91 lines
2.0 KiB
OpenSCAD
91 lines
2.0 KiB
OpenSCAD
time = 0;
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include <../../libraries/threads.scad>;
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//RESOLUTION
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FINE = 200;
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module base ( HEX = false) {
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D = 8.45 * 2;
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H = 20;
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//for grip
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BUMP = 2; //diameter
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BUMPS = 6;
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TOP_D = 19;
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TOP_H = 9.5;
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TOP_OFFSET = -24.5;
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union() {
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translate([0, 0, -15]) {
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cylinder(r = D / 2, h = H, center = true, $fn = FINE);
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}
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//hex version
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if (HEX) {
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translate([0, 0, TOP_OFFSET]) {
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cylinder(r = 11.1, h = TOP_H, center = true, $fn = 6);
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}
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} else {
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translate([0, 0, TOP_OFFSET]) {
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cylinder(r = TOP_D / 2, h = TOP_H, center = true, $fn = FINE);
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}
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}
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for (i = [0 : BUMPS]) {
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rotate([0, 0, (360 / BUMPS) * i]) {
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translate([0, 8.9, TOP_OFFSET]) {
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cylinder(r = BUMP, h = TOP_H, center = true, $fn = 60);
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}
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}
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}
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}
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}
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module outer_screw (LEN) {
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OD = 10;
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PITCH = 1.5;
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THREAD = 1.6;
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difference () {
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translate([0, 0, -7.1]) metric_thread (diameter=OD, pitch=PITCH, thread_size = THREAD, length=LEN);
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//bevel top of screw
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translate([0, 0, LEN - 8]) difference() {
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cylinder(r = 8, h = 3, center = true, $fn = FINE);
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cylinder(r1 = 6, r2 = 3, h = 3.01, center = true, $fn = FINE);
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}
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}
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}
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module lomo_spindle_bottom (ALT = false, HEX = false) {
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OD = 13.6 + .5;
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PITCH = 1.5;
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THREAD = 1.6;
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IN_LEN = 21;
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LEN = 17.1;
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ALT_LEN = 27.1;
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difference () {
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base(HEX);
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//inner screw negative
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translate([0, 0, -30]) union() {
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metric_thread (diameter=OD, pitch=PITCH, thread_size = THREAD, length = IN_LEN);
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translate([0, 0, 0.2]) {
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metric_thread (diameter=OD, pitch=PITCH, thread_size = THREAD, length = IN_LEN);
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}
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}
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}
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difference () {
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//outer screw
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if (ALT) {
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outer_screw(ALT_LEN);
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} else {
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outer_screw(LEN);
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}
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//hollow center
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cylinder(r = 3.8 / 2, h = 100, center = true, $fn = 60);
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}
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}
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translate([0, 0, 29]) rotate([0, 0, time]) lomo_spindle_bottom();
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