111 lines
3.1 KiB
OpenSCAD
111 lines
3.1 KiB
OpenSCAD
/* Derived by Carlosgs from:
|
|
* http://www.thingiverse.com/thing:12789
|
|
* An extruder gear set for the TechZone Huxley,
|
|
* featuring Herringbone teeth.
|
|
* You will have to recalibrate your E_STEPS_PER_MM in
|
|
* your firmware (ratio changing from original techzone
|
|
* lasercut gears).
|
|
* This use 2 modules from the MCAD library that you can
|
|
* get from https://github.com/elmom/MCAD.
|
|
*
|
|
* Part - the motor gear mount hub with set screw hole -
|
|
* derived from http://www.thingiverse.com/thing:3104
|
|
* (thanks GilesBathgate) which is under GPL CC license.
|
|
*
|
|
* Copyright (C) 2011 Guy 'DeuxVis' P.
|
|
*
|
|
* This program 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 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program 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 program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
* --
|
|
* DeuxVis - device@ymail.com */
|
|
|
|
include <MCAD/teardrop.scad>
|
|
include <MCAD/involute_gears.scad>
|
|
|
|
motor_shaft_diameter=5.6;
|
|
|
|
nholes = 7;
|
|
|
|
/* Herringbone gear module, adapted from MCAD/involute_gears */
|
|
module herringbone_gear( teeth=12, circles=0, shaft=5 ) {
|
|
twist=200;
|
|
height=10;
|
|
pressure_angle=30;
|
|
|
|
gear(
|
|
number_of_teeth=teeth,
|
|
circular_pitch=320,
|
|
pressure_angle=pressure_angle,
|
|
clearance = 0.2,
|
|
gear_thickness = height/2,
|
|
rim_thickness = height/2,
|
|
rim_width = 1,
|
|
hub_thickness = height/2,
|
|
hub_diameter=1,
|
|
bore_diameter=shaft,
|
|
circles=circles,
|
|
twist=twist/teeth
|
|
);
|
|
|
|
mirror( [0,0,1] )
|
|
gear(
|
|
number_of_teeth=teeth,
|
|
circular_pitch=320,
|
|
pressure_angle=pressure_angle,
|
|
clearance = 0.2,
|
|
gear_thickness = height/2,
|
|
rim_thickness = height/2,
|
|
rim_width = 1,
|
|
hub_thickness = height/2,
|
|
hub_diameter=1,
|
|
bore_diameter=shaft,
|
|
circles=circles,
|
|
twist=twist/teeth
|
|
);
|
|
}
|
|
|
|
// Motor gear
|
|
union() difference() {
|
|
union() {
|
|
|
|
//gear
|
|
herringbone_gear( teeth=24 );
|
|
|
|
translate( [0, 0, 12] ) mirror( [0, 0, 1] ) difference() {
|
|
//shaft
|
|
cylinder( r=9, h=15, $fn=40 );
|
|
|
|
//captive nut and grub holes
|
|
translate( [0, 20, 3.5] ) rotate( [90, 0, 0] ) union() {
|
|
//enterance
|
|
translate( [0, -3, 14.5] ) cube( [6, 6, 2.6], center=true );
|
|
//nut
|
|
translate( [0, 0, 13.3] ) rotate( [0, 0, 30] )
|
|
cylinder( r=6/2+0.5, h=2.6, $fn=6 );
|
|
//grub hole
|
|
translate( [0, 0, 9] ) cylinder( r=1.5, h=10, $fn=20 );
|
|
}
|
|
}
|
|
}
|
|
|
|
//holes to save plastic
|
|
for(i=[0:nholes-1])
|
|
rotate( [0, 0, i*360/(nholes)+45], $fn=20 )
|
|
translate( [13.5, 0] )
|
|
cylinder( r=4.5, h=11, center=true, $fn=30 );
|
|
|
|
//shaft hole
|
|
translate( [0, 0, -6] ) cylinder( r=motor_shaft_diameter/2, h=20, $fn=30 );
|
|
}
|