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Initial code dump.
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Revar Desmera
314
nema_steppers.scad
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314
nema_steppers.scad
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//////////////////////////////////////////////////////////////////////
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// Masks and models for NEMA stepper motors.
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//////////////////////////////////////////////////////////////////////
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/*
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BSD 2-Clause License
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Copyright (c) 2017, Revar Desmera
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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include <transforms.scad>
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include <shapes.scad>
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include <math.scad>
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function nema_motor_width(size) = lookup(size, [
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[11.0, 28.2],
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[14.0, 35.2],
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[17.0, 42.3],
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[23.0, 57.0],
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[34.0, 86.0],
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]);
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function nema_motor_plinth_height(size) = lookup(size, [
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[11.0, 1.5],
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[14.0, 2.0],
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[17.0, 2.0],
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[23.0, 1.6],
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[34.0, 2.03],
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]);
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function nema_motor_plinth_diam(size) = lookup(size, [
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[11.0, 22.0],
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[14.0, 22.0],
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[17.0, 22.0],
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[23.0, 38.1],
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[34.0, 73.0],
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]);
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function nema_motor_screw_spacing(size) = lookup(size, [
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[11.0, 23.11],
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[14.0, 26.0],
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[17.0, 30.99],
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[23.0, 47.14],
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[34.0, 69.6],
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]);
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function nema_motor_screw_size(size) = lookup(size, [
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[11.0, 2.6],
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[14.0, 3.0],
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[17.0, 3.0],
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[23.0, 5.1],
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[34.0, 5.5],
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]);
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function nema_motor_screw_depth(size) = lookup(size, [
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[11.0, 3.0],
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[14.0, 4.5],
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[17.0, 4.5],
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[23.0, 4.8],
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[34.0, 9.0],
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]);
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module nema11_stepper(h=24, shaft=5, shaft_len=20)
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{
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size = 11;
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motor_width = nema_motor_width(size);
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plinth_height = nema_motor_plinth_height(size);
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plinth_diam = nema_motor_plinth_diam(size);
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screw_spacing = nema_motor_screw_spacing(size);
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screw_size = nema_motor_screw_size(size);
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screw_depth = nema_motor_screw_depth(size);
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difference() {
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color([0.4, 0.4, 0.4]) {
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translate([0, 0, -h/2]) {
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rrect(size=[motor_width, motor_width, h], r=2, center=true);
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}
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}
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xspread(screw_spacing)
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yspread(screw_spacing)
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down(scred_depth/2-0.05)
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cylinder(r=screw_size/2, h=screw_depth, center=true, $fn=max(12,segs(screw_size/2)));
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}
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color([0.4, 0.4, 0.4])
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translate([0, 0, plinth_height/2])
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cylinder(h=plinth_height, r=plinth_diam/2, center=true);
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color("silver")
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translate([0, 0, shaft_len/2])
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cylinder(h=shaft_len, r=shaft/2, center=true, $fn=max(12,segs(shaft/2)));
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}
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//!nema11_stepper();
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module nema14_stepper(h=24, shaft=5, shaft_len=24)
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{
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size = 14;
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motor_width = nema_motor_width(size);
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plinth_height = nema_motor_plinth_height(size);
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plinth_diam = nema_motor_plinth_diam(size);
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screw_spacing = nema_motor_screw_spacing(size);
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screw_size = nema_motor_screw_size(size);
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screw_depth = nema_motor_screw_depth(size);
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difference() {
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color([0.4, 0.4, 0.4]) {
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translate([0, 0, -h/2]) {
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rrect(size=[motor_width, motor_width, h], r=2, center=true);
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}
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}
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xspread(screw_spacing)
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yspread(screw_spacing)
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down(screw_depth/2-0.05)
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cylinder(r=screw_size/2, h=screw_depth, center=true, $fn=max(12,segs(screw_size/2)));
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}
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color([0.4, 0.4, 0.4])
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translate([0, 0, plinth_height/2])
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cylinder(h=plinth_height, r=plinth_diam/2, center=true);
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color("silver")
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translate([0, 0, shaft_len/2])
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cylinder(h=shaft_len, r=shaft/2, center=true, $fn=max(12,segs(shaft/2)));
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}
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//!nema14_stepper();
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module nema17_stepper(h=34, shaft=5, shaft_len=20)
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{
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size = 17;
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motor_width = nema_motor_width(size);
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plinth_height = nema_motor_plinth_height(size);
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plinth_diam = nema_motor_plinth_diam(size);
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screw_spacing = nema_motor_screw_spacing(size);
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screw_size = nema_motor_screw_size(size);
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screw_depth = nema_motor_screw_depth(size);
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difference() {
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color([0.4, 0.4, 0.4]) {
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down(h/2) {
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rrect(size=[motor_width, motor_width, h], r=2, center=true);
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}
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}
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xspread(screw_spacing)
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yspread(screw_spacing)
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down(screw_depth/2-0.05)
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cylinder(r=screw_size/2, h=screw_depth, center=true, $fn=max(12,segs(screw_size/2)));
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}
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color([0.4, 0.4, 0.4])
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up(plinth_height/2)
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cylinder(h=plinth_height, r=plinth_diam/2, center=true);
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color([0.9, 0.9, 0.9]) {
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down(h-motor_width/12) {
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fwd(motor_width/2+motor_width/24/2-0.1) {
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difference() {
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cube(size=[motor_width/8, motor_width/24, motor_width/8], center=true);
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xrot(90) {
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cylinder(d=motor_width/8-2, h=motor_width/6, center=true, $fn=12);
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}
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}
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}
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}
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}
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color("silver") {
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difference() {
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cylinder(h=shaft_len, r=shaft/2, $fn=max(12,segs(shaft/2)));
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up(shaft_len/2+1) {
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right(shaft_len/2+shaft/2-0.5) {
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cube(shaft_len, center=true);
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}
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}
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}
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}
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}
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//!nema17_stepper();
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module nema23_stepper(h=50, shaft=6.35, shaft_len=25)
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{
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size = 23;
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motor_width = nema_motor_width(size);
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plinth_height = nema_motor_plinth_height(size);
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plinth_diam = nema_motor_plinth_diam(size);
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screw_spacing = nema_motor_screw_spacing(size);
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screw_size = nema_motor_screw_size(size);
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screw_depth = nema_motor_screw_depth(size);
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screw_inset = motor_width - screw_spacing + 1;
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difference() {
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union() {
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color([0.4, 0.4, 0.4]) {
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translate([0, 0, -h/2]) {
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rrect(size=[motor_width, motor_width, h], r=2, center=true);
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}
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}
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color([0.4, 0.4, 0.4])
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translate([0, 0, plinth_height/2])
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cylinder(h=plinth_height, r=plinth_diam/2, center=true);
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color("silver")
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translate([0, 0, shaft_len/2])
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cylinder(h=shaft_len, r=shaft/2, center=true, $fn=max(12,segs(shaft/2)));
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}
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xspread(screw_spacing) {
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yspread(screw_spacing) {
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down(screw_depth/2)
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cylinder(r=screw_size/2, h=screw_depth+2, center=true, $fn=max(12,segs(screw_size/2)));
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down(screw_depth+h/2)
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cube(size=[screw_inset, screw_inset, h], center=true);
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}
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}
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}
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}
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//!nema23_stepper();
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module nema34_stepper(h=75, shaft=12.7, shaft_len=32)
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{
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size = 34;
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motor_width = nema_motor_width(size);
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plinth_height = nema_motor_plinth_height(size);
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plinth_diam = nema_motor_plinth_diam(size);
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screw_spacing = nema_motor_screw_spacing(size);
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screw_size = nema_motor_screw_size(size);
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screw_depth = nema_motor_screw_depth(size);
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screw_inset = motor_width - screw_spacing + 1;
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difference() {
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union() {
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color([0.4, 0.4, 0.4]) {
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translate([0, 0, -h/2]) {
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rrect(size=[motor_width, motor_width, h], r=2, center=true);
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}
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}
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color([0.4, 0.4, 0.4])
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translate([0, 0, plinth_height/2])
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cylinder(h=plinth_height, r=plinth_diam/2, center=true);
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color("silver")
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translate([0, 0, shaft_len/2])
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cylinder(h=shaft_len, r=shaft/2, center=true, $fn=max(24,segs(shaft/2)));
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}
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xspread(screw_spacing) {
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yspread(screw_spacing) {
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down(screw_depth/2)
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cylinder(r=screw_size/2, h=screw_depth+2, center=true, $fn=max(12,segs(screw_size/2)));
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down(screw_depth+h/2)
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cube(size=[screw_inset, screw_inset, h], center=true);
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}
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}
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}
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}
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//!nema34_stepper();
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module nema17_mount_holes(depth=5, l=5, slop=printer_slop)
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{
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size = 17;
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plinth_diam = nema_motor_plinth_diam(size)+slop;
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screw_spacing = nema_motor_screw_spacing(size);
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screw_size = nema_motor_screw_size(size)+slop;
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union() {
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xspread(screw_spacing) {
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yspread(screw_spacing) {
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if (l>0) {
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union() {
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yspread(l) cylinder(h=depth, d=screw_size, center=true, $fn=max(8,segs(screw_size/2)));
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cube([screw_size, l, depth], center=true);
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}
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} else {
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cylinder(h=depth, d=screw_size, center=true, $fn=max(8,segs(screw_size/2)));
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}
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}
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}
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}
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if (l>0) {
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union () {
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yspread(l) cylinder(h=depth, d=plinth_diam, center=true);
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cube([plinth_diam, l, depth], center=true);
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}
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} else {
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cylinder(h=depth, d=plinth_diam, center=true);
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}
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}
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//!nema17_mount_holes(depth=5, l=5);
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// vim: noexpandtab tabstop=4 shiftwidth=4 softtabstop=4 nowrap
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