bushing.scad

   1 // PRUSA Mendel
   2 // Bushings
   3 // GNU GPL v3
   4 // Josef Průša
   5 // josefprusa@me.com
   6 // prusadjs.cz
   7 // http://www.reprap.org/wiki/Prusa_Mendel
   8 // http://github.com/prusajr/PrusaMendel
   9
  10 use <configuration.scad>
  11
  12 /**
  13  * @id bushing
  14  * @name Bushing
  15  * @category Printed
  16  * @id bushing
  17  */
  18
  19
  20
  21 module bushing(stiff, lenght=11){
  22         difference(){
  23                 union(){
  24                         translate(v=[-7.5,-8,0])cube(size = [15,8,lenght]);
  25                         cylinder(h = lenght, r=7.5);
  26                 }
  27         //cutout inside
  28         //Opening
  29         rotate(a=[0,0,45]) translate(v=[1,1,-1]) cube(size = [16,16,lenght+2]);
  30         //Cutouts to make it more bendy
  31         if(stiff){
  32                 translate(v=[-4.8,-6,-1]) cube(size = [0.8,6,lenght+2]);
  33                 translate(v=[4,-6,-1]) cube(size = [0.8,6,lenght+2]);
  34         }else{
  35                 translate(v=[-4.8,-8,-1]) cube(size = [0.8,8,lenght+2]);
  36                 translate(v=[4,-8,-1]) cube(size = [0.8,8,lenght+2]);
  37         }
  38         translate(v=[0,5,(lenght+2)/2]) cube(size = [7,8,lenght+2], center=true);
  39         translate(v=[0,0,-1]) cylinder(h = lenght+2, r=5);
  40         }
  41 }
  42
  43
  44 module standart_bushing(){
  45
  46 difference(){translate(v=[0,5,8])rotate(a=[90,0,0]){
  47 bushing(false, 10);
  48 translate(v=[-7,-13,0])cube(size = [14,5,10]);
  49 translate(v=[-2,-13,-3])cube(size = [4,5,16]);
  50 translate(v=[-2,-12,-3])cube(size = [4,7.5,2]);
  51 translate(v=[-2,-12,11])cube(size = [4,7.5,2]);
  52 }
  53 translate(v=[-3,-1,-16])rotate(a=[45,0,0])cube(size = [6,5,16]);
  54
  55 mirror([ 0, 1, 0 ]) translate(v=[-3,-1,-16])rotate(a=[45,0,0])cube(size = [6,5,16]);}
  56 }
  57
  58
  59 // Includes small cutouts for better prints
  60 module vertical_bushing(stiff, lenght){
  61 difference(){
  62 bushing(stiff, lenght);
  63 translate(v=[-5,0,-1]) cube(size = [10,2.5,lenght+2]);
  64 }
  65 }
  66
  67
  68 //vertical_bushing(true, 11);
  69
  70 module z_bushings(){
  71 // STUFF FOR X-ENDS
  72 difference(){
  73 // Slider.
  74 translate([0,6.5,30])
  75 cube([23,17,60],center=true);
  76 // Slider cutout.
  77 translate([0,10,32.5])
  78 cube([17,17,70],center=true);
  79 }
  80 union(){translate([0,9.5,0])vertical_bushing(true,13);
  81         //translate([0,4,0.5])cube(size = [8,2,1], center = true);
  82         //translate([0,4,12.5])cube(size = [8,2,1], center = true);
  83         translate([0,9.5,48])vertical_bushing(true,13);
  84         //translate([0,4,48+0.5])cube(size = [8,2,1], center = true);
  85         //translate([0,4,48+12.5])cube(size = [8,2,1], center = true);
  86         translate([0,9.5,32])
  87         {
  88                 difference()
  89                 {
  90                         bushing(true,16);
  91                         translate([0,3,2])
  92                         rotate([45,0,0])
  93                         cube([16,30,16], center=true);
  94                 }
  95         }
  96 }
  97 }
  98
  99
 100 // Linear bushing options
 101
 102 lme8uu = true;
 103
 104 lm8uu_diameter=(lme8uu==true) ? 16 : 15;
 105 lm8uu_length=24;
 106 lm8uu_radius = lm8uu_diameter / 2;
 107 block_height = 2*lm8uu_length+17;
 108
 109
 110
 111 //z_bushings();
 112 //
 113 //linear_holder_base(60);
 114 //cut_corners(true, false, true, false);
 115
 116 module cut_corners(lf,lb,rf,rb){
 117         difference(){
 118         lm8uu_bearing_holder();
 119         if(lf) translate(v=[(10)-3,(-28.5/2)+3,0]) rotate(a=[0,0,45]) rotate(a=[35,0,0]) translate(v=[0,-5,0]) cube(size = [20,10,20], center = true);
 120         if(lb)translate(v=[(-10)+3,(-28.5/2)+3,0]) rotate(a=[0,0,-45]) rotate(a=[35,0,0]) translate(v=[0,-5,0]) cube(size = [20,10,20], center = true);
 121         mirror([ 0, 1, 0 ]){
 122         if(rf)translate(v=[(10)-3,(-28.5/2)+3,0]) rotate(a=[0,0,45]) rotate(a=[35,0,0]) translate(v=[0,-5,0]) cube(size = [20,10,20], center = true);
 123         if(rb)translate(v=[(-10)+3,(-28.5/2)+3,0]) rotate(a=[0,0,-45]) rotate(a=[35,0,0]) translate(v=[0,-5,0]) cube(size = [20,10,20], center = true);
 124         }
 125 }
 126 //lm8uu_bearing_holder();
 127 }
 128
 129 module linear_holder_base(length){
 130
 131 difference(){
 132 union(){
 133 //main block
 134 translate(v=[-(lm8uu_radius+2.5)/2,0,block_height/2]) cube(size = [lm8uu_radius+2.5,lm8uu_diameter+5,block_height], center = true);
 135 //translate(v=[-5,0,length/2]) cube(size = [10,20,length], center = true);
 136
 137 //holder for main block in x-end
 138 // leaving it out now
 139 //translate(v=[0,0,0]) cylinder(h = length, r=10, $fn=60);
 140
 141 //translate(v=[-5,0,15.8/2]) cube(size = [12,23,15.8], center = true);
 142 translate(v=[0,0,0]) cylinder(h = block_height, r=lm8uu_radius+2.5, $fn=60);
 143 }
 144 //main axis
 145 translate(v=[0,0,-2]) cylinder(h = length+4, r=(lm8uu_diameter+0.8)/2, $fn=50);
 146 // not needed for zip tie
 147 //main cut
 148 translate(v=[10,0,length/2]) cube(size = [20,14,length+4], center = true);
 149 //smooth entry cut
 150 translate(v=[12,0,length/2]) rotate(a=[0,0,45]) cube(size = [20,20,length+4], center = true);
 151 }
 152 }
 153
 154
 155 module y_linear_bearings(){
 156         difference(){
 157                 union(){
 158 translate(v=[0,0,1.5]) cube(size = [26,14,3], center = true);
 159 translate(v=[-13,0,0])rotate(a=[0,0,30])cylinder(h = 3, r=7, $fn=6);
 160 translate(v=[13,0,0])rotate(a=[0,0,30])cylinder(h = 3, r=7, $fn=6);
 161 }
 162
 163
 164 translate(v=[-14,0,0])polyhole(m3_diameter, 10);
 165 translate(v=[14,0,0])polyhole(m3_diameter, 10);
 166 //hack
 167 translate(v=[0,14.25,4.5]) rotate(a=[90,0,0]) translate(v=[0,9.5,0]) rotate(a=[0,0,90]){
 168         translate(v=[0,0,lm8uu_length/2+0.5]) ziptie();
 169 }
 170 }
 171
 172 cut_corners(true, true, true, true);
 173
 174
 175
 176 }
 177
 178 lm8uu_holder_length = lm8uu_length+4.5;
 179 lm8uu_holder_width= lm8uu_diameter+5;
 180
 181 module lm8uu_bearing_holder(){
 182 translate(v=[0,14.25,4.5])rotate(a=[90,0,0])translate(v=[0,9.5,0]) rotate(a=[0,0,90]){
 183
 184 difference(){
 185         union(){
 186                 linear_holder_base(lm8uu_length+4.5);
 187                 translate(v=[-10-2,0,lm8uu_holder_length/2]) cube(size = [4,20,lm8uu_holder_length], center = true);
 188         }
 189         translate(v=[0,0,12.5]) ziptie();
 190 }
 191
 192
 193 translate(v=[-(10-5.5)/2-5.5,0,0.75]) cube(size = [10-5.5,20,1.5], center = true);
 194 translate(v=[-(10-5.5)/2-5.5,0,lm8uu_length+3.75]) cube(size = [10-5.5,20,1.5], center = true);
 195
 196 }
 197 }
 198
 199 module lm8uu_bearing_cut()
 200         {
 201                 translate([-lm8uu_holder_width/2,-lm8uu_holder_length/2,-5])cube([lm8uu_holder_width,lm8uu_holder_length,20]);
 202         }
 203
 204
 205 module z_linear_bearings(){
 206
 207         translate(v=[0,9.5,0]) rotate(a=[0,0,90]){
 208                 //difference(){
 209                         linear_holder_base(65);
 210                 //      translate(v=[0,0,14.5+2]) ziptie();
 211                 //      translate(v=[0,0,block_height-(12+2)-5]) ziptie();
 212                 //}
 213
 214                 //x-end adapter
 215                 //difference(){
 216                 //      translate(v=[-6,0,15.8/2]) cube(size = [10,23,15.8], center = true);
 217                 //      translate(v=[0,0,-2]) cylinder(h = 20, r=7.9, $fn=50);
 218                 //}
 219                 translate(v=[-(10-5.5)/2-lm8uu_radius+2,0,0+1]) cube(size = [10-5.5,20,2], center = true);
 220                 //translate(v=[-(10-5.5)/2-lm8uu_radius+2,0,lm8uu_length+4.0]) cube(size = [10-5.5,20,2], center = true);
 221                 //translate(v=[-(10-5.5)/2-lm8uu_radius+2,0,64-lm8uu_length-3]) cube(size = [10-5.5,20,2], center = true);
 222                 translate(v=[-(10-5.5)/2-lm8uu_radius+2,0,64]) cube(size = [10-5.5,20,2], center = true);
 223         }
 224 }
 225
 226 module ziptie(){
 227 difference(){
 228 translate(v=[0,0,0]) cylinder(h = 3.9, r=lm8uu_diameter);
 229 translate(v=[0,0,0]) cylinder(h = 5, r=lm8uu_diameter-3, $fn=50);
 230 translate(v=[0,0,3]) cylinder(h = 1, r1=lm8uu_diameter-3, r2=lm8uu_diameter, $fn=50);
 231 }}
 232
 233
 234 z_linear_bearings();
 235