box_frame/extras/endstop-holder.scad

   1 // PRUSA Mendel
   2 // Endstop holder
   3 // Used to attach endstops to 8mm rods
   4 // GNU GPL v3
   5 // Josef Průša
   6 // josefprusa@me.com
   7 // prusadjs.cz
   8 // http://www.reprap.org/wiki/Prusa_Mendel
   9 // http://github.com/prusajr/PrusaMendel
  10
  11 include <../configuration.scad>
  12
  13 /**
  14  * This endstop holder has 3 holes for endstops with either 10mm or 20mm spacing
  15  * @id endstop-holder
  16  * @name Endstop holder
  17  * @category Printed
  18  * @using 1 m3x20xhex
  19  * @using 1 m3nut
  20  * @using 2 m3washer
  21  */
  22 module endstop(shaft_radius){
  23     shaft_diameter=shaft_radius*2;
  24     outer_diameter = shaft_diameter/2+3.3;
  25     screw_hole_spacing = 20;
  26     screw_hole_spacing2 = 10;
  27     opening_size = shaft_radius*2-1.5; //openingsize
  28
  29     segments=64;
  30
  31     difference(){
  32             union(){
  33
  34
  35                     translate([outer_diameter, outer_diameter, 0]) cylinder(h =10, r = outer_diameter, $fn = segments);
  36                     translate([outer_diameter, 0, 0]) cube([15.5,outer_diameter*2,10]);
  37                     translate([-30, 0, 0]) cube([40, 4, 10]);
  38                     translate([17, 10+opening_size, 5]) rotate([90, 0, 0]) cylinder(h =5, r = 5.77, $fn = 6);
  39             }
  40
  41
  42
  43
  44             translate([9, outer_diameter-opening_size/2, 0]) cube([18,opening_size,20]);
  45             translate([outer_diameter, outer_diameter, 0]) cylinder(h =30, r = shaft_radius, $fn = segments);
  46
  47             //Securing hole
  48             translate([17, 20, 5]) rotate([90, 0, 0]) cylinder(h =20, r = m3_diameter/2, $fn = segments);
  49             translate([17, 12+opening_size, 5]) rotate([90, 0, 0]) cylinder(h =5, r = m3_nut_diameter_horizontal/2, $fn = 6);
  50
  51             translate([17, 17, 5]) rotate([90, 0, 0]) cylinder(h =20, r = m3_diameter/2, $fn = segments);
  52             // Endstop holders
  53             translate([-5, 17, 5]) rotate([90, 0, 0]) cylinder(h =20, r = m3_diameter/2, $fn = segments);
  54             translate([-(5+screw_hole_spacing), 17, 5]) rotate([90, 0, 0]) cylinder(h =20, r = m3_diameter/2, $fn = segments);
  55             translate([-(5+screw_hole_spacing2), 17, 5]) rotate([90, 0, 0]) cylinder(h =20, r = m3_diameter/2, $fn = segments);
  56
  57     }
  58 }
  59
  60 endstop(bushing_xy[0]);
  61 translate([0,22,0]) endstop(bushing_xy[0]);
  62 translate([0,44,0]) endstop(bushing_z[0]);
  63