X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=sprinkler-spike-receptacle.scad;h=c1ac3b5fc54adc2eb4c3e7747ff4e5184282f60f;hp=2c8534f467034ad20b817ddbddeaee602ff44aec;hb=3a48bcb0bb3b3b9192d0b9850312d911113b02da;hpb=b7816f485ca65d49bb183fd7be752f0f7674fae8

diff --git a/sprinkler-spike-receptacle.scad b/sprinkler-spike-receptacle.scad
index 2c8534f..c1ac3b5 100644
--- a/sprinkler-spike-receptacle.scad
+++ b/sprinkler-spike-receptacle.scad
@@ -2,13 +2,36 @@
 
 main_height = 95;
 
-spike_top_width = 21.04;
+spike_web_thick = 2.52 + 0.75;
+
+spike_top_width = 21.04 + 1.5;
 
 spike_botpos_height = 9.5;
-spike_botpos_width = 11.68;
+spike_botpos_width = 11.68 + 0.00;
 
 topwall_width = 1.5;
 
+mount_dist = 20;
+mount_width = 10;
+mount_height = 5;
+mount_hole_dia = 4.5;
+mount_head_dia = 7.5;
+mount_hole_th = 2.5;
+
+strap_height = main_height * 0.5;
+
+strap_width = 5.5;
+strap_thick = 2.5;
+strap_around = 2.5;
+strap_fixing_height = 4.0;
+strap_fixing_slope = 1.0;
+
+// calculated
+
+main_width = spike_top_width + topwall_width*2;
+
+pos_web_thick = spike_web_thick + topwall_width*2;
+
 module NegativePlan(){
   x4z =
     (spike_top_width - spike_botpos_width) /
@@ -21,16 +44,157 @@ module NegativePlan(){
   polygon([[ x0, -5],
 	   [ x0, 0],
 	   [ x1, z1],
+	   [ x1, z1+5],
+	   [-x1, z1+5],
 	   [-x1, z1],
 	   [-x0, 0],
 	   [-x0, -5]]);
 }
 
+module SomeMidRounding(sq_size, z_extra) {
+  translate([0,0,-z_extra])
+    linear_extrude(height= main_height + z_extra*2)
+    rotate(45)
+    square( sq_size, center=true );
+}
+
+module PositiveMidRounding(){
+  SomeMidRounding(pos_web_thick*2, 0);
+}
+
+module NegativeMidRounding(){
+  SomeMidRounding(spike_web_thick*2.5, 5);
+}
+
 module PositivePlan(){
-  w = spike_top_width + topwall_width*2;
+  w = main_width;
   translate([ -w/2, 0 ])
     square([ w, main_height ]);
 }
 
-PositivePlan();
-//NegativePlan();  
+module MultiplySolidifyPlan(th){
+  for (r=[0,90]) {
+    rotate([0,0,r])
+      rotate([90,0,0])
+      translate([0,0,-th/2])
+      linear_extrude(height=th)
+      children(0);
+  }
+}
+
+module MultiplyForFixings(){
+  for (r=[0:90:270])
+    rotate([0,0,r])
+    children(0);
+}
+
+module FixingsPositive(){
+  // mount
+  translate([ -1,
+	      -mount_width/2,
+	      0 ])
+    cube([ mount_dist + mount_width/2 + 1,
+	   mount_width,
+	   mount_height ]);
+
+  // strap
+  for (m=[0,1]) mirror([0,m,0]) {
+      translate([main_width/2, 0, strap_height]) {
+	hull(){
+	  translate([ -strap_around,
+		      -pos_web_thick/2,
+		      -(strap_thick + strap_around) / strap_fixing_slope ])
+	    cube([ strap_around,
+		   pos_web_thick/2 - strap_width/2,
+		   0.5 ]);
+	  translate([ -strap_around,
+		      -(strap_around + strap_width/2),
+		      0 ])
+	    cube([ strap_around*2 + strap_thick,
+		   strap_around,
+		   strap_fixing_height ]);
+	}
+	mirror([0,1,0])
+	  translate([ strap_thick,
+		      -strap_width/2,
+		      0 ])
+	  cube([ strap_around,
+		 strap_around + strap_width,
+		 strap_fixing_height ]);
+      }
+    }
+}
+
+module FixingsNegative(){
+  // mount hole
+  translate([ mount_dist, 0,0 ]) {
+    translate([0,0, -1])
+      cylinder(r= mount_hole_dia/2, h= 20, $fn=20);
+    translate([0,0, mount_hole_th])
+      cylinder(r = mount_head_dia/2, h=20, $fn=20);
+  }
+}
+
+module Main(){
+  difference(){
+    union(){
+      MultiplySolidifyPlan(pos_web_thick) PositivePlan();
+      PositiveMidRounding();
+      MultiplyForFixings() FixingsPositive();
+    }
+    MultiplySolidifyPlan(spike_web_thick) NegativePlan();
+    NegativeMidRounding();
+    MultiplyForFixings() FixingsNegative();
+  }
+}
+
+module PlanTest(){
+  linear_extrude(height=2.0){
+    difference(){
+      PositivePlan();
+      NegativePlan();
+    }
+    difference(){
+      circle(r = spike_botpos_width/2 + 5);
+      circle(r = spike_botpos_width/2);
+      translate([-50, 0]) square([100,50]);
+    }
+  }
+  linear_extrude(height=4.0){
+    difference(){
+      translate([ -main_width/2, 0 ]) square([ main_width, 2 ]);
+      NegativePlan();
+    }
+  }
+}
+
+module MainFitTest(){
+  for (top = [0,1]) {
+    translate([ top * (mount_dist*2 + mount_width), 0,0 ]){
+      intersection(){
+	translate([0, 0, (-main_height + 0.5) * top])
+	  Main();
+	translate([-50,-50,0])
+	  cube([100,100, spike_botpos_height + 1.5]);
+      }
+    }
+  }
+}
+
+module Tests(){
+  translate([-mount_dist*3, 0,0])
+    PlanTest();
+  MainFitTest();
+}
+
+module StrapFixingTest(){
+  intersection(){
+    Main();
+    translate([ -10, -10, 40 ])
+      cube([ 20, 40, 15 ]);
+  }
+}
+
+//Tests();
+//StrapFixingTest();
+Main();