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[clinton/prusa3.git] / box_frame / z-axis.scad
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2159eed1
VAH		 1// PRUSA iteration3
2// Z axis
3// GNU GPL v3
4// Josef Průša <josefprusa@me.com>
5// Václav 'ax' Hůla <axtheb@gmail.com>
6// http://www.reprap.org/wiki/Prusa_Mendel
8e93419f 7// http://github.com/josefprusa/Prusa3
2159eed1 8
65a72cd5
T		 9// ThingDoc entries
10/**
11 * @id zMotorHolder
12 * @name Z Axis Motor Holder
13 * @category Printed
14 */
1fbe5b71 15
65a72cd5
T		 16/**
17 * @id zRodHolder
18 * @name Z Axis Rod Holder
19 * @category Printed
20 */
1fbe5b71
CE		 21
22// todo
23
1fbe5b71
CE		 24// - fix changing board_thickness, add way to specify # of bolts in
25// side of frame (assume even spacing for now)
26
3506b70b
VAH		 27include <configuration.scad>
28
cec35279 29module zmotorholder(thickness=(frame_type == frame_single ? 38 : 23), bottom_thickness=5){
231035dc 30 // fixme: board_to_xz_distance in position_y feels iffy
fb91eeba
CE		 31 position_y = board_to_xz_distance + zaxis_delta_y + zmotor_delta_y;
32 position_x = board_to_xz_distance + zaxis_delta_x + zmotor_delta_x;
3506b70b
VAH		 33 difference(){
34 union(){
35 // Motor holding part
36 difference(){
37 union(){
d4f661da 38 zrodholder(thickness=thickness, xlen=45 + zmotor_delta_x + zaxis_delta_x, ylen=48 + 5 + zmotor_delta_y + zaxis_delta_y, zdelta=((i_want_to_use_single_plate_dxf_and_make_my_z_weaker == 0) ? 0 : 5), bottom_x = 14 + zaxis_delta_x + zmotor_delta_x, bottom_y = 15 + zmotor_delta_y + zaxis_delta_y, am_top=0, bottom_thickness=bottom_thickness);
fb91eeba 39 translate([position_x, position_y, 0]) {
231035dc 40 nema17(places=[0, 1, 1, 1], h=bottom_thickness + layer_height, $fn=23, shadow=false/*layer_height + 2*/);
3506b70b
VAH		 41 }
42 }
846248f3 43 // remove any interfering walls
231035dc
CE		 44 translate([5 + zaxis_delta_x + zmotor_delta_x, 5 + zaxis_delta_y + zmotor_delta_y, -42.001]) {
45 cube([43,43,42]);
fb91eeba
CE		 46 }
47
1fbe5b71
CE		 48 // motor rotor clearance
49 translate([position_x, position_y, 0]) {
231035dc 50 #cylinder(r=11,h=20, center = true);
846248f3 51 }
d3618a65 52
3506b70b 53 // motor screw holes
cec35279
CE		 54
55 // FIXME: y = board_to_xz distance looks supicious --
56 // the smooth rod is offset by a fixed amount so why
57 // would the motor mount be moved in both directions
58 // instead of just away from the frame? X-axis does
59 // not use this to offset the leadscrew hole either.
fb91eeba 60 translate([position_x, position_y, thickness]) {
5e8013bd 61 mirror([0, 0, 1]) translate([0, 0, thickness-8])
231035dc 62 nema17(places=[1, 1, 1, 1], holes=true, h=bottom_thickness + 1, $fn=small_hole_segments);
854f95f0 63 //shadow=-6 + layer_height);
3506b70b
VAH		 64 }
65 }
66 }
67 }
d3618a65 68}
3506b70b
VAH		 69
70
cec35279 71module zrodholder(thickness=(frame_type == frame_single ? 14 : 15), bottom_thickness=5, ylen=44, xlen=34, zdelta=0, bottom_y=14, bottom_x=14, am_top=1){
5cae2970 72 holder_inner_r = 9;
0f6ec51a 73 holder_inner_r2 = 2;
d4f661da 74 smooth_rod_insert_radius = bushing_z[0] + 6 * single_wall_width;
3506b70b
VAH		 75 difference(){
76 union(){
3506b70b 77 difference(){
cec35279 78 union() {
3506b70b 79 //piece along the flat side of a board
231035dc 80 cube_fillet([bottom_x, ylen, bottom_thickness], vertical=[8, 3, 0, 0]);
cec35279
CE		 81 if (frame_type == frame_alu) {
82 top_radius = am_top ? thickness : thickness / 3;
231035dc 83 translate ([0, 0, -thickness + bottom_thickness]) cube_fillet([5, ylen, thickness], vertical=[0, 0, 0, 0], bottom = [top_radius, 0, 0, 0]);
cec35279 84
1fbe5b71
CE		 85 // FIXME: make rear/top bit optional, but don't remove entirely
86 // (printer seems to make less noise with the rear bit)
87 %if (am_top) {
cec35279 88 // rear bracket
231035dc
CE		 89 translate ([-board_thickness - 5, 0, -thickness + bottom_thickness])
90 cube_fillet([5, ylen, thickness], vertical=[0, 0, 0, 0], bottom = [top_radius, 0, 0, 0]);
91 translate ([-board_thickness, 5, bottom_thickness/2])
cec35279
CE		 92 cube ([board_thickness, ylen - 6, bottom_thickness/2]);
93 }
94 }
95 else {
96 cube_fillet([5, ylen, thickness], vertical=[3, 3, 0, 0], top = [thickness / 1.7, 0, 0, 5]);
97 }
98
99 //hole for Z axis is thru this
846248f3 100 cube_fillet([xlen + zaxis_delta_x, bottom_y, bottom_thickness], vertical=[3, 0, 0, 3]);
fb91eeba 101 if (bottom_x < board_to_xz_distance - z_delta + zaxis_delta_x) {
9865d15a
CE		 102 translate([bottom_x, bottom_y, 0]) {
103 //large fillet that makes it stiffer by lot. Thanks to Marcus Wolschon
104 difference(){
105 cube([holder_inner_r, holder_inner_r, bottom_thickness]);
106 translate([holder_inner_r, holder_inner_r, -0.5])
107 cylinder(r=holder_inner_r, h=bottom_thickness + 1);
108 }
109 }
110 }
cec35279
CE		 111 if (frame_type != frame_alu) {
112 translate([5, 5, 0]) {
113 difference(){
114 cube([holder_inner_r2, holder_inner_r2, thickness - 5.5]);
115 translate([holder_inner_r2, holder_inner_r2, -0.5])
116 cylinder(r=holder_inner_r2, h=thickness + 1, $fn=20);
117 }
118 }
0f6ec51a 119 }
0802ac49
CE		 120 // leadscrew bearing hole is cut from this
121 if (am_top) {
fb91eeba
CE		 122 lead_bearing_y = board_to_xz_distance + zaxis_delta_y + zmotor_delta_y;
123 lead_bearing_x = board_to_xz_distance + zaxis_delta_x + zmotor_delta_x;
231035dc 124 translate ([lead_bearing_x, lead_bearing_y, -(bearing_608[2] + layer_height * 6 - bottom_thickness)]) cylinder (d = bearing_608[0] + single_wall_width * 6, h = bearing_608[2] + layer_height*6);
0802ac49 125 }
3506b70b 126 //piece along cut side of the board
cec35279
CE		 127 if (frame_type == frame_box) {
128 translate([-board_thickness, 0, 0])
129 cube_fillet([board_thickness + board_to_xz_distance + bushing_z[0], 5, thickness], radius=2, top = [0, 0, 0, thickness], $fn=99);
130 } else if (frame_type == frame_alu) {
1fbe5b71 131 side_thickness = 5.0;// - zaxis_delta_y;
846248f3 132
1fbe5b71
CE		 133 translate ([0, 0 /* zaxis_delta_y */, 0]) {
134 // back
231035dc 135 translate([-board_thickness, 0, -thickness + bottom_thickness]) {
1fbe5b71
CE		 136 cube_fillet([board_thickness, side_thickness, thickness], vertical = [0, 0, 0, 0], top = [0, 0, 0, 0]);
137 }
138
139 // front
231035dc
CE		 140 front_support_thickness = thickness / (am_top ? 1 : 1.5);
141 translate ([0, 0, -front_support_thickness + bottom_thickness]) cube_fillet([am_top ? board_to_xz_distance + zaxis_delta_x - smooth_rod_insert_radius : xlen , side_thickness, front_support_thickness], vertical = [0, 0, 0, 0], bottom = [0, 0, 0, thickness]);
1fbe5b71 142 }
846248f3 143
d4f661da
CE		 144 if (zaxis_delta_x > 0 || zaxis_delta_y < 0) {
145 // extra support along edge of smooth rod hole, if it has been moved away from the frame
146 radius_diff = smooth_rod_insert_radius - bushing_z[0];
147 hull () {
231035dc
CE		 148 translate([-board_thickness/3, zaxis_delta_x/3, -(thickness/2 - bottom_thickness)]) {
149 cube_fillet([board_thickness/3 + board_to_xz_distance + zaxis_delta_x - bushing_z[0] , -zaxis_delta_y/3 , thickness/2], vertical = [2, 0, 4, 0], bottom = [0, 0, 4, thickness/2]);
d4f661da 150 }
231035dc
CE		 151 translate([board_to_xz_distance/2, zaxis_delta_y + radius_diff/6, - bottom_thickness]) {
152 cube_fillet([board_to_xz_distance/2 + zaxis_delta_x + smooth_rod_insert_radius*0.75, radius_diff/3 , bottom_thickness*2], vertical = [2, 0, 4, bushing_z[0] * smooth_rod_insert_radius/bushing_z[0]], bottom = [0, 0, 2, thickness/4]);
d4f661da 153 }
846248f3 154 }
cec35279 155 }
5e8013bd 156 } else {
eb40b77a 157 translate([-board_thickness/2, 0, 0])
0f6ec51a 158 cube_fillet([board_thickness/2 + board_to_xz_distance + bushing_z[0], 5, thickness], radius=2, top = [0, 0, 0, thickness], $fn=99);
5e8013bd
VAH		 159 }
160 //smooth rod insert
231035dc
CE		 161 rod_insert_h = bottom_thickness * (am_top ? 1.75 : 1.75);
162 translate([board_to_xz_distance - z_delta + zaxis_delta_x, 9 + zaxis_delta_y, -rod_insert_h + bottom_thickness])
163 cylinder(h=rod_insert_h, r=smooth_rod_insert_radius);
3506b70b 164 }
0802ac49
CE		 165
166 // === difference ===
167
3506b70b 168 //smooth rod hole
231035dc
CE		 169 rod_insert_hole_h = am_top ? thickness+20 : bottom_thickness;
170 translate([board_to_xz_distance - z_delta + zaxis_delta_x, 9 + zaxis_delta_y, bottom_thickness - rod_insert_hole_h]) cylinder(h=rod_insert_hole_h + 1, r=bushing_z[0] + single_wall_width / 4);
3506b70b 171 //inside rouned corner
cec35279
CE		 172 if (frame_type != frame_alu) {
173 translate([0, 5, -1]) cylinder(r=0.8, h=100, $fn=8);
174 }
175
0802ac49
CE		 176 // leadscrew hole
177 if (am_top) {
fb91eeba
CE		 178 lead_bearing_y = board_to_xz_distance + zaxis_delta_y + zmotor_delta_y;
179 lead_bearing_x = board_to_xz_distance + zaxis_delta_x + zmotor_delta_x;
231035dc 180 translate ([lead_bearing_x, lead_bearing_y, bottom_thickness - bearing_608[2]]) {
d4f661da 181 union () {
231035dc
CE		 182 translate ([0, 0, -bearing_608[2]*2 + 1]) cylinder (d = 10.8, h = bearing_608[2]*2);
183 translate ([0, 0, 0]) cylinder (d = bearing_608[0], h = bearing_608[2]+1);
0802ac49
CE		 184 }
185 }
186 }
187
5e8013bd 188 //front screws
cec35279
CE		 189 if (frame_type == frame_single) {
190 //single plate has both screws on front
191 translate([16, 35, bottom_thickness + 4.5 + zdelta]) rotate([0, -90, 0]) {
192 plate_screw();
193 }
194 translate([16, 15, bottom_thickness + 4.5 + zdelta]) rotate([0, -90, 0]) {
195 plate_screw();
196 }
197 //motor mount has third screw
198 translate([16, 25, bottom_thickness + 4.5 + zdelta + 20]) rotate([0, -90, 0]) {
199 plate_screw();
200 }
201 } else if (frame_type == frame_alu) {
202 // three screws on front
231035dc
CE		 203 translate([18, ylen - board_thickness/2, bottom_thickness/2 - board_thickness/2 + zdelta]) rotate([0, -90, 0]) plate_screw();
204 translate([18, 5 + board_thickness/2, bottom_thickness/2 - board_thickness/2 + zdelta]) rotate([0, -90, 0]) plate_screw();
205 translate([18, 5 + board_thickness/2, -thickness + bottom_thickness + board_thickness/2]) rotate([0, -90, 0])
cec35279
CE		 206 plate_screw();
207
208 // motor mount screw for opposite extrusion
231035dc 209 translate([18, ylen - board_thickness/2, -thickness + bottom_thickness + board_thickness/2]) rotate([0, -90, 0])
cec35279
CE		 210 plate_screw();
211
212 // back plate
231035dc 213 translate([-board_thickness-18, ylen - board_thickness/2, -thickness + bottom_thickness + board_thickness/2]) rotate([0, 90, 0])
cec35279 214 plate_screw();
231035dc 215 translate([-board_thickness-18, 5 + board_thickness/2, -thickness + bottom_thickness + board_thickness/2]) rotate([0, 90, 0])
cec35279 216 plate_screw();
231035dc
CE		 217 translate([-board_thickness-18, ylen - board_thickness/2, bottom_thickness/2 - board_thickness/2 + zdelta]) rotate([0, 90, 0]) plate_screw();
218 translate([-board_thickness-18, 5 + board_thickness/2, bottom_thickness/2 - board_thickness/2 + zdelta]) rotate([0, 90, 0]) plate_screw();
cec35279
CE		 219
220 //side screws
231035dc
CE		 221 translate([-board_thickness/2, -13, bottom_thickness + board_thickness/2 - thickness]) rotate([-90, 0, 0]) plate_screw();
222 translate([-board_thickness/2, -13, bottom_thickness/2 - board_thickness/2 + zdelta]) rotate([-90, 0, 0]) plate_screw();
cec35279
CE		 223 } else if (frame_type == frame_box) {
224 translate([16, 30, bottom_thickness+4]) rotate([0, -90, 0]) {
225 plate_screw();
226 }
5e8013bd 227 //side screw
0f6ec51a 228 translate([-board_thickness/2, -11, thickness/2]) rotate([-90, 0, 0]) plate_screw();
b32bbd0f 229 }
3506b70b
VAH		 230 }
231 }
232 }
d3618a65 233}
1422dcbd
CE		 234
235if (frame_type == frame_alu) {
231035dc 236 //zmotorholder(thickness=55, bottom_thickness=6);
1422dcbd 237 // 2020 aluminum frame parts are larger
231035dc
CE		 238 rotate ([0, 180, 0]) {
239 translate([0, -60, 0]) zmotorholder(thickness=55, bottom_thickness=6);
240 translate([0, 60, 0]) mirror([0, 1, 0]) zmotorholder(thickness=55, bottom_thickness=6);
7b8e1e54 241
231035dc
CE		 242 translate([110 + board_thickness, board_thickness+10, 0]) rotate([0,0,90]) zrodholder(thickness=board_thickness * 2 + 5, ylen = board_thickness * 2 + 10, bottom_x=43 + zaxis_delta_x, bottom_thickness=6);
243 translate([110 + board_thickness, -(board_thickness+10), 0]) rotate([0, 0, -90]) mirror([0, 1, 0]) zrodholder(thickness=board_thickness * 2 + 5, ylen = board_thickness * 2 + 10, bottom_x=43 + zaxis_delta_x, bottom_thickness=6);
244 }
1422dcbd
CE		 245}
246else {
247 translate([10, -50, 0]) zmotorholder();
248 translate([0, 50, 0]) mirror([0, 1, 0]) zmotorholder();
249 translate([67, 14, 0]) rotate([0,0,90]) zrodholder();
250 translate([77, -14, 0]) rotate([0, 0, -90]) mirror([0, 1, 0]) zrodholder();
251}
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