x-end.scad

   1 // PRUSA iteration3
   2 // X ends
   3 // GNU GPL v3
   4 // Josef Průša <josefprusa@me.com>
   5 // Václav 'ax' Hůla <axtheb@gmail.com>
   6 // http://www.reprap.org/wiki/Prusa_Mendel
   7 // http://github.com/prusajr/PrusaMendel
   8
   9 include <configuration.scad>
  10 use <bushing.scad>
  11 xaxis_rod_distance = 45;
  12
  13 module x_end_motor(){
  14     mirror([0,1,0]) {
  15
  16         x_end_base([3,3,0,0], thru=false);
  17         /// motor dummy
  18         //%translate([21-5,-21-11,25]) cube([42,42,42], center = true);
  19
  20
  21         difference(){
  22             union(){
  23                 translate([-13.75,-15,26]) cube_fillet([17.5,12,52], center = true, vertical=[0,0,3,1.5], top=[0,3,6,3]);
  24                 translate([-10,-34,9]) intersection(){
  25                     cube_fillet([10,37,18], center = true, vertical=[0,0,0,0], top=[0,3,5,3]);
  26                     translate([-10/2,10,-26]) rotate([45,0,0]) cube_fillet([10,60,60], radius=2);
  27                 }
  28                 translate([-15, -32, 30.25]) rotate([90, 0, 0])  rotate([0, 90, 0]) nema17(places=[1,0,1,1], h=10);
  29             }
  30
  31             // motor screw holes
  32             translate([21-5,-21-11,30.25]){
  33                 // belt hole
  34                 translate([-30,11,0]) cube([10,26,20], center = true);
  35                 //motor mounting holes
  36                 translate([-29, 0, 0]) rotate([0, 0, 0])  rotate([0, 90, 0]) nema17(places=[1,1,0,1], holes=true, shadow=5, $fn=7, h=8);
  37             }
  38         }
  39         //smooth rod caps
  40         translate([-22, -10, 0]) cube([17, 2, 15]);
  41         translate([-22, -10, 45]) cube([17, 2, 10]);
  42     }
  43 }
  44
  45
  46 module x_end_base(vfillet=[3,3,3,3], thru=true, len=40){
  47     difference(){
  48         union(){
  49             difference(){
  50                 translate([-13.75,-10+len/2,30]) cube_fillet([17.5,len,60], center = true, vertical=vfillet, top=[5,3,5,3]);
  51                 bushing_negative(60);
  52             }
  53             //rotate([0,0,0]) translate([0,-9.5,0])
  54             if (bearing_choice == 1) {
  55                 linear_bushing(60);
  56             } else {
  57                 linear_bearing(65);
  58             }
  59             // Nut trap
  60             difference(){
  61                 if ((bearing_choice != 1) || (bushing_type == 2)) {
  62                 translate([-2,17.5,4]) cube_fillet([16,18,8], center = true, vertical=[3,0,0,0]);
  63                 } else {
  64                 translate([-2,17.5,4]) cube_fillet([16,18,8], center = true, vertical=[3,0,0,3]);
  65                 }
  66
  67                 //bottom hole
  68                 translate([0,17,-1]) cylinder(h = 4, r=2.45);
  69                 //nut slid in
  70                 translate([5,17,4]) cube([21,9.5,4.1], center = true);
  71
  72                 translate([0,17,6.5]) cylinder(h = 4, r=2.45);
  73             }
  74         }
  75
  76         // belt hole
  77         translate([-5.5-10+1.5,22-9,30]) cube([10,55,32], center = true);
  78
  79         if(thru == true){
  80             translate([-14,-11,6]) rotate([-90,0,0]) pushfit_rod(8,50);
  81             translate([-14,-11,xaxis_rod_distance+6]) rotate([-90,0,0]) pushfit_rod(8,50);
  82         } else {
  83             translate([-14,-7,6]) rotate([-90,0,0]) pushfit_rod(8,50);
  84             translate([-14,-7,xaxis_rod_distance+6]) rotate([-90,0,0]) pushfit_rod(8,50);
  85         }
  86
  87
  88     }
  89
  90     //threaded rod
  91     translate([0,17,0]) %cylinder(h = 70, r=2.5);
  92
  93 }
  94
  95
  96 module x_end_idler(){
  97     difference() {
  98         x_end_base(len=42+idler_size_inner_r);
  99         // idler hole
 100         translate([0,17+6+idler_size_inner_r,30.25-((bearing_type==0)? 3 : 0)]) rotate([0,-90,0]) cylinder(h = 80, r=idler_size_inner_r-0.2, $fn=30);
 101         if (bearing_type == 0)
 102         translate([-9,17+6+idler_size_inner_r,30.25-3]) {
 103             rotate([0,-90,0]) cylinder(h = 10, r=idler_size/2+4, $fn=30);
 104             translate([-5,10,0]) cube([10,20,idler_size+8], center=true);
 105         }
 106     }
 107 }
 108
 109 mirror([0,0,0]) x_end_idler(thru=true);
 110 // translate([40,40,0]) x_end_idler(thru=false);
 111 translate([40,0,0]) x_end_motor();
 112
 113 module pushfit_rod(diameter,length){
 114     cylinder(h = length, r=diameter/2, $fn=30);
 115     translate([0,-diameter/4,length/2]) cube([diameter,diameter/2,length], center = true);
 116
 117     translate([0,-diameter/2-1.2,length/2]) cube([diameter,1,length], center = true);
 118 }