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=cbef1a0af80b3a1bf9fa2ad9dd0fc490d4b4cdf9;hb=1cf13680665629e8fa0acba6e078e2a6157533a3;hpb=9300efdd28e6235630c8971c32ece6ff2ca4fe4f
diff --git a/filamentspool.scad b/filamentspool.scad
index cbef1a0..e44b550 100644
--- a/filamentspool.scad
+++ b/filamentspool.scad
@@ -1,7 +1,100 @@
// -*- C -*-
-fdia=2.85;
-lightduty=true;
+// 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;
@@ -11,6 +104,8 @@ function usedove() = selsz(true,true,false);
num_arms = selsz(3,3,4);
+channelslop=selsz(slop,0.75,slop);
+
exteffrad = 70;
hubeffrad = selsz(30, 82, 40);
hubbigrad = selsz(20, 38, 38);
@@ -56,7 +151,7 @@ overcliproundr=2.0;
overclipthick=1.0;
overclipcupnextgap=selsz(20,15,20);
-hubaxlelen = selsz(25, 62.5, 87.5);
+hubaxlelen = selsz(25, 62.5, 77.5);
echo(hubaxlelen);
overclipsmaller=-2.5;
@@ -103,7 +198,7 @@ include
include
include
-channelwidth = prongthick + slop;
+channelwidth = prongthick + channelslop;
channeldepth = prongwidth + ratchettoothheight;
totalwidth = armendwallthick*2 + channelwidth;
totalheight = channeldepth + armendbasethick;
@@ -449,6 +544,175 @@ module FilamentCupPair(){ ////toplevel
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();
@@ -465,3 +729,6 @@ module Demo(){
//AxleWasher();
//AxlePin();
//AxleFrictionWasher();
+//StorageArmLeft();
+//StorArmHoleTest();
+//Demo();