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