3 main_dia = 71.2 + 0.50 - 2.26;
4 top_minthick_middle = 4;
5 top_minthick_by_oring = 2.5;
12 rivet_width = 4.15 + 1.0;
13 rivet_tall = 5.51 + 0.49;
15 over_rivet_wall = 0.5;
20 bayo_interf_width = 2.0;
21 bayo_interf_slope = 0.75;
26 oring_upper_embed_angle = 80;
27 oring_compress = 0.1; // proportion
33 bayo_entry = bayo_behind/3;
37 brace_hole_width = 1.0;
38 brace_above_below = 1.2;
39 brace_end_shorter = 0.3;
48 bayo_entry_x = bayo_entry;
49 bayo_entry_z = bayo_entry;
50 bayo_inramp_x = bayo_entry;
51 bayo_inramp_z = bayo_entry;
53 oring_mid_dia = oring_bore + oring_thick;
54 oring_outer_dia = oring_mid_dia + oring_thick;
56 oring_oblate = (1 - oring_compress);
58 oring_y_rad = oring_thick/2 * oring_oblate;
59 oring_x_rad = oring_thick/2 / oring_oblate;
61 seal_thick = oring_y_rad * (1 + cos(oring_upper_embed_angle));
63 side_height = rivet_posn + bayo_behind + rivet_thick/2;
64 side_thick = rivet_tall + over_rivet_wall;
66 top_thick = max(top_minthick_middle,
67 top_minthick_by_oring + oring_y_rad);
69 top_z = top_thick + seal_thick;
71 middle_bot_z = top_z - top_minthick_middle;
73 bayo_entry = bayo_behind / 3.0;
74 bayo_top_z = bayo_behind + rivet_thick + bayo_above_gap;
75 bayo_entry_ramp = bayo_entry + bayo_interf;
77 rivet_entry_width = rivet_width + side_rivet_gap;
79 jig_mark_rad = jig_mark + main_dia/2 + jig_thick;
86 bayo_a = [ bayo_entry_x, 0 ];
87 bayo_p = [ 0, bayo_entry_z ];
88 bayo_n = [ 0, bayo_behind-bayo_inramp_z ];
89 bayo_m = [ bayo_inramp_x, bayo_behind ];
90 bayo_l = bayo_m + bayo_interf * [ 1/bayo_interf_slope, 1 ];
91 bayo_k = bayo_l + [ bayo_interf_width, 0 ];
92 bayo_j = bayo_k + bayo_interf * [ 1/bayo_interf_slope, -1 ];
93 bayo_i = bayo_j + [ rivet_width, 0 ];
94 bayo_h = [ bayo_i[0], bayo_behind + rivet_thick
95 + bayo_above_gap + bayo_interf ];
96 bayo_g = [ bayo_m[0] - rivet_width, bayo_h[1] ];
98 bayo_e = [-bayo_p[0], bayo_p[1]] - [rivet_entry_width,0];
99 bayo_d = [-bayo_a[0], bayo_a[1]] - [rivet_entry_width,0];
100 bayo_c = bayo_d + [0,-5];
101 bayo_b = bayo_a + [0,-5];
103 bayo_f = [ bayo_e[0], bayo_g[1] + (bayo_e[0] - bayo_g[0]) ];
105 bayo_polygon = [ bayo_a,
123 module MainProfile(){
124 main_cnr_pos = [ side_thick, top_z ] - [1,1]*main_cnr;
127 translate(main_cnr_pos){
130 circle(r = main_cnr);
131 circle(r = main_cnr * 0.5);
136 polygon([[ -top_middle_dr, middle_bot_z ],
137 [ -top_middle_dr, top_z ],
138 [ main_cnr_pos[0], top_z ],
139 [ side_thick, main_cnr_pos[1] ],
140 [ side_thick, -side_height ],
141 [ side_taper, -side_height ],
144 [ -oring_x_rad, seal_thick ],
148 translate([ oring_mid_dia/2 - main_dia/2, 0 ])
150 translate([ 0, oring_y_rad ])
151 scale([ 1/oring_oblate, oring_oblate ])
152 circle(oring_thick/2);
153 translate([ 0, oring_y_rad*2 - oring_thick/2 ])
154 circle(oring_thick/2);
159 module RotateProjectSlice(offset, slice_size, nom_rad, real_rad){
160 // nom_rad > real_rad
161 rotate([0,0, atan2(offset, nom_rad) ]){
163 translate([-offset, -10, 0])
165 linear_extrude(height= nom_rad*2)
167 translate([0,0, -25])
168 cylinder(h=50, r= real_rad);
169 translate([0,0, -25])
170 linear_extrude(height= 50)
172 [ -slice_size, -real_rad*2 ],
173 [ +slice_size, -real_rad*2 ] ]);
178 module RotateProject(x_min, x_max, slice_size, nom_rad, real_rad){
179 offs = [ for (i=[ x_min :
181 x_max + slice_size ]) i ];
184 RotateProjectSlice(off, slice_size, nom_rad, real_rad)
188 module BayonetCutout(){
189 RotateProject(bayo_c[0], bayo_i[0], bayo_slice_size,
190 main_dia/2 + side_thick,
191 main_dia/2 + rivet_tall)
192 polygon(bayo_polygon, convexity=10);
195 module ProfilesDemo(){ ////toplevel
196 translate([-10,0]) MainProfile();
197 translate([+10,0]) polygon(bayo_polygon, convexity=10);
200 module Cover(){ ////toplevel
201 render() difference(){
203 rotate_extrude(convexity=10)
204 translate([main_dia/2, 0])
206 translate([0,0, middle_bot_z])
207 cylinder(h= top_minthick_middle, r = main_dia/2 - top_middle_dr + 1);
211 translate([0,0, -side_height])
213 for (r=[0 : 60 : 179]) {
215 height = top_thick - brace_above_below*2;
216 translate([0,0, middle_bot_z + brace_above_below + height/2 ])
217 cube(center=true, [ oring_bore - brace_end_shorter,
218 brace_hole_width, height ]);
225 translate([0,0, -10])
226 cylinder(r= main_dia/2 - jig_rim, h=20);
229 module Jig(){ ////toplevel
232 translate([0,0, -side_height]){
233 cylinder(r= main_dia/2 + jig_thick, h= side_height + jig_thick);
235 translate([-jig_mark_rad, 0, jig_thick - jig_mark])
236 cube([jig_mark_rad*2, jig_mark, jig_mark]);
238 translate([0,0, -side_height-1])
239 cylinder(r= main_dia/2, h= side_height + 1);
241 translate([0,0, -rivet_posn])
243 translate([0,0, -100])
244 cylinder(r= jig_hole_dia/2, h = 200);
248 module CoverTest2(){ ////toplevel
255 module CoverTest1(){ ////toplevel
258 translate([0,0, -10])
259 cube([ main_dia*3, main_dia * .85, 20], center=true);