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157 lines
3.6 KiB
157 lines
3.6 KiB
/*
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OPENSCAD Library file by the DoomMeister
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Mounting surround for small DC fans (25 - 120mm)
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Data taken from various places around the internet.
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http://www.qwikflow.com/dc_fans.html
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//Released under the terms of the GNU GPL v3.0
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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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This program is distributed in the hope that it will be useful,
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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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*/
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//uncomment this for example
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fan_mount(size=40,thick=3);
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module fan_mount(size=40,thick = 4)
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{
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if(size == 25)
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{
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_fan_mount(
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fan_size = 25,
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fan_mounting_pitch = 20,
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fan_m_hole_dia = 3,
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holder_thickness = thick
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);
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}
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if(size == 30)
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{
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_fan_mount(
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fan_size = 30,
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fan_mounting_pitch = 24,
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fan_m_hole_dia = 3,
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holder_thickness = thick
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);
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}
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if(size == 40)
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{
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_fan_mount(
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fan_size = 40,
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fan_mounting_pitch = 32,
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fan_m_hole_dia = 3.7,
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holder_thickness = thick
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);
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}
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if(size == 45)
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{
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_fan_mount(
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fan_size = 45,
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fan_mounting_pitch = 37,
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fan_m_hole_dia = 4.3,
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holder_thickness = thick
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);
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}
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if(size == 60)
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{
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_fan_mount(
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fan_size = 60,
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fan_mounting_pitch = 50,
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fan_m_hole_dia = 4.4,
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holder_thickness = thick
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);
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}
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if(size == 80)
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{
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_fan_mount(
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fan_size = 80,
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fan_mounting_pitch = 71.5,
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fan_m_hole_dia = 4.4,
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holder_thickness = thick
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);
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}
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if(size == 120)
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{
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_fan_mount(
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fan_size = 120,
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fan_mounting_pitch = 105,
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fan_m_hole_dia = 4.4,
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holder_thickness = thick
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);
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}
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}
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//inner module
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module _fan_mount(
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fan_size, //nominsl size of fan
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fan_mounting_pitch, //pitch between mounting holes
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fan_m_hole_dia, //mounting hole diameter
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holder_thickness //user defined thickness
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)
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{
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offset1 = (fan_size-(fan_mounting_pitch + fan_m_hole_dia))/2;
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offset2 = (fan_size-(fan_mounting_pitch))/2;
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offset3 = offset2 + fan_mounting_pitch;
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thickness = (fan_size-fan_mounting_pitch)/2;
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//difference()
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//{
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linear_extrude(height = holder_thickness)
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union()
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{
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difference()
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{
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translate([fan_m_hole_dia/2,fan_m_hole_dia/2,0])
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minkowski()
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{
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square([fan_size - fan_m_hole_dia,fan_size - fan_m_hole_dia]);
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circle(r= fan_m_hole_dia/2, $fn=20);
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}
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translate([offset1,offset1,0])
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square([fan_mounting_pitch + fan_m_hole_dia,fan_mounting_pitch + fan_m_hole_dia]);
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}
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translate([offset2,offset2,0])
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rotate([0,0,0])_corner_hole();
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translate([offset3,offset2,0])
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rotate([0,0,90])_corner_hole();
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translate([offset2,offset3,0])
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rotate([0,0,90])_corner_hole();
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translate([offset3,offset3,0])
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rotate([0,0,0])_corner_hole();
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}
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module _corner_hole()
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{
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difference(){
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union(){
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difference(){
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square([fan_m_hole_dia + thickness,fan_m_hole_dia + thickness],center=true);
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square([(fan_m_hole_dia + thickness)/2,(fan_m_hole_dia + thickness)/2],center=false);
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translate([-(fan_m_hole_dia + thickness)/2,-(fan_m_hole_dia + thickness)/2])
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square([(fan_m_hole_dia + thickness)/2,(fan_m_hole_dia + thickness)/2],center=false);
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}
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circle(r=(fan_m_hole_dia + thickness)/2, $fn=20);
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}
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circle(r=(fan_m_hole_dia)/2, $fn=20);
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}
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}
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echo(offset1,offset2,thickness);
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}
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