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=f68732815c3e81418ee278f42d392dac6e9dedc4;hb=b47a6fbe901394bc680c4ac79e3e26d8197ce948;hpb=d0fcf567a287b8f0298dbfc6e7e56468744b14d5

diff --git a/poster-tube-lid.scad b/poster-tube-lid.scad
index f687328..81120a4 100644
--- a/poster-tube-lid.scad
+++ b/poster-tube-lid.scad
@@ -11,7 +11,7 @@ main_cnr = 6.0;
 
 min_wall = 3;
 
-rivet_posn = 6.0 + 0.1;
+rivet_posn = 6.0 + 0.30;
 rivet_thick = 1.67;
 rivet_width = 4.15 + 1.0;
 rivet_tall = 5.51 + 1.49;
@@ -20,7 +20,7 @@ over_rivet_wall = 1.0;
 side_rivet_gap = 1.5;
 inside_rivet_gap = 1.5;
 
-bayo_interf = 0.44;
+bayo_interf = 0.30;
 bayo_behind = 3.5;
 bayo_interf_width = 2.0;
 bayo_interf_slope = 0.5;
@@ -30,6 +30,7 @@ oring_bore = 62.0;
 
 oring_upper_embed_angle = 80;
 oring_compress = 0.1; // proportion
+oring_compress_more = 0.2;
 
 oring_rm_beside = 8;
 oring_rm_scale = 2.0;
@@ -57,18 +58,19 @@ strap_hoop_inside = 10;
 strap_hoop_strlen = 10;
 strap_hoop_elevation = 45;
 
-sm_inner_circum = 239;
-sm_main_thick = 2.5;
-sm_main_width = 25;
+sm_inner_circum = 218 - 1.90 - 1.00 - 0.50;
+sm_main_thick = 2.0;
+sm_main_width = 20;
 
-sm_bolt_dia = 3.5;
+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 = 0.5;
+sm_bolt_y_clear = 0.75;
 sm_bolt_y_over = 0.5;
 
 sm_closure_cnr = 3.0;
@@ -109,22 +111,25 @@ 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 / TAU;
+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
-  - max(sm_bolt_head_thick, sm_bolt_nut_thick);
+  + 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 ];
@@ -191,7 +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);
@@ -336,6 +341,12 @@ 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])
@@ -393,29 +404,69 @@ module CoverTest1(){ ////toplevel
   }
 }
 
-module StrapMountBolt(){ ///toplevel
+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);
-      translate(smc_pos){
-	linear_extrude(height=sm_main_width, convexity=10){
-	  hull(){
-	    for (m = [0,1]) mirror([m,0,0]) {
-	      translate([-smc_cnr_c_x, smc_max_y - sm_closure_cnr])
-		circle(r=sm_closure_cnr);
-	      translate([-smc_cnr_c_x, -sm_inner_rad])
-		square([1,1]);
-	    }
-	  }
-	}
+      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);
   }
 }