68 lines
2.1 KiB
OpenSCAD
68 lines
2.1 KiB
OpenSCAD
use <./common/common.scad>
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use <./common/Triangles.scad>;
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module knob (H = 12, D = 24, DEPTH = 4, BOLT = "M4", TYPE = "hex") {
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NOTCH = 1;
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N = ceil(D * 3.14 / 1.5);
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BOT = 12;
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BOT_H = 2;
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THICKNESS = 4.25;
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ID = D - THICKNESS;
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supported = true;
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echo(N);
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difference() {
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union () {
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cylinder(r = D / 2, h = H, center = true, $fn = 360);
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translate([0, 0, -(H / 2) - (BOT_H / 2)]) {
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cylinder(r = BOT / 2, h = 2, center = true, $fn = 360);
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}
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}
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if (BOLT == "M3") {
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cylinder(r = 3.1 / 2, h = H * 2, center = true, $fn = 60);
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} else if (BOLT == "M4") {
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cylinder(r = 4.25 / 2, h = H * 2, center = true, $fn = 60);
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} else if (BOLT == "M5") {
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cylinder(r = 5.1 / 2, h = H * 2, center = true, $fn = 60);
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} else {
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supported = false;
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}
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assert(supported, "Bolt size not supported!");
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//hollow inner cylinder
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translate([0, 0, DEPTH]) cylinder(r = ID / 2, h = H, center = true, $fn = 360);
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if (BOLT == "M4" && TYPE == "hex") {
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translate([0, 0, -(H / 2) + DEPTH - 1.4]) m4_nut();
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} else if (BOLT == "M5" && TYPE == "hex" ) {
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translate([0, 0, -(H / 2) + DEPTH - 1.4]) m5_nut();
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} else if (BOLT == "M5" && TYPE == "socket") {
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translate([0, 0, -(H / 2) + DEPTH - 1.4]) m5_bolt();
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}
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//grips
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for(i = [0 : N]) {
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rotate([0, 0, i * (360 / N)]) {
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translate([D / 2.87, D / 2.87, 0]) {
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Right_Angled_Triangle(a = NOTCH, b = NOTCH, height = 22, centerXYZ=[true, true, true]);
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}
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}
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}
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//taper top
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translate([0, 0, H / 2 - 0.7]) difference () {
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cylinder(r = D / 2 + 2, h = 2, center = true, $fn = 360);
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cylinder(r1 = D / 2 + 1, r2 = D / 2 - 1, h = 2.01, center = true, $fn = 360);
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}
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//taper bottom
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translate([0, 0, -H / 2 + 0.7]) difference () {
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cylinder(r = D / 2 + 2, h = 2, center = true, $fn = 360);
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cylinder(r2 = D / 2 + 1, r1 = D / 2 - 1, h = 2.01, center = true, $fn = 360);
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}
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}
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}
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PART = "m4_hex_10h_14d";
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if (PART == "m4_hex_10h_14d") {
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knob(H = 10, D = 14, DEPTH = 4, BOLT = "M4", TYPE = "hex");
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} |