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1 | // challenge-bot |
2 | // GNU AGPLv3 (or later at your option) |
3 | // project available at these locations: |
4 | // https://gitorious.org/ozzloy/challenge-bot |
5 | // https://github.com/waynegramlich/challenge-bot |
6 | |
a96c0938 |
7 | // use this drill jig for putting holes in a motor mount for screws |
8 | // and motor shaft. the four tabs at the bottom are for clamping |
9 | // the jig down. |
10 | |
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11 | mm_per_inch = 25.4; |
12 | |
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13 | material_width = (1 / 8) * mm_per_inch; |
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14 | |
15 | board_length = 1.75 * mm_per_inch; |
16 | board_width = 1.5 * mm_per_inch; |
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17 | board_depth = (3 / 16) * mm_per_inch; |
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18 | tab_length = 3 * mm_per_inch; |
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19 | tab_width = (1 / 4) * mm_per_inch; |
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20 | |
21 | union(){ |
22 | rotate(a = 90, v = [1, 0, 0]) { |
23 | cube([board_length + material_width, |
24 | 1.75 * mm_per_inch + material_width, |
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25 | material_width]);} |
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26 | |
27 | translate(v = [0, -material_width, 0]){ |
28 | rotate(a = -90, v = [0, 1, 0]) { |
29 | cube( [1.75 * mm_per_inch + material_width, |
30 | 1.5 * mm_per_inch + 2 * material_width, |
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31 | material_width]);}} |
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32 | |
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33 | translate(v = [(1.75 * mm_per_inch + material_width) / 2 + tab_width, |
34 | -tab_length, |
35 | 0]){ |
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36 | rotate(a = 90, v = [0 ,0 ,1 ]){ |
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37 | cube([3 * mm_per_inch, 0.5 * mm_per_inch , material_width]);}} |
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38 | |
39 | translate(v = [-tab_length, |
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40 | (1.5 * mm_per_inch + material_width) / 2 - tab_width, |
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41 | 0]){ |
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42 | cube([3 * mm_per_inch, 0.5 * mm_per_inch , material_width]);} |
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43 | |
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44 | translate(v = [(1.75 * mm_per_inch + material_width) / 2 + tab_width, |
45 | (1.5 * mm_per_inch), |
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46 | 0]){ |
47 | rotate(a = 90, v = [0, 0, 1]){ |
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48 | cube([3 * mm_per_inch, 0.5 * mm_per_inch , material_width]);}} |
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49 | |
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50 | translate(v = [(1.75 * mm_per_inch), |
51 | (1.5 * mm_per_inch + material_width) / 2 - tab_width, |
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52 | 0]){ |
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53 | cube([3 * mm_per_inch, 0.5 * mm_per_inch , material_width]);}} |
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54 | |
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55 | _4_40 = 0.1285 * mm_per_inch / 2; // size of hole for 4x40 |
56 | _6_32 = 0.1495 * mm_per_inch / 2; // size of hole for 6x32 |
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57 | |
58 | module collar_hole(){ |
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59 | cylinder(h = board_depth, r = 2 * _6_32, $fn = 20);} |
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60 | |
61 | module nubbin_hole(){ |
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62 | cylinder(h = board_depth, r = _6_32, $fn = 20);} |
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63 | |
64 | module mounting_screw_hole(){ |
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65 | cylinder(h = board_depth, r = _6_32, $fn = 20);} |
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66 | |
67 | module bracket_screw_hole(){ |
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68 | cylinder(h = board_depth, r = _6_32, $fn = 20);} |
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69 | |
70 | module wheel_motor_holes(scale){ |
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71 | translate([51 - 26.78, 38 - 10.8, 0] * scale) { |
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72 | collar_hole();} |
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73 | translate([51 - 26.78, 38 - 22.23, 0] * scale){ |
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74 | nubbin_hole();} |
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75 | translate([51 - 18.05 - 17.45, 38 - 30.81, 0] * scale){ |
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76 | mounting_screw_hole();} |
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77 | translate([51 - 18.05, 38 - 30.81, 0] * scale){ |
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78 | mounting_screw_hole();} |
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79 | translate([7.5, 8.5, 0] * scale){ |
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80 | bracket_screw_hole();} |
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81 | translate([7.5, 21 + 8.5, 0] * scale){ |
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82 | bracket_screw_hole();}} |
83 | |
84 | module wheel_mount(scale){ |
85 | difference(){ |
86 | cube(scale * [board_length + material_width, |
87 | board_width + material_width, |
88 | material_width]); |
89 | wheel_motor_holes(scale);}} |
90 | |
91 | wheel_mount(1); |
92 | |
93 | translate(v = [0, 0, board_length]) jig_lid(); |
94 | |
95 | module jig_lid() { |
96 | union() { |
97 | wheel_mount(1); |
98 | translate(v = [0, -2.1 * material_width, material_width]){ |
99 | cube([board_length + material_width, |
100 | 3.1 * material_width, |
101 | material_width]);} |
102 | translate(v = [0, -2.1 * material_width, 0]){ |
103 | cube([board_length + material_width, material_width, material_width]);} |
104 | translate(v = [-2.1 * material_width, 0, material_width]){ |
105 | cube([3.1 * material_width, |
106 | board_width + material_width, |
107 | material_width]);} |
108 | translate(v = [-2.1 * material_width, 0, 0]){ |
109 | cube([material_width, board_width+material_width, material_width]);}}} |