X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=filamentspool.scad;h=a8955b89f329bc00f3e9ea868a7a4ff5e99c5bf8;hp=e7230b1544c882cabfd8b8404984b2326a7b123e;hb=8f4b4602f373e619c7f2acbc39228b28ba48d6e8;hpb=ad602f0e94f6799569844990ca76b63108e90f96

diff --git a/filamentspool.scad b/filamentspool.scad
index e7230b1..a8955b8 100644
--- a/filamentspool.scad
+++ b/filamentspool.scad
@@ -5,7 +5,7 @@ fdia=1.75;
 slop=0.5;
 bigslop=slop*2;
 
-exteffrad = 85;
+exteffrad = 70;
 hubeffrad = 30;
 hubbigrad = 20;
 hublwidth = 3;
@@ -13,6 +13,10 @@ hubstemwidth = 2;
 hublthick = 10;
 hubaxlelen = 25;
 hubaxlerad = 5;
+totalheightfromtower = 240;
+axletowerfudgebend = 0;
+axleaxlefudgebend = 3;
+axlepadlen = 1.0;
 
 prongthick=5;
 prongwidth=5;
@@ -51,11 +55,28 @@ wingthick=3;
 armendwallthick=2.5;
 armendbasethick=1.2;
 
+axlehorizoffset = 12.5;
+axlevertheight = 100;
+towercliph = 16;
+towerclipcount = 3;
+towerpillarw = 5;
+
+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;
 
 include <doveclip.scad>
 include <cliphook.scad>
 include <filamentteeth.scad>
+include <axlepin.scad>
 
 channelwidth = prongthick + slop;
 channeldepth = prongwidth + ratchettoothheight;
@@ -186,6 +207,10 @@ module ArmDoveClipPin(){ ////toplevel
   DoveClipPin(h=doveclipheight);
 }
 
+module TowerDoveClipPin(){ ////toplevel
+  DoveClipPin(h=towercliph/2);
+}
+
 module Hub(){ ////toplevel
   difference(){
     cylinder($fn=60, h=hublthick, r=hubbigrad);
@@ -225,12 +250,118 @@ module Hub(){ ////toplevel
 
 module ArmExtender(){ ////toplevel
   DoveClipExtender(length=exteffrad-hubeffrad,
-		   pillarw=2,
 		   ha=doveclipheight,
 		   hb=doveclipheight);
 }
 
+module FsAxlePin(){ ////toplevel
+  AxlePin(hubaxlerad, washerrad*2, axlepinrad, axlepintabrad, slop);
+}
+
+module Axle(){ ////toplevel
+  pillarswidth = DoveClipPairSane_width(towerclipcount);
+
+  rotate([0,0, -( axleaxlefudgebend + atan(slop/hubaxlelen) ) ])
+  translate([-axlehorizoffset, -axlevertheight, 0]) {
+    rotate([0,0,-axletowerfudgebend])
+    rotate([0,0,-90])
+      DoveClipPairSane(h=towercliph, count=towerclipcount, baseextend=3);
+    translate([0, DoveClip_depth(), 0])
+    rotate([0,0,90])
+      ExtenderPillars(axlevertheight - DoveClip_depth(),
+		      pillarswidth, towercliph,
+		      pillarw=towerpillarw);
+  }
+
+  axleclearlen = hubaxlelen + slop*4 + washerthick*2 + axlepadlen;
+  axlerad = hubaxlerad-slop;
+  bump = axlerad * 0.2;
+  shift = axlerad-bump;
+  joinbelowallow = 3;
+
+  intersection(){
+    translate([0, 0, shift]) {
+      difference() {
+	union(){
+	  translate([-1, 0, 0])
+	    rotate([0,90,0])
+	    cylinder($fn=60,
+		     r = axlerad,
+		     h = 1 + axleclearlen + axlepinrad*2 + 2);
+	  mirror([1,0,0]) rotate([0,90,0])
+	    cylinder(r = axlerad*1.75, h = 3);
+	  intersection(){
+	    mirror([1,0,0])
+	      translate([axlehorizoffset - pillarswidth/2, 0, 0])
+	      rotate([0,90,0])
+	      cylinder($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 + 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
+  l = totalheightfromtower - axlevertheight;
+  echo("TowerExtender",l);
+  DoveClipExtender(length = l,
+		   ha = towercliph, hb = towercliph,
+		   counta = towerclipcount, countb = towerclipcount,
+		   pillarw = towerpillarw);
+}
+
 //ArmEnd();
 //FilamentCup();
 //CupSecuringClip();
 //Hub();
+//ArmExtender();
+//Axle();
+//AxleWasher();
+//AxlePin();
+//AxleFrictionWasher();