66 lines
2.2 KiB
OpenSCAD
66 lines
2.2 KiB
OpenSCAD
//
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// NopSCADlib Copyright Chris Palmer 2020
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// nop.head@gmail.com
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// hydraraptor.blogspot.com
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//
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// This file is part of NopSCADlib.
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//
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// NopSCADlib is free software: you can redistribute it and/or modify it under the terms of the
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// GNU General Public License as published by the Free Software Foundation, either version 3 of
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// the License, or (at your option) any later version.
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//
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// NopSCADlib is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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// See the GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License along with NopSCADlib.
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// If not, see <https://www.gnu.org/licenses/>.
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//
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//! Shaft couplings
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//
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include <../core.scad>
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use <../utils/tube.scad>
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function sc_length(type) = type[1]; //! Coupling length
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function sc_diameter(type) = type[2]; //! Coupling outer diameter
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function sc_diameter1(type) = type[3]; //! Diameter of smaller shaft
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function sc_diameter2(type) = type[4]; //! Diameter of larger shaft
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module shaft_coupling(type, colour = "silver") { //! Draw the shaft coupling
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vitamin(str("shaft_coupling(", type[0], "): Shaft coupling ", type[0]));
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length = sc_length(type);
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radius = sc_diameter(type) / 2;
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r1 = sc_diameter1(type) / 2;
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r2 = sc_diameter2(type) / 2;
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grub_length = 3;
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module grub_screw_positions() {
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grub_offset_z = 5;
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for(z = [-length / 2 + grub_offset_z, length / 2 - grub_offset_z])
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translate_z(z)
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for(a = [0, 90])
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rotate([-90, 0, a])
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translate_z(radius + 1)
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children();
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}
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color(colour) {
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render(convexity=2) difference() {
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union() {
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translate_z(-length / 2)
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tube(radius, r1, length / 2, false);
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tube(radius, r2, length / 2, false);
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}
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grub_screw_positions()
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rotate([180, 0, 0])
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cylinder(r = screw_radius(M3_grub_screw), h = 5);
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}
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}
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grub_screw_positions()
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not_on_bom() screw(M3_grub_screw, grub_length);
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}
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