bearing-guide.scad

   1 // PRUSA iteration3
   2 // Bearing guide
   3 // GNU GPL v3
   4 // Josef Průša <josefprusa@me.com>
   5 // Václav 'ax' Hůla <axtheb@gmail.com>
   6 // Original design by Greg Frost
   7 // http://www.reprap.org/wiki/Prusa_Mendel
   8 // http://github.com/prusajr/PrusaMendel
   9
  10
  11 /**
  12  * Helps to hold belt aligned on the bearing.
  13  * @id bearing-guide
  14  * @name Bearing guide
  15  * @category Printed
  16  */
  17
  18 include <configuration.scad>
  19
  20 thickness=0.9;
  21 height=7+thickness;
  22 wall_ascent=3;
  23 wall_descent=0.5;
  24
  25 module inner()
  26 {
  27     difference()
  28     {
  29         #cylinder(r=idler_size/2+single_wall_width,h=height);
  30         translate([0,0,-1])
  31             cylinder(r=idler_size/2,h=height+2);
  32     }
  33
  34     difference()
  35     {
  36         cylinder(r=idler_size/2+wall_ascent,h=thickness);
  37         translate([0,0,-1])
  38             cylinder(r=idler_size/2-wall_descent,h=thickness+2);
  39     }
  40 }
  41
  42 module outer()
  43 {
  44     difference()
  45     {
  46         cylinder(r=idler_size/2+2*single_wall_width+0.3,h=height);
  47         translate([0,0,-1])
  48             cylinder(r=idler_size/2+single_wall_width+0.3,h=height+2);
  49     }
  50
  51     difference()
  52     {
  53         cylinder(r=idler_size/2+wall_ascent,h=thickness);
  54         translate([0,0,-1])
  55             cylinder(r=idler_size/2-wall_descent,h=thickness+2);
  56     }
  57 }
  58
  59 inner();
  60 translate([idler_size+2*wall_ascent+2,0,0])
  61     outer();
  62
  63 translate([0,idler_size+2*wall_ascent+2,0]){
  64 inner();
  65 translate([idler_size+2*wall_ascent+2,0,0])
  66     outer();
  67 }