X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=poster-tube-lid.scad;h=81120a4a74258a76c7528c65894b9dff9d760762;hp=64de31b07df509fa761078227a27fb649ec5556c;hb=1e5609f5812a3103813be78c322b383c8a13d35b;hpb=5466474336d93afb0ac2e0b217960da817c2e468

diff --git a/poster-tube-lid.scad b/poster-tube-lid.scad
index 64de31b..81120a4 100644
--- a/poster-tube-lid.scad
+++ b/poster-tube-lid.scad
@@ -9,28 +9,36 @@ top_middle_dr = 11;
 
 main_cnr = 6.0;
 
-rivet_posn = 6.0;
+min_wall = 3;
+
+rivet_posn = 6.0 + 0.30;
 rivet_thick = 1.67;
 rivet_width = 4.15 + 1.0;
 rivet_tall = 5.51 + 1.49;
 
 over_rivet_wall = 1.0;
 side_rivet_gap = 1.5;
+inside_rivet_gap = 1.5;
 
-bayo_interf = 1.25;
+bayo_interf = 0.30;
 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;
 
 oring_upper_embed_angle = 80;
-oring_compress = 0.05; // proportion
+oring_compress = 0.1; // proportion
+oring_compress_more = 0.2;
+
+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;
 
@@ -45,8 +53,32 @@ jig_hole_dia = 3.0;
 jig_rim = 5;
 jig_mark = 5;
 
+strap_hoop_thick = 6;
+strap_hoop_inside = 10;
+strap_hoop_strlen = 10;
+strap_hoop_elevation = 45;
+
+sm_inner_circum = 218 - 1.90 - 1.00 - 0.50;
+sm_main_thick = 2.0;
+sm_main_width = 20;
+
+sm_bolt_dia = 3.5 + 0.1;
+sm_bolt_shaft = 21.9;
+sm_bolt_head_dia = 6.94 + 1.0;
+sm_bolt_head_thick = 2.14;
+sm_bolt_nut_width = 5.89 + 0.25;
+sm_bolt_nut_thick = 3.68;
+sm_bolt_tighten_allow = 2.0;
+
+sm_bolt_y_clear = 0.75;
+sm_bolt_y_over = 0.5;
+
+sm_closure_cnr = 3.0;
+
 // calculated
 
+TAU = PI*2;
+
 bayo_entry_x = bayo_entry;
 bayo_entry_z = bayo_entry;
 bayo_inramp_x = bayo_entry;
@@ -70,16 +102,34 @@ 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;
 
+handling_dia = oring_bore + oring_thick*2 + min_wall*2;
+handling_angle = 45;
+
+sm_inner_rad = (sm_inner_circum + sm_bolt_tighten_allow/2) / TAU;
+sm_outer_rad = sm_inner_rad + sm_main_thick;
+
+smc_pos = [ 0, sm_inner_rad, 0 ];
+
+smc_bolt_nut_dia = sm_bolt_nut_width / cos(30);
+smc_bolt_nut_eff_thick = sm_bolt_nut_thick + sm_bolt_tighten_allow;
+
+smc_bolt_y = sm_bolt_dia/2 + sm_bolt_y_clear;
+smc_max_y = smc_bolt_y + sm_bolt_y_over
+  + max(sm_bolt_head_dia/2, smc_bolt_nut_dia/2);
+smc_cnr_c_x = sm_bolt_shaft/2 - sm_closure_cnr
+  + sm_bolt_head_thick/2 + smc_bolt_nut_eff_thick/2;
+
 $fs= coarse ? 2.5 : 0.5;
 $fa= coarse ? 5 : 1;
 
+include <poster-tube-lid-parametric.scad>
+
 // bayonet definition
 
 bayo_a = [ bayo_entry_x, 0 ];
@@ -89,9 +139,8 @@ 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];
@@ -147,7 +196,7 @@ module MainProfile(){
     translate([ oring_mid_dia/2 - main_dia/2, 0 ])
       hull(){
       translate([ 0, oring_y_rad ])
-	scale([ 1/oring_oblate, oring_oblate ])
+	scale([ 1/oring_oblate * (oring_compress_more+1) , oring_oblate ])
 	circle(oring_thick/2);
       translate([ 0, oring_y_rad*2 - oring_thick/2 ])
 	circle(oring_thick/2);
@@ -155,6 +204,42 @@ module MainProfile(){
   }
 }
 
+module StrapHoopProfile(){
+  circle(r = strap_hoop_thick/2);
+}
+
+module StrapHoop(){ ////toplevel
+  bigrad = strap_hoop_inside/2 + strap_hoop_thick/2;
+  extralen = strap_hoop_thick * 5;
+
+  intersection(){
+    rotate([strap_hoop_elevation, 0,0]){
+      for (x= [ -1, +1 ] * bigrad) {
+	translate([x, -extralen, 0])
+	  rotate([-90,0,0])
+	  linear_extrude(height= extralen + strap_hoop_strlen + 0.1,
+			 convexity=10)
+	  StrapHoopProfile();
+      }
+      translate([0, strap_hoop_strlen, 0]){
+	intersection(){
+	  rotate_extrude(convexity=10)
+	    translate([bigrad, 0,0])
+	    StrapHoopProfile();
+	  translate([0,50,0])
+	    cube([100,100,100], center=true);
+	}
+      }
+    }
+    translate([0, 50, 0])
+      cube(100, center=true);
+  }
+}
+
+module HandlingProfile(){
+//  translate([
+}
+
 module RotateProjectSlice(offset, slice_size, nom_rad, real_rad){
   // nom_rad > real_rad
   rotate([0,0, atan2(offset, nom_rad) ]){
@@ -188,27 +273,65 @@ 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;
@@ -218,6 +341,16 @@ module Cover(){ ////toplevel
       }
     }
   }
+  for (r=[0,180])
+    rotate([0,0,r])
+      translate([-implheadcup_large_dia * .5 - implheadcup_thick/2,
+		 -implheadcup_large_dia * .0,
+		 middle_bot_z + 0.1])
+      ImplHeadCup();
+//  translate(strap_hoop_thick * [-0.5, 0, +1])
+//    translate([handling_dia/2, 0, -side_height])
+//    rotate([0,180,0]) rotate([0,0,90])
+//    StrapHoop();
 }
 
 module SavingHole(){
@@ -254,13 +387,86 @@ module CoverTest2(){ ////toplevel
 module CoverTest1(){ ////toplevel
   difference(){
     CoverTest2();
-    for (r= [ 40, 147 ]){
-      rotate([0,0, r]){
-	translate([0,0, -10]) {
-	  cube([ main_dia*3, main_dia * .55, 18], center=true);
+    difference(){
+      for (r= [ 40, 147 ]){
+	rotate([0,0, r]){
+	  translate([0,0, -10]) {
+	    cube([ main_dia*3, main_dia * .53, 18], center=true);
+	  }
 	}
       }
+//      translate([ 50, 0, 0 ])
+//	cube([ 100,
+//	       strap_hoop_inside + strap_hoop_thick*2 + 1,
+//	       100 ],
+//	     center=true);
+    }
+  }
+}
+
+module ImplHeadCupTest(){ ////toplevel
+  for (r=[0,180])
+    rotate([0,0,r])
+      translate([-17,0,0])
+      ImplHeadCup();
+}
+
+module StrapMountBolt(l_delta){ ///toplevel
+  // positioned relative to smc_pos
+  translate([(smc_bolt_nut_eff_thick - sm_bolt_head_thick)/2,
+	     smc_bolt_y,
+	     sm_main_width/2]){
+    translate([ -sm_bolt_shaft/2-1, 0,0 ]){
+      rotate([0,90,0]) cylinder(r= sm_bolt_dia/2, h= sm_bolt_shaft+2);
+    }
+    translate([ -sm_bolt_shaft/2, 0,0 ])
+      rotate([0,-90,0])
+      cylinder($fn=6, r=smc_bolt_nut_dia/2,
+	       h=smc_bolt_nut_eff_thick + l_delta);
+    translate([ sm_bolt_shaft/2, 0,0 ])
+      rotate([0,90,0])
+      cylinder(r=sm_bolt_head_dia/2, h=sm_bolt_head_thick + l_delta);
+  }
+}
+
+module StrapMountProtrusion(half_x, max_y, cnr){
+  translate(smc_pos){
+    linear_extrude(height=sm_main_width, convexity=10){
+      hull(){
+	for (m = [0,1]) mirror([m,0,0]) {
+	  translate([-(half_x - cnr), max_y - cnr])
+	    circle(r=cnr);
+	  translate([-half_x, -sm_inner_rad])
+	    square([1,1]);
+	}
+      }
+    }
+  }
+}
+
+module StrapMount(){ ////toplevel
+  difference(){
+    union(){
+      cylinder(r=sm_outer_rad, h=sm_main_width);
+      StrapMountProtrusion(smc_cnr_c_x + sm_closure_cnr,
+			   smc_max_y,
+			   sm_closure_cnr);
+      rotate([0,0,180]){
+	StrapMountProtrusion(strap_hoop_inside/2 + strap_hoop_thick,
+			     strap_hoop_thick,
+			     sm_closure_cnr);
+	translate(smc_pos +
+		  [0,0, sm_main_width] +
+		  strap_hoop_thick * [ 0, 0.5, -1.0 ])
+	  StrapHoop();
+      }
     }
+    translate([0,0,-1])
+      cylinder(r=sm_inner_rad, h=sm_main_width+2);
+    translate(smc_pos)
+      StrapMountBolt(10);
+    translate(smc_pos)
+      cube([ sm_bolt_tighten_allow, 40,100 ], center=true);
   }
 }