box_frame/configuration.scad.dist

   1 // PRUSA iteration3
   2 // Configuration file
   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 <inc/metric.scad>;
  10 include <inc/conf_bushing.scad>;
  11
  12 // Custom settings here, tailor to your supplies and print settings
  13
  14 layer_height = 0.3;
  15 width_over_thickness = 2.2;
  16
  17 // Select your belt type ******************************************************
  18
  19 //T2.5
  20 belt_tooth_distance = 2.5;
  21 belt_tooth_ratio = 0.75;
  22
  23 //T5 (strongly discouraged)
  24 //belt_tooth_distance = 5;
  25 //belt_tooth_ratio = 0.75;
  26
  27 //HTD3
  28 //belt_tooth_distance = 3;
  29 //belt_tooth_ratio = 0.75;
  30
  31 //MXL
  32 //belt_tooth_distance = 2.032;
  33 //belt_tooth_ratio = 0.64;
  34
  35 //GT2 there is bunch of GT2 belts with different tooth-to-tooth distance
  36 //adjust to your needs
  37 //belt_tooth_distance = 2;
  38 //belt_tooth_ratio = 0.5;
  39
  40 // For T type belts you will probably want 0.8mm or so.
  41 belt_thickness = 1.75;
  42
  43 // Choose bearing/bushing configuration ***************************************
  44 // conf_b_* are in inc/conf_bushing.scad
  45
  46 bushing_xy = conf_b_lm8uu;
  47 bushing_z = conf_b_lm8uu;
  48 // for longer bearings use one shorter in x-carriage to make place for belt attachment
  49 // by default use same as xy
  50 bushing_carriage = bushing_xy;
  51
  52 // Select idler bearing size **************************************************
  53 // [outer_diameter, width, inner_diameter, uses_guide]
  54 // 608 [standard skate bearings] with bearing guide
  55 bearing_608 = [22, 7, 8, 1];
  56 //608 bearings with fender washers. Not good at all, the belt brushes against the carriage
  57 bearing_608_washers = [22, 10, 8, 0];
  58 // one 625 with guides
  59 bearing_625 = [16, 5, 5, 1];
  60 // two 625 - for use without bearing guides.
  61 bearing_625_double = [16, 10, 5, 0];
  62
  63 // those two here are really good:
  64 bearing_624_double = [13, 10, 4, 0];
  65 // this one has roughly same diameter as pulley, makes belt parallel so its prettier
  66 bearing_623_double = [10, 8, 3, 0];
  67
  68 idler_bearing = bearing_624_double;
  69
  70 //Select carriage lenght
  71 // 30 for single carriage extruder (two holes with centers 30mm apart)
  72 // 50 for wade or single with fan (three holes, 30-20)
  73 // 80 for full length carriage (four holes, 30-20-30)
  74
  75 carriage_l_base = 50;
  76
  77 // Fillets ********************************************************************
  78 // fillets are rounded corners of boxes. The right engineering term is probably radius
  79 // but cad software calls it fillet.
  80 // mostly cosmetic, except z axis.
  81 // 0 = no fillets
  82 // 1 = fillet
  83 // 2 = chamfer (cut the edges at 45deg. angle)
  84 // Please do put only parts with fillets on sale, other options are not really tested
  85
  86 use_fillets = 1;
  87
  88 //set to 0 for single plate (affects z axis and screws that attach RP parts to frame)
  89 i_am_box = 1;
  90
  91 //if you do your own plate and can move bottom Z screws 5mm up set this to 0 to
  92 //get stronger motor mount. Only for i_am_box = 0
  93 i_want_to_use_single_plate_dxf_and_make_my_z_weaker = 1;
  94
  95
  96 // Radius of long threaded rod on Y frame
  97
  98 // Affects y-axis-corner (both box and single plate)
  99 // and y-axis-bracket (box only)
 100
 101 //Use 5.4 for M10 or 4.4 for M8
 102 y_threaded_rod_long_r = 5.4;
 103
 104
 105 // Thickness of the boards that make the box frame.
 106
 107 // in y-axis-corner it governs the height of the corners by adjusting the
 108 // distance between ground and M10 threaded rod. (both box and single plate)
 109
 110 // For box model, the parts that hold Z smooth rod have one hole from front
 111 // and one from side, and this setting makes sure that the screw from side
 112 // is in the center of the plank.
 113
 114 // Use 12 for single plate
 115 // or 20 if you want to use the Y lm8uu holders
 116 // (extras/bearing-holder-single-plate-y)
 117 board_thickness = 12;
 118
 119 // segments of small holes. some poeple claim that a low value makes them easier to print.
 120 small_hole_segments=7;
 121
 122 // END of custom settings
 123
 124
 125 // You are not supposed to change this
 126 board_to_xz_distance = 26;
 127 xaxis_rod_distance = 45;
 128
 129 //calculated from settings
 130 single_wall_width = width_over_thickness * layer_height;
 131
 132 idler_width = (idler_bearing[1] > 7 ? idler_bearing[1] : 7) + 2.5 * idler_bearing[3] ;
 133
 134 //deltas are used to enlarge parts for bigger bearings
 135 xy_delta = ((bushing_xy[1] <= 7.7) ? 0 : bushing_xy[1] - 7.7) * 0.9;
 136 z_delta = (bushing_z[1] <= 7.7) ? 0 : bushing_z[1] - 7.7;
 137
 138 // CHANGE ONLY THE STUFF YOU KNOW
 139 // IT WILL REPLACE DEFAULT SETTING
 140
 141 // RODS
 142
 143 // threaded_rod_diameter = 0;
 144 // threaded_rod_diameter_horizontal = 0;
 145 // smooth_bar_diameter = 0;
 146 // smooth_bar_diameter_horizontal = 0;
 147
 148 // Nuts and bolts
 149
 150 // m8_diameter = 0;
 151 // m8_nut_diameter = 0;
 152
 153 // m4_diameter = 0;
 154 // m4_nut_diameter = 0;
 155
 156 // m3_diameter = 0;
 157 // m3_nut_diameter = 0;
 158
 159 // Bushing holder
 160
 161 // bushing_core_diameter = smooth_bar_diameter;
 162 // bushing_material_thickness = 0;
 163
 164 ///counted stuff
 165 m3_nut_diameter_bigger = ((m3_nut_diameter  / 2) / cos (180 / 6))*2;
 166
 167 // functions
 168 include <inc/functions.scad>
 169
 170 // These constants define the geometry of the complete-printer.scad
 171
 172 //x_smooth_rod_length=325;
 173 //y_smooth_rod_length=405;
 174 //z_smooth_rod_length=235;
 175 bed_x_size=225;
 176 bed_y_size=225;
 177
 178 x_smooth_rod_length=460+board_thickness*2; // 492 for 16mm thickness; 484 for 12mm thickness
 179 y_smooth_rod_length=470;
 180 z_smooth_rod_length=405;