X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=filamentspool.scad;h=04e5c09a1c57150cb90e7fda7774344d04cb755a;hp=c2353fdbb7b79a8e8cfb89f12cb7a0e6b92b7dc4;hb=2f3192186dfa30aba68ad655ac22fc63ca819f3a;hpb=077795c844ab3ea07f3c4b624bbd2a1abc5da8a8

diff --git a/filamentspool.scad b/filamentspool.scad
index c2353fd..04e5c09 100644
--- a/filamentspool.scad
+++ b/filamentspool.scad
@@ -5,6 +5,14 @@ fdia=1.75;
 slop=0.5;
 bigslop=slop*2;
 
+hubeffrad = 30; // + 55;
+hubbigrad = 20;
+hublwidth = 3;
+hubstemwidth = 2;
+hublthick = 10;
+hubaxlelen = 25;
+hubaxlerad = 5;
+
 prongthick=5;
 prongwidth=5;
 ratchetstep=15;
@@ -13,7 +21,11 @@ ratchettoothheight=5;
 ratchettoothsmoothr=1;
 ratchettoothslope=0.75;
 overlap=0.5;
-cupbigrad=35;
+cupbigrad=20;
+
+xstraightmul = 1.75;
+
+propxshift = 0;
 
 doveclipheight = 10;
 
@@ -22,19 +34,19 @@ teethgapx=4+fdia;
 
 prongstalkxwidth=3;
 
-stalklength=40;
+stalklength=35;
 overclipcupgap=5;
 overclipdepth=15;
 overcliproundr=2.0;
 overclipthick=0.5;
 
+overclipsmaller=-2.5;
+overclipbigger=0.0;
+
 wingspoke=3;
 wingsize=6;
 wingthick=3;
 
-overclipsmaller=-1.0;
-overclipbigger=2.0;
-
 armendwallthick=2.5;
 armendbasethick=1.2;
 
@@ -50,7 +62,7 @@ totalwidth = armendwallthick*2 + channelwidth;
 totalheight = channeldepth + armendbasethick;
 stalkwidth = prongwidth + prongstalkxwidth;
 
-module ArmEnd(length=120){
+module ArmEnd(length=120){ ////toplevel
   translate([ratchettoothsmoothr, channelwidth/2, -armendbasethick]) {
     rotate([0,0,-90])
       DoveClipPairBase(h=doveclipheight);
@@ -60,9 +72,11 @@ module ArmEnd(length=120){
     translate([0, -armendwallthick, -armendbasethick])
       cube([length, totalwidth, totalheight]);
     translate([-1, 0, 0])
+      cube([length+1 - ratchettooth, channelwidth, channeldepth+1]);
+    translate([-1, 0, ratchettoothheight])
       cube([length+2, channelwidth, channeldepth+1]);
   }
-  for (dx = [0 : ratchetstep : length - stalklength]) translate([dx,0,0]) {
+  for (dx = [0 : ratchetstep : length - ratchetstep]) translate([dx,0,0]) {
     translate([ratchettoothsmoothr+0.5, armendwallthick/2, 0]) minkowski(){
       rotate([90,0,0])
 	cylinder($fn=20, r=ratchettoothsmoothr, h=armendwallthick);
@@ -71,7 +85,7 @@ module ArmEnd(length=120){
 			[	0,	0,	1,	0	],
 			[	0,	0,	0,	1	]])
 	cube([ratchettooth - ratchettoothsmoothr*2,
-	      channelwidth, ratchettoothheight]);
+	      channelwidth, ratchettoothheight - ratchettoothsmoothr]);
     }
   }
 }
@@ -91,14 +105,14 @@ module FilamentCupHandle(){
 			[	0,	0,	0,	1	]])
 	  cube([pawlusewidth,
 		ratchettoothheight - ratchettoothsmoothr,
-		prongthick]);
+		prongthick - 1]);
       }
     }
   }
 }
 
 module FilamentCupCup(){
-  xstraight = cupbigrad;
+  xstraight = cupbigrad * xstraightmul;
   linear_extrude(height=prongthick) {
     FlatArc(0,0, cupbigrad,cupbigrad+prongwidth, 89,271, $fn=80);
   }
@@ -108,7 +122,7 @@ module FilamentCupCup(){
   }
 }
 
-module FilamentCup() {
+module FilamentCup() { ////toplevel
   FilamentCupHandle();
 
   dx = cupbigrad + prongwidth;
@@ -122,17 +136,18 @@ module FilamentCup() {
 
   midrad = cupbigrad + prongwidth/2;
 
-  propshift = stalklength - overclipdepth - prongthick;
+  propshift = stalklength - overclipdepth - prongthick + propxshift;
   proptaken = propshift;
   echo(cupbigrad, dx, midrad, propshift, proptaken);
 
   translate([propshift, -1, 0]) {
+    // something is wrong with the y calculation
     cube([prongwidth,
-	  dy - sqrt(midrad*midrad - proptaken*proptaken),
+	  dy - sqrt(midrad*midrad - proptaken*proptaken) - prongwidth/2,
 	  prongthick]);
   }
-  translate([stalklength + overclipdepth, gapy, 0])
-    rotate([0,0,-(10 + fdia)])
+  translate([0, overclipcupgap, 0])
+    rotate([0,0, 102 + fdia])
     FilamentTeeth(fdia=fdia, h=teethh);
 }
 
@@ -153,7 +168,7 @@ module CupSecuringClipSolidSmooth(xrad=0, xdepth=0){
   }
 }
 
-module CupSecuringClip(){
+module CupSecuringClip(){ ////toplevel
   wingswidth = wingspoke*2 + overclipthick*2 + overcliproundr*2 + totalwidth;
   difference(){
     union(){
@@ -162,14 +177,53 @@ module CupSecuringClip(){
 	cube([wingswidth, wingsize, wingthick]);
     }
     translate([0,0,-0.1])
-      CupSecuringClipSolidSmooth(xrad=0, xdepth=5);
+      CupSecuringClipSolidSmooth(xrad=0, xdepth=0.2);
   }
 }
 
-module ArmDoveClipPin(){
+module ArmDoveClipPin(){ ////toplevel
   DoveClipPin(h=doveclipheight);
 }
 
+module Hub(){ ////toplevel
+  difference(){
+    cylinder($fn=60, h=hublthick, r=hubbigrad);
+    translate([0,0,-1])
+      cylinder($fn=30, h=hublthick+2, r=(hubbigrad-hublwidth));
+  }
+  axlerad = hubaxlerad + slop;
+  difference(){
+    cylinder(h=hubaxlelen, r=axlerad+hublwidth);
+    translate([0,0,-1]) cylinder($fn=60, h=hubaxlelen+2, r=axlerad);
+  }
+  hole = hubeffrad - hubbigrad - DoveClip_depth() - hublwidth*2;
+  holewidth = DoveClip_width() - hubstemwidth*2;
+  for (ang=[0,120,240])
+    rotate([0,0,ang]) {
+      difference() {
+	translate([hubeffrad,0,0])
+	  DoveClipPairSane(h=doveclipheight,
+			   baseextend = (hubeffrad - DoveClip_depth()
+					 - hubbigrad + hublwidth));
+	if (hole>hublwidth && holewidth > 2) {
+	  translate([hubbigrad + hublwidth, -holewidth/2, -1])
+	    cube([hole, holewidth, hublthick+2]);
+	}
+      }
+    }
+  xmin = axlerad+hublwidth/2;
+  xmax = hubbigrad-hublwidth/2;
+  for (ang = [0 : 60 : 359])
+    rotate([0,0,ang]) rotate([90,0,0]) {
+      translate([0,0,-hublwidth/2])
+	linear_extrude(height=hublwidth)
+	polygon([[xmin,0.05], [xmax,0.05],
+		 [xmax,hublthick-0.2], [xmin, hubaxlelen-0.2]]);
+    }
+}
+
 //ArmEnd();
 //FilamentCup();
 //CupSecuringClip();
+
+Hub();