Improve linked strap parametrization
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@ -1,4 +1,5 @@
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links_count=14;
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links_count=6;
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include_terminal=true;
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//validation=1;
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//validation=1;
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VALIDATE_INTERSECTION=1;
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VALIDATE_INTERSECTION=1;
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@ -12,6 +13,10 @@ include <BOSL/constants.scad>
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function get_link_segment_size() = [15, 30, 5];
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function get_link_segment_size() = [15, 30, 5];
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function get_link_pin_diameter() = 2;
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function get_link_pin_diameter() = 2;
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function get_link_socket_slack() = [1, 4, 1];
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function get_link_socket_slack() = [1, 4, 1];
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function get_link_joiner_arm_size() = [get_link_segment_size().x - 2, 3, segment_size.z];
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function get_link_socket_size() = [get_link_segment_size().z,
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get_link_segment_size().y - get_link_joiner_arm_size().y*2,
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get_link_segment_size().z];
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echo("===============================");
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echo("===============================");
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echo(str("Strap length: ", (links_count * get_link_segment_size().x), " mm"));
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echo(str("Strap length: ", (links_count * get_link_segment_size().x), " mm"));
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@ -20,7 +25,7 @@ echo("===============================");
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assert(get_link_segment_size().x >= 10, "Link segment is too short.");
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assert(get_link_segment_size().x >= 10, "Link segment is too short.");
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assert(get_link_segment_size().z >= (get_link_pin_diameter() + get_link_socket_slack().z + 1), "Link segment is too thin.");
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assert(get_link_segment_size().z >= (get_link_pin_diameter() + get_link_socket_slack().z + 1), "Link segment is too thin.");
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module link() {
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module link(terminal=false) {
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segment_size=get_link_segment_size();
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segment_size=get_link_segment_size();
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module pin() {
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module pin() {
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h=segment_size.y;
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h=segment_size.y;
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@ -45,7 +50,7 @@ module link() {
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}
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}
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module joiner() {
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module joiner() {
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gap=2;
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gap=2;
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arm_size=[8, 3, segment_size.z];
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arm_size=get_link_joiner_arm_size();
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module arm() {
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module arm() {
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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);
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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);
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}
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}
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@ -56,11 +61,11 @@ module link() {
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scale([1, -1, 1]) arm();
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scale([1, -1, 1]) arm();
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}
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}
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module armJoiner() {
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module armJoiner() {
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joiner_size=[arm_size.x*0.48, segment_size.y, segment_size.z];
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joiner_size=[arm_size.x-get_link_socket_size().x, segment_size.y, segment_size.z];
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right(joiner_size.x + 1) cuboid(joiner_size, fillet=1, edges=EDGES_Z_ALL + EDGES_BOTTOM);
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right(joiner_size.x/2 + get_link_socket_size().x/2 + gap) cuboid(joiner_size, fillet=1, edges=EDGES_Z_ALL + EDGES_BOTTOM);
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}
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}
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module socketJoiner() {
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module socketJoiner() {
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joiner_size=[segment_size.x-4,
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joiner_size=[segment_size.x-get_link_socket_size().x+get_link_socket_size().x*0.2,
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segment_size.y-4,
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segment_size.y-4,
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segment_size.z];
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segment_size.z];
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difference() {
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difference() {
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@ -68,15 +73,32 @@ module link() {
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right(segment_size.x) scale([1, 2, 1]) pin_socket_area();
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right(segment_size.x) scale([1, 2, 1]) pin_socket_area();
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}
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}
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}
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}
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socketJoiner();
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module terminalArm() {
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left(5) {
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shift=arm_size.x - get_link_pin_diameter();
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right(segment_size.x + shift + gap/2) pin();
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right(segment_size.x + gap/2) {
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armFront();
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armBack();
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}
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right(arm_size.x - get_link_socket_size().x + gap) armJoiner();
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}
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}
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armFront();
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armFront();
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armBack();
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armBack();
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armJoiner();
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armJoiner();
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if (terminal) {
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terminalArm();
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} else {
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socketJoiner();
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}
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}
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}
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pin();
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pin();
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right(segment_size.x) pin_socket();
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joiner();
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joiner();
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if (!terminal) {
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right(segment_size.x) pin_socket();
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}
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}
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}
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segment_size=get_link_segment_size();
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segment_size=get_link_segment_size();
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@ -100,7 +122,8 @@ if (!is_undef(validation)) {
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}
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}
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} else {
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} else {
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for (i = [0:links_count-1]) {
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for (i = [0:links_count-1]) {
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right(i*segment_size.x) link();
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terminal=(i==links_count-1) && include_terminal;
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right(i*segment_size.x) link(terminal=terminal);
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}
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}
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}
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}
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