X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=filamentspool.scad;h=e44b550011710e9d1dee12e8d4828867bd934bae;hp=f34c4207eefde06200438c1892a27981733fa13f;hb=1cf13680665629e8fa0acba6e078e2a6157533a3;hpb=c60cd6b4b1b240dcb6dc659fbf316f97f93124f8
diff --git a/filamentspool.scad b/filamentspool.scad
index f34c420..e44b550 100644
--- a/filamentspool.scad
+++ b/filamentspool.scad
@@ -1,36 +1,141 @@
// -*- C -*-
-fdia=1.75;
+// filamentspool.scad
+// 3D design for filament spools to hold coils as supplied by Faberdashery
+//
+
+//
+// Copyright 2012,2013,2016 Ian Jackson
+//
+// This work is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This work is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this work. If not, see
+//
+
+//
+// Each spool is a hub with 3 or 4 arms. Each arm has a cup for
+// holding the filament. The effective diameter can be adjusted by
+// setting the cup into a different seat in the arm. The cups are
+// held on with simple clips, so the filement coil can easily be
+// removed and replaced.
+//
+// This file (and its includes) can generate:
+//
+// - Heavy duty 4-armed spool suitable for holding a 100m
+// Faberdashery coil on the spool arm of a Lulzbot TAZ-5.
+//
+// Set
+// fdia=2.85
+// lightduty=false
+// And print following parts
+// Hub
+// ArmEnd x 4
+// FilamentCup x 4 (or FilamentCupPair x 2)
+// CupSecuringClip x 4
+//
+// You will also need 4 x M4 machine screws and nuts.
+//
+// - Light duty 3-armed spool suitable for up to around 30m
+// of Faberdashery 2.85mm PLA.
+//
+// Set
+// fdia=2.85
+// lightduty=true
+// And print following parts
+// Hub
+// ArmEnd x 3
+// FilamentCup x 3 (or FilamentCup + FilamentCupPair)
+// CupSecuringClip x 3
+// TowerDoveClipPin x 6
+//
+// When assembling, insert one TowerDoveClipPin from each side,
+// joining each ArmEnd to the Hub with two TowerDoveClipPins.
+// Modest force with pliers is good to seat them properly.
+//
+// (note that the light duty and heavy duty CupSecuringClips
+// are slightly different)
+//
+// When mounting either spool on the TAZ-5 spool arm, put the `pointy'
+// end of the hub towards the printer - ie, put put the spool on
+// `backwards'. This ensures that the spool's arms will clear the
+// printer framework.
+//
+// For the above, I generally used the Cura `Standard' PLA profile.
+//
+// - Storage arm suitable for screwing to walls, bookshelves,
+// etc. (requires non-countersunk M4 screws); will hold two
+// heavy duty spools each with a 100m coil.
+//
+// Set
+// fdia=2.85
+// lightduty=false
+// And print one of these, according to taste
+// StorageArmLeft
+// StorageArmRight
+//
+// NB that the `light duty' version of this is shorter and
+// will only take two `light duty' spools.
+//
+// For the above, I used the Cura `High detail' PLA profile because
+// I wanted it pretty, but the `Standard' profile should do fine.
+//
+// - Spool (in many parts) for handing 1.75mm filament, printable
+// on, and with parts for mounting on, a Reprappro Huxley.
+
+
+fdia=2.85; // or 1.75
+lightduty=false; // or true
+
slop=0.5;
bigslop=slop*2;
+function selsz(sm,lt,lg) = fdia < 2 ? sm : lightduty ? lt : lg;
+function usedove() = selsz(true,true,false);
+
+num_arms = selsz(3,3,4);
+
+channelslop=selsz(slop,0.75,slop);
+
exteffrad = 70;
-hubeffrad = 30;
-hubbigrad = 20;
-hublwidth = 3;
+hubeffrad = selsz(30, 82, 40);
+hubbigrad = selsz(20, 38, 38);
+hublwidth = selsz(3, 2.5, 4);
hubstemwidth = 2;
hublthick = 10;
-hubaxlelen = 25;
-hubaxlerad = 5;
+hubaxlerad = selsz(5, 28/2, 28/2);
totalheightfromtower = 240;
axletowerfudgebend = 0;
axleaxlefudgebend = 3;
axlepadlen = 1.0;
-prongthick=5;
-prongwidth=5;
+armend_length = 120;
+
+prongthick=selsz(5,4,5);
+prongwidth=selsz(5,4,5);
+prongribwidth=3;
+prongribheight=selsz(0,0,4);
ratchetstep=15;
ratchettooth=3;
ratchettoothheight=5;
ratchettoothsmoothr=1;
ratchettoothslope=0.75;
overlap=0.5;
-cupbigrad=20;
+cupwidth=selsz(40,25,50);
+cupheight=selsz(55,25,55);
-xstraightmul = 1.75;
+cupstrong_dx=selsz(0,0,-10);
-propxshift = 0;
+propxshift = -6;
doveclipheight = 10;
@@ -39,22 +144,25 @@ teethgapx=4+fdia;
prongstalkxwidth=3;
-stalklength=35;
+stalklength=selsz(35,25,55);
overclipcupgap=5;
overclipdepth=15;
overcliproundr=2.0;
-overclipthick=0.5;
-overclipcupnextgap=20;
+overclipthick=1.0;
+overclipcupnextgap=selsz(20,15,20);
+
+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;
@@ -74,22 +182,44 @@ frictionwasherextrapush = 1.0;
ratchetpawl=ratchetstep-ratchettooth-bigslop*2;
+nondove_armhole_x = 32;
+nondove_armhole_hole = 4 + 0.8;
+nondove_armhole_support = 7;
+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
include
include
include
-channelwidth = prongthick + slop;
+channelwidth = prongthick + channelslop;
channeldepth = prongwidth + ratchettoothheight;
totalwidth = armendwallthick*2 + channelwidth;
totalheight = channeldepth + armendbasethick;
stalkwidth = prongwidth + prongstalkxwidth;
-xstraight = cupbigrad * xstraightmul;
-module ArmEnd(length=120){ ////toplevel
- translate([ratchettoothsmoothr, channelwidth/2, -armendbasethick]) {
- rotate([0,0,-90])
- DoveClipPairBase(h=doveclipheight);
+module ArmEnd(length=armend_length){ ////toplevel
+ if (usedove()) {
+ translate([ratchettoothsmoothr, channelwidth/2, -armendbasethick]) {
+ rotate([0,0,-90])
+ DoveClipPairBase(h=doveclipheight);
+ }
+ } else {
+ difference(){
+ translate([1, -armendwallthick, -armendbasethick])
+ mirror([1,0,0])
+ cube([nondove_armbase+1, totalwidth, totalheight]);
+ translate([-nondove_armbase + nondove_armhole_x,
+ -armendwallthick + totalwidth/2,
+ -armendbasethick -1])
+ cylinder(r= nondove_armhole_hole/2, h=totalheight+2, $fn=10);
+ }
}
difference(){
@@ -136,44 +266,65 @@ module FilamentCupHandle(){
}
module FilamentCupCup(){
- linear_extrude(height=prongthick) {
- FlatArc(0,0, cupbigrad,cupbigrad+prongwidth, 89,271, $fn=80);
- }
for (my=[0,1]) mirror([0,my,0]) {
- translate([0,cupbigrad,0])
- cube([xstraight, prongwidth, prongthick]);
+ translate([0, cupwidth/2, 0])
+ cube([cupheight + prongwidth, prongwidth, prongthick]);
}
}
module FilamentCup() { ////toplevel
FilamentCupHandle();
- dx = cupbigrad + prongwidth;
gapy = prongwidth;
- dy = cupbigrad + gapy + overclipcupgap;
+ dy = cupwidth/2 + gapy + overclipcupgap;
+ baselen = dy+cupwidth/2;
- translate([dx, dy, 0])
+ translate([0, dy, 0])
FilamentCupCup();
- translate([0, -1, 0]);
- cube([prongwidth, dy+1, prongthick]);
+ cube([prongwidth, baselen+1, prongthick]);
+
+ translate([cupstrong_dx, prongwidth, 0]) {
+ cube([prongwidth, baselen-prongwidth, prongthick]);
+ for (y = [0, .33, .67, 1])
+ translate([0, (baselen - prongwidth) * y, 0])
+ cube([-cupstrong_dx + 1, prongwidth, prongthick]);
+ }
+ if (cupstrong_dx != 0) {
+ rotate([0,0,45])
+ translate([-prongwidth*.55, -prongwidth*2.1, 0])
+ cube([prongwidth*(2.65), prongwidth*4.2, prongthick]);
+ }
- midrad = cupbigrad + prongwidth/2;
+ 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;
proptaken = propshift;
- echo(cupbigrad, dx, midrad, propshift, proptaken);
+ echo(midrad, propshift, proptaken);
translate([propshift, -1, 0]) {
// something is wrong with the y calculation
cube([prongwidth,
- dy - sqrt(midrad*midrad - proptaken*proptaken) - prongwidth/2,
+ gapy+2,
prongthick]);
}
for (y = [overclipcupgap, overclipcupgap+overclipcupnextgap]) {
- translate([0, y, 0])
+ translate([cupstrong_dx, y + prongwidth, 0])
rotate([0,0, 102 + fdia])
FilamentTeeth(fdia=fdia, h=teethh);
}
+ for (x = [-0.3, -1.3]) {
+ translate([cupheight + overclipcupnextgap*x, baselen + prongwidth, 0])
+ rotate([0,0, 12 + fdia])
+ FilamentTeeth(fdia=fdia, h=teethh);
+ }
}
module CupSecuringClipSolid(w,d,h1,h2){
@@ -200,6 +351,8 @@ module CupSecuringClip(){ ////toplevel
CupSecuringClipSolidSmooth(xrad=overclipthick, xdepth=0);
translate([-wingswidth/2, -wingsize/2, 0])
cube([wingswidth, wingsize, wingthick]);
+ translate([-wingsize/2, -wingswidth/2, 0])
+ cube([wingsize, wingswidth, wingthick]);
}
translate([0,0,-0.1])
CupSecuringClipSolidSmooth(xrad=0, xdepth=0.2);
@@ -215,40 +368,64 @@ module TowerDoveClipPin(){ ////toplevel
}
module Hub(){ ////toplevel
- difference(){
- cylinder($fn=60, h=hublthick, r=hubbigrad);
- translate([0,0,-1])
- cylinder($fn=30, h=hublthick+2, r=(hubbigrad-hublwidth));
- }
axlerad = hubaxlerad + slop;
- difference(){
- cylinder(h=hubaxlelen, r=axlerad+hublwidth);
- translate([0,0,-1]) cylinder($fn=60, h=hubaxlelen+2, r=axlerad);
- }
+ xmin = axlerad+hublwidth/2;
+ xmax = hubbigrad-hublwidth/2;
hole = hubeffrad - hubbigrad - DoveClip_depth() - hublwidth*2;
holewidth = DoveClipPairSane_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]);
- }
+ nondove_allwidth = nondove_armhole_wall*2 + totalwidth;
+ difference(){
+ union(){
+ difference(){
+ cylinder($fn=60, h=hublthick, r=hubbigrad);
+ translate([0,0,-1])
+ cylinder($fn=30, h=hublthick+2, r=(hubbigrad-hublwidth));
}
+ cylinder(h=hubaxlelen, r=axlerad+hublwidth);
+ for (ang=[0 : 360/num_arms : 359])
+ rotate([0,0,ang]) {
+ if (usedove()){
+ 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]);
+ }
+ }
+ } 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, $fn=10);
+ }
+ }
+ }
+ for (ang = [0 : 180/num_arms : 359])
+ rotate([0,0,ang]) rotate([90,0,0]) {
+ translate([0,0,-hublwidth/2])
+ linear_extrude(height=hublwidth)
+ polygon([[xmin,0.05], [xmax,0.05],
+ [xmax,hublthick-0.2], [xmin, hubaxlelen-0.2]]);
+ }
}
- xmin = axlerad+hublwidth/2;
- xmax = hubbigrad-hublwidth/2;
- for (ang = [0 : 60 : 359])
- rotate([0,0,ang]) rotate([90,0,0]) {
- translate([0,0,-hublwidth/2])
- linear_extrude(height=hublwidth)
- polygon([[xmin,0.05], [xmax,0.05],
- [xmax,hublthick-0.2], [xmin, hubaxlelen-0.2]]);
- }
+ translate([0,0,-1]) cylinder($fn=60, h=hubaxlelen+2, r=axlerad);
+ }
}
module ArmExtender(){ ////toplevel
@@ -359,8 +536,192 @@ module TowerExtender(){ ////toplevel
pillarw = towerpillarw);
}
+module FilamentCupPair(){ ////toplevel
+ FilamentCup();
+ translate([cupheight + prongthick*3,
+ cupwidth/2*1.7,
+ 0])
+ rotate([0,0,180]) FilamentCup();
+}
+
+//----- storarm -----
+
+storarm_hooklen = 8;
+storarm_hookheight = 5;
+storarm_thick = 10;
+storarm_axleslop = 4;
+
+storarm_base_w = 30;
+storarm_base_h = 100;
+storarm_base_d = 15;
+storarm_base_mind = 2;
+
+storarm_cope_hubaxle_mk1 = true;
+
+storarm_screw_hole = 4;
+storarm_screw_hole_slop = 0.5;
+storarm_besides_hole = 4;
+
+storarm_under_hole = 5;
+storarm_screw_hole_head = 8.8;
+storarm_screw_hole_head_slop = 1.5;
+
+// calculated
+
+storarm_axlerad = hubaxlerad - storarm_axleslop;
+storarm_mainlen = hubaxlelen*2 + storarm_axleslop
+ + (storarm_cope_hubaxle_mk1 ? 10 : 0);
+storarm_totlen = storarm_mainlen + storarm_hooklen;
+
+storarm_mid_off_y = storarm_axlerad;
+
+storarm_base_off_y = storarm_mid_off_y + storarm_base_h/2;
+
+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 StorageArmBaseTemplate(){
+ square([storarm_base_w, storarm_base_h]);
+}
+
+module StorageArmAtMountingHoles(){
+ bes = storarm_besides_hole + storarm_screw_hole;
+
+ x0 = bes;
+ x1 = storarm_base_w-bes;
+ y1 = storarm_base_h - bes;
+ y0 = bes;
+
+ for (pos=[ [x0, y1],
+ [x1, y1],
+ [x1, y0] ]) {
+ rotate([0,90,0])
+ translate([pos[0] - storarm_base_w,
+ pos[1] - storarm_base_off_y, -storarm_base_d])
+ children();
+ }
+}
+
+module StorageArmRight(){ ////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);
+
+ difference(){
+ union(){
+ hull(){
+ translate([-storarm_base_d, -storarm_base_off_y, storarm_base_w])
+ rotate([0,90,0])
+ linear_extrude(height=storarm_base_mind)
+ StorageArmBaseTemplate();
+ StorageArmDiagPart(-1, 0, shear, 0);
+ }
+ StorageArmAtMountingHoles(){
+ cylinder(r= storarm_screw_hole_head/2,
+ h=10);
+ }
+ }
+ StorageArmAtMountingHoles(){
+ translate([0,0,-1])
+ cylinder(r= (storarm_screw_hole + storarm_screw_hole_slop)/2 ,
+ h=20);
+ translate([0,0,storarm_under_hole])
+ cylinder(r= (storarm_screw_hole_head + storarm_screw_hole_head_slop)/2,
+ h=20);
+ }
+ }
+}
+
+module StorageArmLeft(){ ////toplevel
+ mirror([1,0,0]) StorageArmRight();
+}
+
+module StorArmHoleTest(){ ////toplevel
+ sz = storarm_screw_hole_head + storarm_besides_hole*2;
+ intersection(){
+ StorageArmRight();
+ translate([-50, -storarm_base_off_y, -1])
+ cube([100, sz, sz+1]);
+ }
+}
+
+
+//----- filament guide clip spacer clip -----
+
+guideclip_armdia = 15.0 + 0.5;
+guideclip_armwidth = 10.2 + 0.5;
+guideclip_armspacelen = 15.3 - 0.25;
+
+guideclip_prongprotrude = 4;
+guideclip_thick = 1.6;
+
+module FilamentGuideClipArmTemplate(extra=0){
+ intersection(){
+ circle(r= (guideclip_armdia/2) + extra);
+ square(center=true, [guideclip_armwidth+extra*2,
+ guideclip_armdia + extra*2 + 10]);
+ }
+}
+
+module FilamentGuideClipSpacerClipInnerTemplate(){
+ FilamentGuideClipArmTemplate();
+ translate([0, -guideclip_armdia/2])
+ square(center=true, [guideclip_armwidth - guideclip_prongprotrude,
+ guideclip_armdia]);
+}
+
+module FilamentGuideClipSpacerClip(){ ////toplevel
+ difference(){
+ union(){
+ linear_extrude(height= guideclip_armspacelen)
+ FilamentGuideClipArmTemplate(extra= guideclip_thick);
+ }
+ translate([0,0,-1])
+ linear_extrude(height= guideclip_armspacelen+2)
+ FilamentGuideClipSpacerClipInnerTemplate();
+ }
+}
+
+
+module Demo(){
+ translate([-hubeffrad-30,50,0]) Hub();
+ ArmEnd();
+ translate([0,50,0]) FilamentCup();
+}
+
//ArmEnd();
//FilamentCup();
+//FilamentCupPair();
//CupSecuringClip();
//Hub();
//ArmExtender();
@@ -368,3 +729,6 @@ module TowerExtender(){ ////toplevel
//AxleWasher();
//AxlePin();
//AxleFrictionWasher();
+//StorageArmLeft();
+//StorArmHoleTest();
+//Demo();