109 lines
4.2 KiB
OpenSCAD
109 lines
4.2 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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//! Variable auto transformers.
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//
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include <../utils/core/core.scad>
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use <screw.scad>
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function variac_diameter(type) = type[2]; //! Body diameter
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function variac_height(type) = type[3]; //! Body height
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function variac_bulge_dia(type) = type[4]; //! Bulge to opposite edge
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function variac_bulge_width(type) = type[5]; //! Width of the bulge
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function variac_shaft_dia(type) = type[6]; //! Shaft diameter
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function variac_shaft_length(type) = type[7]; //! Shaft length
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function variac_screws(type) = type[8]; //! Number of screws
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function variac_screw_pitch(type) = type[9]; //! Pitch of screws
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function variac_screw(type) = type[10]; //! Screw type
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function variac_dial_dia(type) = type[11]; //! Dial diameter
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function variac_dial_thickness(type) = type[12]; //! Dial thickness
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function variac_dial_hole_pitch(type)= type[13] ? type[13] : variac_screw_pitch(type); //! Screw pitch for the dial
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function variac_dial_hole_r(type) = type[14] ? type[14] : screw_clearance_radius(variac_screw(type)); //! Dial screw hole radius
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function variac_dial_big_hole(type) = type[15] ? type[15] : variac_shaft_dia(type) + 2; //! Central dial hole diameter
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function variac_radius(type) = variac_diameter(type) / 2; //! Body radius
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module variac_hole_positions(type, pitch = undef) //! Position children at the screw positions
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for(i = [0 : variac_screws(type) - 1])
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rotate(360 * (i + 0.5) / variac_screws(type) - 90)
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translate([pitch ? pitch : variac_screw_pitch(type), 0])
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children();
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module variac_holes(type, h = 100) { //! Drill panel holes for specified variac
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variac_hole_positions(type)
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drill(screw_clearance_radius(variac_screw(type)), h);
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drill(variac_shaft_dia(type) / 2 + 1, h);
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}
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module variac_dial(type) //! Draw the dial for the specified variac
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color("silver") linear_extrude(variac_dial_thickness(type))
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difference() {
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circle(d = variac_dial_dia(type));
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circle(variac_dial_big_hole(type) / 2);
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variac_hole_positions(type, variac_dial_hole_pitch(type))
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circle(variac_dial_hole_r(type));
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}
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module variac(type, thickness = 3, dial = true) { //! Draw the specified variac with screws and possibly the dial when it is fixed and not rotating
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vitamin(str("variac(", type[0], ", 3): Variac ", type[1]));
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dia = variac_diameter(type);
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w = variac_bulge_width(type);
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h = variac_height(type);
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bulge_r = variac_bulge_dia(type) - dia / 2;
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module shape() {
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circle(d = dia);
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translate([-w / 2, -bulge_r])
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square([w, bulge_r]);
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}
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translate_z(-h) {
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color("#A66955") {
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linear_extrude(h)
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difference() {
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shape();
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variac_hole_positions(type)
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circle(screw_radius(variac_screw(type)));
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}
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linear_extrude(h - 10)
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shape();
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}
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color("silver")
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translate_z(1)
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cylinder(d = variac_shaft_dia(type), h = h + variac_shaft_length(type) - 1);
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if(dial)
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translate_z(thickness + h)
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variac_dial(type);
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translate_z(thickness + h + (dial ? variac_dial_thickness(type) : 0))
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not_on_bom()
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variac_hole_positions(type)
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screw_and_washer(variac_screw(type), 16);
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}
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}
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