challenge-bot.com Git - challenge-bot/blob - caster-standoff.scad

   1 // challenge-bot
   2 // GNU AGPLv3 (or later at your option)
   3 // project available at these locations:
   4 // https://gitorious.org/ozzloy/challenge-bot
   5 // https://github.com/waynegramlich/challenge-bot
   6
   7 $fn = 100;
   8
   9 module ball_screws(){
  10   between = 14.732;
  11   screw_radius = 2.286/2;
  12   screw_length = 20;
  13   translate([between/2, 0, 0]) cylinder(h = screw_length, r = screw_radius);
  14   translate([-between/2, 0, 0]) cylinder(h = screw_length, r = screw_radius);}
  15
  16 module fixture(){
  17   height = 2.9464;
  18   width = 20.32;
  19   between = 14.732;
  20   side_radius = (width - between)/2;
  21   translate([between/2, 0, 0]) cylinder(h = height, r = side_radius);
  22   translate([-between/2, 0, 0]) cylinder(h = height, r = side_radius);
  23   }
  24
  25 module caster_standoff(){
  26   height = 43;
  27   caster_radius = 14.732/2;
  28   difference(){
  29     union(){
  30       cylinder(h = height, r = caster_radius);
  31       fixture();}
  32     scale([1, 1, 1.1]) translate([0, 0, -.1]) ball_screws();}}
  33
  34 caster_standoff();