96 lines
2.8 KiB
OpenSCAD
96 lines
2.8 KiB
OpenSCAD
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/* Derived by Carlosgs from:
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* http://www.thingiverse.com/thing:12789
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* An extruder gear set for the TechZone Huxley,
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* featuring Herringbone teeth.
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* You will have to recalibrate your E_STEPS_PER_MM in
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* your firmware (ratio changing from original techzone
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* lasercut gears).
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* This use 2 modules from the MCAD library that you can
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* get from https://github.com/elmom/MCAD.
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*
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* Part - the motor gear mount hub with set screw hole -
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* derived from http://www.thingiverse.com/thing:3104
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* (thanks GilesBathgate) which is under GPL CC license.
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*
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* Copyright (C) 2011 Guy 'DeuxVis' P.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* --
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* DeuxVis - device@ymail.com */
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include <MCAD/teardrop.scad>
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include <MCAD/involute_gears.scad>
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M8_nut_diameter = 15.3;
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nut_separation = 3;
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/* Herringbone gear module, adapted from MCAD/involute_gears */
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module herringbone_gear( teeth=12, circles=0, shaft=5 ) {
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twist=200;
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height=10;
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pressure_angle=30;
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gear(
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number_of_teeth=teeth,
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circular_pitch=320,
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pressure_angle=pressure_angle,
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clearance = 0.2,
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gear_thickness = height/2,
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rim_thickness = height/2,
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rim_width = 1,
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hub_thickness = height/2,
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hub_diameter=1,
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bore_diameter=shaft,
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circles=circles,
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twist=twist/teeth
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);
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mirror( [0,0,1] )
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gear(
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number_of_teeth=teeth,
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circular_pitch=320,
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pressure_angle=pressure_angle,
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clearance = 0.2,
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gear_thickness = height/2,
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rim_thickness = height/2,
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rim_width = 1,
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hub_thickness = height/2,
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hub_diameter=1,
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bore_diameter=shaft,
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circles=circles,
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twist=twist/teeth
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);
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}
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// Extruder Gear
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difference() {
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union() {
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//gear
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rotate([180,0,0]) herringbone_gear( teeth=16, circles=0, shaft=8.5, $fn=40 );
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//M8 hobbed bolt head fit washer
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/*difference() {
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translate( [0, 0, 5] ) cylinder( r=8, h=3, $fn=60 );
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translate( [0, 0, 5-0.01] ) cylinder( r=M8_nut_diameter/2, h=7, $fn=6 );
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}*/
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/*rotate([180,0,0]) difference() {
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translate( [0, 0, 5] ) cylinder( r=13, h=3, $fn=60 );
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translate( [0, 0, 5+0.4] ) cylinder( r=M8_nut_diameter/2, h=7, $fn=6 );
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}*/
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}
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translate( [0, 0, (nut_separation/2)] ) cylinder( r=M8_nut_diameter/2, h=7, $fn=6 );
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}
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