// -*- C -*- main_dia = 71.2 + 0.50 - 2.26; top_thick = 4; main_cnr = 4.0; rivet_posn = 6.0; rivet_thick = 1.67; rivet_width = 4.15 + 1.0; rivet_tall = 5.51 + 0.49; over_rivet_wall = 0.5; side_rivet_gap = 1.5; bayo_interf = 0.75; bayo_behind = 3.5; bayo_interf_width = 2.0; bayo_interf_slope = 0.75; oring_thick = 5.0; oring_bore = 62.0; oring_upper_embed_angle = 45; oring_compress = 0.1; // proportion side_taper = 1.0; bayo_above_gap = 1.0; bayo_entry = bayo_behind/3; bayo_slice_size = 1; brace_hole_width = 1.0; brace_above_below = 1.2; jig_thick = 1.4; jig_hole_dia = 3.0; jig_rim = 5; jig_mark = 5; // calculated bayo_entry_x = bayo_entry; bayo_entry_z = bayo_entry; bayo_inramp_x = bayo_entry; bayo_inramp_z = bayo_entry; oring_mid_dia = oring_bore + oring_thick; oring_outer_dia = oring_mid_dia + oring_thick; oring_oblate = (1 - oring_compress); oring_y_rad = oring_thick/2 * oring_oblate; oring_x_rad = oring_thick/2 / oring_oblate; seal_thick = oring_y_rad * (1 + cos(oring_upper_embed_angle)); side_height = rivet_posn + bayo_behind + rivet_thick/2; side_thick = rivet_tall + over_rivet_wall; top_z = top_thick + seal_thick; bayo_entry = bayo_behind / 3.0; bayo_top_z = bayo_behind + rivet_thick + bayo_above_gap; bayo_entry_ramp = bayo_entry + bayo_interf; rivet_entry_width = rivet_width + side_rivet_gap; jig_mark_rad = jig_mark + main_dia/2 + jig_thick; $fs=0.5; $fa=1; // bayonet definition bayo_a = [ bayo_entry_x, 0 ]; bayo_p = [ 0, bayo_entry_z ]; bayo_n = [ 0, bayo_behind-bayo_inramp_z ]; bayo_m = [ bayo_inramp_x, bayo_behind ]; bayo_l = bayo_m + bayo_interf * [ 1/bayo_interf_slope, 1 ]; bayo_k = bayo_l + [ bayo_interf_width, 0 ]; bayo_j = bayo_k + bayo_interf * [ 1/bayo_interf_slope, -1 ]; bayo_i = bayo_j + [ rivet_width, 0 ]; bayo_h = [ bayo_i[0], bayo_behind + rivet_thick + bayo_above_gap ]; bayo_g = [ bayo_m[0] - rivet_width, bayo_h[1] ]; bayo_e = [-bayo_p[0], bayo_p[1]] - [rivet_entry_width,0]; bayo_d = [-bayo_a[0], bayo_a[1]] - [rivet_entry_width,0]; bayo_c = bayo_d + [0,-5]; bayo_b = bayo_a + [0,-5]; bayo_f = [ bayo_e[0], bayo_g[1] + (bayo_e[0] - bayo_g[0]) ]; bayo_polygon = [ bayo_a, bayo_b, bayo_c, bayo_d, bayo_e, bayo_f, bayo_g, bayo_h, bayo_i, bayo_j, bayo_k, bayo_l, bayo_m, bayo_n, bayo_p ]; echo(bayo_polygon); module MainProfile(){ main_cnr_pos = [ side_thick, top_z ] - [1,1]*main_cnr; difference(){ union(){ translate(main_cnr_pos){ intersection(){ difference(){ circle(r = main_cnr); circle(r = main_cnr * 0.5); } square([10,10]); } } polygon([[ -11, seal_thick ], [ -11, top_z ], [ main_cnr_pos[0], top_z ], [ side_thick, main_cnr_pos[1] ], [ side_thick, -side_height ], [ side_taper, -side_height ], [ 0, -rivet_posn ], [ 0, seal_thick ], ], convexity=10); } %translate([ oring_mid_dia/2 - main_dia/2, oring_y_rad ]) scale([ 1/oring_oblate, oring_oblate ]) circle(oring_thick/2); } } module RotateProjectSlice(offset, slice_size, nom_rad, real_rad){ // nom_rad > real_rad rotate([0,0, atan2(offset, nom_rad) ]){ intersection(){ translate([-offset, -10, 0]) rotate([90,0,0]) linear_extrude(height= nom_rad*2) children(0); translate([0,0, -25]) cylinder(h=50, r= real_rad); translate([0,0, -25]) linear_extrude(height= 50) polygon([ [ 0,0 ], [ -slice_size, -real_rad*2 ], [ +slice_size, -real_rad*2 ] ]); } } } module RotateProject(x_min, x_max, slice_size, nom_rad, real_rad){ offs = [ for (i=[ x_min : slice_size : x_max + slice_size ]) i ]; echo (offs); for (off=offs) RotateProjectSlice(off, slice_size, nom_rad, real_rad) children(0); } module BayonetCutout(){ RotateProject(bayo_c[0], bayo_i[0], bayo_slice_size, main_dia/2 + side_thick, main_dia/2 + rivet_tall) polygon(bayo_polygon, convexity=10); } module ProfilesDemo(){ ////toplevel translate([-20,0]) MainProfile(); polygon(bayo_polygon, convexity=10); } module Cover(){ ////toplevel render() difference(){ union(){ rotate_extrude(convexity=10) translate([main_dia/2, 0]) MainProfile(); translate([0,0, seal_thick]) cylinder(h= top_thick, r = main_dia/2 - 10); } for (r=[0,180]) rotate([0,0, r]) translate([0,0, -side_height]) BayonetCutout(); for (r=[0 : 60 : 179]) { rotate([0,0, r]) { height = top_thick - brace_above_below*2; translate([0,0, seal_thick + brace_above_below + height/2 ]) cube(center=true, [ main_dia, brace_hole_width, height ]); } } } } module SavingHole(){ translate([0,0, -10]) cylinder(r= main_dia/2 - jig_rim, h=20); } module Jig(){ ////toplevel difference(){ union(){ translate([0,0, -side_height]){ cylinder(r= main_dia/2 + jig_thick, h= side_height + jig_thick); } translate([-jig_mark_rad, 0, jig_thick - jig_mark]) cube([jig_mark_rad*2, jig_mark, jig_mark]); } translate([0,0, -side_height-1]) cylinder(r= main_dia/2, h= side_height + 1); SavingHole(); translate([0,0, -rivet_posn]) rotate([90, 0,0]) translate([0,0, -100]) cylinder(r= jig_hole_dia/2, h = 200); } } module CoverTest2(){ ////toplevel difference(){ Cover(); SavingHole(); } } module CoverTest1(){ ////toplevel difference(){ CoverTest2(); translate([0,0, -10]) cube([ main_dia*3, main_dia * .85, 20], center=true); } } //ProfilesDemo(); //BayonetCutout(); //MainProfile(); //Cover(); //Jig(); //CoverTest();