79 lines
2.8 KiB
OpenSCAD
79 lines
2.8 KiB
OpenSCAD
// Parametric 3x 120mm Fan Wall Pressure Shroud (Left Half)
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// For 6U Open-Source Storage Array
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// Standard Units: Millimeters (mm)
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$fn = 64;
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shroud_w = 198.0; // Half-width (split down center)
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shroud_h = 220.0;
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shroud_depth = 25.0;
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wall_t = 3.5;
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fillet_r = 5.0;
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// Standard 120mm Fan dimensions
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fan_bore_d = 118.0;
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fan_hole_spacing = 105.0;
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insert_m4_d = 5.6;
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insert_m4_h = 6.5;
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module fan_aperture_with_fillet() {
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// Main Bore with 5mm Intake Radiused Fillet
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cylinder(d=fan_bore_d, h=shroud_depth + 2);
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// Front Radiused Inlet (Cone approximation / Torus cutout)
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translate([0, 0, -0.1])
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cylinder(d1=fan_bore_d + 2*fillet_r, d2=fan_bore_d, h=fillet_r);
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// 4x Fan Mounting Holes (105mm square pitch)
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for (dx = [-fan_hole_spacing/2, fan_hole_spacing/2]) {
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for (dy = [-fan_hole_spacing/2, fan_hole_spacing/2]) {
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translate([dx, dy, -1]) {
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cylinder(d=4.5, h=shroud_depth + 2);
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// Rear M4 Heat-Set Brass Insert Pocket
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translate([0, 0, shroud_depth - insert_m4_h + 1])
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cylinder(d=insert_m4_d, h=insert_m4_h + 1);
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}
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}
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}
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}
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module fan_wall_left() {
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difference() {
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// Main Solid Shroud Block
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cube([shroud_w, shroud_h, shroud_depth]);
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// Fan 0 Aperture (Left: X=66.0, Y=110.0)
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translate([66.0, 110.0, 0])
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fan_aperture_with_fillet();
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// Fan 1 Aperture (Center-Split: X=198.0, Y=110.0)
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translate([198.0, 110.0, 0])
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fan_aperture_with_fillet();
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// MCIO Twinaxial Cable Pass-Through Slot (Lower Left)
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translate([15.0, 15.0, -1])
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cube([45.0, 15.0, shroud_depth + 2]);
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// Perimeter Extrusion Mounting Holes (Ø4.5mm with countersink)
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// Top Edge
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translate([20.0, shroud_h - 10.0, -1]) cylinder(d=4.5, h=shroud_depth + 2);
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translate([100.0, shroud_h - 10.0, -1]) cylinder(d=4.5, h=shroud_depth + 2);
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translate([180.0, shroud_h - 10.0, -1]) cylinder(d=4.5, h=shroud_depth + 2);
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// Bottom Edge
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translate([20.0, 10.0, -1]) cylinder(d=4.5, h=shroud_depth + 2);
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translate([100.0, 10.0, -1]) cylinder(d=4.5, h=shroud_depth + 2);
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translate([180.0, 10.0, -1]) cylinder(d=4.5, h=shroud_depth + 2);
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// Left Frame Flange
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translate([10.0, 60.0, -1]) cylinder(d=4.5, h=shroud_depth + 2);
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translate([10.0, 160.0, -1]) cylinder(d=4.5, h=shroud_depth + 2);
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// Center Split Interlocking Lap Joint / Dovetail (Right Edge)
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translate([shroud_w - 5.0, 0, -1])
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cube([6.0, shroud_h/2, shroud_depth/2 + 1]);
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translate([shroud_w - 5.0, shroud_h/2, shroud_depth/2])
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cube([6.0, shroud_h/2 + 1, shroud_depth/2 + 1]);
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}
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}
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fan_wall_left();
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