X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=poster-tube-lid.scad;h=4ce2176f513dbe34e646cfbac7859aae7a5a0ab6;hb=9cb16ea8efbc65fba14bded7da869c2a0e57b396;hp=6cacb6809e38dda83ed439004ae5c08e01a649f2;hpb=37921e0197f294dfdded11642eefb4f5133a0e8d;p=reprap-play.git

diff --git a/poster-tube-lid.scad b/poster-tube-lid.scad
index 6cacb68..4ce2176 100644
--- a/poster-tube-lid.scad
+++ b/poster-tube-lid.scad
@@ -75,6 +75,19 @@ 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_pin_height = 7;
+
+catch_stem_below_gap = 1.0;
+catch_stem_beside_gap = 2.0;
+catch_pin_gap = 0.5;
+catch_hook_slope = 0.15;
+
 // calculated
 
 TAU = PI*2;
@@ -125,6 +138,44 @@ 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;
+catch_strap_thick = sm_main_thick;
+catch_stem_end_h = catch_stem_h;
+catch_pin_width = rivet_entry_width - catch_pin_gap;
+
+cppy6 = -catch_strap_width/2;
+cppxC = TAU * 0.34 * main_dia/2;
+cppB = [ catch_pin_width/2,
+	 cppy6
+	 + catch_stem_below_gap
+	 + catch_pin_height
+	 + catch_knob_dia/2 ];
+cpp0 = [ 0,
+	 cppB[1]
+	 + catch_knob_dia
+	 + catch_knob_above_gap ];
+cpp12 = cpp0 + [1,0] * (catch_pin_height * catch_hook_slope);
+cpp1 = cpp0 + [0,1] * catch_pin_height;
+cpp2 = cpp1 + [1,0] * catch_pin_width;
+cpp4 = cpp0 + [0,-1] * catch_stem_end_h;
+cpp3 = [ cpp2[0], cpp4[1] ];
+cpp5 = [ cpp0[0] - catch_stem_len,
+	 -catch_stem_h ];
+cpp6 = [ cpp5[0], catch_cr ];
+cpp7 = cppB + [1,-1] * catch_knob_dia/2
+            + [ catch_stem_beside_gap, -catch_stem_below_gap ]
+            + [ 0, -catch_pin_height ]
+            + [-1,1] * catch_cr;
+cpp11 = cpp7 + [1,0] * catch_cr;
+cpp10 = [ cpp11[0], 0 - catch_cr ];
+cpp8 = cpp10 + [1,0] * catch_cr;
+cpp9 = cpp8 + [0,1] * catch_cr;
+cppC = [ cppxC, cpp9[1] ];
+cppA = [ -cppxC, 0 ];
+cppD = cppC + [0,-1] * catch_strap_width;
+cppE = [ cppA[0], cppD[1] ];
+
 $fs= coarse ? 2.5 : 0.5;
 $fa= coarse ? 5 : 1;
 
@@ -236,10 +287,6 @@ 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) ]){
@@ -341,6 +388,12 @@ 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])
@@ -398,6 +451,13 @@ 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,
@@ -457,6 +517,58 @@ module StrapMount(){ ////toplevel
   }
 }
 
+module CatchCoreProfile(){ ////toplevel
+  hull(){
+    translate(cppB) circle(r= catch_knob_dia/2);
+    polygon([cpp4,
+	     cppB,
+	     cpp3]);
+  }
+  translate(cpp8)
+    circle(catch_cr);
+  polygon([
+	   cpp4,
+	   cppB,
+	   cpp3,
+	   cpp2,
+	   cpp1,
+	   cpp12,
+	   ]);
+  difference(){
+    polygon([ cpp4,
+	      cpp3,
+	      cpp12,
+	      cppA,
+	      cppE,
+	      cppD,
+	      cppC,
+	      cpp9,
+	      cpp10,
+	      cpp11,
+	      cpp7,
+	      cpp5,
+	      ], convexity=10);
+    hull(){
+      translate(cpp7) circle(r= catch_cr);
+      polygon([ cpp7,
+		cpp5,
+		cpp11 ]);
+    }
+    hull(){
+      translate(cpp6) circle(catch_cr);
+      polygon([ cppA,
+		cpp0,
+		cpp1 ]);
+    }
+  }
+}
+
+module CatchPreDistort(){ /////toplevel
+  rotate([90,0,0])
+    linear_extrude(height=catch_strap_thick, convexity=10)
+    CatchCoreProfile();
+}
+
 //ProfilesDemo();
 //BayonetCutout();
 //MainProfile();