sixteenmillimeter-tools/models/16mm_looper/16mm_looper.scad

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2018-11-03 07:19:14 +00:00
PLATTER_D = 254;
PLATTER_THICKNESS = 3.25;
//bearing holder
BH_D = 115.85;
BH_H = 16 - 3.84;
//bearing
BEARING_D = 28.75;
BEARING_ID = 12.8;
BEARING_H = 8;
//alt bearings
//BEARING_D = 20;
//BEARING_ID = 8;
//BEARING_H = 8;
//bolt placement
BOLT_D = 5;
BOLT_W = 80.4;
BOLT_HEAD_D = 6.36;
BOLT_HEAD_H = 5;
BOLT_HEX = 8.1;
BOLT_HEX_H = 3.25;
HANDLE_MOUNT_L = 305;
HANDLE_MOUNT_W = 40;
HANDLE_MOUNT_THICKNESS = 6;
HANDLE_MOUNT_BOLT_L = 285;
HANDLE_MOUNT_BOLT_D = 5;
module hexagon(size, height) {
boxWidth = size/1.75;
for (r = [-60, 0, 60]) rotate([0,0,r]) cube([boxWidth, size, height], true);
}
module bolt_voids () {
$fn = 100;
for (i = [0 : 4]) {
rotate([0, 0, i * (360 / 4)]) translate([BOLT_W / 2, 0, 0]) cylinder(r = BOLT_D / 2, h = 50, center = true);
}
}
module bolt_head_voids () {
for (i = [0 : 2]) {
rotate([0, 0, i * (360 / 2)]) {
translate([BOLT_W / 2, 0, (BH_H / 2) - BOLT_HEAD_H / 2 + 0.01]) {
cylinder(r = BOLT_HEAD_D / 2, h = BOLT_HEAD_H, center = true);
}
}
}
}
module bolt_hex_voids () {
rotate([0, 0, 90]) for (i = [0 : 2]) {
rotate([0, 0, i * (360 / 2)]) {
translate([BOLT_W / 2, 0, (BH_H / 2) - (BOLT_HEX_H / 2) + 0.01]) {
hexagon(BOLT_HEX, BOLT_HEX_H);
}
}
}
}
module platter () {
difference () {
//main shape
cylinder(r = PLATTER_D / 2, h = PLATTER_THICKNESS, $fn = 360);
bolt_voids();
cylinder(r = (BEARING_ID - 4) / 2, h = 50, center = true, $fn = 60);
}
}
module bearing_holder () {
$fn = 100;
difference () {
//main shape
cylinder(r = BH_D / 2, h = BH_H, $fn = 360, center = true);
//bolts
bolt_voids();
bolt_head_voids();
bolt_hex_voids();
//inner void
cylinder(r = BEARING_ID / 2, h = 50, center = true, $fn = 60);
//bearing void
translate([0, 0, -(BH_H / 2) + (BEARING_H / 2) - 0.1]) {
cylinder(r = BEARING_D / 2, h = BEARING_H, center = true);
}
}
}
module bearing_holder_test () {
translate([0, 0, (PLATTER_THICKNESS / 2) + (BH_H / 2)]) {
intersection() {
bearing_holder();
translate([BH_D / 4 - 10, BH_D / 4 - 10, 0]) cube([BH_D / 2 + 20, BH_D / 2 + 20, BH_H + 2], center = true);
}
}
}
module handle_mount () {
difference() {
cube([HANDLE_MOUNT_W, HANDLE_MOUNT_L, HANDLE_MOUNT_THICKNESS], center = true);
translate ([0, HANDLE_MOUNT_BOLT_L / 2, 0]) {
cylinder(r = HANDLE_MOUNT_BOLT_D / 2, h = 10, center = true, $fn = 50);
}
translate ([0, -HANDLE_MOUNT_BOLT_L / 2, 0]) {
cylinder(r = HANDLE_MOUNT_BOLT_D / 2, h = 10, center = true, $fn = 50);
}
cylinder(r = HANDLE_MOUNT_BOLT_D / 2, h = 10, center = true, $fn = 50);
}
}
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platter();
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//projection() platter();
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translate([0, 0, 10]) bearing_holder();
bolt_hex_voids();
translate([0, 0, -10])handle_mount();