Commit | Line | Data |
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2159eed1 VAH |
1 | // PRUSA iteration3 |
2 | // X ends | |
3 | // GNU GPL v3 | |
dba99e69 | 4 | // Josef Průša <josefprusa@me.com> |
3b7acad1 | 5 | // Václav 'ax' Hůla <axtheb@gmail.com> |
2159eed1 VAH |
6 | // http://www.reprap.org/wiki/Prusa_Mendel |
7 | // http://github.com/prusajr/PrusaMendel | |
8 | ||
2fc35ca2 | 9 | include <configuration.scad> |
d3618a65 | 10 | use <bushing.scad> |
eff6608e | 11 | use <inc/bearing-guide.scad> |
f705c26c | 12 | use <y-drivetrain.scad> |
86c402d8 | 13 | |
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14 | //height and width of the x blocks depend on x smooth rod radius |
15 | x_box_height = 52 + 2 * bushing_xy[0]; | |
16 | x_box_width = (bushing_xy[0] <= 4) ? 17.5 : bushing_xy[0] * 2 + 9.5; | |
82bba690 | 17 | echo(x_box_width); |
58279f58 | 18 | bearing_height = max ((bushing_z[2] > 30 ? x_box_height : (2 * bushing_z[2] + 8)), x_box_height); |
d3618a65 NZ |
19 | |
20 | module x_end_motor(){ | |
21 | ||
690004c7 | 22 | mirror([0, 1, 0]) { |
c7eb29ba | 23 | |
82bba690 | 24 | x_end_base([3, 3, min((bushing_xy[0] - 3) * 2, 3), 2], len=42, offset=-5, thru=false); |
c7eb29ba | 25 | |
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26 | |
27 | translate([0, -z_delta - 2, 0]) difference(){ | |
79b4b60a | 28 | union(){ |
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29 | intersection() { |
30 | translate([-15, -34, 30]) cube([20, 60, x_box_height], center = true); | |
31 | union() { | |
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32 | translate([-14, -16 + z_delta / 2, 24]) cube_fillet([17.5, 10.5 + z_delta, 55], center = true, vertical=[0, 0, 3, 3], top=[0, 3, 6, 3], $fn=16); |
33 | //lower arm holding outer stepper screw | |
34 | translate([-10.25, -34, 9]) intersection(){ | |
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35 | translate([0, 0, -5]) cube_fillet([10, 37, 28], center = true, vertical=[0, 0, 0, 0], top=[0, 3, 5, 3]); |
36 | translate([-10/2, 10, -26]) rotate([45, 0, 0]) cube_fillet([10, 60, 60], radius=2); | |
37 | } | |
38 | } | |
79b4b60a | 39 | } |
82bba690 | 40 | translate([-16, -32, 30.25]) rotate([90, 0, 0]) rotate([0, 90, 0]) nema17(places=[1, 0, 1, 1], h=11); |
82e9f136 | 41 | } |
c7eb29ba | 42 | |
79b4b60a | 43 | // motor screw holes |
690004c7 | 44 | translate([21-5, -21-11, 30.25]){ |
79b4b60a | 45 | // belt hole |
82bba690 | 46 | translate([-30, 11, -0.25]) cube_fillet([11, 36, 22], vertical=0, top=[0, 1, 0, 1], bottom=[0, 1, 0, 1], center = true, $fn=4); |
79b4b60a | 47 | //motor mounting holes |
82bba690 | 48 | translate([-29.5, 0, 0]) rotate([0, 0, 0]) rotate([0, 90, 0]) nema17(places=[1, 1, 0, 1], holes=true, shadow=5.5, $fn=small_hole_segments, h=8); |
79b4b60a | 49 | } |
c7eb29ba | 50 | } |
79b4b60a | 51 | //smooth rod caps |
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52 | //translate([-22, -10, 0]) cube([17, 2, 15]); |
53 | //translate([-22, -10, 45]) cube([17, 2, 10]); | |
c7eb29ba | 54 | } |
d3618a65 NZ |
55 | } |
56 | ||
f705c26c | 57 | module x_end_base(vfillet=[3, 3, 3, 3], thru=true, len=40, offset=0){ |
d3618a65 | 58 | |
c7eb29ba VAH |
59 | difference(){ |
60 | union(){ | |
f705c26c | 61 | translate([-10 - bushing_xy[0], -10 + len / 2 + offset, 30]) cube_fillet([x_box_width, len, x_box_height], center=true, vertical=vfillet, top=[5, 3, 5, 3]); |
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62 | |
63 | translate([0, 0, 4 - bushing_xy[0]]) { | |
64 | //rotate([0, 0, 0]) translate([0, -9.5, 0]) | |
11476b31 | 65 | translate([z_delta, 0, 0]) render(convexity = 5) linear(bushing_z, bearing_height); |
690004c7 | 66 | // Nut trap |
cc573956 | 67 | translate([-2, 18, 5]) cube_fillet([20, 14, 10], center = true, vertical=[8, 0, 0, 5]); |
690004c7 | 68 | //} |
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69 | } |
70 | } | |
690004c7 | 71 | // here are bushings/bearings |
11476b31 | 72 | translate([z_delta, 0, 4 - bushing_xy[0]]) linear_negative(bushing_z, bearing_height); |
d3618a65 | 73 | |
c7eb29ba | 74 | // belt hole |
82bba690 | 75 | translate([-5.5 - 10 + 1.5, 22 - 9 + offset, 30]) cube_fillet([max(idler_width + 2, 11), 55, 27], center = true, vertical=0, top=[0, 1, 0, 1], bottom=[0, 1, 0, 1], $fn=4); |
690004c7 | 76 | |
82bba690 | 77 | //smooth rods |
f705c26c | 78 | translate([-10 - bushing_xy[0], offset, 0]) { |
690004c7 VAH |
79 | if(thru == true){ |
80 | translate([0, -11, 6]) rotate([-90, 0, 0]) pushfit_rod(bushing_xy[0] * 2 + 0.2, 50); | |
81 | translate([0, -11, xaxis_rod_distance+6]) rotate([-90, 0, 0]) pushfit_rod(bushing_xy[0] * 2 + 0.2, 50); | |
82 | } else { | |
83 | translate([0, -7, 6]) rotate([-90, 0, 0]) pushfit_rod(bushing_xy[0] * 2 + 0.2, 50); | |
84 | translate([0, -7, xaxis_rod_distance+6]) rotate([-90, 0, 0]) pushfit_rod(bushing_xy[0] * 2 + 0.2, 50); | |
85 | } | |
86 | } | |
7b4231d9 | 87 | translate([0, 0, 5 - bushing_xy[0]]) { // m5 nut insert |
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88 | translate([0, 17, 0]) rotate([0, 0, 10]){ |
89 | //rod | |
82bba690 | 90 | translate([0, 0, -1]) cylinder(h=(4.1 / 2 + 5), r=3, $fn=32); |
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91 | //nut |
92 | translate([0, 0, 9]) cylinder(r=4.6, h=14.1, center = true, $fn=6); | |
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93 | |
94 | } | |
c7eb29ba | 95 | } |
c7eb29ba | 96 | } |
c7eb29ba | 97 | //threaded rod |
690004c7 | 98 | translate([0, 17, 0]) %cylinder(h = 70, r=2.5+0.2); |
d3618a65 | 99 | } |
79b4b60a | 100 | |
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101 | module x_end_idler(){ |
102 | difference() { | |
82bba690 | 103 | x_end_base(len=48 + z_delta / 3, offset=-10 - z_delta / 3); |
79b4b60a | 104 | // idler hole |
42436753 | 105 | translate([-20, -15 - z_delta / 2, 30]) { |
1f623fc7 | 106 | rotate([0, 90, 0]) cylinder(r=m4_diameter / 2, h=33, center=true, $fn=small_hole_segments); |
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107 | translate([15 - 2 * single_wall_width, 0, 0]) rotate([90, 0, 90]) cylinder(r=m4_nut_diameter_horizontal / 2, h=3, $fn=6); |
108 | ||
79b4b60a | 109 | } |
82bba690 | 110 | translate([-6 - x_box_width, 11, 29.5 - (max(idler_bearing[0], 16) / 2)]) cube([x_box_width + 1, 11, 1.5 + max(idler_bearing[0], 16)]); |
79b4b60a | 111 | } |
b2fd8e88 | 112 | %translate([-14, -9, 30.5 - (max(idler_bearing[0], 16) / 2)]) x_tensioner(); |
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113 | } |
114 | ||
b2fd8e88 | 115 | module x_tensioner(len=62, idler_height=max(idler_bearing[0], 16)) { |
0d8b4afe | 116 | idlermount(len=len, rod=m4_diameter / 2, idler_height=idler_height, narrow_len=46, narrow_width=idler_width + 2 - single_wall_width); |
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117 | } |
118 | ||
119 | ||
ebec6b3c | 120 | translate([-40, 0, 4 - bushing_xy[0]]) x_tensioner(); |
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121 | translate([0, -80, 0]) mirror([1, 0, 0]) x_end_idler(thru=true); |
122 | translate([-50, 0, 0]) mirror([1, 0, 0]) translate([-50, 0, 0]) | |
123 | x_end_motor(); | |
d3618a65 | 124 | |
690004c7 | 125 | module pushfit_rod(diameter, length){ |
c7eb29ba | 126 | cylinder(h = length, r=diameter/2, $fn=30); |
82bba690 | 127 | translate([0, -diameter/4, length/2]) cube_fillet([diameter, diameter/2, length], vertical = [0, 0, 1, 1], center = true, $fn=4); |
d3618a65 | 128 | |
82bba690 | 129 | translate([0, -diameter/2-1.2, length/2]) cube([diameter - 1, 1, length], center = true); |
d3618a65 | 130 | } |
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131 | |
132 | if (idler_bearing[3] == 1) { | |
0f6ec51a | 133 | translate([-25, -30 - idler_bearing[0] / 2, 0]) { |
eff6608e VAH |
134 | render() bearing_guide_inner(); |
135 | translate([idler_bearing[0]+10, 0, 0]) | |
136 | render()bearing_guide_outer(); | |
137 | } | |
138 | } |