111 lines
3.0 KiB
OpenSCAD
111 lines
3.0 KiB
OpenSCAD
include <./common/common.scad>;
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SprocketBaseD = 19.05; //8 frames
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SprocketBaseH = 2.7;
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FrameC = (SprocketBaseD * PI) / 8;
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SprocketH = 10;
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SprocketW = 1;
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SprocketL = 1.5;
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InnerH = 10.6;
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TopBaseD = 18.47;
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TopBaseC = (TopBaseD * PI) / 8;
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TopBaseH = 2.96;
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LipD = 18.84;
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LipH = 0.33;
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LipC = (LipD * PI) / 8;
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TopD = 21.66;
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TopC = (TopD * PI) / 8;
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TopH = 1.4;
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echo(FrameC);
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$fn = 100;
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module sprocket (pos = [0, 0, 0], rot = [0, 0, 0], bevel = false) {
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translate (pos) rotate(rot) {
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difference () {
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translate([0, 0, 0]) scale([1, 1, 2.25]) rotate([90, 0, 90]) cylinder(r = SprocketW/2, h = SprocketL, center = true);
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translate([0, 0, -1]) cube([2, 2, 2], center = true);
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if (bevel) {
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translate([1.5, 0, 0]) rotate([0, -5, 0]) cube([2, 2, 3], center = true);
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translate([-1.5, 0, 0]) rotate([0, 5, 0]) cube([2, 2, 3], center = true);
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}
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}
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}
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}
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module sprocketed_roller_body (sprockets = 8, pos = [0, 0, 0], rot = [0, 0, 0], bevel = false) {
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D = (FrameC * sprockets) / PI;
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LipD = (LipC * sprockets) / PI;
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TopD = (TopC * sprockets) / PI;
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TopBaseD = (TopBaseC * sprockets) / PI;
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InnerD = D - 5.07;
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echo("D", D);
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echo("LipD", LipD);
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echo("InnerD", InnerD);
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translate(pos) rotate(rot) {
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//top
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cylinder(r = R(D), h = SprocketBaseH, center = true);
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//center
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translate([0, 0, (InnerH / 2) + (SprocketBaseH / 2)]) {
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cylinder(r = R(InnerD), h = InnerH, center = true);
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}
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//lip
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translate([0, 0, (TopBaseH / 2) + InnerH + (SprocketBaseH / 2) - (TopBaseH / 2) + (LipH / 2)]) {
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cylinder(r = R(LipD), h = LipH, center = true);
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}
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//bottom
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translate([0, 0, (TopH / 2) + (TopBaseH / 2) + InnerH + (SprocketBaseH / 2) + (TopBaseH / 2) - (LipH / 2)]) {
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cylinder(r = R(TopD), h = TopH, center = true);
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}
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//bottom base
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translate([0, 0, (TopBaseH / 2) + InnerH + (SprocketBaseH / 2)]) {
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cylinder(r = R(TopBaseD), h = TopBaseH, center = true);
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}
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for (i = [0: sprockets]) {
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rotate([0, 0, i * 360 / sprockets]) sprocket([(D / 2) - .01, 0, (SprocketBaseH / 2) - (SprocketL / 2)], [0, 90, 0], bevel);
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}
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}
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}
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module sprocketed_roller (sprockets = 8, pos = [0, 0, 0], rot = [0, 0, 0], bevel = false) {
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difference () {
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union () {
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sprocketed_roller_body(sprockets, pos, rot, bevel);
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//translate(pos) rotate(rot) addition();
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}
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//translate(pos) rotate(rot) void();
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}
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}
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module bearing_laser (x, y, z, width= 8, hole = true) {
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innerD = 8.05;
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outerD = 22.1 - .4;
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fuzz = 0.3;
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translate ([x, y, z]) {
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difference () {
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cylinder(r = (outerD / 2) + fuzz, h = width, center = true);
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if (hole) {
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cylinder(r = innerD / 2 - fuzz, h = width, center = true);
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}
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}
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}
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}
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sprocketed_roller(sprockets = 24, bevel = true); |