X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=filamentspool.scad;h=4e69f42dbf6effc557838d7be9b7114c3f86962d;hp=ce70ce97deb146f1365d95ffda73c7333d24c895;hb=04e4c2aa25e11210f6e1ffbf4fb34848d2bf30f1;hpb=93e75099ed8f21131e5dfc83a9aaa6bfc7d39110

diff --git a/filamentspool.scad b/filamentspool.scad
index ce70ce9..4e69f42 100644
--- a/filamentspool.scad
+++ b/filamentspool.scad
@@ -1,33 +1,37 @@
 // -*- C -*-
 
-fdia=1.75;
+fdia=2.85;
 
 slop=0.5;
 bigslop=slop*2;
 
+function selsz(sm,lg) = fdia < 2 ? sm : lg;
+function usedove() = selsz(true,false);
+
+num_arms = selsz(3,4);
+
 exteffrad = 70;
-hubeffrad = 30;
-hubbigrad = 20;
-hublwidth = 3;
+hubeffrad = selsz(30, 50);
+hubbigrad = selsz(20, 45);
+hublwidth = selsz(3, 5);
 hubstemwidth = 2;
 hublthick = 10;
-hubaxlelen = 25;
-hubaxlerad = 5;
+hubaxlerad = selsz(5, 17/2);
 totalheightfromtower = 240;
 axletowerfudgebend = 0;
 axleaxlefudgebend = 3;
+axlepadlen = 1.0;
 
-prongthick=5;
-prongwidth=5;
+prongthick=selsz(5,7);
+prongwidth=selsz(5,7);
 ratchetstep=15;
 ratchettooth=3;
 ratchettoothheight=5;
 ratchettoothsmoothr=1;
 ratchettoothslope=0.75;
 overlap=0.5;
-cupbigrad=20;
-
-xstraightmul = 1.75;
+cupwidth=selsz(40,60);
+cupheight=selsz(55,75);
 
 propxshift = 0;
 
@@ -38,11 +42,14 @@ teethgapx=4+fdia;
 
 prongstalkxwidth=3;
 
-stalklength=35;
+stalklength=selsz(35,55);
 overclipcupgap=5;
 overclipdepth=15;
 overcliproundr=2.0;
-overclipthick=0.5;
+overclipthick=1.0;
+overclipcupnextgap=20;
+
+hubaxlelen = selsz(25, cupwidth);
 
 overclipsmaller=-2.5;
 overclipbigger=0.0;
@@ -64,13 +71,26 @@ axlepinrad = 2;
 axlepintabrad = 5;
 
 washerthick = 1.2;
+washerthinthick = 0.8;
+washerverythinthick = 0.4;
 washerrad = hubaxlerad + 7.5;
+frictionwasherarmwidth = 3;
+frictionwasherextrapush = 1.0;
 
 ratchetpawl=ratchetstep-ratchettooth-bigslop*2;
 
+nondove_armbase = 100;
+nondove_armhole_x = 60;
+nondove_armhole_hole = 4;
+nondove_armhole_support = 7;
+nondove_armhole_wall = 4;
+nondove_armhole_slop = 0.5;
+nondove_armhole_slop_x = 0.5;
+
 include <doveclip.scad>
 include <cliphook.scad>
 include <filamentteeth.scad>
+include <axlepin.scad>
 
 channelwidth = prongthick + slop;
 channeldepth = prongwidth + ratchettoothheight;
@@ -79,9 +99,21 @@ totalheight = channeldepth + armendbasethick;
 stalkwidth = prongwidth + prongstalkxwidth;
 
 module ArmEnd(length=120){ ////toplevel
-  translate([ratchettoothsmoothr, channelwidth/2, -armendbasethick]) {
-    rotate([0,0,-90])
-      DoveClipPairBase(h=doveclipheight);
+  if (usedove()) {
+    translate([ratchettoothsmoothr, channelwidth/2, -armendbasethick]) {
+      rotate([0,0,-90])
+	DoveClipPairBase(h=doveclipheight);
+    }
+  } else {
+    difference(){
+      translate([1, -armendwallthick, -armendbasethick])
+	mirror([1,0,0])
+	cube([nondove_armbase+1, totalwidth, totalheight]);
+      translate([-nondove_armbase + nondove_armhole_x,
+		 -armendwallthick + totalwidth/2,
+		 -armendbasethick -1])
+	cylinder(r= nondove_armhole_hole/2, h=totalheight+2, $fn=10);
+    }
   }
 
   difference(){
@@ -128,43 +160,45 @@ module FilamentCupHandle(){
 }
 
 module FilamentCupCup(){
-  xstraight = cupbigrad * xstraightmul;
-  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]);
+    translate([0,cupwidth/2,0])
+      cube([cupheight + prongwidth, prongwidth, prongthick]);
   }
 }
 
 module FilamentCup() { ////toplevel
   FilamentCupHandle();
 
-  dx = cupbigrad + prongwidth;
   gapy = prongwidth;
-  dy = cupbigrad + gapy + overclipcupgap;
+  dy = cupwidth/2 + gapy + overclipcupgap;
+  baselen = dy+cupwidth/2;
 
-  translate([dx, dy, 0])
+  translate([0, dy, 0])
     FilamentCupCup();
-  translate([0, -1, 0]);
-  cube([prongwidth, dy+1, prongthick]);
+  cube([prongwidth, baselen+1, prongthick]);
 
-  midrad = cupbigrad + prongwidth/2;
+  midrad = cupwidth/2 + prongwidth/2;
 
   propshift = stalklength - overclipdepth - prongthick + propxshift;
   proptaken = propshift;
-  echo(cupbigrad, dx, midrad, propshift, proptaken);
+  echo(midrad, propshift, proptaken);
 
   translate([propshift, -1, 0]) {
     // something is wrong with the y calculation
     cube([prongwidth,
-	  dy - sqrt(midrad*midrad - proptaken*proptaken) - prongwidth/2,
+	  gapy+2,
 	  prongthick]);
   }
-  translate([0, overclipcupgap, 0])
-    rotate([0,0, 102 + fdia])
-    FilamentTeeth(fdia=fdia, h=teethh);
+  for (y = [overclipcupgap, overclipcupgap+overclipcupnextgap]) {
+    translate([0, y, 0])
+      rotate([0,0, 102 + fdia])
+      FilamentTeeth(fdia=fdia, h=teethh);
+  }
+  for (x = [-0.3, -1.3]) {
+    translate([cupheight + overclipcupnextgap*x, baselen + prongthick, 0])
+      rotate([0,0, 12 + fdia])
+      FilamentTeeth(fdia=fdia, h=teethh);
+  }      
 }
 
 module CupSecuringClipSolid(w,d,h1,h2){
@@ -191,6 +225,8 @@ module CupSecuringClip(){ ////toplevel
       CupSecuringClipSolidSmooth(xrad=overclipthick, xdepth=0);
       translate([-wingswidth/2, -wingsize/2, 0])
 	cube([wingswidth, wingsize, wingthick]);
+      translate([-wingsize/2, -wingswidth/2, 0])
+	cube([wingsize, wingswidth, wingthick]);
     }
     translate([0,0,-0.1])
       CupSecuringClipSolidSmooth(xrad=0, xdepth=0.2);
@@ -201,41 +237,69 @@ module ArmDoveClipPin(){ ////toplevel
   DoveClipPin(h=doveclipheight);
 }
 
+module TowerDoveClipPin(){ ////toplevel
+  DoveClipPin(h=towercliph/2);
+}
+
 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($fn=60, h=hubaxlelen+2, r=axlerad);
-  }
+  xmin = axlerad+hublwidth/2;
+  xmax = hubbigrad-hublwidth/2;
   hole = hubeffrad - hubbigrad - DoveClip_depth() - hublwidth*2;
   holewidth = DoveClipPairSane_width() - hubstemwidth*2;
-  for (ang=[0,120,240])
-    rotate([0,0,ang]) {
-      difference() {
-	translate([hubeffrad,0,0])
-	  DoveClipPairSane(h=doveclipheight,
-			   baseextend = (hubeffrad - DoveClip_depth()
-					 - hubbigrad + hublwidth));
-	if (hole>hublwidth && holewidth > 2) {
-	  translate([hubbigrad + hublwidth, -holewidth/2, -1])
-	    cube([hole, holewidth, hublthick+2]);
-	}
+  nondove_allwidth = nondove_armhole_wall*2 + totalwidth;
+  difference(){
+    union(){
+      difference(){
+	cylinder($fn=60, h=hublthick, r=hubbigrad);
+	translate([0,0,-1])
+	  cylinder($fn=30, h=hublthick+2, r=(hubbigrad-hublwidth));
       }
+      cylinder(h=hubaxlelen, r=axlerad+hublwidth);
+      for (ang=[0 : 360/num_arms : 359])
+	rotate([0,0,ang]) {
+	  difference() {
+	    if (usedove()){
+	      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]);
+	      }
+	    } else {
+	      difference(){
+		translate([0,
+			   -nondove_allwidth/2,
+			   0])
+		  cube([hubeffrad + nondove_armhole_x
+			+ nondove_armhole_hole/2 + nondove_armhole_support,
+			nondove_allwidth,
+			nondove_armhole_wall + totalheight]);
+		translate([hubeffrad - nondove_armhole_slop_x,
+			   -nondove_allwidth/2
+			   + nondove_armhole_wall - nondove_armhole_slop,
+			   nondove_armhole_wall])
+		  cube([nondove_armhole_x + 50,
+			totalwidth + nondove_armhole_slop*2,
+			totalheight + 1]);
+		translate([hubeffrad + nondove_armhole_x, 0, -20])
+		   cylinder(r= nondove_armhole_hole/2, h=50, $fn=10);
+	      }
+	    }
+	  }
+	}
+      for (ang = [0 : 180/num_arms : 359])
+	rotate([0,0,ang]) rotate([90,0,0]) {
+	  translate([0,0,-hublwidth/2])
+	    linear_extrude(height=hublwidth)
+	    polygon([[xmin,0.05], [xmax,0.05],
+		     [xmax,hublthick-0.2], [xmin, hubaxlelen-0.2]]);
+	}
     }
-  xmin = axlerad+hublwidth/2;
-  xmax = hubbigrad-hublwidth/2;
-  for (ang = [0 : 60 : 359])
-    rotate([0,0,ang]) rotate([90,0,0]) {
-      translate([0,0,-hublwidth/2])
-	linear_extrude(height=hublwidth)
-	polygon([[xmin,0.05], [xmax,0.05],
-		 [xmax,hublthick-0.2], [xmin, hubaxlelen-0.2]]);
-    }
+    translate([0,0,-1]) cylinder($fn=60, h=hubaxlelen+2, r=axlerad);
+  }
 }
 
 module ArmExtender(){ ////toplevel
@@ -244,23 +308,13 @@ module ArmExtender(){ ////toplevel
 		   hb=doveclipheight);
 }
 
-module AxlePin(){ ////toplevel
-  pinr = axlepinrad - slop;
-  intersection(){
-    translate([0, 0, pinr*0.7]) {
-      translate([0, -washerrad, 0]) rotate([-90,0,0])
-	cylinder(r=pinr, h=washerrad*2, $fn=10);
-      translate([-axlepintabrad, hubaxlerad, -axlepinrad])
-	cube([axlepintabrad*2, axlepinrad*2, axlepinrad*2]);
-    }
-    translate([-50,-50,0]) cube([100,100,50]);
-  }
+module FsAxlePin(){ ////toplevel
+  AxlePin(hubaxlerad, washerrad*2, axlepinrad, axlepintabrad, slop);
 }
 
 module Axle(){ ////toplevel
   pillarswidth = DoveClipPairSane_width(towerclipcount);
 
-if(0)
   rotate([0,0, -( axleaxlefudgebend + atan(slop/hubaxlelen) ) ])
   translate([-axlehorizoffset, -axlevertheight, 0]) {
     rotate([0,0,-axletowerfudgebend])
@@ -273,7 +327,7 @@ if(0)
 		      pillarw=towerpillarw);
   }
 
-  axleclearlen = hubaxlelen + slop*3 + washerthick*2;
+  axleclearlen = hubaxlelen + slop*4 + washerthick*2 + axlepadlen;
   axlerad = hubaxlerad-slop;
   bump = axlerad * 0.2;
   shift = axlerad-bump;
@@ -285,32 +339,66 @@ if(0)
 	union(){
 	  translate([-1, 0, 0])
 	    rotate([0,90,0])
-	    cylinder(r = axlerad, h = 1 + axleclearlen + 3 + 2);
+	    cylinder($fn=60,
+		     r = axlerad,
+		     h = 1 + axleclearlen + axlepinrad*2 + 2);
 	  mirror([1,0,0]) rotate([0,90,0])
-	    cylinder(r = washerrad, h = 3);
-if(0)
+	    cylinder(r = axlerad*1.75, h = 3);
 	  intersection(){
-	    mirror([1,0,0]) rotate([0,90,0])
-	      cylinder(r = towercliph - shift,
-		       h = pillarswidth/2 + axlehorizoffset);
+	    mirror([1,0,0])
+	      translate([axlehorizoffset - pillarswidth/2, 0, 0])
+	      rotate([0,90,0])
+	      cylinder($fn=60,
+		       r = towercliph - shift,
+		       h = pillarswidth);
 	    translate([-50, -joinbelowallow, -50])
 	      cube([100, joinbelowallow+50, 100]);
 	  }
 	}
 	rotate([90,0,0])
 	translate([axleclearlen + axlepinrad/2, 0, -25])
-	  cylinder(r=axlepinrad, h=50);
+	  cylinder(r = axlepinrad + slop, h=50);
       }
     }
     translate([-50,-50,0]) cube([100,100,100]);
   }
 }
 
+module washer(thick){
+  Washer(hubaxlerad, washerrad, thick, slop);
+}
+
 module AxleWasher(){ ////toplevel
+  washer(thick=washerthick);
+}
+
+module AxleThinWasher(){ ////toplevel
+  washer(thick=washerthinthick);
+}
+
+module AxleVeryThinWasher(){ ////toplevel
+  washer(thick=washerverythinthick);
+}
+
+module AxleFrictionWasher(){ ////toplevel
   difference(){
     cylinder(h=washerthick, r=washerrad);
     translate([0,0,-1]) cylinder(h=washerthick+2, r=hubaxlerad+slop);
   }
+  frarmr = hubbigrad;
+  frarmw = frictionwasherarmwidth;
+  frarmpawlr = hublwidth;
+  frarmpawlpush = slop*4 + frictionwasherextrapush;
+  for (ang=[0,180]) rotate([0,0,ang]) {
+    translate([washerrad-1, -frarmw/2, 0])
+      cube([frarmr - washerrad + 1, frarmw, washerthick]);
+    intersection(){
+      translate([frarmr - frarmpawlr, -50, 0])
+	cube([frarmpawlr, 100, 50]);
+      rotate([0,90,0])
+	cylinder(h = 50, r = frarmpawlpush, $fn=36);
+    }
+  }
 }
 
 module TowerExtender(){ ////toplevel
@@ -322,11 +410,21 @@ module TowerExtender(){ ////toplevel
 		   pillarw = towerpillarw);
 }
 
+module FilamentCupPair(){ ////toplevel
+  FilamentCup();
+  translate([cupheight + prongthick*3,
+	     cupwidth/2*1.7,
+	     0])
+    rotate([0,0,180]) FilamentCup();
+}
+
 //ArmEnd();
-//FilamentCup();
+FilamentCup();
+//FilamentCupPair();
 //CupSecuringClip();
 //Hub();
 //ArmExtender();
 //Axle();
 //AxleWasher();
 //AxlePin();
+//AxleFrictionWasher();