scad/pressfit_headband.scad

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2024-01-05 14:35:06 +01:00
$fn=360;
module inserticle() {
cube([4.6, 7.4, 5.4], center=true);
}
module testblock_inserticle() {
union() {
translate([0, 0, 5.4/2]) inserticle();
translate([0, 0, -5]) cube([15, 12, 10], center=true);
}
}
module testblock_recepticle() {
rotate(180, [0, 1, 0]) difference() {
translate([0, 0, 5]) cube([15, 12, 10], center=true);
translate([0, 0, 5.4/2]) inserticle();
}
}
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module catear(height, thickness, fractal=0, side_len=30, bend_factor=0.5, stretch_factor=1.2, debug=false) {
$A=[0, side_len/2];
$B=[0,-side_len/2];
$C=[-(side_len/2/sin(120))*1.5*stretch_factor, 0];
$c=sqrt(pow($A.x-$B.x, 2)+pow($A.y-$B.y, 2));
$b=sqrt(pow($A.x-$C.x, 2)+pow($A.y-$C.y, 2));
$a=sqrt(pow($C.x-$B.x, 2)+pow($C.y-$B.y, 2));
$hc=-$C.x;
$alpha=asin($hc/$b);
$beta=$alpha;
$gamma=180-$alpha-$beta;
$delta=180*bend_factor;
$bend_radius=$a/(2*cos(90-$delta/2));
$bend_offset=$bend_radius*sin(90-$delta/2);
translate([0, -$c/2, 0])
rotate($beta, [0, 0, 1])
translate([0, $a/2, 0])
translate([$bend_offset, 0, 0])
color("#00ffff") partial_ring(
part=$delta/360,
radius=$bend_radius,
thickness=thickness,
height=height
);
translate([0, $c/2, 0])
rotate(-$alpha, [0, 0, 1])
translate([0, -$b/2, 0])
translate([$bend_offset, 0, 0])
color("#ff00ff") partial_ring(
part=$delta/360,
radius=$bend_radius,
thickness=thickness,
height=height
);
translate($A) color("#aaaaaa") cylinder(h=height, d=thickness, center=true);
translate($B) color("#bbbbbb") cylinder(h=height, d=thickness, center=true);
translate($C) color("#cccccc") cylinder(h=height, d=thickness, center=true);
if (debug) {
echo("A", $A, "a", $a, "alpha", $alpha);
echo("B", $B, "b", $b, "beta ", $beta);
echo("C", $C, "c", $c, "gamma", $gamma);
echo("bend_factor", bend_factor);
echo("delta:", $delta);
echo("bend_radius", $bend_radius);
echo("bend_offset", $bend_offset);
color("#000000") cylinder(h=4, d=4);
translate($C/2) color("red") cube([$hc, thickness, height*1.1], center=true);
color("red") cube([thickness, $c, height*1.1], center=true);
color("red")translate([0, $c/2, 0]) rotate(-$alpha, [0, 0, 1]) translate([0, -$b/2, 0]) cube([thickness, $b, height*1.1], center=true);
color("red")translate([0, -$c/2, 0]) rotate($beta, [0, 0, 1]) translate([0, $a/2, 0]) cube([thickness, $a, height*1.1], center=true);
}
}
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module partial_ring(part, radius, thickness, height) {
rotate(180-180*part, [0, 0, 1])
rotate_extrude(angle=360*part)
translate([radius, 0])
square([thickness, height], center=true);
}
module headband(size=60, height=4.6, thickness=3, part=0.7, stretch_len=40, tip_len=0.1, tip_bend=20, rake_depth=1.5, rake_width=0.5, rake_stretch=2) {
union() {
color("purple") partial_ring(part, radius=size, thickness=thickness, height=height);
rotate( 90-180*part, [0, 0, 1]) translate([stretch_len/2, size, 0]) {
color("orange") cube([stretch_len, thickness, height], center=true);
color("purple") translate([stretch_len/2, tip_bend, 0])
rotate(90+180*tip_len, [0, 0, 1])
partial_ring(
part=tip_len,
radius=tip_bend,
thickness=thickness,
height=height
);
}
rotate(-90+180*part, [0, 0, 1]) translate([stretch_len/2, -size, 0]) {
color("orange") cube([stretch_len, thickness, height], center=true);
color("purple") scale([1, -1, 1]) translate([stretch_len/2, tip_bend, 0])
rotate(90+180*tip_len, [0, 0, 1])
partial_ring(
part=tip_len,
radius=tip_bend,
thickness=thickness,
height=height
);
}
for (i=[-size/2:size/2]) {
rotate(i*2-rake_width/2, [0, 0, 1]) intersection() {
scale([1, 1, rake_stretch/(rake_depth/height)])
rotate_extrude(angle=rake_width)
translate([rake_depth/2-size+thickness/2, 0, 0])
scale([1, 0.5, 1])
circle(r=rake_depth, $fn=3);
translate([rake_depth/2-size+thickness/2, 0, 0])
color("red")
cube([4*rake_depth, 4*rake_depth, height], center=true);
}
};
};
}
module pressfit_headband(size=60, height=4.6, thickness=3, part=0.7, stretch_len=40, tip_len=0.1, tip_bend=20, rake_depth=1.5, rake_width=0.5, rake_stretch=2) {
union() {
color("pink") { $a=48;
rotate( $a, [0, 0, 1]) {
translate([-size-4, 0,]) rotate(90, [0, 1, 0]) inserticle();
translate([-size-3, 0,]) rotate(90, [0, 1, 0]) inserticle();
}
rotate(-$a, [0, 0, 1]) {
translate([-size-4, 0,]) rotate(90, [0, 1, 0]) inserticle();
translate([-size-3, 0,]) rotate(90, [0, 1, 0]) inserticle();
}
}
headband(
size=size,
height=height,
thickness=thickness,
part=part,
stretch_len=stretch_len,
tip_len=tip_len,
tip_bend=tip_bend,
rake_depth=rake_depth,
rake_width=rake_width,
rake_stretch=rake_stretch
);
};
}
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module catear_headband(debug=false, size=60, height=4.6, thickness=3, part=0.7, stretch_len=40, tip_len=0.1, tip_bend=20, rake_depth=0.5, rake_width=0.5, rake_stretch=.5, ear_scale=1, ear_bend_factor=0.15, ear_stretch_factor=1.4, ear_angle=48) {
union() {
rotate( ear_angle, [0, 0, 1]) {
translate([-size, 0, 0]) catear(
debug=debug,
height=height,
thickness=thickness,
side_len=size/2*ear_scale,
bend_factor=ear_bend_factor,
stretch_factor=ear_stretch_factor
);
}
rotate(-ear_angle, [0, 0, 1]) {
translate([-size, 0, 0]) catear(
debug=false,
height=height,
thickness=thickness,
side_len=size/2*ear_scale,
bend_factor=ear_bend_factor,
stretch_factor=ear_stretch_factor
);
}
headband(
size=size,
height=height,
thickness=thickness,
part=part,
stretch_len=stretch_len,
tip_len=tip_len,
tip_bend=tip_bend,
rake_depth=rake_depth,
rake_width=rake_width,
rake_stretch=rake_stretch
);
};
}
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module bunnyear_headband(debug=false, size=60, height=4.6, thickness=3, part=0.7, stretch_len=40, tip_len=0.1, tip_bend=20, rake_depth=1, rake_width=0.5, rake_stretch=1, ear_scale=0.5, ear_bend_factor=0.2, ear_stretch_factor=10, ear_angle=30) {
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catear_headband(
debug=debug,
size=size,
height=height,
thickness=thickness,
part=part,
stretch_len=stretch_len,
tip_len=tip_len,
tip_bend=tip_bend,
rake_depth=rake_depth,
rake_width=rake_width,
rake_stretch=rake_stretch,
ear_scale=ear_scale,
ear_bend_factor=ear_bend_factor,
ear_stretch_factor=ear_stretch_factor,
ear_angle=ear_angle);
}
bunnyear_headband();