120 lines
4.1 KiB
OpenSCAD
120 lines
4.1 KiB
OpenSCAD
//
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// NopSCADlib Copyright Chris Palmer 2018
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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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//
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//! Clamp for ribbon cable and polypropylene strip.
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//
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include <core.scad>
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include <vitamins/screws.scad>
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include <vitamins/inserts.scad>
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use <vitamins/cable_strip.scad>
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wall = 2;
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min_wall = 2 * extrusion_width;
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screw = M3_cap_screw;
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insert = screw_insert(screw);
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screw_depth = insert_length(insert) + 1;
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function ribbon_clamp_hole_pitch(ways) = ribbon_clamp_slot(ways) + 2 * min_wall + 2 * corrected_radius(insert_hole_radius(insert)); //! Hole pitch
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function ribbon_clamp_width() = 2 * (insert_hole_radius(insert) + 2); //! Width
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function ribbon_clamp_length(ways) = ribbon_clamp_hole_pitch(ways) + ribbon_clamp_width(); //! Length given ways
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function ribbon_clamp_height() = screw_depth + 1; //! Height
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module ribbon_clamp_hole_positions(ways, side = undef) //! Place children at hole positions
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for(x = is_undef(side) ? [-1, 1] : side)
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translate([x * ribbon_clamp_hole_pitch(ways) / 2, 0])
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children();
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module ribbon_clamp_holes(ways, h = 20) //! Drill screw holes
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ribbon_clamp_hole_positions(ways)
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drill(screw_clearance_radius(screw), h);
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module ribbon_clamp(ways) { //! Generate STL for given number of ways
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stl(str("ribbon_clamp_", ways));
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pitch = ribbon_clamp_hole_pitch(ways);
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d = ribbon_clamp_width();
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h = ribbon_clamp_height();
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t = h - ribbon_clamp_slot_depth() - wall;
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difference() {
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union() {
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hull() {
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translate_z(h - t / 2)
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cube([ribbon_clamp_hole_pitch(ways), d, t], center = true);
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translate_z(1)
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cube([pitch, max(wall, d - 2 * (h - t)), 2], center = true);
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}
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ribbon_clamp_hole_positions(ways, -1)
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cylinder(d = d, h = h);
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ribbon_clamp_hole_positions(ways, 1)
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cylinder(d = d, h = h);
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}
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translate_z(h)
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cube([ribbon_clamp_slot(ways), d + 1, ribbon_clamp_slot_depth() * 2], center = true);
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ribbon_clamp_hole_positions(ways)
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translate_z(h)
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rotate(22.5)
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insert_hole(insert, screw_depth - insert_length(insert));
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}
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}
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module ribbon_clamp_assembly(ways) pose([55, 180, 25]) //! Printed part with inserts in place
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assembly(str("ribbon_clamp_", ways)) {
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h = ribbon_clamp_height();
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color(pp1_colour) render()
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translate_z(h) vflip() ribbon_clamp(ways);
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ribbon_clamp_hole_positions(ways)
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vflip()
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insert(insert);
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}
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module ribbon_clamp_fastened_assembly(ways, thickness, screw = screw) { //! Clamp with fasteners in place
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tape_l = floor(ribbon_clamp_slot(ways));
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tape_width = 25;
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tape_thickness = 0.5;
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vitamin(str(": Tape self amalgamating silicone ",tape_l," x 25mm"));
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washer = screw_washer(screw);
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screw_length = screw_shorter_than(2 * washer_thickness(washer) + thickness + screw_depth);
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ribbon_clamp_assembly(ways);
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color("red") translate_z(tape_thickness / 2)
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cube([tape_l, tape_width, tape_thickness], center = true);
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ribbon_clamp_hole_positions(ways)
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vflip()
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translate_z(thickness)
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screw_and_washer(screw, screw_length, true);
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}
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module ribbon_clamp_20_stl() ribbon_clamp(20);
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//! * Place inserts into the holes and press home with a soldering iron with a conical bit heated to 200°C.
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module ribbon_clamp_20_assembly() ribbon_clamp_assembly(20);
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