82 lines
2.5 KiB
OpenSCAD
82 lines
2.5 KiB
OpenSCAD
spool_tape_tolerance=1;
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spool_inner_radius=4;
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spool_outer_radius=18;
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spool_plate_height=2;
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spool_plate_holes=3;
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spool_plate_hole_angle=360/spool_plate_holes * 0.5;
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spool_plate_hole_inner_rim=1;
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spool_plate_hole_outer_rim=4;
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spindle_diam_tolerance=0.2;
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// dependency: https://github.com/revarbat/BOSL
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use <BOSL/transforms.scad>
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module spindle(d, h, traction=false) {
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color("Sienna") cylinder(h=h, d=d, $fn=(traction ? 6 : 20));
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}
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module spool(
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r_in, r_out,
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in_rim=1, out_rim=4,
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in_height=5, plate_height=1,
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center=false, slit_depth=0.5,
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spindle_diam=3, spindle_diam_tolerance=0.1, spindle_traction=false,
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spokes=3
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) {
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height = plate_height*2 + in_height;
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tape_height=in_height;
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module spool_plate() {
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$fn = ($preview ? 18 : 100);
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if (/*!$preview &&*/ spokes > 0 && r_out - r_in > out_rim) {
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union() {
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cylinder(h=plate_height, r=r_in + in_rim);
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intersection() {
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cylinder(h=plate_height, r=r_out - out_rim);
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for (i = [1:spokes]) {
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zrot(360/spokes * i) {
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right(r_out/2) up(plate_height/2)
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cube([r_out, r_in, plate_height], center=true);
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}
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}
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}
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difference() {
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cylinder(h=plate_height, r=r_out);
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cylinder(h=plate_height, r=r_out - out_rim);
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}
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}
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} else {
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cylinder(h=plate_height, r=r_out);
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}
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}
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module spool_inner() {
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$fn = ($preview ? 10 : 60);
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cylinder(h=in_height, r=r_in);
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}
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down(center ? height/2 : 0)
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difference() {
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color("Azure") {
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spool_plate();
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up(plate_height) spool_inner();
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up(plate_height + in_height) spool_plate();
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}
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if (slit_depth > 0) {
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up(plate_height + in_height/2) cube([r_in*2, slit_depth, in_height], center=true);
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}
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down(height) scale(1 + spindle_diam_tolerance/spindle_diam) spindle(d=spindle_diam+spindle_diam_tolerance, h=height*3, traction=spindle_traction);
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}
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}
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module spool_spindle() {
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spindle_h=height-plate;
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spindle(d=spindle_diam, h=spindle_h);
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}
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// test
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spindle_diam=2;
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tape_height=5;
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traction=true;
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spool(r_in=4, r_out=20, in_height=tape_height, spindle_diam=spindle_diam, spindle_traction=traction);
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down(3) spindle(d=spindle_diam, h=tape_height + 8, traction=traction); |