trailerhubcap for print

[reprap-play.git] / filamentspool.scad

diff --git a/filamentspool.scad b/filamentspool.scad
index 89f3cfb3a0ac97e069efddde6a57a01fd7fb87d7..55da1ac7324eb27a81e7bf1aae1f0eab5ddc893b 100644 (file)
--- a/filamentspool.scad
+++ b/filamentspool.scad
@@ -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;
@@ -52,7 +56,7 @@ armendwallthick=2.5;
 armendbasethick=1.2;
 
 axlehorizoffset = 12.5;
-axlevertheight = 80;
+axlevertheight = 100;
 towercliph = 16;
 towerclipcount = 3;
 towerpillarw = 5;
@@ -61,7 +65,11 @@ 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;
 
@@ -198,6 +206,10 @@ module ArmDoveClipPin(){ ////toplevel
   DoveClipPin(h=doveclipheight);
 }
 
+module TowerDoveClipPin(){ ////toplevel
+  DoveClipPin(h=towercliph/2);
+}
+
 module Hub(){ ////toplevel
   difference(){
     cylinder($fn=60, h=hublthick, r=hubbigrad);
@@ -257,8 +269,9 @@ module AxlePin(){ ////toplevel
 module Axle(){ ////toplevel
   pillarswidth = DoveClipPairSane_width(towerclipcount);
 
-if(0)
+  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])
@@ -268,7 +281,7 @@ 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;
@@ -280,32 +293,78 @@ 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){
+  difference(){
+    cylinder(h=thick, r=washerrad);
+    translate([0,0,-1]) cylinder(h=washerthick+2, r=hubaxlerad+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();
@@ -316,3 +375,4 @@ module AxleWasher(){ ////toplevel
 //Axle();
 //AxleWasher();
 //AxlePin();
+//AxleFrictionWasher();