mirror of
https://github.com/nophead/Mendel90.git
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102 lines
3.5 KiB
OpenSCAD
102 lines
3.5 KiB
OpenSCAD
//
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// Mendel90
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//
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// nop.head@gmail.com
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// hydraraptor.blogspot.com
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// based on http://www.thingiverse.com/thing:8063 by MiseryBot, CC license
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fan80x38 = [80, 38, 75, 35.75, M4_cap_screw, 40, 4.3, 84];
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fan60x25 = [60, 25, 57, 25, M3_cap_screw, 31.5, 3.6, 64];
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function fan_width(type) = type[0];
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function fan_depth(type) = type[1];
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function fan_bore(type) = type[2];
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function fan_hole_pitch(type) = type[3];
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function fan_hub(type) = type[5];
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function fan_thickness(type) = type[6];
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function fan_outer_diameter(type) = type[7];
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function fan_screw(type) = type[4];
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module fan(type) {
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width = fan_width(type);
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depth = fan_depth(type);
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thickness = fan_thickness(type);
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hole_pitch = fan_hole_pitch(type);
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corner_radius = width / 2 - hole_pitch;
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screw = fan_screw(type);
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vitamin(str("FAN", fan_width(type), fan_depth(type), ": Fan ", fan_width(type), " x ", fan_depth(type)));
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difference() {
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linear_extrude(height = depth, center = true, convexity = 4)
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difference() {
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//overall outside
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rounded_square(width, width, corner_radius);
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//main inside bore, less hub
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difference() {
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circle(r = fan_bore(type) / 2, center = true);
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circle(r = fan_hub(type) / 2, center = true);
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}
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//Mounting holes
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for(x = [-hole_pitch, hole_pitch])
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for(y = [-hole_pitch, hole_pitch])
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translate([x, y])
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circle(r = screw_clearance_radius(screw), center = true);
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}
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//Remove outside ring
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difference() {
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cylinder(r = sqrt(2) * width / 2, h = depth - 2 * thickness, center = true);
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cylinder(r = fan_outer_diameter(type) / 2, h = depth - 2 * thickness + 0.2, center = true);
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}
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}
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//Seven Blades
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linear_extrude(height = depth - 1, center = true, convexity = 4, twist = -30, slices = depth / 2)
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for(i= [0 : 6])
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rotate((360 * i) / 7)
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translate([0, -1.5 / 2])
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square([fan_bore(type) / 2 - 0.75, 1.5]);
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}
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module fan_holes(type, poly = false) {
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//Mounting holes
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hole_pitch = fan_hole_pitch(type);
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screw = fan_screw(type);
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for(x = [-hole_pitch, hole_pitch])
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for(y = [-hole_pitch, hole_pitch])
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translate([x, y, 0])
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if(poly)
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poly_cylinder(r = screw_clearance_radius(screw), h = 100, center = true);
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else
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cylinder(r = screw_clearance_radius(screw), h = 100, center = true);
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cylinder(r = fan_bore(type) / 2, h = 100, center = true);
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}
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module fan_assembly(type, thickness) {
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color(fan_color)
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render()
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fan(type);
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hole_pitch = fan_hole_pitch(type);
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screw = fan_screw(type);
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washer = screw_washer(screw);
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nut = screw_nut(screw);
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for(x = [-hole_pitch, hole_pitch])
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for(y = [-hole_pitch, hole_pitch]) {
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translate([x, y, thickness + fan_depth(type) / 2])
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screw_and_washer(screw, screw_longer_than(thickness + fan_thickness(type) +
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washer_thickness(washer) + nut_thickness(nut, true)));
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translate([x, y, fan_depth(type) / 2 - fan_thickness(type)])
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rotate([180, 0, 0])
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nut(screw_nut(screw), true);
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}
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}
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//fan(fan80x38);
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//fan(fan60x25);
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