X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=poster-tube-lid.scad;h=cadbe62537c6a6b4f314240cfbf9f6a0a7c29130;hb=d8f70205282e42f105ad4cb6df44d73a3404a166;hp=f1fb97be6911233b3ab53c9f8fe08f8a1c9557a9;hpb=e5c966a4a3f2a67ca7d2f09df1f722b8e6ea931c;p=reprap-play.git

diff --git a/poster-tube-lid.scad b/poster-tube-lid.scad
index f1fb97b..cadbe62 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;
@@ -57,11 +58,11 @@ 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;
@@ -69,11 +70,24 @@ 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;
 
+catch_stem_h = 3;
+catch_stem_len = 50;
+catch_stem_th = 3;
+
+catch_knob_dia = 6;
+catch_knob_above_gap = 8;
+catch_stem_end_h = 12;
+catch_pin_height = 7;
+
+catch_stem_below_gap = 1.0;
+catch_stem_beside_gap = 2.0;
+catch_pin_gap = 0.5;
+
 // calculated
 
 TAU = PI*2;
@@ -124,9 +138,36 @@ smc_max_y = smc_bolt_y + sm_bolt_y_over
 smc_cnr_c_x = sm_bolt_shaft/2 - sm_closure_cnr
   + sm_bolt_head_thick/2 + smc_bolt_nut_eff_thick/2;
 
+catch_cr = catch_knob_dia/2 + catch_stem_beside_gap;
+catch_strap_width = sm_main_width;
+
+cpp0 = [0,0];
+cpp1 = cpp0 + [0,1] * catch_pin_height;
+cpp2 = cpp0 + [1,0] * (rivet_entry_width - catch_pin_gap);
+cpp3 = cpp2 + [0,-1] * catch_stem_end_h;
+cpp4 = cpp2 + [0,-1] * catch_stem_end_h;
+cpp5 = [ cpp0[0] - catch_stem_len,
+	 cpp0[1] - (catch_stem_h + catch_cr) ];
+cppB = [ 0.5*(cpp1 + cpp2)[0],
+	 cpp1[1] - catch_pin_height - catch_knob_above_gap -
+	 0.5 * catch_knob_dia ];
+cpp7 = cppB + [-1,-1] * catch_knob_dia/2
+            + [ catch_stem_beside_gap, -catch_stem_below_gap ]
+            + [ 0, -catch_pin_height ]
+            + [-1,1] * catch_cr;
+cpp6 = [ cpp5[0], cpp7[1] ];
+cpp8 = [ cpp7[0] + catch_cr*2,
+	 cpp0[0] - catch_cr ];
+cppC = cpp8 + [1,1] * catch_cr;
+cppA = [ cpp5[0] - catch_cr*2, cpp0[1] ];
+cppD = cppC + [0,-1] * catch_strap_width;
+cppE = [ cppA[0], cppD[1] ];
+
 $fs= coarse ? 2.5 : 0.5;
 $fa= coarse ? 5 : 1;
 
+include <poster-tube-lid-parametric.scad>
+
 // bayonet definition
 
 bayo_a = [ bayo_entry_x, 0 ];
@@ -193,7 +234,7 @@ 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);
@@ -233,10 +274,6 @@ module StrapHoop(){ ////toplevel
   }
 }
 
-module HandlingProfile(){
-//  translate([
-}
-
 module RotateProjectSlice(offset, slice_size, nom_rad, real_rad){
   // nom_rad > real_rad
   rotate([0,0, atan2(offset, nom_rad) ]){
@@ -338,6 +375,12 @@ 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])
@@ -395,6 +438,13 @@ module CoverTest1(){ ////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,
@@ -454,6 +504,21 @@ module StrapMount(){ ////toplevel
   }
 }
 
+module CatchCoreProfile(){
+  difference(){
+    polygon([ cpp4,
+	      cpp3,
+	      cpp2,
+	      cpp1,
+	      cpp0,
+	      cppA,
+	      cppE,
+	      cppD,
+	      cppC,
+	      ]);
+  }
+}
+
 //ProfilesDemo();
 //BayonetCutout();
 //MainProfile();