chiark / gitweb /
poster-tube-lid: Introduce bayo_*_rad (nfc)
[reprap-play.git] / poster-tube-lid.scad
index 433f466..2e8209f 100644 (file)
@@ -11,7 +11,7 @@ main_cnr = 6.0;
 
 min_wall = 3;
 
-rivet_posn = 6.0 + 0.6;
+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 = 0.85;
+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;
@@ -55,9 +56,42 @@ 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;
+
+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;
+
 bayo_entry_x = bayo_entry;
 bayo_entry_z = bayo_entry;
 bayo_inramp_x = bayo_entry;
@@ -83,6 +117,9 @@ middle_bot_z = top_z - top_thick_middle;
 bayo_entry = bayo_behind / 3.0;
 bayo_top_z = bayo_behind + bayo_gap;
 
+bayo_nom_rad = main_dia/2 + side_thick;
+bayo_real_rad = main_dia/2 + rivet_tall;
+
 rivet_entry_width = rivet_width + side_rivet_gap;
 
 jig_mark_rad = jig_mark + main_dia/2 + jig_thick;
@@ -90,9 +127,63 @@ 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;
+
+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 = 0.34 * sm_inner_rad * TAU;
+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;
 
+include <poster-tube-lid-parametric.scad>
+
 // bayonet definition
 
 bayo_a = [ bayo_entry_x, 0 ];
@@ -159,7 +250,7 @@ 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);
@@ -172,31 +263,33 @@ module StrapHoopProfile(){
 }
 
 module StrapHoop(){ ////toplevel
-  bigrad = strap_hoop_inside + strap_hoop_thick/2;
-  extralen = strap_hoop_thick;
-
-  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);
+  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) ]){
@@ -228,8 +321,8 @@ module RotateProject(x_min, x_max, slice_size, nom_rad, real_rad){
 
 module BayonetCutout(){
   RotateProject(bayo_c[0], bayo_i[0], bayo_slice_size,
-               main_dia/2 + side_thick
-               main_dia/2 + rivet_tall)
+               bayo_nom_rad
+               bayo_real_rad)
     translate([-0.5 * (bayo_a[0] + bayo_d[0]), 0])
     polygon(bayo_polygon, convexity=10);
 }
@@ -298,6 +391,16 @@ 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(){
@@ -334,16 +437,180 @@ 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 SomeStrap(){
+  // children(0) is to add, (1) subtract
+  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);
+      children(0);
+    }
+    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);
+    children(1);
+  }
+}
+
+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
+  SomeStrap(){
+    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();
+    }
+    union(){ };
+  }
+}
+
+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
+  scale(100 / sm_inner_rad)
+    rotate([90,0,0])
+    linear_extrude(height=catch_strap_thick, convexity=10)
+    CatchCoreProfile();
+}
+
+module CatchAssembly(){ /////toplevel
+  rotate([0,0, -0.5 * (cpp1[0] + cpp2[0]) / sm_inner_rad * 360/TAU])
+    translate([0,0, catch_strap_width])
+    scale(sm_inner_rad / 100)
+    import(str("poster-tube-lid,CatchPostDistort-fa",
+              (coarse ? 20 : 1),
+              ".stl"),
+          convexity=20);
+
+  SomeStrap(){
+    union(){ }
+    union(){
+      translate([-200, -200, -200])
+       cube([400, 200, 400]);
+    }
+  }
+}
+
+module CatchDemo(){ /////toplevel
+  color("blue") translate([0,0,
+            -catch_strap_width
+            -cpp0[1]
+            ])
+    CatchAssembly();
+  translate([0,0,+side_height
+            ])
+    Cover();
+}
+
 //ProfilesDemo();
 //BayonetCutout();
 //MainProfile();