NopSCADlib/vitamins/rod.scad

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//
// NopSCADlib Copyright Chris Palmer 2018
// nop.head@gmail.com
// hydraraptor.blogspot.com
//
// This file is part of NopSCADlib.
//
// NopSCADlib 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 3 of
// the License, or (at your option) any later version.
//
// NopSCADlib 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 NopSCADlib.
// If not, see <https://www.gnu.org/licenses/>.
//
//
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//! Steel rods and studding with chamfered ends.
//!
//! These items are sysmtrical, so by default the origin is in the centre but it can be changed to the bottom.
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//
include <../utils/core/core.scad>
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use <../utils/thread.scad>
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rod_colour = grey80;
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studding_colour = grey70;
leadscrew_colour = grey70;
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module rod(d , l, center = true) { //! Draw a smooth rod with specified diameter and length
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vitamin(str("rod(", d, ", ", l, "): Smooth rod ", d, "mm x ", l, "mm"));
chamfer = d / 10;
color(rod_colour)
translate_z(center ? 0 : l / 2)
hull() {
cylinder(d = d, h = l - 2 * chamfer, center = true);
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cylinder(d = d - 2 * chamfer, h = l, center = true);
}
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}
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module studding(d , l, center = true) { //! Draw a threaded rod with specified diameter and length
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vitamin(str("studding(", d, ", ", l,"): Threaded rod M", d, " x ", l, "mm"));
chamfer = d / 20;
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pitch = metric_coarse_pitch(d);
translate_z(center ? 0 : l / 2)
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if(show_threads && pitch)
male_metric_thread(d, pitch, l, colour = rod_colour);
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else
color(studding_colour)
hull() {
cylinder(d = d, h = l - 2 * chamfer, center = true);
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cylinder(d = d - 2 * chamfer, h = l, center = true);
}
}
module leadscrew(d , l, lead, starts, center = true) { //! Draw a leadscrew with specified diameter, length, lead and number of starts
vitamin(str("leadscrew(", d, ", ", l, ", ", lead, ", ", starts, "): Leadscrew ", d, " x ", l, "mm, ", lead, "mm lead, ", starts, " starts"));
pitch = lead / starts;
chamfer = pitch / 2;
translate_z(center ? 0 : l / 2)
if(show_threads && pitch)
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thread(d - pitch, lead, l, thread_profile(pitch / 2, pitch * 0.366, 30), top = 45, bot = 45, starts = starts, colour = rod_colour);
else
color(leadscrew_colour)
hull() {
cylinder(d = d, h = l - 2 * chamfer, center = true);
cylinder(d = d - 2 * chamfer, h = l, center = true);
}
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}