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Improved link strap interoperability

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Dejvino 2021-01-19 14:47:16 +01:00
parent b85aee5fe1
commit f17455be4f
1 changed files with 76 additions and 68 deletions
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144
strap_link.scad
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@ -1,6 +1,6 @@
links_count=6; // [1..20] links_count=3; // [1..20]
include_terminal=true; // [true,false] include_terminal=true; // [true,false]
export=3; // [0:6] export=0; // [0:6]
MODEL_DEMO=0; MODEL_DEMO=0;
MODEL_LINKS=1; MODEL_LINKS=1;
@ -33,6 +33,7 @@ function get_link_socket_size() = [get_link_segment_size().z,
get_link_segment_size().z]; get_link_segment_size().z];
function get_link_clip_size() = [get_link_pin_diameter()*5, get_link_segment_size().y - 5, get_link_segment_size().z]; function get_link_clip_size() = [get_link_pin_diameter()*5, get_link_segment_size().y - 5, get_link_segment_size().z];
function get_link_socket_roundgap() = 2;
echo("==============================="); echo("===============================");
echo(str("Strap length: ", (links_count * get_link_segment_size().x), " mm")); echo(str("Strap length: ", (links_count * get_link_segment_size().x), " mm"));
@ -41,46 +42,68 @@ echo("===============================");
assert(get_link_segment_size().x >= 10, "Link segment is too short."); assert(get_link_segment_size().x >= 10, "Link segment is too short.");
assert(get_link_segment_size().z >= (get_link_pin_diameter() + get_link_socket_slack().z + 1), "Link segment is too thin."); assert(get_link_segment_size().z >= (get_link_pin_diameter() + get_link_socket_slack().z + 1), "Link segment is too thin.");
module link(terminal=false) { module pin() {
segment_size=get_link_segment_size(); segment_size=get_link_segment_size();
module pin() { h=segment_size.y;
h=segment_size.y; d=get_link_pin_diameter();
d=get_link_pin_diameter(); back(h/2) xrot(90) cylinder(h=h, d=d, $fn=$preview ? 10 : 30);
back(h/2) xrot(90) cylinder(h=h, d=d, $fn=$preview ? 10 : 30); }
module pin_socket_area() {
segment_size=get_link_segment_size();
h=segment_size.y-get_link_socket_slack().y;
d=segment_size.z;
back(h/2) xrot(90) cylinder(h=h, d=d, $fn=$preview ? 10 : 30);
}
module pin_socket() {
difference() {
pin_socket_area();
scaleup = [
((get_link_pin_diameter() + get_link_socket_slack().x) / get_link_pin_diameter()),
((get_link_pin_diameter() + get_link_socket_slack().y) / get_link_pin_diameter()),
((get_link_pin_diameter() + get_link_socket_slack().z) / get_link_pin_diameter())
];
scale(scaleup) pin();
} }
module pin_socket_area() { }
h=segment_size.y-get_link_socket_slack().y;
d=segment_size.z; module arm() {
back(h/2) xrot(90) cylinder(h=h, d=d, $fn=$preview ? 10 : 30); arm_size=get_link_joiner_arm_size();
} fwd(segment_size.y/2 + arm_size.y/2 - 1) right(arm_size.x/2 - 1) cuboid(arm_size, fillet=1, edges=EDGES_FRONT + EDGES_Y_ALL);
module pin_socket() { }
difference() { module armFront() {
pin_socket_area(); arm();
scaleup = [ }
((get_link_pin_diameter() + get_link_socket_slack().x) / get_link_pin_diameter()), module armBack() {
((get_link_pin_diameter() + get_link_socket_slack().y) / get_link_pin_diameter()), scale([1, -1, 1]) arm();
((get_link_pin_diameter() + get_link_socket_slack().z) / get_link_pin_diameter()) }
]; module armJoiner() {
scale(scaleup) pin(); gap=get_link_socket_roundgap();
} arm_size=get_link_joiner_arm_size();
} joiner_size=[arm_size.x-get_link_socket_size().x, segment_size.y, segment_size.z];
module joiner() { right(joiner_size.x/2 + get_link_socket_size().x/2 + gap) cuboid(joiner_size, fillet=1, edges=EDGES_Z_ALL + EDGES_BOTTOM);
gap=2; }
module link_arms() {
armFront();
armBack();
armJoiner();
}
module link_connector_pin() {
pin();
link_arms();
}
module link_connector_socket() {
pin_socket();
}
module link(terminal=false) {
module link_joiner() {
gap=get_link_socket_roundgap();
arm_size=get_link_joiner_arm_size(); arm_size=get_link_joiner_arm_size();
module arm() {
fwd(segment_size.y/2 + arm_size.y/2 - 1) right(arm_size.x/2 - 1) cuboid(arm_size, fillet=1, edges=EDGES_FRONT + EDGES_Y_ALL); module pin_to_socket_joiner() {
}
module armFront() {
arm();
}
module armBack() {
scale([1, -1, 1]) arm();
}
module armJoiner() {
joiner_size=[arm_size.x-get_link_socket_size().x, segment_size.y, segment_size.z];
right(joiner_size.x/2 + get_link_socket_size().x/2 + gap) cuboid(joiner_size, fillet=1, edges=EDGES_Z_ALL + EDGES_BOTTOM);
}
module socketJoiner() {
joiner_size=[segment_size.x-get_link_socket_size().x+get_link_socket_size().x*0.2, joiner_size=[segment_size.x-get_link_socket_size().x+get_link_socket_size().x*0.2,
segment_size.y-4, segment_size.y-4,
segment_size.z]; segment_size.z];
@ -89,31 +112,16 @@ module link(terminal=false) {
right(segment_size.x) scale([1, 2, 1]) pin_socket_area(); right(segment_size.x) scale([1, 2, 1]) pin_socket_area();
} }
} }
module terminalArm() {
left(5) { pin_to_socket_joiner();
shift=arm_size.x - get_link_pin_diameter();
right(segment_size.x + shift + gap/2) pin();
right(segment_size.x + gap/2) {
armFront();
armBack();
}
right(arm_size.x - get_link_socket_size().x + gap) armJoiner();
}
}
armFront();
armBack();
armJoiner();
if (terminal) {
terminalArm();
} else {
socketJoiner();
}
} }
pin(); link_connector_pin();
joiner(); if (terminal) {
if (!terminal) { right(segment_size.x + 2) zrot(180) link_connector_pin();
right(segment_size.x) pin_socket(); } else {
link_joiner();
right(segment_size.x) link_connector_socket();
} }
} }
@ -141,7 +149,7 @@ module clip() {
module joiner(groove) { module joiner(groove) {
slack=groove?0.5:0; slack=groove?0.5:0;
joiner_size=[entry_size.x-6+slack, entry_size.y-6+slack, entry_size.z-4+slack]; joiner_size=[entry_size.x-6+slack, entry_size.y-6+slack, entry_size.z-4+slack];
joiner_pos=[entry_pos.x, entry_pos.y, entry_pos.z - entry_size.z/2]; joiner_pos=[entry_pos.x, entry_pos.y, entry_pos.z - entry_size.z/2 + joiner_size.z/2];
translate(joiner_pos) cube(joiner_size, center=true); translate(joiner_pos) cube(joiner_size, center=true);
} }
@ -175,7 +183,7 @@ module clip() {
} }
} }
module clip_ratcheting(ratchet_length=30) { module clip_ratcheting(ratchet_length=28) {
socket_size=get_link_socket_size(); socket_size=get_link_socket_size();
clip_size=get_link_clip_size(); clip_size=get_link_clip_size();
pin_diam=get_link_pin_diameter(); pin_diam=get_link_pin_diameter();
@ -195,10 +203,10 @@ module clip_ratcheting(ratchet_length=30) {
} }
} }
module hookRight() { module hookRight() {
hook(); right(12.5) zrot(180) link_connector_pin();
} }
module hookLeft() { module hookLeft() {
scale([-1, 1, 1]) hook(); left(12.5) link_connector_pin();
} }
wall=2; wall=2;
tooth_size=[4, 3, 3]; tooth_size=[4, 3, 3];
@ -296,7 +304,7 @@ module clip_ratcheting(ratchet_length=30) {
railBack(); railBack();
} }
if (is_model(MODEL_CLIP_RATCHETING_A) || is_model(MODEL_CLIP_RATCHETING)) { left(2) if (is_model(MODEL_CLIP_RATCHETING_A) || is_model(MODEL_CLIP_RATCHETING)) {
left(ratchet_length + wall + 1) { left(ratchet_length + wall + 1) {
hookLeft(); hookLeft();
left(0.1) { left(0.1) {
@ -335,7 +343,7 @@ if (!is_undef(validation)) {
left(get_link_clip_size().x) clip(); left(get_link_clip_size().x) clip();
} }
if (is_model(MODEL_CLIP_RATCHETING) || is_model(MODEL_CLIP_RATCHETING_A) || is_model(MODEL_CLIP_RATCHETING_B)) { if (is_model(MODEL_CLIP_RATCHETING) || is_model(MODEL_CLIP_RATCHETING_A) || is_model(MODEL_CLIP_RATCHETING_B)) {
left(get_link_clip_size().x) clip_ratcheting(); left(get_link_clip_size().x * 2 + 3) clip_ratcheting();
} }
if (is_model(MODEL_LINKS)) for (i = [0:links_count-1]) { if (is_model(MODEL_LINKS)) for (i = [0:links_count-1]) {
terminal=(i==links_count-1) && include_terminal; terminal=(i==links_count-1) && include_terminal;