110 lines
3.8 KiB
OpenSCAD
110 lines
3.8 KiB
OpenSCAD
/*
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This file is part of SBC Case Builder https://github.com/hominoids/SBC_Case_Builder
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Copyright 2022,2023,2024,2025 Edward A. Kisiel hominoid@cablemi.com
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>
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Code released under GPLv3: http://www.gnu.org/licenses/gpl.html
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grommet(face, style, od, id, wall, assembly, mask)
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grommet_clip(style, od, id, height)
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*/
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/*
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NAME: grommet
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DESCRIPTION: creates different groumet styles
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TODO: none
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USAGE: grommet(face, style, od, id, wall, assembly, mask)
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face = "top","bottom","front","rear","left","right"
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style = "sleeve"
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size[0] = od outside diameter of grommet body
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size[1] = id inside hole diameter of grommet body
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size[2] = wall thickness of installation
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assembly = false
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mask[0] = true enables component mask
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mask[1] = mask length
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mask[2] = mask setback
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mask[3] = mstyle "default"
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*/
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module grommet(face = "bottom", style = "sleeve", od, id, wall, assembly, mask) {
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height = 4.5+(2*wall);
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enablemask = mask[0];
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mlength = height+mask[1];
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msetback = mask[2];
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mstyle = mask[3];
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cut = .25;
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lip_od = od+4;
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lip_thick = 2.5;
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adj = .01;
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$fn = 90;
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rotx = face == "rear" ? 270 : face == "front" || face == "left" || face == "right" ? 90 : face == "top" ? 180 : 0;
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roty = 0;
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rotz = face == "left" ? 90 : face == "right" ? 270 : 0;
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rx = face == "left" ? -lip_thick : face == "right" ? lip_thick : 0;
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ry = face == "front" ? lip_thick : face == "rear" ? -lip_thick : 0;
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rz = face == "bottom" ? -lip_thick : face == "top" ? lip_thick : 0;
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translate([rx,ry,rz]) rotate([rotx,roty,rotz]) {
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if(enablemask == true && mstyle == "default") {
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if(style == "sleeve") {
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translate([0, 0, -adj-msetback]) cylinder(d = od+.5, h = mlength);
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}
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}
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if(enablemask == false) {
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if(style == "sleeve") {
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difference() {
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union() {
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cylinder(d=od, h=height);
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cylinder(d=lip_od, h=2.5);
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}
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translate([0,0,-adj]) cylinder(d=id, h=height+(2*adj));
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translate([-lip_od/2,-cut/2,-adj]) cube([lip_od+(2*adj),cut,height+(2*adj)]);
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translate([0,0,2.5+wall]) grommet_clip(style,od,id,wall);
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}
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if(assembly == true) {
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translate([0,0,2.5+wall]) grommet_clip(style,od,id,wall);
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}
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}
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}
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}
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}
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module grommet_clip(style,od,id,wall) {
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height = 2.5+wall;
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lip_od = od+4;
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adj = .01;
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$fn = 90;
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if(style == "sleeve") {
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difference() {
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cylinder(d=lip_od, h=2.5);
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difference() {
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translate([0,0,-adj]) cylinder(d=od, h=wall+2*adj);
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translate([-lip_od/2,-od/2,-adj]) cube([lip_od+(2*adj),2,height-2]);
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translate([-lip_od/2,-2+od/2,-adj]) cube([lip_od+(2*adj),2,height-2]);
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}
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translate([-lip_od,-(od-6)/2,-adj]) cube([lip_od+(2*adj),od-6,wall+(2*adj)]);
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}
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}
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}
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