X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=filamentspool.scad;h=44a3f31da19088b2ba9bf39c3ecedf2a18313689;hp=fb2f8a9711a2d36b8a1ec445c10b19e449386173;hb=696d92a3055f076414a42331f649d17378aef613;hpb=5e20497e80c7ab5cd3eb7adb7bcf290241ef46f9

diff --git a/filamentspool.scad b/filamentspool.scad
index fb2f8a9..44a3f31 100644
--- a/filamentspool.scad
+++ b/filamentspool.scad
@@ -1,43 +1,48 @@
 // -*- C -*-
 
 fdia=2.85;
+lightduty=false;
 
 slop=0.5;
 bigslop=slop*2;
 
-function selsz(sm,lg) = fdia < 2 ? sm : lg;
-function usedove() = selsz(true,false);
+function selsz(sm,lt,lg) = fdia < 2 ? sm : lightduty ? lt : lg;
+function usedove() = selsz(true,true,false);
 
-num_arms = selsz(3,4);
+num_arms = selsz(3,3,4);
+
+channelslop=selsz(slop,0.75,slop);
 
 exteffrad = 70;
-hubeffrad = selsz(30, 50);
-hubbigrad = selsz(20, 45);
-hublwidth = selsz(3, 5);
+hubeffrad = selsz(30, 82, 40);
+hubbigrad = selsz(20, 38, 38);
+hublwidth = selsz(3, 2.5, 4);
 hubstemwidth = 2;
 hublthick = 10;
-hubaxlerad = selsz(5, 17/2);
+hubaxlerad = selsz(5, 28/2, 28/2);
 totalheightfromtower = 240;
 axletowerfudgebend = 0;
 axleaxlefudgebend = 3;
 axlepadlen = 1.0;
 
-prongthick=selsz(5,7);
-prongwidth=selsz(5,5);
+armend_length = 120;
+
+prongthick=selsz(5,4,5);
+prongwidth=selsz(5,4,5);
 prongribwidth=3;
-prongribheight=selsz(0,4);
+prongribheight=selsz(0,0,4);
 ratchetstep=15;
 ratchettooth=3;
 ratchettoothheight=5;
 ratchettoothsmoothr=1;
 ratchettoothslope=0.75;
 overlap=0.5;
-cupwidth=selsz(40,60);
-cupheight=selsz(55,75);
+cupwidth=selsz(40,25,50);
+cupheight=selsz(55,25,55);
 
-cupstrong_dx=selsz(0,-10);
+cupstrong_dx=selsz(0,0,-10);
 
-propxshift = 0;
+propxshift = -6;
 
 doveclipheight = 10;
 
@@ -46,24 +51,25 @@ teethgapx=4+fdia;
 
 prongstalkxwidth=3;
 
-stalklength=selsz(35,55);
+stalklength=selsz(35,25,55);
 overclipcupgap=5;
 overclipdepth=15;
 overcliproundr=2.0;
 overclipthick=1.0;
-overclipcupnextgap=20;
+overclipcupnextgap=selsz(20,15,20);
 
-hubaxlelen = selsz(25, cupwidth);
+hubaxlelen = selsz(25, 62.5, 77.5);
+echo(hubaxlelen);
 
 overclipsmaller=-2.5;
 overclipbigger=0.0;
 
-wingspoke=3;
+wingspoke=2.5;
 wingsize=6;
 wingthick=3;
 
-armendwallthick=2.5;
-armendbasethick=1.2;
+armendwallthick=selsz(2.5, 1.8, 2.5);
+armendbasethick=selsz(1.2, 1.2, 1.2);
 
 axlehorizoffset = 12.5;
 axlevertheight = 100;
@@ -83,26 +89,29 @@ frictionwasherextrapush = 1.0;
 
 ratchetpawl=ratchetstep-ratchettooth-bigslop*2;
 
-nondove_armbase = 100;
-nondove_armhole_x = 60;
-nondove_armhole_hole = 4;
+nondove_armhole_x = 32;
+nondove_armhole_hole = 4 + 0.8;
 nondove_armhole_support = 7;
-nondove_armhole_wall = 4;
+nondove_armhole_wall = 3.2;
 nondove_armhole_slop = 0.5;
 nondove_armhole_slop_x = 0.5;
 
+nondove_armbase = nondove_armhole_x + nondove_armhole_hole/2 +
+  nondove_armhole_support;
+echo(nondove_armbase);
+
 include <doveclip.scad>
 include <cliphook.scad>
 include <filamentteeth.scad>
 include <axlepin.scad>
 
-channelwidth = prongthick + slop;
+channelwidth = prongthick + channelslop;
 channeldepth = prongwidth + ratchettoothheight;
 totalwidth = armendwallthick*2 + channelwidth;
 totalheight = channeldepth + armendbasethick;
 stalkwidth = prongwidth + prongstalkxwidth;
 
-module ArmEnd(length=120){ ////toplevel
+module ArmEnd(length=armend_length){ ////toplevel
   if (usedove()) {
     translate([ratchettoothsmoothr, channelwidth/2, -armendbasethick]) {
       rotate([0,0,-90])
@@ -183,8 +192,8 @@ module FilamentCup() { ////toplevel
 
   translate([cupstrong_dx, prongwidth, 0]) {
     cube([prongwidth, baselen-prongwidth, prongthick]);
-    for (y = [0, .4, .7, 1])
-      translate([0, (baselen - prongwidth*2) * y, 0])
+    for (y = [0, .33, .67, 1])
+      translate([0, (baselen - prongwidth) * y, 0])
 	cube([-cupstrong_dx + 1, prongwidth, prongthick]);
   }
   if (cupstrong_dx != 0) {
@@ -196,6 +205,11 @@ module FilamentCup() { ////toplevel
   translate([0, -0.2, 0])
     cube([prongribwidth, baselen, prongthick + prongribheight]);
 
+  if (prongribheight > 0) {
+    translate([-prongwidth, baselen, 0])
+      cube([cupheight/2, prongwidth + prongribheight, prongribwidth]);
+  }
+
   midrad = cupwidth/2 + prongwidth/2;
 
   propshift = stalklength - overclipdepth - prongthick + propxshift;
@@ -277,8 +291,8 @@ module Hub(){ ////toplevel
       cylinder(h=hubaxlelen, r=axlerad+hublwidth);
       for (ang=[0 : 360/num_arms : 359])
 	rotate([0,0,ang]) {
-	  difference() {
-	    if (usedove()){
+	  if (usedove()){
+	    difference() {
 	      translate([hubeffrad,0,0])
 		DoveClipPairSane(h=doveclipheight,
 				 baseextend = (hubeffrad - DoveClip_depth()
@@ -287,25 +301,25 @@ module Hub(){ ////toplevel
 		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);
-	      }
+	    }
+	  } 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);
 	    }
 	  }
 	}
@@ -437,8 +451,67 @@ module FilamentCupPair(){ ////toplevel
     rotate([0,0,180]) FilamentCup();
 }
 
+//----- storarm -----
+
+storarm_hooklen = 8;
+storarm_hookheight = 5;
+storarm_thick = 10;
+storarm_axleslop = 4;
+
+// calculated
+
+storarm_axlerad = hubaxlerad - storarm_axleslop;
+storarm_mainlen = hubaxlelen;
+storarm_totlen = storarm_mainlen + storarm_hooklen;
+
+module StorageArmDiagPartSide(xmin, xmax){
+  xsz = xmax-xmin;
+  yuse = storarm_thick/2;
+
+  intersection(){
+    translate([xmin-1, -storarm_axlerad, storarm_thick/2])
+      rotate([0,90,0])
+      cylinder(r=storarm_axlerad, h=xsz+2, $fn=60);
+    translate([xmin, -yuse, 0])
+      cube([xsz, yuse, storarm_thick]);
+  }
+}
+
+module StorageArmDiagPart(xmin, xmax, shear, adjbot){
+  hull(){
+    StorageArmDiagPartSide(xmin,xmax);
+
+    multmatrix([[1,0,0,0],
+		[shear,1,0,0],
+		[0,0,1,0],
+		[0,0,0,1]])
+      translate([0, -storarm_axlerad*2 + adjbot, 0])
+      mirror([0,1,0])
+      StorageArmDiagPartSide(xmin,xmax);
+  }
+}
+
+module StorageArm(){ ////toplevel
+  shear = storarm_hookheight / (storarm_mainlen/2);
+
+  StorageArmDiagPart(-1, storarm_mainlen/2+1, shear, 0);
+  StorageArmDiagPart(storarm_mainlen/2-1, storarm_mainlen+1, shear/2,
+		     storarm_hookheight/2);
+
+  translate([0, storarm_hookheight, 0])
+    StorageArmDiagPart(storarm_mainlen, storarm_totlen,
+		       shear/2, -storarm_hookheight/2);
+}
+
+
+module Demo(){
+  translate([-hubeffrad-30,50,0]) Hub();
+  ArmEnd();
+  translate([0,50,0]) FilamentCup();
+}
+
 //ArmEnd();
-FilamentCup();
+//FilamentCup();
 //FilamentCupPair();
 //CupSecuringClip();
 //Hub();
@@ -447,3 +520,5 @@ FilamentCup();
 //AxleWasher();
 //AxlePin();
 //AxleFrictionWasher();
+StorageArm();
+//Demo();