// -*- C -*-
+coarse = false;
+
main_dia = 71.2 + 0.50 - 2.26;
-top_thick = 4;
+top_thick_middle = 4;
+top_thick_by_oring = 3.0;
+top_middle_dr = 11;
-main_cnr = 4.0;
+main_cnr = 6.0;
rivet_posn = 6.0;
rivet_thick = 1.67;
rivet_width = 4.15 + 1.0;
-rivet_tall = 5.51 + 0.49;
+rivet_tall = 5.51 + 1.49;
-over_rivet_wall = 0.5;
+over_rivet_wall = 1.0;
side_rivet_gap = 1.5;
-bayo_interf = 0.75;
+bayo_interf = 1.25;
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
+oring_upper_embed_angle = 80;
+oring_compress = 0.05; // proportion
+
+oring_rm_beside = 5;
+oring_rm_scale = 2.0;
+oring_rm_angle = 20;
side_taper = 1.0;
bayo_entry = bayo_behind/3;
-bayo_slice_size = 1;
+bayo_slice_size = coarse ? 5 : 1;
brace_hole_width = 1.0;
brace_above_below = 1.2;
+brace_end_shorter = 0.3;
jig_thick = 1.4;
jig_hole_dia = 3.0;
oring_mid_dia = oring_bore + oring_thick;
oring_outer_dia = oring_mid_dia + oring_thick;
-oring_y_rad = oring_thick/2 * (1 - oring_compress);
-oring_x_rad = oring_thick/2 / (1 - oring_compress);
+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));
+by_oring_z = 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;
+top_z = top_thick_by_oring + oring_y_rad + by_oring_z;
+
+middle_bot_z = top_z - top_thick_middle;
bayo_entry = bayo_behind / 3.0;
bayo_top_z = bayo_behind + rivet_thick + bayo_above_gap;
jig_mark_rad = jig_mark + main_dia/2 + jig_thick;
-$fs=0.5;
-$fa=1;
+$fs= coarse ? 2.5 : 0.5;
+$fa= coarse ? 5 : 1;
// bayonet definition
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_h = [ bayo_i[0], bayo_behind + rivet_thick
+ + bayo_above_gap + bayo_interf ];
bayo_g = [ bayo_m[0] - rivet_width, bayo_h[1] ];
bayo_e = [-bayo_p[0], bayo_p[1]] - [rivet_entry_width,0];
square([10,10]);
}
}
- polygon([[ -11, seal_thick ],
- [ -11, top_z ],
+ polygon([[ -top_middle_dr, middle_bot_z ],
+ [ -top_middle_dr, 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 ],
+ [ 0, by_oring_z ],
+ [ -oring_x_rad, by_oring_z ],
],
convexity=10);
}
+ translate([ oring_mid_dia/2 - main_dia/2, 0 ])
+ hull(){
+ translate([ 0, oring_y_rad ])
+ scale([ 1/oring_oblate, oring_oblate ])
+ circle(oring_thick/2);
+ translate([ 0, oring_y_rad*2 - oring_thick/2 ])
+ circle(oring_thick/2);
+ }
}
}
}
module ProfilesDemo(){ ////toplevel
- translate([-20,0]) MainProfile();
- polygon(bayo_polygon, convexity=10);
+ translate([-10,0]) MainProfile();
+ translate([+10,0]) polygon(bayo_polygon, convexity=10);
}
module Cover(){ ////toplevel
rotate_extrude(convexity=10)
translate([main_dia/2, 0])
MainProfile();
- translate([0,0, seal_thick])
- cylinder(h= top_thick, r = main_dia/2 - 10);
+ translate([0,0, middle_bot_z])
+ cylinder(h= top_thick_middle, r = main_dia/2 - top_middle_dr + 1);
}
- for (r=[0,180])
+ for (r=[0,180]){
rotate([0,0, r])
translate([0,0, -side_height])
BayonetCutout();
+ rotate([0,0, r + asin((bayo_d[0] - oring_rm_beside) / (main_dia/2))])
+ translate([0,
+ oring_mid_dia/2 + oring_thick/4 * oring_rm_scale,
+ oring_y_rad * 1.5])
+ rotate([-oring_rm_angle, 0, 0])
+ mirror([0,0,1])
+ cylinder(r = oring_thick/4 * oring_rm_scale, h=20);
+ }
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 ]);
+ height = top_thick_middle - brace_above_below*2;
+ translate([0,0, middle_bot_z + brace_above_below + height/2 ])
+ cube(center=true, [ oring_bore - brace_end_shorter,
+ brace_hole_width, height ]);
}
}
}
module CoverTest1(){ ////toplevel
difference(){
CoverTest2();
- translate([0,0, -10])
- cube([ main_dia*3, main_dia * .85, 20], center=true);
+ for (r= [ 40, 147 ]){
+ rotate([0,0, r]){
+ translate([0,0, -10]) {
+ cube([ main_dia*3, main_dia * .55, 18], center=true);
+ }
+ }
+ }
}
}