119 lines
4.3 KiB
OpenSCAD
119 lines
4.3 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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//! KP pillow block bearings
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//
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include <../core.scad>
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use <../utils/tube.scad>
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use <washer.scad>
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use <ball_bearing.scad>
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kp_pillow_block_colour = grey(70);
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function kp_diameter(type) = type[1]; //! Rod hole diameter
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function kp_hole_offset(type) = type[2]; //! Rod hole offset
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function kp_size(type) = [type[3],type[8],type[5]]; //! Size of bracket
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function kp_base_height(type) = type[7]; //! Height of base containing the bolts
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function kp_screw_separation(type) = type[4]; //! Separation of bolts in the base
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module kp_pillow_block(type) { //! Draw the KP pillow block
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vitamin(str("kp_pillow_block(", type[0], "): ", type[0], " pillow block"));
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d = kp_diameter(type);
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H = kp_hole_offset(type);
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L = kp_size(type)[0];
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J = kp_screw_separation(type);
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A = kp_size(type)[2];// sizeZ, includes protruding center
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N = type[6];
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H1 = kp_base_height(type);
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H0 = kp_size(type)[1];
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K = type[9];
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S = type[10];
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b = type[11];
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bolthole_radius = type[12];
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color(kp_pillow_block_colour)
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translate([0, -H, 0]) {
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fillet = 1;
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squareSizeX = (L - H0) / 2 + fillet;
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rotate([-90, 0, 0])
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linear_extrude(H1)
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difference() {
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union() {
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for(i = [-L / 2, L / 2 - squareSizeX])
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translate([i, -A / 2])
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rounded_square([squareSizeX, A], fillet, center = false);
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}
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for(i = [-J / 2, J / 2])
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translate([i, 0])
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circle(r = bolthole_radius);
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}
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translate_z(-A / 2) {
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for(x = [- L / 2 + squareSizeX - fillet, L / 2 - squareSizeX + fillet - 2])
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translate([x, 0, 0])
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cube([2, H, A]);
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translate([0 , H, 0])
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tube(H0 / 2, b / 2, A, center = false);
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}
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stripThickness = 4;
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translate([-H0 / 2, 0, -stripThickness / 2])
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linear_extrude(stripThickness) difference() {
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square([H0, H]);
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translate([H0 / 2, H])
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circle(b / 2);
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}
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}
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not_on_bom() no_explode()
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ball_bearing(type[13]);
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}
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module kp_pillow_block_hole_positions(type) { //! Place children at hole positions
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for(x = [-kp_screw_separation(type), kp_screw_separation(type)])
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translate([x / 2, kp_base_height(type) - kp_hole_offset(type), 0])
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rotate([-90,0,0])
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children();
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}
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module kp_pillow_block_assembly(type, part_thickness = 2, screw_type = M5_cap_screw, nut_type = undef) { //! Assembly with fasteners in place
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kp_pillow_block(type);
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screw_washer_thickness = washer_thickness(screw_washer(screw_type));
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nut_type = is_undef(nut_type) ? screw_nut(screw_type) : nut_type;
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nut_washer_type = nut_washer(nut_type);
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nut_washer_thickness = nut_washer_type ? washer_thickness(nut_washer_type) : 0;
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nut_offset = kp_base_height(type) + part_thickness;
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screw_length = screw_shorter_than(nut_offset + screw_washer_thickness + nut_thickness(nut_type) + nut_washer_thickness);
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kp_pillow_block_hole_positions(type) {
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screw_and_washer(screw_type, screw_length);
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translate_z(-nut_offset)
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vflip()
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if(nut_washer_type)
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nut_and_washer(nut_type);
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else
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sliding_t_nut(nut_type);
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}
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}
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