HCoop / clinton / prusa3.git / blame
| Commit | Line | Data |
|---|---|---|
| 1ab13332 DR |
1 | include <configuration.scad> |
| 2 | ||
| 3 | module boltTrack(width, length, height) { | |
| 4 | hwidth = width / 2; | |
| 5 | hdiff = hwidth - height; | |
| 6 | union() { | |
| 7 | difference() { | |
| 8 | rotate([90, 0, 0]) | |
| 9 | translate([hwidth, height, -length]) | |
| 10 | cylinder(h=length, r=hwidth, $fn=12); | |
| 11 | ||
| 12 | if (height < hwidth) { | |
| 13 | translate([0, -1, height - hwidth - 1]) | |
| 14 | cube([width, length + 2, hdiff + 1]); | |
| 15 | } | |
| 16 | } | |
| 17 | cube([width, length, height]); | |
| 18 | } | |
| 19 | } | |
| 20 | ||
| 21 | ||
| 22 | module yrodbracket(lip_thickness, lip_length) { | |
| 23 | innerRadius = threaded_rod_diameter / 2; | |
| 24 | outerRadius = innerRadius + lip_thickness; | |
| 25 | r_head = 3.5; // FIXME: stolen from screw() in inc/functions.scad | |
| 26 | r_screw = 2; | |
| 27 | screw_margin = r_head + 2; | |
| 28 | holeOuterDiameter = r_screw + screw_margin * 2; | |
| 29 | holeCenter = holeOuterDiameter / 2; | |
| 30 | width = threaded_rod_diameter + holeOuterDiameter * 2; | |
| 31 | middle = width / 2; | |
| 32 | height = outerRadius + innerRadius; | |
| 33 | ||
| 34 | depth = holeOuterDiameter * 2 + lip_thickness; | |
| 35 | ||
| 36 | function pythag(a, b) = sqrt(a * a + b * b); | |
| 37 | function bevelradius(x, y, bevel) = pythag(x, y) - bevel * max(x, y) / min(x, y); | |
| 38 | ||
| 39 | xzbevel = bevelradius(width, board_thickness, 2.0); | |
| 40 | yzbevel = bevelradius(depth, board_thickness, 2.0); | |
| 41 | difference() { | |
| 42 | union() { | |
| 43 | intersection() { | |
| 44 | cube([width, depth, board_thickness]); | |
| 45 | translate([width / 2, depth / 2, board_thickness / 2]) | |
| 46 | rotate([0, 45, 0]) | |
| 47 | cube([xzbevel, depth, xzbevel], center=true); | |
| 48 | translate([width / 2, depth / 2, board_thickness / 2]) | |
| 49 | rotate([45, 0, 0]) | |
| 50 | cube([width, yzbevel, yzbevel], center=true); | |
| 51 | ||
| 52 | } | |
| 53 | translate([0, 0, -lip_length]) | |
| 54 | cube([width, lip_thickness, lip_length + lip_thickness]); | |
| 55 | } | |
| 56 | translate([holeOuterDiameter, -1, -lip_length - lip_thickness]) | |
| 57 | boltTrack(threaded_rod_diameter, depth + 2, lip_length + lip_thickness + innerRadius); | |
| 58 | ||
| 59 | // screw holes | |
| 60 | for (x = [holeCenter, width - holeCenter]) { | |
| 61 | for (y = [lip_thickness + holeCenter, holeOuterDiameter + lip_thickness + holeCenter]) { | |
| 62 | translate([x, y, board_thickness]) | |
| 63 | rotate([180, 0, 0]) | |
| 64 | screw(); | |
| 65 | } | |
| 66 | } | |
| 67 | } | |
| 68 | } | |
| 69 | ||
| 70 | module yrodbracket2(lip_thickness, lip_length) { | |
| 71 | innerRadius = threaded_rod_diameter / 2; | |
| 72 | outerRadius = innerRadius + lip_thickness; | |
| 73 | r_head = 3.5; // FIXME: stolen from screw() in inc/functions.scad | |
| 74 | r_screw = 2; | |
| 75 | screw_margin = r_head + 2; | |
| 76 | holeOuterDiameter = r_screw + screw_margin * 2; | |
| 77 | holeCenter = holeOuterDiameter / 2; | |
| 78 | width = threaded_rod_diameter + holeOuterDiameter * 2; | |
| 79 | middle = width / 2; | |
| 80 | height = outerRadius + innerRadius; | |
| 81 | ||
| 82 | depth = holeOuterDiameter * 2 + lip_thickness; | |
| 83 | ||
| 84 | function pythag(a, b) = sqrt(a * a + b * b); | |
| 85 | function bevelradius(x, y, bevel) = pythag(x, y) - bevel * max(x, y) / min(x, y); | |
| 86 | ||
| 87 | xzbevel = bevelradius(width, board_thickness + lip_length, 2.0); | |
| 88 | yzbevel = bevelradius(depth, board_thickness + lip_length, 2.0); | |
| 89 | bracket_thickness = board_thickness + lip_length; | |
| 90 | difference() { | |
| 91 | union() { | |
| 92 | intersection() { | |
| 93 | translate([0, 0, -lip_length]) | |
| 94 | cube([width, depth, bracket_thickness]); | |
| 95 | translate([width / 2, depth / 2, bracket_thickness / 2 - lip_length]) | |
| 96 | rotate([0, 45, 0]) | |
| 97 | cube([xzbevel, depth, xzbevel], center=true); | |
| 98 | translate([width / 2, depth / 2, bracket_thickness / 2 - lip_length]) | |
| 99 | rotate([45, 0, 0]) | |
| 100 | cube([width, yzbevel, yzbevel], center=true); | |
| 101 | } | |
| 102 | } | |
| 103 | translate([holeOuterDiameter, -1, -lip_length - lip_thickness]) | |
| 104 | boltTrack(threaded_rod_diameter, depth + 2, lip_length + lip_thickness + innerRadius); | |
| 105 | ||
| 106 | translate([-1, lip_thickness, -lip_length - 1]) | |
| 107 | cube([width + 2, depth, lip_length + 1]); | |
| 108 | ||
| 109 | // screw holes | |
| 110 | for (x = [holeCenter, width - holeCenter]) { | |
| 111 | for (y = [lip_thickness + holeCenter, holeOuterDiameter + lip_thickness + holeCenter]) { | |
| 112 | translate([x, y, board_thickness]) | |
| 113 | rotate([180, 0, 0]) | |
| 114 | screw(); | |
| 115 | } | |
| 116 | } | |
| 117 | } | |
| 118 | } | |
| 119 | ||
| 120 | translate([-10, 0, 0]) | |
| 121 | color("blue") | |
| 122 | cube([1, 1, board_thickness]); // xxx: ruler | |
| 123 | translate([-9, 0, 0]) | |
| 124 | color("Red") | |
| 125 | cube([1, 1, threaded_rod_diameter]); // xxx: ruler | |
| 126 | ||
| 127 | yrodbracket2(3, 3); | |
| 128 | //rotate([90, 0, 0]) | |
| 129 | //translate([3.5 + 6 + 3 + threaded_rod_diameter / 2, threaded_rod_diameter / 2, -50]) | |
| 130 | //# cylinder(r=threaded_rod_diameter / 2, h=100); |