box_frame/extras/endstop-holder-extra.scad

   1 // PRUSA Mendel
   2 // Endstop holder extra adapter rotator
   3 // Used to rotate endstops for Prusa i2/i3 endstop holders
   4 // GNU GPL v3
   5 // Ethan Sherman
   6 // ethan@blackguest.net
   7
   8 include <../configuration.scad>
   9
  10 /**
  11  * This endstop adapter has 3 holes for endstops with either 10mm or 20mm spacing.
  12  * It is designed to fit on the original endstop-holder to rotate a mechanical endstop 90 degrees.
  13  *
  14  * @id endstop-holder-extra
  15  * @name Endstop holder extra
  16  * @category Printed
  17  */
  18 module endstop_extra(shaft_radius){
  19     screw_hole_spacing = 20;
  20     screw_hole_spacing2 = 10;
  21
  22     segments=64;
  23
  24     difference(){
  25             union(){
  26             // for reference, here is the main endstop arm
  27                     //translate([-30, 0, 0]) cube([40, 4, 10]);
  28
  29             // endstop arm mount
  30             translate([-20, -35.99, -5]) cube([10, 35, 5]);
  31             // main sliding endstop mount slider plate
  32             translate([-30, -5, -5]) cube([30, 5, 15]);
  33             // extra overhang support (may not be easy to print in this orientation)
  34             //#translate([-30, -0, -5]) cube([30, 6, 5]);
  35
  36             // extra curved arm support (optional)
  37             difference(){
  38                 translate([-30, -15, -5]) cube([30, 11, 5]);
  39                 translate([-10, -10, -10]) rotate([0, 0, 90])
  40                     translate([-5, -10, -1]) rotate([0, 0, 0]) cylinder(h =20, r = 10, $fn = segments);
  41                 translate([-40, -10, -10]) rotate([0, 0, 90])
  42                     translate([-5, -10, -1]) rotate([0, 0, 0]) cylinder(h =20, r = 10, $fn = segments);
  43             }
  44             }
  45
  46         // main slot
  47         for (z = [0:20]){
  48             translate([-(5+screw_hole_spacing) + z, 7, 5]) rotate([90, 0, 0]) cylinder(h =20, r = m3_diameter/2, $fn = segments);
  49         }
  50
  51         // small m2 holes
  52         translate([-25, -8, -10]) rotate([0, 0, 90]){
  53             translate([-5, -10, -1]) rotate([0, 0, 0]) cylinder(h =20, r = m2_diameter/2, $fn = segments);
  54             translate([-(5+screw_hole_spacing), -10, -1]) rotate([0, 0, 0]) cylinder(h =20, r = m2_diameter/2, $fn = segments);
  55             translate([-(5+screw_hole_spacing2), -10, -1]) rotate([0, 0, 0]) cylinder(h =20, r = m2_diameter/2, $fn = segments);
  56         }
  57     }
  58 }
  59
  60 rotate([-90, 0, 0]) endstop_extra(bushing_xy[0]);