length=120){
   }
 }
 
-module FilamentHandle(stalklength=50){
+module FilamentCupHandle(){
   pawlusewidth = ratchetpawl-ratchettoothsmoothr*2;
   mirror([0,1,0]) {
-    cube([stalklength, prongwidth, prongthick]);
-    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	],
@@ -70,5 +97,79 @@ module FilamentHandle(stalklength=50){
   }
 }
 
+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);
+  }
+}
+
+module ArmDoveClipPin(){
+  DoveClipPin(h=doveclipheight);
+}
+
 //ArmEnd();
-FilamentHandle();
+//FilamentCup();
+//CupSecuringClip();