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2159eed1 | 1 | // PRUSA iteration3 |
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2 | // Functions used in many files |
3 | // GNU GPL v3 | |
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4 | // Josef Průša <josefprusa@me.com> |
5 | // Václav 'ax' Hůla <axtheb@gmail.com> | |
4d2a954d | 6 | // Vlnofka <> |
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7 | // http://www.reprap.org/wiki/Prusa_Mendel |
8 | // http://github.com/prusajr/PrusaMendel | |
9 | ||
10 | ||
11 | module nut(d,h,horizontal=true){ | |
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12 | cornerdiameter = (d / 2) / cos (180 / 6); |
13 | cylinder(h = h, r = cornerdiameter, $fn = 6); | |
14 | if(horizontal){ | |
15 | for(i = [1:6]){ | |
51fd106d | 16 | rotate([0,0,60*i]) translate([-cornerdiameter-0.2,0,0]) rotate([0,0,-45]) cube([2,2,h]); |
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17 | } |
18 | } | |
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19 | } |
20 | ||
21 | // Based on nophead research | |
c94c2662 | 22 | module polyhole(d, h, center=false) { |
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23 | n = max(round(2 * d),3); |
24 | rotate([0,0,180]) | |
25 | cylinder(h = h, r = (d / 2) / cos (180 / n), $fn = n); | |
26 | } | |
27 | ||
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28 | // make it interchangeable between this and cylinder |
29 | module cylinder_poly(r, h, center=false){ | |
30 | polyhole(d=r*2, h=h, center=center); | |
31 | } | |
32 | ||
1280d035 | 33 | module fillet(radius, height=100, $fn=0) { |
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34 | //this creates acutal fillet |
35 | translate([-radius, -radius, -height/2-0.01]) | |
36 | difference() { | |
37 | cube([radius*2, radius*2, height+0.02]); | |
1280d035 | 38 | cylinder(r=radius, h=height+0.02, $fn=$fn); |
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39 | } |
40 | } | |
41 | ||
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42 | module cube_fillet(size, radius=-1, vertical=[3,3,3,3], top=[0,0,0,0], bottom=[0,0,0,0], center=false, $fn=0){ |
43 | // | |
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44 | if (use_fillets) { |
45 | if (center) { | |
c94c2662 | 46 | cube_fillet_inside(size, radius, vertical, top, bottom, $fn); |
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47 | } else { |
48 | translate([size[0]/2, size[1]/2, size[2]/2]) | |
49 | cube_fillet_inside(size, radius, vertical, top, bottom, $fn); | |
50 | } | |
51 | } else { | |
52 | cube(size, center); | |
c94c2662 | 53 | } |
c6265fc0 | 54 | |
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55 | } |
56 | ||
57 | module cube_negative_fillet(size, radius=-1, vertical=[3,3,3,3], top=[0,0,0,0], bottom=[0,0,0,0], $fn=0){ | |
58 | ||
59 | j=[1,0,1,0]; | |
d3618a65 | 60 | |
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61 | for (i=[0:3]) { |
62 | if (radius > -1) { | |
63 | rotate([0, 0, 90*i]) translate([size[1-j[i]]/2, size[j[i]]/2, 0]) fillet(radius, size[2], $fn=$fn); | |
64 | } else { | |
65 | rotate([0, 0, 90*i]) translate([size[1-j[i]]/2, size[j[i]]/2, 0]) fillet(vertical[i], size[2], $fn=$fn); | |
66 | } | |
67 | rotate([90*i, -90, 0]) translate([size[2]/2, size[j[i]]/2, 0 ]) fillet(top[i], size[1-j[i]], $fn=$fn); | |
68 | rotate([90*(4-i), 90, 0]) translate([size[2]/2, size[j[i]]/2, 0]) fillet(bottom[i], size[1-j[i]], $fn=$fn); | |
69 | ||
70 | } | |
71 | } | |
d3618a65 | 72 | |
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73 | module cube_fillet_inside(size, radius=-1, vertical=[3,3,3,3], top=[0,0,0,0], bottom=[0,0,0,0], $fn=0){ |
74 | //makes CENTERED cube with round corners | |
75 | // if you give it radius, it will fillet vertical corners. | |
76 | //othervise use vertical, top, bottom arrays | |
77 | //when viewed from top, it starts in upper right corner (+x,+y quadrant) , goes counterclockwise | |
1280d035 | 78 | //top/bottom fillet starts in direction of Y axis and goes CCW too |
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79 | |
80 | ||
81 | if (radius == 0) { | |
82 | cube(size, center=true); | |
83 | } else { | |
84 | difference() { | |
85 | cube(size, center=true); | |
86 | cube_negative_fillet(size, radius, vertical, top, bottom, $fn); | |
87 | } | |
88 | } | |
89 | } | |
90 | ||
91 | ||
0b2e9c87 | 92 | module nema17(places=[1,1,1,1], size=15.5, h=10, holes=false, shadow=false, $fn=24){ |
c94c2662 | 93 | for (i=[0:3]) { |
4bdd854d | 94 | if (places[i] == 1) { |
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95 | rotate([0, 0, 90*i]) translate([size, size, 0]) { |
96 | if (holes) { | |
380e3cfb | 97 | rotate([0, 0, -90*i]) translate([0,0,-10]) screw(r=1.7, slant=false, head_drop=13, $fn=$fn, h=h+12); |
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98 | } else { |
99 | rotate([0, 0, -90*i]) cylinder(h=h, r=5.5, $fn=$fn); | |
100 | } | |
101 | } | |
102 | } | |
103 | } | |
86222e6a | 104 | if (shadow != false) { |
51fd106d | 105 | %translate ([0, 0, shadow+21+3]) cube([42,42,42], center = true); |
1280d035 | 106 | //flange |
28c8b084 | 107 | %translate ([0, 0, shadow+21+3-21-1]) cylinder(r=11,h=2, center = true, $fn=20); |
1280d035 | 108 | //shaft |
28c8b084 | 109 | %translate ([0, 0, shadow+21+3-21-7]) cylinder(r=2.5,h=14, center = true); |
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110 | } |
111 | } | |
112 | ||
fdc7f8d6 | 113 | module screw(h=20, r=2, r_head=3.5, head_drop=0, slant=i_am_box, poly=false, $fn=0){ |
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114 | //makes screw with head |
115 | //for substraction as screw hole | |
116 | if (poly) { | |
117 | cylinder_poly(h=h, r=r, $fn=$fn); | |
118 | } else { | |
119 | cylinder(h=h, r=r, $fn=$fn); | |
120 | } | |
121 | if (slant) { | |
122 | translate([0, 0, head_drop-0.01]) cylinder(h=r_head, r2=0, r1=r_head, $fn=$fn); | |
123 | } | |
124 | ||
125 | if (head_drop > 0) { | |
126 | translate([0, 0, -0.01]) cylinder(h=head_drop+0.01, r=r_head, $fn=$fn); | |
127 | } | |
128 | } | |
d3618a65 | 129 | |
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130 | //cube_fillet([10,20,30], vertical=[3,2,0,0], top=[3,2,0,5], bottom=[3,2,0,5]); |
131 | //cube_fillet([10,20,30], radius=2, top=[7,2,7,2]); |