X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=filamentspool.scad;h=4c930fddb2d2b203084111a7449923fa97dad396;hp=65592f501de01f47b5c5b8b1604b9620c961a46b;hb=6610e5b1c41deb8136b2092e2577ebc7dbf4cd12;hpb=b6b7ab084845af53765a57e24b5e96c284763c6f

diff --git a/filamentspool.scad b/filamentspool.scad
index 65592f5..4c930fd 100644
--- a/filamentspool.scad
+++ b/filamentspool.scad
@@ -1,7 +1,18 @@
+// -*- C -*-
+
+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;
@@ -10,23 +21,32 @@ ratchettoothheight=5;
 ratchettoothsmoothr=1;
 ratchettoothslope=0.75;
 overlap=0.5;
-cupbigrad=35;
+cupbigrad=20;
+
+xstraightmul = 1.75;
+
+propxshift = 0;
+
+doveclipheight = 10;
+
+teethh=3;
+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;
 
@@ -34,6 +54,7 @@ ratchetpawl=ratchetstep-ratchettooth-bigslop*2;
 
 include <doveclip.scad>
 include <cliphook.scad>
+include <filamentteeth.scad>
 
 channelwidth = prongthick + slop;
 channeldepth = prongwidth + ratchettoothheight;
@@ -41,8 +62,6 @@ totalwidth = armendwallthick*2 + channelwidth;
 totalheight = channeldepth + armendbasethick;
 stalkwidth = prongwidth + prongstalkxwidth;
 
-doveclipheight = totalheight;
-
 module ArmEnd(length=120){
   translate([ratchettoothsmoothr, channelwidth/2, -armendbasethick]) {
     rotate([0,0,-90])
@@ -53,9 +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);
@@ -64,7 +85,7 @@ module ArmEnd(length=120){
 			[	0,	0,	1,	0	],
 			[	0,	0,	0,	1	]])
 	cube([ratchettooth - ratchettoothsmoothr*2,
-	      channelwidth, ratchettoothheight]);
+	      channelwidth, ratchettoothheight - ratchettoothsmoothr]);
     }
   }
 }
@@ -84,14 +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);
   }
@@ -105,7 +126,8 @@ module FilamentCup() {
   FilamentCupHandle();
 
   dx = cupbigrad + prongwidth;
-  dy = cupbigrad + prongwidth + overclipcupgap;
+  gapy = prongwidth;
+  dy = cupbigrad + gapy + overclipcupgap;
 
   translate([dx, dy, 0])
     FilamentCupCup();
@@ -114,14 +136,19 @@ 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])
+  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([0, overclipcupgap, 0])
+    rotate([0,0, 102 + fdia])
+    FilamentTeeth(fdia=fdia, h=teethh);
 }
 
 module CupSecuringClipSolid(w,d,h1,h2){
@@ -150,10 +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(){
+  DoveClipPin(h=doveclipheight);
+}
+
+module Hub(){
+  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();
+//CupSecuringClip();
+
+Hub();