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f9a12374 CE |
1 | /* |
2 | min y = 0 | |
3 | max y = 100 | |
4 | min x = 1205 | |
5 | max x = 1254 | |
6 | ||
7 | Makerfair X carriage plate adapter for the Wilson RepRap. | |
8 | Copyright (c) 2015 Clinton Ebadi <clinton@unknownlamer.org> | |
9 | ||
10 | This program is free software: you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation, either version 3 of the License, or | |
13 | (at your option) any later version. | |
14 | ||
15 | This program is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
21 | along with this program. If not, see <http://www.gnu.org/licenses/>. | |
22 | ||
23 | Measurements reverse engineered from | |
24 | https://github.com/RickSisco/MakerFarm-Prusa-i3v-12-Inch | |
25 | ||
26 | Intended for use with the itty bitty dual extruder series. | |
27 | ||
28 | Source needs a good cleanup. Evil loops that don't take advantage of | |
29 | the geometry of the object abound. | |
30 | ||
62f36d7f CE |
31 | major todo: |
32 | ||
33 | - square hole placement is a total mess | |
34 | ||
f9a12374 CE |
35 | */ |
36 | ||
37 | use <MCAD/nuts_and_bolts.scad> | |
38 | ||
62f36d7f CE |
39 | $fn = 64; |
40 | ||
41 | carriage_height = 64; | |
42 | carriage_width = 52; | |
f9a12374 CE |
43 | |
44 | plate_width = 75; // wilson carriage is only 50mm wide! | |
84a5e569 CE |
45 | plate_depth = 6; // wilson default depth = 8, makerfarm = 6 |
46 | ||
47 | hole_tolerance = 0.25; // widen holes a bit, may still need to drill out | |
f9a12374 CE |
48 | |
49 | plate_cut_height = 6.5; | |
50 | plate_cut_width = 6; | |
51 | plate_cut_distance = 13; | |
52 | plate_cut_center = 25.1; | |
53 | plate_cut_y_offset = 27; | |
84a5e569 | 54 | plate_cut_bolt = 3 + hole_tolerance; |
f9a12374 CE |
55 | plate_cut_x_bolt_offset = 10.5 + plate_cut_bolt / 2; |
56 | ||
62f36d7f | 57 | plate_extra_height = 4; // make plate a bit taller so it is structurally sound |
84a5e569 CE |
58 | |
59 | plate_height = plate_cut_height + plate_cut_y_offset + plate_extra_height; | |
f9a12374 CE |
60 | |
61 | lower_cut_y_offset = 5.33; // 5.325 in CAD | |
62 | lower_bolt_x_offset = 1.5 + plate_cut_bolt / 2; | |
63 | lower_bolt_y_offset = 3.275 + plate_cut_bolt / 2; | |
64 | ||
84a5e569 | 65 | carriage_bolt = 4 + hole_tolerance; |
62f36d7f | 66 | carriage_hole_spacing = 23; |
f9a12374 CE |
67 | carriage_clearance = 20; // holes are 20mm from bottom of plate |
68 | carriage_y_offset = plate_cut_y_offset + plate_cut_height + carriage_clearance; | |
84a5e569 | 69 | carriage_nut_depth = 3.2 + 3.2/2 + 0.1; // m4 nut depth + half of an m4 nut + tolerance |
f9a12374 CE |
70 | |
71 | corner_radius = 3; // round off the corners to make it look nicer | |
72 | ||
84a5e569 | 73 | shelf_mount (); |
62f36d7f | 74 | translate ([(plate_width - carriage_width) / 2, plate_height - plate_extra_height/2, 0]) carriage_mount (); |
84a5e569 CE |
75 | |
76 | // mount to wilson x-carriage | |
77 | module carriage_mount () { | |
78 | difference () { | |
79 | linear_extrude (height = plate_depth, convexity = 8) { | |
80 | // outline of plate + bolt holes | |
81 | difference () { | |
82 | translate ([corner_radius, corner_radius, 0]) { | |
83 | minkowski () { | |
84 | square ([carriage_width - corner_radius*2, carriage_height - corner_radius]); | |
85 | circle (r = corner_radius); | |
86 | } | |
87 | } | |
f9a12374 | 88 | |
84a5e569 CE |
89 | #translate ([(carriage_width - carriage_hole_spacing) / 2, (carriage_height - carriage_hole_spacing) /2, 0]) |
90 | for (x = [0, carriage_hole_spacing], y = [0, carriage_hole_spacing]) { | |
62f36d7f | 91 | translate ([x, y, 0]) circle (d = carriage_bolt); |
84a5e569 | 92 | } |
f9a12374 | 93 | } |
f9a12374 | 94 | } |
84a5e569 CE |
95 | // after extruding, cut out spaces for M4 hex nuts. |
96 | translate ([(carriage_width - carriage_hole_spacing) / 2, (carriage_height - carriage_hole_spacing) /2, plate_depth - carriage_nut_depth]) { | |
f9a12374 | 97 | for (x = [0, carriage_hole_spacing], y = [0, carriage_hole_spacing]) { |
84a5e569 | 98 | translate ([x, y, 0]) linear_extrude (height = carriage_nut_depth + 0.01) nutHole (size = carriage_bolt, proj = 1); |
f9a12374 | 99 | } |
f9a12374 CE |
100 | } |
101 | } | |
102 | } | |
103 | ||
84a5e569 CE |
104 | // mount for makerfarm extruder shelf |
105 | module shelf_mount () { | |
106 | linear_extrude (height = plate_depth, convexity = 8) { | |
107 | difference () { | |
108 | translate ([corner_radius, corner_radius, 0]) { | |
109 | minkowski () { | |
110 | square ([plate_width - corner_radius*2, plate_height - corner_radius*2]); | |
111 | circle (r = corner_radius); | |
112 | } | |
113 | } | |
f9a12374 | 114 | |
84a5e569 CE |
115 | // upper shelf mount |
116 | translate ([0, plate_cut_y_offset, 0]) { | |
117 | for (x = [-0.01, plate_cut_width + plate_cut_distance, plate_cut_width*2 + plate_cut_distance + plate_cut_center, plate_cut_width*3 + plate_cut_distance*2 + plate_cut_center + 0.01]) | |
62f36d7f | 118 | #translate ([x - hole_tolerance/2, 0, 0]) square ([plate_cut_width + hole_tolerance, plate_cut_height]); |
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119 | |
120 | // looks like the bolt is at the midpoint between the cut outs | |
121 | for (x = [plate_cut_x_bolt_offset, plate_width - plate_cut_x_bolt_offset]) | |
62f36d7f | 122 | translate ([x, plate_cut_height / 2, 0]) circle (d = plate_cut_bolt + hole_tolerance); |
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123 | } |
124 | ||
125 | // lower shelf mount | |
126 | translate ([0, lower_cut_y_offset, 0]) { | |
62f36d7f | 127 | for (x = [plate_cut_width/2 - 0.01, plate_width - plate_cut_width/2 + 0.01]) { |
84a5e569 | 128 | // lower cut out is closer to 6mm than 6.5mm in cad drawings |
62f36d7f | 129 | translate ([x, plate_cut_height/2, 0]) square ([plate_cut_width, plate_cut_height - 0.5], center=true); |
84a5e569 CE |
130 | } |
131 | // I think the intention is for the screw holes to be centered over the cut out | |
132 | for (x = [lower_bolt_x_offset, plate_width - lower_bolt_x_offset]) | |
62f36d7f | 133 | translate ([x, plate_cut_height + lower_bolt_y_offset, 0]) circle (d = plate_cut_bolt + hole_tolerance); |
f9a12374 CE |
134 | } |
135 | } | |
136 | } | |
137 | } |