poster-tube-lid: LimitForHandling: adjust thickness

[reprap-play.git] / poster-tube-lid.scad

diff --git a/poster-tube-lid.scad b/poster-tube-lid.scad
index d7539f7cab4a9eb9713e2df16df57f3a1a1ee7e6..09206a6faafbd9a042418eb347247b01815a8416 100644 (file)
--- a/poster-tube-lid.scad
+++ b/poster-tube-lid.scad
@@ -1,17 +1,22 @@
 // -*- C -*-
 
+coarse = false;
+
 main_dia = 71.2 + 0.50 - 2.26;
-top_minthick_middle = 4;
-top_minthick_by_oring = 2.5;
+top_thick_middle = 4;
+top_thick_by_oring = 3.0;
+top_middle_dr = 11;
+
+main_cnr = 6.0;
 
-main_cnr = 4.0;
+min_wall = 3;
 
 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 = 1.25;
@@ -23,7 +28,11 @@ oring_thick = 5.0;
 oring_bore = 62.0;
 
 oring_upper_embed_angle = 80;
-oring_compress = 0.1; // proportion
+oring_compress = 0.05; // proportion
+
+oring_rm_beside = 8;
+oring_rm_scale = 2.0;
+oring_rm_angle = 20;
 
 side_taper = 1.0;
 
@@ -31,7 +40,7 @@ bayo_above_gap = 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;
@@ -57,15 +66,14 @@ 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_thick = max(top_minthick_middle,
-               top_minthick_by_oring + oring_y_rad);
+top_z = top_thick_by_oring + oring_y_rad + by_oring_z;
 
-top_z = top_thick + seal_thick;
+middle_bot_z = top_z - top_thick_middle;
 
 bayo_entry = bayo_behind / 3.0;
 bayo_top_z = bayo_behind + rivet_thick + bayo_above_gap;
@@ -75,8 +83,11 @@ rivet_entry_width = rivet_width + side_rivet_gap;
 
 jig_mark_rad = jig_mark + main_dia/2 + jig_thick;
 
-$fs=0.5;
-$fa=1;
+handling_dia = oring_bore + oring_thick*2 + min_wall*2;
+handling_angle = 45;
+
+$fs= coarse ? 2.5 : 0.5;
+$fa= coarse ? 5 : 1;
 
 // bayonet definition
 
@@ -130,15 +141,15 @@ module MainProfile(){
          square([10,10]);
        }
       }
-      polygon([[ -11,                   top_z - top_minthick_middle ],
-              [ -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        ],
-              [ -oring_x_rad,          seal_thick        ],
+              [ 0,                     by_oring_z        ],
+              [ -oring_x_rad,          by_oring_z        ],
               ],
              convexity=10);
     }
@@ -153,6 +164,10 @@ module MainProfile(){
   }
 }
 
+module HandlingProfile(){
+//  translate([
+}
+
 module RotateProjectSlice(offset, slice_size, nom_rad, real_rad){
   // nom_rad > real_rad
   rotate([0,0, atan2(offset, nom_rad) ]){
@@ -186,6 +201,7 @@ module BayonetCutout(){
   RotateProject(bayo_c[0], bayo_i[0], bayo_slice_size,
                main_dia/2 + side_thick, 
                main_dia/2 + rivet_tall)
+    translate([-0.5 * (bayo_a[0] + bayo_d[0]), 0])
     polygon(bayo_polygon, convexity=10);
 }
 
@@ -194,23 +210,60 @@ module ProfilesDemo(){ ////toplevel
   translate([+10,0]) polygon(bayo_polygon, convexity=10);
 }
 
+module LimitForHandling(){ ////toplevel
+  hull() for (r=[0,180])
+    rotate([0,0,r]) {
+      for (rs=[-1,+1]) {
+       for (xd=[0,1]) {
+         rotate([0,0, rs * handling_angle/2]) {
+           translate([rs * xd * main_dia/2 * tan(handling_angle/2),
+                      main_dia/2 + side_thick - main_cnr,
+                      top_z - main_cnr]) {
+             mirror([0,0,1])
+               cylinder(r= main_cnr, h=50);
+             sphere(main_cnr);
+           }
+         }
+       }
+      } 
+    }
+  hull() rotate_extrude(){
+    translate([ handling_dia/2 - main_cnr, top_z - main_cnr ]) {
+      circle(r = main_cnr);
+      mirror([0,1]) square([ main_cnr, 50 ]);
+    }
+  }
+  //cylinder(r= handling_dia/2, h=20);
+}
+
 module Cover(){ ////toplevel
   render() difference(){
-    union(){
-      rotate_extrude(convexity=10)
-       translate([main_dia/2, 0])
-       MainProfile();
-      translate([0,0, top_z - top_minthick_middle])
-       cylinder(h= top_minthick_middle, r = main_dia/2 - 10);
+    intersection(){
+      union(){
+       rotate_extrude(convexity=10)
+         translate([main_dia/2, 0])
+         MainProfile();
+       translate([0,0, middle_bot_z])
+         cylinder(h= top_thick_middle, r = main_dia/2 - top_middle_dr + 1);
+      }
+      LimitForHandling();
     }
-    for (r=[0,180])
+    for (r=[0,180]){
       rotate([0,0, r])
        translate([0,0, -side_height])
        BayonetCutout();
+      rotate([0,0, r + asin((-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 ])
+       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 ]);
       }
@@ -252,8 +305,13 @@ module CoverTest2(){ ////toplevel
 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);
+       }
+      }
+    }
   }
 }