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
  15 // Extruder settings **********************************************************
  16 // Don't forget to set your slicer's extruder settings to match the values you
  17 // enter here.
  18
  19 layer_height = 0.3;
  20 // Width over thickness determines how wide the plastic will be when extruded
  21 // onto the object that is being printed. width_over_thickness is multiplied
  22 // by the layer_height to calculate this width. i.e. If your layer_height is
  23 // set to 0.3 mm and your width_over_thickness is set to 2.2, the resulting
  24 // width will be 0.66 mm.
  25 width_over_thickness = 2.2;
  26
  27
  28 // Select your belt type ******************************************************
  29
  30 // T2.5
  31 belt_tooth_distance = 2.5;
  32 belt_tooth_ratio = 0.75;
  33
  34 // T5 (strongly discouraged)
  35 // belt_tooth_distance = 5;
  36 // belt_tooth_ratio = 0.75;
  37
  38 // HTD3
  39 // belt_tooth_distance = 3;
  40 // belt_tooth_ratio = 0.75;
  41
  42 // MXL
  43 // belt_tooth_distance = 2.032;
  44 // belt_tooth_ratio = 0.64;
  45
  46 // GT2 there is bunch of GT2 belts with different tooth-to-tooth distance
  47 // adjust to your needs
  48 // belt_tooth_distance = 2;
  49 // belt_tooth_ratio = 0.5;
  50
  51 // For T type belts you will probably want 0.8mm or so.
  52 belt_thickness = 1.75;
  53
  54
  55 // Choose bearing/bushing configuration ***************************************
  56 // conf_b_* are in inc/conf_bushing.scad
  57
  58 bushing_xy = conf_b_lm8uu;
  59 bushing_z = conf_b_lm8uu;
  60 // for longer bearings use one shorter in x-carriage to make place for belt attachment
  61 // by default use same as xy
  62 bushing_carriage = bushing_xy;
  63
  64
  65 // Select idler bearing size **************************************************
  66 // [outer_diameter, width, inner_diameter, uses_guide]
  67
  68 // 608 [standard skate bearings] with bearing guide
  69 bearing_608 = [22, 7, 8, 1];
  70 // 608 bearings with fender washers. Not good at all, the belt brushes against the carriage
  71 bearing_608_washers = [22, 10, 8, 0];
  72
  73 // one 625 with guides
  74 bearing_625 = [16, 5, 5, 1];
  75 // two 625 - for use without bearing guides.
  76 bearing_625_double = [16, 10, 5, 0];
  77
  78 // those two here are really good:
  79 bearing_624_double = [13, 10, 4, 0];
  80
  81 // this one has roughly same diameter as pulley, makes belt parallel so its prettier
  82 bearing_623_double = [10, 8, 3, 0];
  83
  84 idler_bearing = bearing_624_double;
  85
  86 // Select carriage lenght ******************************************************
  87 // 30 for single carriage extruder (two holes with centers 30mm apart)
  88 // 50 for wade or single with fan (three holes, 30-20)
  89 // 80 for full length carriage (four holes, 30-20-30)
  90
  91 carriage_l_base = 50;
  92
  93
  94 // Fillets ********************************************************************
  95 // fillets are rounded corners of boxes. The right engineering term is probably radius
  96 // but cad software calls it fillet.
  97 // mostly cosmetic, except z axis.
  98 // 0 = no fillets
  99 // 1 = fillet
 100 // 2 = chamfer (cut the edges at 45deg. angle)
 101 // Please do put only parts with fillets on sale, other options are not really tested
 102
 103 use_fillets = 1;
 104
 105 // set to 0 for single plate (affects z axis and screws that attach RP parts to frame)
 106 i_am_box = 1;
 107
 108 // if you do your own plate and can move bottom Z screws 5mm up set this to 0 to
 109 // get stronger motor mount. Only for i_am_box = 0
 110 i_want_to_use_single_plate_dxf_and_make_my_z_weaker = 1;
 111
 112
 113 // Radius of long threaded rod on Y frame
 114
 115 // Affects y-axis-corner (both box and single plate)
 116 // and y-axis-bracket (box only)
 117
 118 //Use 5.4 for M10 or 4.4 for M8
 119 y_threaded_rod_long_r = 5.4;
 120
 121
 122 // Thickness of the boards that make the box frame.
 123
 124 // in y-axis-corner it governs the height of the corners by adjusting the
 125 // distance between ground and M10 threaded rod. (both box and single plate)
 126
 127 // For box model, the parts that hold Z smooth rod have one hole from front
 128 // and one from side, and this setting makes sure that the screw from side
 129 // is in the center of the plank.
 130
 131 // Use 12 for single plate
 132 // or 20 if you want to use the Y lm8uu holders
 133 // (extras/bearing-holder-single-plate-y)
 134 board_thickness = 12;
 135
 136 // Segments of small holes. some poeple claim that a low value makes them easier to print.
 137 small_hole_segments=7;
 138
 139
 140 // END of custom settings *****************************************************
 141
 142
 143 // You are not supposed to change this
 144 board_to_xz_distance = 26;
 145 xaxis_rod_distance = 45;
 146
 147 //calculated from settings
 148 single_wall_width = width_over_thickness * layer_height;
 149
 150 idler_width = (idler_bearing[1] > 7 ? idler_bearing[1] : 7) + 2.5 * idler_bearing[3] ;
 151
 152 //deltas are used to enlarge parts for bigger bearings
 153 xy_delta = ((bushing_xy[1] <= 7.7) ? 0 : bushing_xy[1] - 7.7) * 0.9;
 154 z_delta = (bushing_z[1] <= 7.7) ? 0 : bushing_z[1] - 7.7;
 155
 156 // CHANGE ONLY THE STUFF YOU KNOW
 157 // IT WILL REPLACE DEFAULT SETTING
 158
 159 // RODS
 160
 161 // threaded_rod_diameter = 0;
 162 // threaded_rod_diameter_horizontal = 0;
 163 // smooth_bar_diameter = 0;
 164 // smooth_bar_diameter_horizontal = 0;
 165
 166 // Nuts and bolts
 167
 168 // m8_diameter = 0;
 169 // m8_nut_diameter = 0;
 170
 171 // m4_diameter = 0;
 172 // m4_nut_diameter = 0;
 173
 174 // m3_diameter = 0;
 175 // m3_nut_diameter = 0;
 176
 177 // Bushing holder
 178
 179 // bushing_core_diameter = smooth_bar_diameter;
 180 // bushing_material_thickness = 0;
 181
 182 ///counted stuff
 183 m3_nut_diameter_bigger = ((m3_nut_diameter  / 2) / cos (180 / 6))*2;
 184
 185 // functions
 186 include <inc/functions.scad>
 187
 188 // These constants define the geometry of the complete-printer.scad
 189
 190 //x_smooth_rod_length=325;
 191 //y_smooth_rod_length=405;
 192 //z_smooth_rod_length=235;
 193 bed_x_size=225;
 194 bed_y_size=225;
 195
 196 x_smooth_rod_length=460+board_thickness*2; // 492 for 16mm thickness; 484 for 12mm thickness
 197 y_smooth_rod_length=470;
 198 z_smooth_rod_length=405;