X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=filamentspool.scad;h=06115c71b5d17fdea5f1bdfdbc58ef12a674e897;hp=94a01504072b756b6edfe5a78ed7664914e82b42;hb=6c2f54d6bb2de555be96fa28ed88fb1829e32475;hpb=9ffb15b0eaf47f02691e9166c08f453f3cefea10

diff --git a/filamentspool.scad b/filamentspool.scad
index 94a0150..06115c7 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;
@@ -10,11 +21,31 @@ ratchettoothheight=5;
 ratchettoothsmoothr=1;
 ratchettoothslope=0.75;
 overlap=0.5;
-cupbigrad=35;
+cupbigrad=20;
+
+xstraightmul = 1.75;
+
+propxshift = 0;
+
+doveclipheight = 10;
 
-stalklength=40;
+teethh=3;
+teethgapx=4+fdia;
+
+prongstalkxwidth=3;
+
+stalklength=35;
 overclipcupgap=5;
-overclipheight=15;
+overclipdepth=15;
+overcliproundr=2.0;
+overclipthick=0.5;
+
+overclipsmaller=-2.5;
+overclipbigger=0.0;
+
+wingspoke=3;
+wingsize=6;
+wingthick=3;
 
 armendwallthick=2.5;
 armendbasethick=1.2;
@@ -23,13 +54,13 @@ ratchetpawl=ratchetstep-ratchettooth-bigslop*2;
 
 include <doveclip.scad>
 include <cliphook.scad>
+include <filamentteeth.scad>
 
 channelwidth = prongthick + slop;
 channeldepth = prongwidth + ratchettoothheight;
 totalwidth = armendwallthick*2 + channelwidth;
 totalheight = channeldepth + armendbasethick;
-
-doveclipheight = totalheight;
+stalkwidth = prongwidth + prongstalkxwidth;
 
 module ArmEnd(length=120){
   translate([ratchettoothsmoothr, channelwidth/2, -armendbasethick]) {
@@ -41,9 +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);
@@ -52,7 +85,7 @@ module ArmEnd(length=120){
 			[	0,	0,	1,	0	],
 			[	0,	0,	0,	1	]])
 	cube([ratchettooth - ratchettoothsmoothr*2,
-	      channelwidth, ratchettoothheight]);
+	      channelwidth, ratchettoothheight - ratchettoothsmoothr]);
     }
   }
 }
@@ -60,10 +93,10 @@ module ArmEnd(length=120){
 module FilamentCupHandle(){
   pawlusewidth = ratchetpawl-ratchettoothsmoothr*2;
   mirror([0,1,0]) {
-    cube([stalklength, prongwidth, prongthick]);
-    translate([stalklength, prongwidth/2, 0])
-      cylinder(r=prongwidth/2, h=prongthick, $fn=20);
-    translate([ratchettoothsmoothr, prongwidth, 0]) {
+    cube([stalklength, stalkwidth, prongthick]);
+    translate([stalklength, stalkwidth/2, 0])
+      cylinder(r=stalkwidth/2, h=prongthick, $fn=20);
+    translate([ratchettoothsmoothr, stalkwidth, 0]) {
       minkowski(){
 	cylinder($fn=20,r=ratchettoothsmoothr, h=1);
 	multmatrix([	[	1, -ratchettoothslope, 0, 0	],
@@ -72,14 +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);
   }
@@ -93,23 +126,104 @@ module FilamentCup() {
   FilamentCupHandle();
 
   dx = cupbigrad + prongwidth;
-  dy = cupbigrad + prongwidth + overclipcupgap;
+  gapy = prongwidth;
+  dy = cupbigrad + gapy + overclipcupgap;
 
   translate([dx, dy, 0])
     FilamentCupCup();
   translate([0, -1, 0]);
   cube([prongwidth, dy+1, prongthick]);
 
-  propshift = stalklength - overclipheight - prongthick;
-  proptaken = propshift + prongthick;
-  echo(cupbigrad, dx, propshift, proptaken);
+  midrad = cupbigrad + prongwidth/2;
+
+  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,
-	  sqrt(cupbigrad*cupbigrad - proptaken*proptaken)
-	  + overclipcupgap + prongthick + 1,
+	  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){
+  rotate([0,-90,0]) translate([0,-h1/2,-w/2]) linear_extrude(height=w) {
+    polygon(points=[[0,0], [d,0], [d,h2], [0,h1]]);
+  }
+}
+
+module CupSecuringClipSolidSmooth(xrad=0, xdepth=0){
+  hbase = totalheight + prongstalkxwidth - overcliproundr*2;
+  minkowski(){
+    CupSecuringClipSolid(w=totalwidth,
+			 d=overclipdepth + xdepth,
+			 h1=hbase - overclipsmaller,
+			 h2=hbase + overclipbigger);
+    cylinder($fn=20, h=0.01, r=overcliproundr+xrad);
+  }
+}
+
+module CupSecuringClip(){
+  wingswidth = wingspoke*2 + overclipthick*2 + overcliproundr*2 + totalwidth;
+  difference(){
+    union(){
+      CupSecuringClipSolidSmooth(xrad=overclipthick, xdepth=0);
+      translate([-wingswidth/2, -wingsize/2, 0])
+	cube([wingswidth, wingsize, wingthick]);
+    }
+    translate([0,0,-0.1])
+      CupSecuringClipSolidSmooth(xrad=0, xdepth=0.2);
+  }
+}
+
+module ArmDoveClipPin(){
+  DoveClipPin(h=doveclipheight);
+}
+
+module Hub(){
+  difference(){
+    cylinder($fn=60, h=hublthick, r=hubbigrad);
+    translate([0,0,-1])
+      cylinder($fn=30, h=hublthick+2, r=(hubbigrad-hublwidth));
+  }
+  axlerad = hubaxlerad + bigslop;
+  difference(){
+    cylinder(h=hubaxlelen, r=axlerad+hublwidth);
+    translate([0,0,-1]) cylinder($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();
+//FilamentCup();
+//CupSecuringClip();
+
+Hub();