X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;ds=sidebyside;f=filamenttrestle.scad;h=54bf0c745d9ec443fdc373dacbbe514341caf3c8;hb=1e7315371d2596d828cba3bb73ade1eea88125e9;hp=340a6d5e1ef46887bbe64aa4e335237ab3daed5e;hpb=dbb40611844ae5274c44a16313b4319aff35475e;p=reprap-play.git

diff --git a/filamenttrestle.scad b/filamenttrestle.scad
index 340a6d5..54bf0c7 100644
--- a/filamenttrestle.scad
+++ b/filamenttrestle.scad
@@ -1,17 +1,30 @@
 // -*- C -*-
 
 spoolwidth = 80; // fixme needs to be measured
-trestleheight = 80; // fixme needs to be checked
-trestlebase = 80; // fixme needs to be checked
+spoolinnerrad = 25; // fixme needs to be checked
+spoolouterrad = 60; // fixme needs to be checked
 
 include <doveclip.scad>
 include <axlepin.scad>
 
-spoolinnerslop = 2;
+spoolradclear = 10;
+spoolradslop = 2;
 
-barrad = 7;
+spoolinnerslop = 4.5;
+axleslop = 0.5;
+
+axlerad = 7;
 barwasherrad = 17;
 
+hubbasethick = 6;
+hubmainthick = 20;
+hubbaseweb = 2;
+hubbasestalkwidth = 6;
+hubwalls = 2.5;
+hubpillarw = 4;
+hubbaserad = spoolinnerrad + 15;
+hubmainrad = spoolinnerrad - spoolradslop;
+
 legw = 12;
 plugl = 20;
 plugwmin = 3;
@@ -33,11 +46,18 @@ pindh = 0.50;
 pindwidth = 0.75;
 
 pintaperlen = plugwmax * 0.85;
-pinstraightlen = 10;
+pinstraightlen = 17.5;
 
 spoolouterpad = AxlePin_holerad()*2 * 1.5;
 spoolbarlen = spoolwidth +
-  2*(Washer_thick() + AxlePin_holerad() + spoolinnerslop + spoolouterpad);
+  2*(Washer_thick() + hubbasethick + AxlePin_holerad()
+     + spoolinnerslop + spoolouterpad);
+  barz = axlerad * 0.5;
+axlepin_x = spoolwidth/2 + hubbasethick +
+  Washer_thick() + spoolinnerslop + AxlePin_holerad()*0.5;
+
+trestleheight = spoolouterrad + spoolradclear - barz;
+trestlebase = trestleheight * 1.2;
 
 module Plug(d=0){
   dw = d;
@@ -58,7 +78,6 @@ module Plug(d=0){
 
 module Bar(){ ////toplevel
   spoolw = spoolbarlen;
-  barz = barrad * 0.5;
   biggestw = spoolw + 50;
 
   intersection(){
@@ -75,25 +94,23 @@ module Bar(){ ////toplevel
 	cube([biggestw, 100, 100]);
       for (mir=[0,1]) {
 	mirror([mir,0,0])
-	  translate([spoolwidth/2 + Washer_thick() + spoolinnerslop +
-		     AxlePin_holerad()*0.5,
-		     0, -50])
+	  translate([axlepin_x, 0, -50])
 	  cylinder(r=AxlePin_holerad(), 100, $fn=15);
       }
     }
     translate([0,0,barz]) {
       translate([-100,0,0])
-	rotate([0,90,0]) cylinder(r=barrad, h=200, $fn=30);
+	rotate([0,90,0]) cylinder(r=axlerad, h=200, $fn=30);
     }
   }
 }
 
 module FtAxlePin(){ ////toplevel
-  AxlePin(barrad, (barrad + barwasherrad*2)/3 * 2);
+  AxlePin(axlerad, (axlerad + barwasherrad*2)/3 * 2);
 }
 
 module AxleWasher(){ ////toplevel
-  Washer(barrad, barwasherrad);
+  Washer(axlerad, barwasherrad);
 }
 
 module Trestle(){ ////toplevel
@@ -135,15 +152,18 @@ module Trestle(){ ////toplevel
 
     for (rot=[0,180]) {
       translate([0,0,plugl/2]) rotate([0,rot,0]) translate([0,0,-plugl/2]) {
-	translate([-(topblockw*0.25+1),
+	translate([0,
  	           plugh + pindh - (pinmaxh - pinminh)*0.75,
 		   (plugl - pinholebasew*2)/3]) {
-	  translate([0,0,pinholebasew/2]) rotate([-90,0,0]) %Pin();
-	  rotate([0,90,0]) {
-	    linear_extrude(height = topblockw*1.0+2) {
-	      polygon([[-1.0 * pinholebasew, -0.01],
-		       [-0.5 * pinholebasew, pinholeh],
-		       [ 0                 , -0.01]]);
+	  translate([-(topblockw*0.25+1), 0, pinholebasew/2])
+	    rotate([-90,0,0]) %Pin();
+	  translate([-(topblockw+1), 0, 0]) {
+	    rotate([0,90,0]) {
+	      linear_extrude(height = topblockw*2.0+2) {
+		polygon([[-1.0 * pinholebasew, -0.01],
+			 [-0.5 * pinholebasew, pinholeh],
+			 [ 0                 , -0.01]]);
+	      }
 	    }
 	  }
 	}
@@ -174,20 +194,82 @@ module Pin(){ ////toplevel
   }
 }
 
+module HubEnd(){ ////toplevel
+  thick = hubmainthick+hubbasethick;
+  difference(){
+    union(){
+      for (ang=[0 : 60 : 359]) {
+	rotate([0,0,ang]) {
+	  translate([hubmainrad - hubwalls/2, -hubbasestalkwidth/2, 0])
+	    cube([hubbaserad - (hubmainrad - hubwalls/2),
+		  hubbasestalkwidth, hubbasethick]);
+	  ExtenderPillar(length = hubmainrad-hubwalls/2,
+			 height = hubbasethick + hubmainthick,
+			 pillarw = hubpillarw);
+	}
+      }
+      cylinder(r=axlerad+hubwalls, h=thick);
+      cylinder(r=hubmainrad-0.1, h=hubbaseweb);
+      difference(){
+	cylinder(r=hubmainrad, h=thick, $fn=100);
+	translate([0,0,-1])
+	  cylinder(r=hubmainrad-hubwalls, h=thick+2);
+      }
+      difference(){
+	cylinder(r=hubbaserad, h=hubbasethick, $fn=50);
+	translate([0,0,-1])
+	  cylinder(r=hubbaserad-hubwalls, h=hubbasethick+2);
+      }
+    }
+    translate([0,0,-1])
+      cylinder(r=axlerad+axleslop, h=thick+2, $fn=50);
+  }
+}
+
+
 module TestKit(){ ////toplevel
-  translate([30,0,0]) Pin();
-  translate([30,30,0]) Pin();
+  translate([60,0,0]) mirror([1,0,0]) Pin();
+  translate([60,15,0]) mirror([1,0,0]) Pin();
   translate([0,40,0]) intersection(){
     Trestle();
     translate([-50,-10,-1]) cube([100,100,100]);
   }
   intersection(){
-    translate([-60,0,0]) Bar();
+    translate([-60,10,0]) Bar();
     cube(50,center=true);
   }
+  translate([50,40, AxlePin_zoffset()]) FtAxlePin();
+  translate([0,-20,0]) AxleWasher();
+}
+
+module DemoSpool(){
+  rotate([0,90,0]) translate([0,0,-spoolwidth/2])
+    difference(){
+      cylinder(r=spoolouterrad, h=spoolwidth);
+      translate([0,0,-1]) cylinder(r=spoolinnerrad, h=spoolwidth+2);
+    }
+}
+
+module Demo(){
+  color("blue") Bar();
+  for (mir=[0,1]) {
+    mirror([mir,0,0]) {
+      color("red") translate([spoolbarlen/2,0,0])
+	rotate([90,0,90]) Trestle();
+      color("orange")
+	translate([spoolwidth/2 + hubbasethick + spoolinnerslop*2/3, 0, barz])
+	rotate([0,90,0]) AxleWasher();
+      color("orange") translate([axlepin_x, 0, barz])
+	rotate([90,0,90]) FtAxlePin();
+      color("cyan")
+	translate([spoolwidth/2 + hubbasethick + spoolinnerslop*1/3, 0, barz])
+	rotate([0,-90,0]) HubEnd();
+    }
+  }
+  %translate([0,0,barz]) DemoSpool();
 }
 
-Bar();
+//Bar();
 //FtAxlePin();
 //AxleWasher();
 //Trestle();
@@ -195,3 +277,5 @@ Bar();
 //TestKit();
 //Plug(d=1);
 //ExtenderPillars(80,12,8, baseweb=true);
+//HubEnd();
+//Demo();