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