rackable/19to22adapter/19to22adapter.escad

   1 // 19 to 22 inch rack adapter
   2
   3 // Change these to adjust the total adapter size
   4 full_length = 80;
   5 full_width = 44.23;
   6 full_height = 45;
   7
   8 // Change these to adjust the interface to your device
   9 support_bracket_thickness = 10;
  10 support_bracket_base_thickness = 2.5;
  11 support_bracket_hole_y_offset = 18;
  12 support_bracket_hole_z_offset = 18;
  13 support_bracket_hole_r = 2;
  14
  15 // Change these to adjust the interface to your rack (should be standard)
  16 rack_mount_length = 20;
  17 rack_mount_thickness = 2.5;
  18 rack_mount_hole_r = 6.5 / 2;
  19 rack_mount_hole_x_offset = (11.75 / 2) + 5.3;
  20 rack_mount_hole_y_offset = rack_mount_hole_r + 2.9;
  21
  22 // Add two triangle supports that end at the start of the interface to the rack.
  23 module dual_supports(length, width, height, support_length, support_thickness, support_base_thickness) {
  24   difference() { // Extra triangle supports on both sides of the Y axis
  25     translate([support_base_thickness, 0, 0])
  26       linear_extrude(height(x, y) = (-width / support_length) * x + width) square(size = [support_length, width]);
  27     translate([support_base_thickness, support_thickness, 0])
  28       linear_extrude(height) square(size = [support_length, width - support_thickness * 2]);
  29   }
  30 }
  31
  32 // Create our basic L-shaped bracket
  33 module l_bracket(length, width, height, rack_thickness, support_base_thickness) {
  34   difference() { // Cut our L bracket
  35     linear_extrude(height) square(size = [length, width]);
  36
  37     translate([0,0, rack_thickness])
  38       linear_extrude(height)
  39       translate([support_base_thickness, 0]) square(size = [length, width]);
  40   }
  41 }
  42
  43 // Cuts the bolt holes for attachingto the rack
  44 module rack_bolt_holes(height, x_offset, y_offset, rack_hole_r) {
  45   // Holes for rackmount
  46   translate([x_offset, y_offset, 0])
  47     linear_extrude(height) circle(r = rack_hole_r);
  48 }
  49
  50 module support_screw_hole(height, y_offset, z_offset, support_hole_r) {
  51   translate([-1, y_offset, z_offset]) rotate(a = [0, 90])
  52     linear_extrude(height) circle(r = support_hole_r);
  53 }
  54
  55 // Builds the full object
  56 module rack_adapter(length, width, height, rack_length, rack_thickness, rack_hole_r, rack_hole_x_offset, rack_hole_y_offset, support_thickness, support_base_thickness, support_hole_y_offset, support_hole_z_offset, support_hole_r) {
  57
  58   support_length = length - rack_length;
  59
  60   difference() { // For adding the screw holes
  61
  62     union(r = 0) { // Combine supports with L bracket
  63       dual_supports(length, width, height, support_length, support_thickness, support_base_thickness);
  64       l_bracket(length, width, height, rack_thickness, support_base_thickness);
  65     }
  66
  67     // Holes for rackmount
  68     rack_bolt_holes(height, rack_hole_x_offset + support_length, width - rack_hole_y_offset, rack_hole_r);
  69     rack_bolt_holes(height, rack_hole_x_offset + support_length, rack_hole_y_offset, rack_hole_r);
  70
  71     // Holes for mounting to unit
  72
  73     support_screw_hole(height, support_hole_y_offset, support_hole_z_offset, support_hole_r);
  74     support_screw_hole(height, width - support_hole_y_offset, support_hole_z_offset, support_hole_r);
  75     support_screw_hole(height, support_hole_y_offset, height - support_hole_z_offset, support_hole_r);
  76     support_screw_hole(height, width - support_hole_y_offset, height - support_hole_z_offset, support_hole_r);
  77   }
  78 }
  79
  80 // Call the main construct
  81 rack_adapter(full_length, full_width, full_height, rack_mount_length, rack_mount_thickness, rack_mount_hole_r, rack_mount_hole_x_offset, rack_mount_hole_y_offset, support_bracket_thickness, support_bracket_base_thickness, support_bracket_hole_y_offset, support_bracket_hole_z_offset, support_bracket_hole_r);
  82