X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=filamentspool.scad;h=728ba69d23318f8b9ccb0cb48db5601c87b928bc;hp=96d33cdd06c2417394b1bebdafcb29c49c23ba4f;hb=ec68479632e04d4675682e9bdc1b87d6b720a705;hpb=3189e9477971d62c4766dd2c54de02f53964ca12 diff --git a/filamentspool.scad b/filamentspool.scad index 96d33cd..728ba69 100644 --- a/filamentspool.scad +++ b/filamentspool.scad @@ -30,8 +30,10 @@ // // 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. +// ===== Heavy duty 4-armed spool for 3mm x 100m coil ===== +// +// A 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 @@ -44,8 +46,10 @@ // // 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. +// ===== Light duty 3-armed spool for 3mm x <=30m coil ===== +// +// A light duty 3-armed spool suitable for up to around 30m +// of Faberdashery 2.85mm PLA. // // Set // fdia=2.85 @@ -64,6 +68,8 @@ // (note that the light duty and heavy duty CupSecuringClips // are slightly different) // +// ===== Notes regarding both the above spools ===== +// // 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 @@ -71,9 +77,44 @@ // // 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. +// ===== TAZ-5 feed tube adjustment kit ===== +// +// With a TAZ-5 I recommend using this kit to improve the feed +// reliability: +// +// Set +// fdia=2.85 +// And print following parts +// FilamentGuideSpacer (ideally, at `high detail') +// FilamentGuideArmPrint (optional; `high detail' or `standard') +// +// And possibly also +// t-nut_jig_0.2.stl +// from Aleph Objects - look here: +// http://download.lulzbot.com/TAZ/accessories/tool_heads/version_2/Dual_Extruder_v2/production_parts/stl/ +// +// The spacer clips onto the filament guide tube holder arm, on the +// inside, with the pointy flanged end towards the filament guide +// tube. It stops the filament guide tube angle (and so the +// filament's natural pickup location) changing as the print head moves. +// +// The FilamentGuideArm[Print] is a replacement for the arm supplied +// with your TAZ-5. It's longer, so that the filament pickup point is +// closer to the middle of the coil. Use the t-nut_jig to stop the +// T-nuts in the aluminium channel from annoyingly sliding down to the +// bottom while you swap out the arm. +// +// (Faberdashery coils, and therefore both the above spools, have a +// larger diameter than the flat-walled spools often supplied by other +// vendors. And the spools above have individual arms rather than a +// continuous disc. If the filament `unhooks' from the arm, it can +// pull taught around the hub and stop feeding properly.) +// +// ===== Spool storage arm, for mounting on walls ===== +// +// A 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 @@ -88,8 +129,10 @@ // 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. +// ===== Spools for 1.75mm filament ===== +// +// 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 @@ -680,12 +723,13 @@ module StorArmHoleTest(){ ////toplevel guide_armdia = 15.0; guide_armwidth = 10.2; -guide_armcorelen = 15.3; +guide_armcorelen = 25.0; +guide_clipcirclethick = 10.0; guidefilclip_outerdia = 22.8; guidespacer_armslop = 0.75; -guidespacer_armlenslop = 0.75; +guidespacer_armlenslop = 1.05; guidespacer_prongprotrude = 4; guidespacer_thick = 1.6; @@ -694,7 +738,8 @@ guidespacer_thick = 1.6; guidespacer_armdia = guide_armdia + guidespacer_armslop; guidespacer_armwidth = guide_armwidth + guidespacer_armslop; -guidespacer_len = guide_armcorelen + guidespacer_armlenslop; +guidespacer_len = guide_armcorelen - guide_clipcirclethick + + guidespacer_armlenslop; guidespacer_wingheight = (guidefilclip_outerdia - guidespacer_armdia)/2; @@ -747,7 +792,7 @@ module FilamentGuideSpacer(){ ////toplevel guidearm_armslop = 0.25; guidearm_armlenslop = 0.25; -guidearm_hookprotr = 4; +guidearm_hookprotr = 3; guidearm_hookprotrflat = 1; guidearm_hookslope = 0.3; @@ -755,12 +800,14 @@ guidearm_totallen = 60; guidearm_screwplatesz = 12; guidearm_screwplateth = 4; -guidearm_screwhole = 4 + 0.5; +guidearm_screwplatewd = 15; +guidearm_screwhole = 5 + 0.5; -guidearm_bendlen = 50; -guidearm_bendslot = 5; +guidearm_bendlen = 40; +guidearm_bendslot = 4.5; guidearm_stopthick = 4; +guidearm_protrslop = 1.0; // calculated @@ -772,11 +819,12 @@ guidearm_base_z0 = -(guidearm_totallen - guidearm_armcorelen); guidearm_realbendlen = min(guidearm_bendlen, guidearm_totallen - guidearm_screwplateth - 0.1); +guidearm_slopelen = guidearm_hookprotr/guidearm_hookslope; module FilamentGuideArmStop(h){ for (ts=[-1,+1]) { translate([ts * guidearm_hookprotr, 0,0]) - cylinder(r=guidearm_armdia/2, h); + cylinder(r=guidearm_armdia/2, h, $fn=80); } } @@ -784,12 +832,12 @@ module FilamentGuideArmShaftPositive(){ r = guidearm_armdia/2; translate([0,0, guidearm_base_z0+1]) - cylinder(r=r, h= guidearm_totallen); + cylinder(r=r, h= guidearm_totallen, $fn=80); translate([0,0, guidearm_armcorelen]){ hull(){ FilamentGuideArmStop(guidearm_hookprotrflat); - translate([0,0, guidearm_hookprotr/guidearm_hookslope]) - cylinder(r=r, h=guidearm_hookprotrflat); + translate([0,0, guidearm_slopelen]) + cylinder(r=r, h=guidearm_hookprotrflat, $fn=80); } } mirror([0,0,1]) @@ -797,18 +845,20 @@ module FilamentGuideArmShaftPositive(){ } module FilamentGuideArmBase(){ - translate([0,0, guidearm_base_z0]){ + translate([0, + (guidearm_screwplatewd - guidearm_armwidth)/2, + guidearm_base_z0]){ difference(){ translate([0,0, guidearm_screwplateth/2]) cube(center=true, [guidearm_armdia + guidearm_screwplatesz*2, - guidearm_armwidth, + guidearm_screwplatewd, guidearm_screwplateth]); for (ts=[-1,+1]) { translate([ts * (guidearm_armdia/2 + guidearm_screwplatesz/2), 0, -20]) - cylinder(r= guidearm_screwhole/2, h=40); + cylinder(r= guidearm_screwhole/2, h=40, $fn=20); } } } @@ -824,6 +874,15 @@ module FilamentGuideArm(){ ///toplevel cube([guidearm_bendslot, 100, guidearm_realbendlen + 100]); + hull(){ + for (zx=[ [ 0, guidearm_bendslot ], + [ guidearm_armcorelen + guidearm_slopelen, + guidearm_hookprotr*2 + guidearm_protrslop ] + ]) { + translate([-zx[1]/2, -50, zx[0]]) + cube([zx[1], 100, 1]); + } + } } cube(center=true, [guidearm_armdia*2, @@ -833,6 +892,10 @@ module FilamentGuideArm(){ ///toplevel FilamentGuideArmBase(); } +module FilamentGuideArmPrint(){ ////toplevel + rotate([90,0,0]) + FilamentGuideArm(); +} module Demo(){ translate([-hubeffrad-30,50,0]) Hub(); @@ -854,4 +917,5 @@ module Demo(){ //StorArmHoleTest(); //FilamentGuideSpacer(); //FilamentGuideArm(); +//FilamentGuideArmPrint(); //Demo();