sprinkler-spike-receptacle.scad

   1 // -*- C -*-
   2
   3 main_height = 95;
   4
   5 spike_web_thick = 2.52 + 0.5;
   6
   7 spike_top_width = 21.04;
   8
   9 spike_botpos_height = 9.5;
  10 spike_botpos_width = 11.68;
  11
  12 topwall_width = 1.5;
  13
  14 mount_dist = 20;
  15 mount_width = 10;
  16 mount_height = 5;
  17 mount_hole_dia = 4.5;
  18 mount_head_dia = 7.5;
  19 mount_hole_th = 2.5;
  20
  21 // calculated
  22
  23 main_width = spike_top_width + topwall_width*2;
  24
  25 pos_web_thick = spike_web_thick + topwall_width*2;
  26
  27 module NegativePlan(){
  28   x4z =
  29     (spike_top_width - spike_botpos_width) /
  30     (main_height - spike_botpos_height);
  31
  32   x0 = (spike_botpos_width - x4z * spike_botpos_height)/2;
  33   x1 =  spike_top_width/2;
  34   z1 = main_height;
  35
  36   polygon([[ x0, -5],
  37            [ x0, 0],
  38            [ x1, z1],
  39            [ x1, z1+5],
  40            [-x1, z1+5],
  41            [-x1, z1],
  42            [-x0, 0],
  43            [-x0, -5]]);
  44 }
  45
  46 module PositivePlan(){
  47   w = main_width;
  48   translate([ -w/2, 0 ])
  49     square([ w, main_height ]);
  50 }
  51
  52 module MultiplySolidifyPlan(th){
  53   for (r=[0,90]) {
  54     rotate([0,0,r])
  55       rotate([90,0,0])
  56       translate([0,0,-th/2])
  57       linear_extrude(height=th)
  58       children(0);
  59   }
  60 }
  61
  62 module MultiplyForMount(){
  63   for (r=[0:90:270])
  64     rotate([0,0,r])
  65     children(0);
  66 }
  67
  68 module Mount(){
  69   translate([ -1,
  70               -mount_width/2,
  71               0 ])
  72     cube([ mount_dist + mount_width/2 + 1,
  73            mount_width,
  74            mount_height ]);
  75 }
  76
  77 module MountHole(){
  78   translate([ mount_dist, 0,0 ]) {
  79     translate([0,0, -1])
  80       cylinder(r= mount_hole_dia/2, h= 20, $fn=20);
  81     translate([0,0, mount_hole_th])
  82       cylinder(r = mount_head_dia/2, h=20, $fn=20);
  83   }
  84 }
  85
  86 module Main(){
  87   difference(){
  88     union(){
  89       MultiplySolidifyPlan(pos_web_thick) PositivePlan();
  90       MultiplyForMount() Mount();
  91     }
  92     MultiplySolidifyPlan(spike_web_thick) NegativePlan();
  93     MultiplyForMount() MountHole();
  94   }
  95 }
  96
  97 module PlanTest(){
  98   linear_extrude(height=2.0){
  99     difference(){
 100       PositivePlan();
 101       NegativePlan();
 102     }
 103     difference(){
 104       circle(r = spike_botpos_width/2 + 5);
 105       circle(r = spike_botpos_width/2);
 106       translate([-50, 0]) square([100,50]);
 107     }
 108   }
 109   linear_extrude(height=4.0){
 110     difference(){
 111       translate([ -main_width/2, 0 ]) square([ main_width, 2 ]);
 112       NegativePlan();
 113     }
 114   }
 115 }
 116
 117 module MainFitTest(){
 118   intersection(){
 119     translate([0,0, -main_height + 0.5])
 120       Main();
 121     translate([-50,-50,0])
 122       cube([100,100,100]);
 123   }
 124 }
 125
 126 //PlanTest();
 127 //Main();
 128 MainFitTest();