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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 | |
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7 | include <caster-standoff-dimensions.scad> |
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8 | use <oshw.scad> |
9 | |
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10 | // use 10 ish for development, 60 or so for printing |
11 | $fn = 60; |
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12 | |
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13 | module deck_flange(){ |
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14 | deck_pitch_diagonal = sqrt(2 * pow(deck_pitch, 2)); |
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15 | difference(){ |
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16 | scale([0.35, 0.35, 1]){ |
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17 | linear_extrude(height = deck_flange_height){ |
18 | oshw();}} |
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19 | for(ii = [-1, 1]){ |
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20 | translate([deck_pitch_diagonal / 2 * ii, 0, -.1]) |
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21 | cylinder(h = deck_flange_height * 1.1, |
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22 | r = deck_flange_screw_radius);} |
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23 | translate([0, deck_pitch_diagonal / 2, -.1]) |
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24 | cylinder(h = deck_flange_height * 1.1, |
25 | r = deck_flange_screw_radius);}} |
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26 | |
27 | module deck_flange_reinforcement(){ |
28 | translate([-deck_flange_radius, |
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29 | -.5 * deck_flange_height / 2, |
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30 | deck_flange_height]){ |
31 | difference (){ |
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32 | cube([deck_flange_radius, deck_flange_height / 2, deck_flange_radius]); |
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33 | translate([-.1, -.05 * deck_flange_height, 0]){ |
34 | rotate([0, -45, 0]){ |
35 | cube([deck_flange_radius * 1.5, // 1.5 is bigger than sqrt(2) |
36 | deck_flange_height * 1.1, // 1.1 is bigger than 1 |
37 | deck_flange_radius]);}}}}} |
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38 | |
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39 | module ball_holder(){ |
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40 | difference (){ |
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41 | union(){ |
42 | cylinder(r = holder_radius, h = holder_height); |
43 | translate([0, 0, holder_arms_length]){ |
44 | cylinder(r1 = holder_radius, |
45 | r2 = holder_radius + wall_thickness, |
46 | h = wall_thickness); |
47 | translate([0, 0, wall_thickness]){ |
48 | cylinder(r = wall_thickness + holder_radius, |
49 | h = holder_height |
50 | - holder_arms_length |
51 | - wall_thickness); }}} |
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52 | translate([0, 0, ball_radius + holder_floor + holder_arms_length]){ |
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53 | sphere(r = ball_radius);} |
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54 | translate([0, 0, holder_floor + (holder_height - holder_floor) / 2 + 0.5]){ |
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55 | cube([holder_diameter + wall_thickness * 2 + 0.1, |
56 | gap, |
57 | holder_height - holder_floor + 0.1], |
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58 | center = true);}}} |
59 | |
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60 | module caster_standoff(){ |
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61 | cylinder(h = standoff_lower_portion_height, |
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62 | r = standoff_radius); |
63 | deck_flange(); |
64 | for(ii = [0:3]){ |
65 | rotate([0, 0, 45 + 90 * ii]) |
66 | deck_flange_reinforcement();} |
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67 | translate([0, 0, standoff_lower_portion_height]){ |
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68 | ball_holder();}} |
69 | |
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70 | caster_standoff(); |