57 lines
1.5 KiB
OpenSCAD
57 lines
1.5 KiB
OpenSCAD
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/// magnet mount for for magnets with size 20x10x5 mm and be quiet! Silent Wings 3 120/140 mm fans
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$fn=128;
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g = 10; // magnet gap
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fan = 120; // fan size (120 or 140)
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h = 4; // base height
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r = 5; // edge width
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pn = 7; // number of pins
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ph = 7; // pin height
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pa = 20; // pin angle
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mw = 10.25; // magnet width
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ml = 20.25; // magnet length
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mb = 17; // magnet bar width
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fw= fan==140 ? 48.3 : 42.5; // fan center width
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eo= fan==140 ? 10 : 5; // elliptic extra offset
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d=fw+r+r; // total diameter
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cl=d-r; // magnet bar length
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a=360/pn; // segment angle
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e=(d+g-eo)/d; // elliptic scale factor
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difference() {
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union() {
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difference() {
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union() {
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translate([0,0,0]) cylinder(h+ph,d/2,d/2);
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translate([0,0,0]) scale([e, 1, 1]) cylinder(h,d/2,d/2);
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}
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translate([0,0,-1]) cylinder(h+ph+2,d/2-r,d/2-r);
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for (i =[0:1:pn-1]) {
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pin(a*i);
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}
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}
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translate([-cl/2,-mb/2,0]) cube([cl,mb,h]);
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rotate ([0,0,90]) translate([-cl/2,-(mb-mw)/4-d/7,0]) cube([cl,(mb-mw)/2,h]);
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rotate ([0,0,90]) translate([-cl/2,-(mb-mw)/4+d/7,0]) cube([cl,(mb-mw)/2,h]);
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}
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translate([-ml-g/2,-mw/2,-1]) cube([ml,mw,h]);
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translate([g/2,-mw/2,-1]) cube([ml,mw,h]);
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}
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module pin(r) {
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translate([0,0,0.01]) rotate([0,0,r]) hull() {
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translate([0,0,h]) cylinder(h+ph,0.1,0.1);
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translate([-d,0,h]) cylinder(h+ph,0.1,0.1);
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rotate ([0,0,a-pa])union() {
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translate([0,0,h]) cylinder(h+ph,0.1,0.1);
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translate([-d,0,h]) cylinder(h+ph,0.1,0.1);
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}
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}
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}
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