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Extracted and polished tape spool

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This commit is contained in:
Dejvino 2020-12-24 13:49:32 +01:00
parent 171eff19e0
commit 6908a1441e
2 changed files with 90 additions and 40 deletions
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48
holodisk.scad
View File

@ -7,6 +7,7 @@ use <holodisk_spec.scad>
use <anim.scad>
include <tape.scad>
use <tape_spool.scad>
disk_size = get_holodisk_size();
holodisk_size = get_holodisk_size();
@ -235,7 +236,7 @@ module frame(size) {
module laserwindow_slider_cover() {
cover_size=[
get_holodisk_laserwindow_size().x,
rails_size.y + overlap*2,
get_holodisk_slide_slider_size().x,
get_holodisk_slide_slider_size().z
];
cover_plate=[cover_size.x, rail_size.y, cover_size.z];
@ -247,7 +248,7 @@ module frame(size) {
translate(cover_pos)
hull() {
fwd(cover_plate.y) cube(cover_plate);
fwd(cover_top.y) up((cover_plate.z-cover_top.z)/2) cube(cover_top);
right(overlap/2) fwd(cover_top.y) up((cover_plate.z-cover_top.z)/2) cube(cover_top);
}
}
@ -270,52 +271,19 @@ module mechanism(size) {
depth=size.y;
height=size.z;
module spool(r_in, r_out, in_rim, out_rim) {
module spindle(d, h) {
color("Sienna") cylinder(h=h, d=d);
}
module spool_plate() {
difference() {
cylinder(h=spool_plate_height, r=r_out);
if (!$preview && r_out - r_in > out_rim) {
angle=spool_plate_hole_angle;
difference() {
for (i = [1:spool_plate_holes]) {
zrot(360/spool_plate_holes * i) {
angle_pie_mask(r=r_out - out_rim, l=spool_plate_height, ang=angle, center=false);
}
}
cylinder(h=spool_plate_height, r=r_in + in_rim);
}
}
}
}
spindle_h=height-plate;
difference() {
color("Azure") {
spool_plate();
up(spool_plate_height) cylinder(h=spool_inner_height, r=r_in);
up(spool_plate_height + spool_inner_height) spool_plate();
}
up(spool_plate_height + spool_inner_height/2) cube([r_in*2, spool_slit_depth, spool_inner_height], center=true);
// TODO: spindle height
spindle(d=spindle_diam+spindle_diam_tolerance, h=spindle_h);
}
spindle(d=spindle_diam, h=spindle_h);
}
module main_spool() {
spool(r_in=spool_inner_radius,
r_out=spool_outer_radius,
in_rim=spool_plate_hole_inner_rim,
out_rim=spool_plate_hole_outer_rim);
out_rim=spool_plate_hole_outer_rim,
in_height=spool_inner_height);
}
module aux_spool() {
spool(r_in=middle_spool_in_r, r_out=middle_spool_out_r,
in_rim=aux_spool_plate_hole_inner_rim,
out_rim=aux_spool_plate_hole_outer_rim);
out_rim=aux_spool_plate_hole_outer_rim,
in_height=spool_inner_height,
spokes=4);
}
module spools() {

82
tape_spool.scad Normal file
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@ -0,0 +1,82 @@
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);