| 1 | // Copyright 2010 D1plo1d |
| 2 | |
| 3 | // This library is dual licensed under the GPL 3.0 and the GNU Lesser General Public License as per http://creativecommons.org/licenses/LGPL/2.1/ . |
| 4 | |
| 5 | //testNutsAndBolts(); |
| 6 | |
| 7 | module SKIPtestNutsAndBolts() |
| 8 | { |
| 9 | $fn = 360; |
| 10 | translate([0,15])nutHole(3, proj=2); |
| 11 | boltHole(3, length= 30, proj=2); |
| 12 | } |
| 13 | |
| 14 | MM = "mm"; |
| 15 | INCH = "inch"; //Not yet supported |
| 16 | |
| 17 | //Based on: http://www.roymech.co.uk/Useful_Tables/Screws/Hex_Screws.htm |
| 18 | METRIC_NUT_AC_WIDTHS = |
| 19 | [ |
| 20 | -1, //0 index is not used but reduces computation |
| 21 | -1, |
| 22 | -1, |
| 23 | 6.40,//m3 |
| 24 | 8.10,//m4 |
| 25 | 9.20,//m5 |
| 26 | 11.50,//m6 |
| 27 | -1, |
| 28 | 15.00,//m8 |
| 29 | -1, |
| 30 | 19.60,//m10 |
| 31 | -1, |
| 32 | 22.10,//m12 |
| 33 | -1, |
| 34 | -1, |
| 35 | -1, |
| 36 | 27.70,//m16 |
| 37 | -1, |
| 38 | -1, |
| 39 | -1, |
| 40 | 34.60,//m20 |
| 41 | -1, |
| 42 | -1, |
| 43 | -1, |
| 44 | 41.60,//m24 |
| 45 | -1, |
| 46 | -1, |
| 47 | -1, |
| 48 | -1, |
| 49 | -1, |
| 50 | 53.1,//m30 |
| 51 | -1, |
| 52 | -1, |
| 53 | -1, |
| 54 | -1, |
| 55 | -1, |
| 56 | 63.5//m36 |
| 57 | ]; |
| 58 | METRIC_NUT_THICKNESS = |
| 59 | [ |
| 60 | -1, //0 index is not used but reduces computation |
| 61 | -1, |
| 62 | -1, |
| 63 | 2.40,//m3 |
| 64 | 3.20,//m4 |
| 65 | 4.00,//m5 |
| 66 | 5.00,//m6 |
| 67 | -1, |
| 68 | 6.50,//m8 |
| 69 | -1, |
| 70 | 8.00,//m10 |
| 71 | -1, |
| 72 | 10.00,//m12 |
| 73 | -1, |
| 74 | -1, |
| 75 | -1, |
| 76 | 13.00,//m16 |
| 77 | -1, |
| 78 | -1, |
| 79 | -1, |
| 80 | 16.00//m20 |
| 81 | -1, |
| 82 | -1, |
| 83 | -1, |
| 84 | 19.00,//m24 |
| 85 | -1, |
| 86 | -1, |
| 87 | -1, |
| 88 | -1, |
| 89 | -1, |
| 90 | 24.00,//m30 |
| 91 | -1, |
| 92 | -1, |
| 93 | -1, |
| 94 | -1, |
| 95 | -1, |
| 96 | 29.00//m36 |
| 97 | ]; |
| 98 | |
| 99 | COURSE_METRIC_BOLT_MAJOR_THREAD_DIAMETERS = |
| 100 | [//based on max values |
| 101 | -1, //0 index is not used but reduces computation |
| 102 | -1, |
| 103 | -1, |
| 104 | 2.98,//m3 |
| 105 | 3.978,//m4 |
| 106 | 4.976,//m5 |
| 107 | 5.974,//m6 |
| 108 | -1, |
| 109 | 7.972,//m8 |
| 110 | -1, |
| 111 | 9.968,//m10 |
| 112 | -1, |
| 113 | 11.966,//m12 |
| 114 | -1, |
| 115 | -1, |
| 116 | -1, |
| 117 | 15.962,//m16 |
| 118 | -1, |
| 119 | -1, |
| 120 | -1, |
| 121 | 19.958,//m20 |
| 122 | -1, |
| 123 | -1, |
| 124 | -1, |
| 125 | 23.952,//m24 |
| 126 | -1, |
| 127 | -1, |
| 128 | -1, |
| 129 | -1, |
| 130 | -1, |
| 131 | 29.947,//m30 |
| 132 | -1, |
| 133 | -1, |
| 134 | -1, |
| 135 | -1, |
| 136 | -1, |
| 137 | 35.940//m36 |
| 138 | ]; |
| 139 | |
| 140 | module nutHole(size, units=MM, tolerance = +0.0001, proj = -1) |
| 141 | { |
| 142 | //takes a metric screw/nut size and looksup nut dimensions |
| 143 | radius = METRIC_NUT_AC_WIDTHS[size]/2+tolerance; |
| 144 | height = METRIC_NUT_THICKNESS[size]+tolerance; |
| 145 | if (proj == -1) |
| 146 | { |
| 147 | cylinder(r= radius, h=height, $fn = 6, center=[0,0]); |
| 148 | } |
| 149 | if (proj == 1) |
| 150 | { |
| 151 | circle(r= radius, $fn = 6); |
| 152 | } |
| 153 | if (proj == 2) |
| 154 | { |
| 155 | translate([-radius/2, 0]) |
| 156 | square([radius*2, height]); |
| 157 | } |
| 158 | } |
| 159 | |
| 160 | module boltHole(size, units=MM, length, tolerance = +0.0001, proj = -1) |
| 161 | { |
| 162 | radius = COURSE_METRIC_BOLT_MAJOR_THREAD_DIAMETERS[size]/2+tolerance; |
| 163 | //TODO: proper screw cap values |
| 164 | capHeight = METRIC_NUT_THICKNESS[size]+tolerance; //METRIC_BOLT_CAP_HEIGHTS[size]+tolerance; |
| 165 | capRadius = METRIC_NUT_AC_WIDTHS[size]/2+tolerance; //METRIC_BOLT_CAP_RADIUS[size]+tolerance; |
| 166 | |
| 167 | if (proj == -1) |
| 168 | { |
| 169 | translate([0, 0, -capHeight]) |
| 170 | cylinder(r= capRadius, h=capHeight); |
| 171 | cylinder(r = radius, h = length); |
| 172 | } |
| 173 | if (proj == 1) |
| 174 | { |
| 175 | circle(r = radius); |
| 176 | } |
| 177 | if (proj == 2) |
| 178 | { |
| 179 | translate([-capRadius/2, -capHeight]) |
| 180 | square([capRadius*2, capHeight]); |
| 181 | square([radius*2, length]); |
| 182 | } |
| 183 | } |