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2159eed1 VAH |
1 | // PRUSA iteration3 |
2 | // Y drivetrain (idler and stepper holders) | |
7e896b17 | 3 | // GNU GPL v3 |
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4 | // Josef Průša <josefprusa@me.com> |
5 | // Václav 'ax' Hůla <axtheb@gmail.com> | |
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6 | // http://www.reprap.org/wiki/Prusa_Mendel |
7 | // http://github.com/prusajr/PrusaMendel | |
8 | ||
7e896b17 | 9 | include <configuration.scad> |
eff6608e | 10 | use <inc/bearing-guide.scad> |
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11 | |
12 | module motorholder(thickness=10){ | |
13 | difference(){ | |
14 | union(){ | |
15 | // Motor holding part | |
f705c26c | 16 | translate([29, -21 + 50, 0]) |
7e896b17 | 17 | { |
f705c26c | 18 | //#cube([42, 42, 2], center=true); |
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19 | difference(){ |
20 | union(){ | |
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21 | translate([-21 + 4.5, 0, 5]) cube([9, 31, thickness], center=true); |
22 | nema17([0, 1, 1, 0], thickness=thickness, shadow=false); | |
23 | mirror([0, 0, 1]) translate([0, 0, -10]) nema17([0, 1, 1, 0], thickness=thickness, shadow=7); | |
7e896b17 | 24 | // Parts joining part |
f705c26c | 25 | translate([-29, -21, 0]) cube([14, 30, thickness]); |
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26 | } |
27 | // Motor mounting holes | |
f705c26c | 28 | translate([0, 0, thickness]) mirror([0, 0, 1]) nema17([0, 1, 1, 0], thickness=thickness, holes=true); |
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29 | } |
30 | } | |
31 | ||
32 | // Front holding part | |
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33 | translate([0, 10, 0]) cylinder(h = thickness, r=8); |
34 | translate([0, 20, 5]) cube([16, 20, thickness], center=true); | |
35 | translate([0, 30, 0]) cylinder(h = thickness, r=8); | |
7e896b17 | 36 | } |
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37 | translate([0, 10, -1]) cylinder(h = 12, r=4.5, $fn=32); |
38 | translate([0, 30, -1]) cylinder(h = 12, r=4.5, $fn=32); | |
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39 | } |
40 | } | |
41 | ||
67f4a88f | 42 | module oval(r=4, l=14, h=2){ |
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43 | intersection() { |
44 | union() { | |
45 | translate([l / 2, 0, 0]) cylinder(r=r, h=h, $fn=4); | |
67f4a88f | 46 | //translate([-l / 2, 0, 0]) cylinder(r=r, h=h, $fn=4); |
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47 | translate([0, 0, h / 2]) cube([l, r * 2, h], center=true); |
48 | } | |
49 | translate([0, 0, h / 2]) cube([l + r * 1.2, r * 2, h], center=true); | |
50 | } | |
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51 | } |
52 | ||
f705c26c | 53 | module idlermount(len=42, narrow_len=0, narrow_width=0, rod=threaded_rod_diameter_horizontal / 2, idler_height=16){ |
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54 | difference(){ |
55 | union(){ | |
f705c26c | 56 | //wide part holding bearing |
6229a141 | 57 | translate([- (10 + idler_width) / 2, -25 + narrow_len, 0] ) cube_fillet([10 + idler_width, len + idler_bearing[2] * 1.1 - narrow_len, idler_height]); |
0d8b4afe | 58 | //For X there is narrow part inside the x-idler |
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59 | if (narrow_len > 0){ |
60 | translate([-narrow_width / 2, -25, 0] ) cube_fillet([narrow_width, len + idler_bearing[2], idler_height], vertical=[0, 0, 2, 2]); | |
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61 | mirror([1, 0, 0]) translate([-narrow_width / 2, narrow_len -25, idler_height / 2 ]) fillet(1.5, idler_height - 0.04, $fn=8); |
62 | translate([-narrow_width / 2, narrow_len -25, idler_height / 2]) fillet(1.5, idler_height - 0.04, $fn=8); | |
f705c26c | 63 | } |
7e896b17 | 64 | } |
b4cb7357 | 65 | translate([-12, -9, idler_height / 2]) rotate([90, 0, 90]) oval(r=rod + 0.01, l=12, h=25); |
8dd48710 | 66 | translate([0, -15 - single_wall_width*2, idler_height / 2]) { |
67f4a88f | 67 | //nut |
8dd48710 | 68 | translate([0,0.2,0]) rotate([90, 0, 0]) cylinder(r=m4_nut_diameter_horizontal / 2, h=3.5, $fn=6); |
67f4a88f | 69 | //nut insert |
8dd48710 | 70 | translate([0, -3.3, -m4_diameter * 1.5 / 2]) cube([20, 3.5, m4_diameter * 1.5]); |
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71 | } |
72 | ||
8dd48710 | 73 | translate([0, -19, idler_height / 2]) rotate([90, 90, 0]) cylinder(r=m4_diameter / 2, h=15, $fn=small_hole_segments, center=true); |
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74 | translate([0, len + idler_bearing[2] - 33, idler_height / 2]) { |
75 | rotate([0, 90, 0]) idler_assy(idler_bearing); | |
76 | translate([0, 10, 0]) cube([idler_width + 1, 20, idler_height + 2], center=true); | |
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77 | } |
78 | ||
7e896b17 | 79 | } |
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80 | } |
81 | ||
b325d8c2 | 82 | |
42e0b559 | 83 | motorholder(); |
f705c26c | 84 | translate([32, 20, 0]) idlermount(); |
7337be14 | 85 | |
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86 | if (idler_bearing[3] == 1) { |
87 | translate([0, -12 - idler_bearing[0] / 2, 0]) { | |
88 | bearing_guide_inner(); | |
f705c26c | 89 | translate([idler_bearing[0] + 10, 0, 0]) |
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90 | bearing_guide_outer(); |
91 | } | |
92 | } |