X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=filamentspool.scad;h=c90701f5154a1297e37ddf06b88980dd3729ebd1;hp=65592f501de01f47b5c5b8b1604b9620c961a46b;hb=d5cf035b7812e1b7f90c0efe0d93d076ae620395;hpb=b6b7ab084845af53765a57e24b5e96c284763c6f diff --git a/filamentspool.scad b/filamentspool.scad index 65592f5..c90701f 100644 --- a/filamentspool.scad +++ b/filamentspool.scad @@ -1,7 +1,23 @@ +// -*- C -*- + +fdia=1.75; slop=0.5; bigslop=slop*2; +exteffrad = 70; +hubeffrad = 30; +hubbigrad = 20; +hublwidth = 3; +hubstemwidth = 2; +hublthick = 10; +hubaxlelen = 25; +hubaxlerad = 5; +totalheightfromtower = 240; +axletowerfudgebend = 0; +axleaxlefudgebend = 3; +axlepadlen = 1.0; + prongthick=5; prongwidth=5; ratchetstep=15; @@ -10,40 +26,67 @@ ratchettoothheight=5; ratchettoothsmoothr=1; ratchettoothslope=0.75; overlap=0.5; -cupbigrad=35; +cupbigrad=20; + +xstraightmul = 1.75; + +propxshift = 0; + +doveclipheight = 10; + +teethh=3; +teethgapx=4+fdia; prongstalkxwidth=3; -stalklength=40; +stalklength=35; overclipcupgap=5; overclipdepth=15; overcliproundr=2.0; overclipthick=0.5; +overclipcupnextgap=20; + +overclipsmaller=-2.5; +overclipbigger=0.0; wingspoke=3; wingsize=6; wingthick=3; -overclipsmaller=-1.0; -overclipbigger=2.0; - armendwallthick=2.5; armendbasethick=1.2; +axlehorizoffset = 12.5; +axlevertheight = 100; +towercliph = 16; +towerclipcount = 3; +towerpillarw = 5; + +axlepinrad = 2; +axlepintabrad = 5; + +washerthick = 1.2; +washerthinthick = 0.8; +washerverythinthick = 0.4; +washerrad = hubaxlerad + 7.5; +frictionwasherarmwidth = 3; +frictionwasherextrapush = 1.0; + ratchetpawl=ratchetstep-ratchettooth-bigslop*2; include include +include +include channelwidth = prongthick + slop; channeldepth = prongwidth + ratchettoothheight; totalwidth = armendwallthick*2 + channelwidth; totalheight = channeldepth + armendbasethick; stalkwidth = prongwidth + prongstalkxwidth; +xstraight = cupbigrad * xstraightmul; -doveclipheight = totalheight; - -module ArmEnd(length=120){ +module ArmEnd(length=120){ ////toplevel translate([ratchettoothsmoothr, channelwidth/2, -armendbasethick]) { rotate([0,0,-90]) DoveClipPairBase(h=doveclipheight); @@ -53,9 +96,11 @@ 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); @@ -64,7 +109,7 @@ module ArmEnd(length=120){ [ 0, 0, 1, 0 ], [ 0, 0, 0, 1 ]]) cube([ratchettooth - ratchettoothsmoothr*2, - channelwidth, ratchettoothheight]); + channelwidth, ratchettoothheight - ratchettoothsmoothr]); } } } @@ -84,14 +129,13 @@ module FilamentCupHandle(){ [ 0, 0, 0, 1 ]]) cube([pawlusewidth, ratchettoothheight - ratchettoothsmoothr, - prongthick]); + prongthick - 1]); } } } } module FilamentCupCup(){ - xstraight = cupbigrad; linear_extrude(height=prongthick) { FlatArc(0,0, cupbigrad,cupbigrad+prongwidth, 89,271, $fn=80); } @@ -101,11 +145,12 @@ module FilamentCupCup(){ } } -module FilamentCup() { +module FilamentCup() { ////toplevel FilamentCupHandle(); dx = cupbigrad + prongwidth; - dy = cupbigrad + prongwidth + overclipcupgap; + gapy = prongwidth; + dy = cupbigrad + gapy + overclipcupgap; translate([dx, dy, 0]) FilamentCupCup(); @@ -114,14 +159,21 @@ module FilamentCup() { midrad = cupbigrad + prongwidth/2; - propshift = stalklength - overclipdepth - prongthick; + propshift = stalklength - overclipdepth - prongthick + propxshift; proptaken = propshift; echo(cupbigrad, dx, midrad, propshift, proptaken); - translate([propshift, -1, 0]) + translate([propshift, -1, 0]) { + // something is wrong with the y calculation cube([prongwidth, - dy - sqrt(midrad*midrad - proptaken*proptaken), + dy - sqrt(midrad*midrad - proptaken*proptaken) - prongwidth/2, prongthick]); + } + for (y = [overclipcupgap, overclipcupgap+overclipcupnextgap]) { + translate([0, y, 0]) + rotate([0,0, 102 + fdia]) + FilamentTeeth(fdia=fdia, h=teethh); + } } module CupSecuringClipSolid(w,d,h1,h2){ @@ -141,7 +193,7 @@ module CupSecuringClipSolidSmooth(xrad=0, xdepth=0){ } } -module CupSecuringClip(){ +module CupSecuringClip(){ ////toplevel wingswidth = wingspoke*2 + overclipthick*2 + overcliproundr*2 + totalwidth; difference(){ union(){ @@ -150,10 +202,178 @@ module CupSecuringClip(){ cube([wingswidth, wingsize, wingthick]); } translate([0,0,-0.1]) - CupSecuringClipSolidSmooth(xrad=0, xdepth=5); + CupSecuringClipSolidSmooth(xrad=0, xdepth=0.2); + } +} + +module ArmDoveClipPin(){ ////toplevel + DoveClipPin(h=doveclipheight); +} + +module TowerDoveClipPin(){ ////toplevel + DoveClipPin(h=towercliph/2); +} + +module Hub(){ ////toplevel + difference(){ + cylinder($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); + } + 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]); + } + } + } + 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]]); + } +} + +module ArmExtender(){ ////toplevel + DoveClipExtender(length=exteffrad-hubeffrad, + ha=doveclipheight, + hb=doveclipheight); +} + +module FsAxlePin(){ ////toplevel + AxlePin(hubaxlerad, washerrad*2, axlepinrad, axlepintabrad, slop); +} + +module Axle(){ ////toplevel + pillarswidth = DoveClipPairSane_width(towerclipcount); + + rotate([0,0, -( axleaxlefudgebend + atan(slop/hubaxlelen) ) ]) + translate([-axlehorizoffset, -axlevertheight, 0]) { + rotate([0,0,-axletowerfudgebend]) + rotate([0,0,-90]) + DoveClipPairSane(h=towercliph, count=towerclipcount, baseextend=3); + translate([0, DoveClip_depth(), 0]) + rotate([0,0,90]) + ExtenderPillars(axlevertheight - DoveClip_depth(), + pillarswidth, towercliph, + pillarw=towerpillarw); + } + + axleclearlen = hubaxlelen + slop*4 + washerthick*2 + axlepadlen; + axlerad = hubaxlerad-slop; + bump = axlerad * 0.2; + shift = axlerad-bump; + joinbelowallow = 3; + + intersection(){ + translate([0, 0, shift]) { + difference() { + union(){ + translate([-1, 0, 0]) + rotate([0,90,0]) + cylinder($fn=60, + r = axlerad, + h = 1 + axleclearlen + axlepinrad*2 + 2); + mirror([1,0,0]) rotate([0,90,0]) + cylinder(r = axlerad*1.75, h = 3); + intersection(){ + mirror([1,0,0]) + translate([axlehorizoffset - pillarswidth/2, 0, 0]) + rotate([0,90,0]) + cylinder($fn=60, + r = towercliph - shift, + h = pillarswidth); + translate([-50, -joinbelowallow, -50]) + cube([100, joinbelowallow+50, 100]); + } + } + rotate([90,0,0]) + translate([axleclearlen + axlepinrad/2, 0, -25]) + cylinder(r = axlepinrad + slop, h=50); + } + } + translate([-50,-50,0]) cube([100,100,100]); + } +} + +module washer(thick){ + Washer(hubaxlerad, washerrad, thick, slop); +} + +module AxleWasher(){ ////toplevel + washer(thick=washerthick); +} + +module AxleThinWasher(){ ////toplevel + washer(thick=washerthinthick); +} + +module AxleVeryThinWasher(){ ////toplevel + washer(thick=washerverythinthick); +} + +module AxleFrictionWasher(){ ////toplevel + difference(){ + cylinder(h=washerthick, r=washerrad); + translate([0,0,-1]) cylinder(h=washerthick+2, r=hubaxlerad+slop); + } + frarmr = hubbigrad; + frarmw = frictionwasherarmwidth; + frarmpawlr = hublwidth; + frarmpawlpush = slop*4 + frictionwasherextrapush; + for (ang=[0,180]) rotate([0,0,ang]) { + translate([washerrad-1, -frarmw/2, 0]) + cube([frarmr - washerrad + 1, frarmw, washerthick]); + intersection(){ + translate([frarmr - frarmpawlr, -50, 0]) + cube([frarmpawlr, 100, 50]); + rotate([0,90,0]) + cylinder(h = 50, r = frarmpawlpush, $fn=36); + } + } +} + +module TowerExtender(){ ////toplevel + l = totalheightfromtower - axlevertheight; + echo("TowerExtender",l); + DoveClipExtender(length = l, + ha = towercliph, hb = towercliph, + counta = towerclipcount, countb = towerclipcount, + pillarw = towerpillarw); +} + +module FilamentCupPair(){ ////toplevel + FilamentCup(); + translate([xstraight + cupbigrad + prongthick*3, + cupbigrad*1.7, + 0]) + rotate([0,0,180]) FilamentCup(); } //ArmEnd(); //FilamentCup(); -CupSecuringClip(); +//FilamentCupPair(); +//CupSecuringClip(); +//Hub(); +//ArmExtender(); +//Axle(); +//AxleWasher(); +//AxlePin(); +//AxleFrictionWasher();