x-carriage.scad

   1 // PRUSA iteration3
   2 // X carriage
   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 // mounting plate
  12 use <extras/groovemount.scad>
  13
  14 carriage_l = 74;
  15 carriage_hole_to_side = 5;
  16 carriage_hole_height = 4;
  17
  18
  19 module x_carriage(){
  20     mirror([1,0,0]) {
  21         difference() {
  22             union() {
  23                 //upper bearing
  24                 rotate([0,0,180]) {
  25                     if (bearing_choice == 2) {
  26                         linear_bearing(fillet = true);
  27                     } else {
  28                         linear_bushing(27);
  29                     }
  30                 }
  31
  32                 //lower bearing
  33                 translate([xaxis_rod_distance,0,0]) {
  34                     if (bearing_choice == 2) {
  35                         linear_bearing(carriage_l, fillet = true);
  36                     } else {
  37                         linear_bushing(carriage_l);
  38                     }
  39                 }
  40
  41                 // main plate
  42                 //difference(){
  43                 translate([5.5,-10,0]) cube_fillet([xaxis_rod_distance - 11,5,carriage_l], radius=2);
  44                 //translate([55,-17.5, 67]) rotate([0,70,0]) cube([80,60,60], center = true);
  45                 //}
  46
  47                 //reduce springiness
  48
  49                 translate([6,5,20]) cube([xaxis_rod_distance - 13,5,8]);
  50
  51
  52             translate([20,0,carriage_hole_to_side]) {
  53                 rotate([90,0,0]) cylinder(r=(carriage_hole_to_side > 5 ? 5 : carriage_hole_to_side), h=12, center=true);
  54                 }
  55             translate([20,0,carriage_l - carriage_hole_to_side]) {
  56                rotate([90,0,0]) cylinder(r=(carriage_hole_to_side > 5 ? 5 : carriage_hole_to_side), h=12, center=true);
  57                 }
  58
  59                 translate([45/2,0,0]){
  60
  61                     // belt dummy
  62                     %translate([0,0,carriage_l/2]) cube([20,6,carriage_l], center = true);
  63
  64                     //belt flat side
  65                     difference() {
  66                     translate([-13.5,0,carriage_l/2]) cube_fillet([7,14,carriage_l], vertical = [3,3,0,0], center = true);
  67                     translate([-45/2,0,0]) bushing_negative();
  68                     }
  69
  70                     difference(){
  71                         translate([-3.0,0,carriage_l/2]) cube_fillet([11,14,carriage_l], vertical = [2,2,0,0], center = true);
  72 #translate([-3.5,0,carriage_l/2]) cube([13,10,40], center = true);
  73
  74                         intersection() {
  75                             for (i = [0 : carriage_l/belt_tooth_distance])
  76                             {
  77                                 translate([-8.5, 0, 1+i*belt_tooth_distance]) cube([2, 10, belt_tooth_distance*belt_tooth_stride], center = true);
  78                             }
  79                             translate([0, 0, carriage_l/2]) cube([20, 10, carriage_l], center = true);
  80                         }
  81                     }
  82
  83                 }
  84             }
  85             #translate([20,-2,carriage_hole_to_side]) {
  86                 rotate([90,0,0]) cylinder(r=2.2, h=22, center=true);
  87                 translate([0,3,0]) rotate([90,90,0]) cylinder(r=9/2, h=carriage_hole_height, $fn=6, center=true);
  88                 translate([0,3,-3]) cube([8,carriage_hole_height,8], center=true);
  89             }
  90             #translate([20,-2,carriage_l-carriage_hole_to_side]) {
  91                 rotate([90,0,0]) cylinder(r=2.2, h=22, center=true);
  92                 translate([0,3,0]) rotate([90,90,0]) cylinder(r=9/2, h=carriage_hole_height, $fn=6, center=true);
  93                 translate([0,3,3]) cube([8,carriage_hole_height,8], center=true);
  94             }
  95
  96         }
  97     }
  98
  99     module holding_plate(){
 100         translate([13,-10,0]){
 101             difference(){
 102                 translate([2.5-13.8/2, -17.5,35]) cube([5,35,carriage_l], center = true);
 103                 translate([2.5-13.8/2, -17.5,35]) cube([7,25,25], center = true);
 104                 translate([0,-17.5, 35-25]) rotate([0,-90,0]) cylinder(h = 80, r=2.5, $fn=30);
 105                 translate([0,-17.5, 35+25]) rotate([0,-90,0]) cylinder(h = 80, r=2.5, $fn=30);
 106             }
 107
 108             %translate([-7, -18 ,carriage_l/2]) rotate([-90,0,90]) groovemount();
 109         }
 110     }
 111 }
 112
 113 x_carriage();
 114 //holding_plate();