X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=poster-tube-lid.scad;h=8570a04a2b1145d895a7a47b7fea812344869bf5;hb=1ae07061f8ea16fa0190005b8762e9cd73ca35ee;hp=a06567b607ed2fc9d398e321b161bf909fde65fd;hpb=6bace553c2c827f378e26a8c8c03ba866df20515;p=reprap-play.git

diff --git a/poster-tube-lid.scad b/poster-tube-lid.scad
index a06567b..8570a04 100644
--- a/poster-tube-lid.scad
+++ b/poster-tube-lid.scad
@@ -1,5 +1,7 @@
 // -*- C -*-
 
+coarse = false;
+
 main_dia = 71.2 + 0.50 - 2.26;
 top_thick_middle = 4;
 top_thick_by_oring = 3.0;
@@ -7,18 +9,21 @@ top_middle_dr = 11;
 
 main_cnr = 6.0;
 
-rivet_posn = 6.0;
+min_wall = 3;
+
+rivet_posn = 6.0 + 1.1;
 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;
+inside_rivet_gap = 1.5;
 
-bayo_interf = 1.25;
+bayo_interf = 0.85;
 bayo_behind = 3.5;
 bayo_interf_width = 2.0;
-bayo_interf_slope = 0.75;
+bayo_interf_slope = 0.5;
 
 oring_thick = 5.0;
 oring_bore = 62.0;
@@ -26,13 +31,17 @@ oring_bore = 62.0;
 oring_upper_embed_angle = 80;
 oring_compress = 0.1; // proportion
 
+oring_rm_beside = 8;
+oring_rm_scale = 2.0;
+oring_rm_angle = 20;
+
 side_taper = 1.0;
 
-bayo_above_gap = 1.0;
+bayo_gap = 6.0;
 
 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;
@@ -68,15 +77,17 @@ 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;
-bayo_entry_ramp = bayo_entry + bayo_interf;
+bayo_top_z = bayo_behind + bayo_gap;
 
 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
 
@@ -87,9 +98,8 @@ 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_interf ];
+bayo_i = bayo_j + [ rivet_width + inside_rivet_gap, 0 ];
+bayo_h = [ bayo_i[0], bayo_behind + bayo_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];
@@ -153,6 +163,10 @@ 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) ]){
@@ -186,27 +200,65 @@ 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);
 }
 
 module ProfilesDemo(){ ////toplevel
   translate([-10,0]) MainProfile();
-  translate([+10,0]) polygon(bayo_polygon, convexity=10);
+  translate([+10, -side_height]) 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, middle_bot_z])
-	cylinder(h= top_thick_middle, r = main_dia/2 - top_middle_dr + 1);
+    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_middle - brace_above_below*2;
@@ -255,7 +307,7 @@ module CoverTest1(){ ////toplevel
     for (r= [ 40, 147 ]){
       rotate([0,0, r]){
 	translate([0,0, -10]) {
-	  cube([ main_dia*3, main_dia * .55, 20], center=true);
+	  cube([ main_dia*3, main_dia * .55, 18], center=true);
 	}
       }
     }