-// Threads for acorn model
-// Copyright (c) 2017 Clinton Ebadi <clinton@unknownlamer.org>
-
-use <threads.scad>
-use <screw_threads.scad>
-use <Paraboloid.scad>
-
-
-//outer_d = 178;
-thread_pitch = 2.0;
-thread_size = 1.5;
-outer_d = (26 - thread_size - 10)/2;
-base_d = outer_d / 3;
-thread_height = 4;
-wall_thickness = 3;
-base_height = 20;
-
-thread_tolerance = 0.6;
-thread_angle = 60;
-
-
-//cylinder (d = outer_d, h = 10);
-module acorn_thread (outer_d = outer_d, internal = false) {
- //outer_d = outer_d + (internal ? thread_tolerance : 0);
- outer_d = outer_d + thread_size;
- thread_height = thread_height; // + (internal ? thread_tolerance : 0);
- local_thread_size = thread_size; // + (internal ? thread_tolerance : 0);
-
-
-
- if (internal) {
- echo ("outer ring = ", outer_d+wall_thickness/2+local_thread_size);
- ScrewHole (outer_diam=outer_d, height = thread_height, pitch = thread_pitch, angle = thread_angle) {
- cylinder (d = outer_d+wall_thickness/2+thread_size, h = thread_height);
- }
- }
-
- //translate ([0, 0, internal ? -0.0 : 0]) metric_thread (diameter=outer_d, pitch = thread_pitch, thread_size=local_thread_size, length = thread_height, internal=internal, angle=thread_angle);
-
- if (!internal) {
- difference () {
- ScrewThread (outer_diam=outer_d, height = thread_height, pitch = thread_pitch, tooth_height = local_thread_size, angle = thread_angle);
- cylinder (d = outer_d-wall_thickness-local_thread_size-0.01, h = thread_height * 4, center=true);
- }
- }
-}
-
-
-module acorn_base_1 () {
- hull () {
-
- translate ([0, 0, base_height-base_d/2]) cylinder (d=outer_d, h=0.1);
- sphere (r = base_d);
- }
-}
-
-module acorn_base_xxx () {
- difference () {
- acorn_base_1 ();
- resize ([outer_d-wall_thickness, 0, 0], auto=true) acorn_base_1 ();
- translate ([0, 0, base_height-base_d/2-wall_thickness]) cylinder (d = outer_d - wall_thickness, h = 5);
- }
-}
-
-rfa = 2;
-real_outer_d = 4 * sqrt(outer_d/2)*sqrt(base_height/sqrt(outer_d/2)) + rfa*2;
-echo (real_outer_d);
-module nut_1 () {
- paraboloid (y=base_height, f=sqrt(outer_d/2),rfa=rfa,fc=0,detail=120, x = outer_d, hi=base_height);
-}
-
-module nut () {
- //cylinder(d=real_outer_d, h=base_height+1);
- difference () {
- nut_1 ();
- translate ([0, 0, wall_thickness]) resize ([real_outer_d - wall_thickness, 0, 0], auto=true) nut_1 ();
- }
-
- translate ([0, 0, base_height-0.1]) acorn_thread (outer_d = real_outer_d);//, $fa=0.1, $fs=0.1);
-
-}
-
-
-
-//$fs = 0.1;
-//$fa = 1;
-
-module nuts () {
-//translate ([real_outer_d+10, 0, 0,]) nut ();
-translate ([0, 0, thread_height]) rotate ([180, 0, 0]) acorn_thread (outer_d = real_outer_d, internal=true); //, outer_d=real_outer_d);
-
-}
-
-//print_test();
-nuts ();
-
-//fit_test ();
-
-module print_test () {
- translate ([real_outer_d+5, 0, thread_height]) rotate ([180, 0, 0]) acorn_thread (outer_d = real_outer_d, internal=true); //, outer_d=real_outer_d);
- translate ([0, 0, thread_height]) rotate ([180, 0, 0]) union () {
- translate ([0, 0, 0]) cylinder (d=real_outer_d-wall_thickness, h=thread_height);
- translate ([0, 0, -thread_height*3]) cylinder (d=real_outer_d/2, h=thread_height*3);
- acorn_thread (outer_d = real_outer_d);
- }
-
-
-}
-
-module fit_test () {
- intersection () {
- union () {
- color ("YellowGreen", 0.5) acorn_thread (outer_d = real_outer_d, internal=true);
- /* /\*translate ([0, 0, thread_height]) rotate ([180, 0, 0]) *\/ color ("Peru") union () { */
- /* translate ([0, 0, 0]) cylinder (d=real_outer_d-wall_thickness, h=thread_height); */
- /* translate ([0, 0, -thread_height*3]) cylinder (d=real_outer_d/2, h=thread_height*3); */
- /* acorn_thread (outer_d = real_outer_d); */
- /* } */
- }
- //color ("White", 0.5) cube (real_outer_d);
- }
-
-
-}
+// Threads for acorn model
+// Copyright (c) 2017 Clinton Ebadi <clinton@unknownlamer.org>
+
+use <screw_threads.scad> // http://www.thingiverse.com/thing:1686322
+
+thread_pitch = 3.0;
+thread_size = 2.5; //2.2; // 3.0
+thread_tooth_height = thread_pitch - 0.4;
+thread_height = 3.5; //4.0;
+wall_thickness = thread_size;
+base_height = 25;
+inner_d = 24.5;
+outer_d = inner_d + wall_thickness*2; //33;
+
+internal_thread_tolerance = 0.3;
+external_thread_tolerance = 0.2;
+thread_angle = 50;
+
+
+module acorn_thread (outer_d = outer_d, internal = false, ring = true) {
+ outer_d = outer_d;
+
+ if (internal) {
+ outer_ring_d = outer_d+max(thread_size, wall_thickness)+1;
+ echo ("outer ring = ", outer_ring_d);
+ ScrewHole (outer_diam=outer_d, height = thread_height, pitch = thread_pitch, tooth_height = thread_tooth_height, tooth_angle = thread_angle, tolerance=internal_thread_tolerance) {
+ if (ring) cylinder (d = outer_ring_d, h = thread_height);
+ }
+ }
+
+ if (!internal) {
+ difference () {
+ ScrewThread (outer_diam=outer_d, height = thread_height, pitch = thread_pitch, tooth_height = thread_tooth_height, tooth_angle = thread_angle, tolerance=external_thread_tolerance);
+ cylinder (d = outer_d-wall_thickness-thread_size-0.01, h = thread_height * 4, center=true);
+ }
+ }
+}
+
+
+module nut_body (h = base_height, d = outer_d, nub = true) {
+ translate ([0 ,0, h]) {
+ intersection () {
+ union () {
+ resize ([d, d, h*2]) sphere (d=h*2);
+ if (nub) {
+ translate ([0, d/2-wall_thickness/2, -thread_height]) sphere (d=wall_thickness*2, $fs = 0.1);
+ }
+ }
+ translate ([0 ,0, -h/2]) cube ([d*2, d*2, h], center=true);
+ }
+ }
+}
+
+module nut () {
+ difference () {
+ nut_body ();
+ translate ([0, 0, wall_thickness + 0.01]) nut_body (d=outer_d-wall_thickness*2, nub=false);
+ }
+
+ translate ([0, 0, base_height-0.1]) acorn_thread (outer_d = outer_d);
+}
+
+
+
+$fs = 1;
+$fa = 1;
+
+module cap_keychain (hole_d=3, spacing=15 /*12*/) {
+ h=100;
+ translate ([-spacing/2, 0, 0]) cylinder (d=hole_d, h=h, $fs=0.1);
+ translate ([spacing/2, 0, 0]) cylinder (d=hole_d, h=h, $fs=0.1);
+}
+
+module cap () {
+ scale_f = outer_d / 171;
+ difference () {
+ scale ([scale_f, scale_f, scale_f]) {
+ difference () {
+ union () {
+ translate ([0, 0, -1]) import ("Acorn_Unthreaded/cap_reduced.stl");
+ echo ("h = ", thread_height/scale_f);
+ cylinder (d = 180, h=thread_height/scale_f);
+ }
+ translate ([0, 0, -0.51]) cube ([200, 200, 1], center=true);
+ }
+ }
+ cap_keychain ();
+ acorn_thread (internal = true, ring = false);
+ }
+}
+
+module gasket (gasket_height=0.9) {
+ cylinder (d = outer_d, h = gasket_height, center=true);
+}
+
+module nuts () {
+//translate ([outer_d+10, 0, 0,]) nut ();
+//cap ();
+translate ([-(outer_d+10), 0, 0,]) gasket ();
+}
+
+nuts ();
+
+module print_test () {
+ translate ([outer_d+thread_size+5, 0, thread_height]) rotate ([180, 0, 0]) acorn_thread (outer_d = outer_d, internal=true);
+ translate ([0, 0, thread_height]) rotate ([180, 0, 0]) union () {
+ translate ([0, 0, 0]) cylinder (d=outer_d-wall_thickness, h=thread_height);
+ translate ([0, 0, -thread_height*3]) cylinder (d=outer_d/3, h=thread_height*3);
+ acorn_thread (outer_d = outer_d);
+ }
+
+
+}
HCoop / clinton / 3d-models.git / blobdiff