author | Michael Krelin <hacker@klever.net> | 2018-08-02 10:35:31 (UTC) |
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committer | Michael Krelin <hacker@klever.net> | 2018-08-02 10:35:31 (UTC) |
commit | df23f0042d72bfcc7ba1638a2209545cbfe89825 (patch) (unidiff) | |
tree | 032488f7b983f5c7dfbd113a4a084d62a77695d0 /another.scad | |
parent | a04582d4c163c58bd779e02e3de624ccd1f643f4 (diff) | |
download | extrudery-df23f0042d72bfcc7ba1638a2209545cbfe89825.zip extrudery-df23f0042d72bfcc7ba1638a2209545cbfe89825.tar.gz extrudery-df23f0042d72bfcc7ba1638a2209545cbfe89825.tar.bz2 |
another: work being done on spring tensioner
-rw-r--r-- | another.scad | 57 |
1 files changed, 50 insertions, 7 deletions
diff --git a/another.scad b/another.scad index 2be24e4..844dc3b 100644 --- a/another.scad +++ b/another.scad | |||
@@ -1,104 +1,110 @@ | |||
1 | draft=true; | 1 | draft=true; |
2 | layer_height=0.2; extrusion_width=0.4; | 2 | layer_height=0.2; extrusion_width=0.4; |
3 | epsilon=0.01; | 3 | epsilon=0.01; |
4 | $fs=0.0125; | 4 | $fs=0.0125; |
5 | 5 | ||
6 | use <pushfittery.scad>; | 6 | use <pushfittery.scad>; |
7 | include <pushfit_data.scad>; | 7 | include <pushfit_data.scad>; |
8 | 8 | ||
9 | module the_extruder( | 9 | module the_extruder( |
10 | // motor properties | 10 | // motor properties |
11 | gearbox_d = 36, | 11 | gearbox_d = 36, |
12 | mount_d = 28, // the distance between opposite mounting holes | 12 | mount_d = 28, // the distance between opposite mounting holes |
13 | mounthole_depth = 5, | 13 | mounthole_depth = 5, |
14 | protrusion_d = 22, protrusion_h = 2.2, // the dimensions of the protrusion on top of gearbox | 14 | protrusion_d = 22, protrusion_h = 2.2, // the dimensions of the protrusion on top of gearbox |
15 | bore_d = 8, bore_l = 17.6, | 15 | bore_d = 8, bore_l = 17.6, |
16 | bore_dd = 7, | 16 | bore_dd = 7, |
17 | // pulley properties | 17 | // pulley properties |
18 | pulley_d = 11.5, pulley_h=10, | 18 | pulley_d = 11.5, pulley_h=10, |
19 | pulley_elevation = 1, // pulley elevation above the protrusion | 19 | pulley_elevation = 1, // pulley elevation above the protrusion |
20 | teeth_elevation = 7.5, // distance from the bottom of the pulley to its teeth | 20 | teeth_elevation = 7.5, // distance from the bottom of the pulley to its teeth |
21 | // idler properties | 21 | // idler properties |
22 | idler_d = 9.5, idler_h = 4, idler_id = 3,// idler dimensions: outer and inner diameters and height | 22 | idler_d = 9.5, idler_h = 4, idler_id = 3,// idler dimensions: outer and inner diameters and height |
23 | // spring properties | 23 | // spring properties |
24 | spring_d = 10, spring_lc = 9.6, // spring diameter and compressed length | 24 | spring_d = 10, spring_lc = 9.6, // spring diameter and compressed length |
25 | // filament path properties | 25 | // filament path properties |
26 | filament_d = 1.75, | 26 | filament_d = 1.75, |
27 | filament_path_d = 2, | 27 | filament_path_d = 2, |
28 | filament_guide_d = 4, // PTFE filament guide diameter | 28 | filament_guide_d = 4, // PTFE filament guide diameter |
29 | // knob properties | 29 | // knob properties |
30 | knob_h = 10, | 30 | knob_h = 10, |
31 | knob_bore_l = 4, | 31 | knob_bore_l = 4, |
32 | knob_indent_d = 4, | 32 | knob_indent_d = 4, |
33 | knob_indents = 12, | 33 | knob_indents = 12, |
34 | // spring tensioner | ||
35 | st_nut_d = 9, st_nut_h = 4, | ||
36 | st_screw_d = 5, | ||
37 | st_shell = 4*extrusion_width, | ||
34 | 38 | ||
35 | // screw it | 39 | // screw it |
36 | mount_screw_d = 3.1, mount_screw_l = 20, | 40 | mount_screw_d = 3.1, mount_screw_l = 20, |
37 | mount_screwhead_d=6, mount_screwhead_h=3, | 41 | mount_screwhead_d=6, mount_screwhead_h=3, |
38 | 42 | ||
39 | pf = pushfit_embeddest, | 43 | pf = pushfit_embeddest, |
40 | 44 | ||
41 | // empty spaces | 45 | // empty spaces |
42 | idler_travel = 3, // how far should idler travel when pressed | 46 | idler_travel = 3, // how far should idler travel when pressed |
43 | idler_clearance=1, | 47 | idler_clearance=1, |
44 | pulley_clearance=2, | 48 | pulley_clearance=2, |
45 | lever_v_clearance=.7, // vertical clearance for the lever | 49 | lever_v_clearance=.7, // vertical clearance for the lever |
46 | spring_d_clearance=1, | 50 | spring_d_clearance=1, |
47 | protrusion_tolerance_h=.5, // horizontal tolerance for the motor protrusion | 51 | protrusion_tolerance_h=.5, // horizontal tolerance for the motor protrusion |
48 | protrusion_tolerance_v=.5, // vertical tolerance for the motor protrusion | 52 | protrusion_tolerance_v=.5, // vertical tolerance for the motor protrusion |
49 | mount_screw_d_tolerance=.4, | 53 | mount_screw_d_tolerance=.4, |
50 | idler_v_tolerance=.5, | 54 | idler_v_tolerance=.5, |
51 | knob_bore_d_tolerance=.6, | 55 | knob_bore_d_tolerance=.6, |
52 | 56 | ||
53 | what="lever", | 57 | what="lever", // lever|body|knob|springpad|* |
54 | left=false, | 58 | left=false, |
55 | vitamins = true, | 59 | vitamins = true, |
56 | supports = false | 60 | supports = false, |
61 | tensioner = true, | ||
62 | debug = false | ||
57 | ) { | 63 | ) { |
58 | lever_shell = mount_screwhead_h+0.5; | 64 | lever_shell = mount_screwhead_h+0.5; |
59 | lever_thickness=max(spring_d+layer_height*8,idler_h+idler_v_tolerance+2*lever_shell); | 65 | lever_thickness=max(spring_d+layer_height*8,idler_h+idler_v_tolerance+2*lever_shell); |
60 | lsd = idler_d-idler_clearance*2; | 66 | lsd = idler_d-idler_clearance*2; |
61 | longwing=gearbox_d/2+spring_d/2+lsd/2; | 67 | longwing=gearbox_d/2+spring_d/2+lsd/2; |
62 | h_ = (pulley_d+idler_d)/(2*sqrt(2)); | 68 | h_ = (pulley_d+idler_d)/(2*sqrt(2)); |
63 | ri = sqrt( pow(h_,2) + pow(mount_d/2-h_,2) ); | 69 | ri = sqrt( pow(h_,2) + pow(mount_d/2-h_,2) ); |
64 | spring_dl = idler_travel*longwing/ri; | 70 | spring_dl = idler_travel*longwing/ri; |
65 | 71 | ||
66 | filament_elevation=protrusion_h+pulley_elevation+teeth_elevation; | 72 | filament_elevation=protrusion_h+pulley_elevation+teeth_elevation; |
67 | ls_z = filament_elevation; // leverspace mid-z | 73 | ls_z = filament_elevation; // leverspace mid-z |
68 | body_h = max(protrusion_h+bore_l,mount_screw_l-mounthole_depth/2+mount_screwhead_h,ls_z*2); | 74 | body_h = max(protrusion_h+bore_l,mount_screw_l-mounthole_depth/2+mount_screwhead_h,ls_z*2); |
69 | ls_h = lever_thickness+lever_v_clearance; // leverspace height | 75 | ls_h = lever_thickness+lever_v_clearance; // leverspace height |
70 | 76 | ||
71 | module mirrorleft() { | 77 | module mirrorleft() { |
72 | mirror([left?0:1,0,0]) children(); | 78 | mirror([left?0:1,0,0]) children(); |
73 | } | 79 | } |
74 | module place_idler() { | 80 | module place_idler() { |
75 | rotate([0,0,45]) | 81 | rotate([0,0,45]) |
76 | translate([(pulley_d+idler_d)/2,0,0]) | 82 | translate([(pulley_d+idler_d)/2,0,0]) |
77 | children(); | 83 | children(); |
78 | } | 84 | } |
79 | module finger_indent(d=lever_thickness,depth/*=1*/,r/*=15*/) { | 85 | module finger_indent(d=lever_thickness,depth/*=1*/,r/*=15*/) { |
80 | if(depth) { | 86 | if(depth) { |
81 | hh = (-4*pow(depth,2)+pow(d,2))/(8*depth); | 87 | hh = (-4*pow(depth,2)+pow(d,2))/(8*depth); |
82 | rr = depth+hh; | 88 | rr = depth+hh; |
83 | translate([0,0,hh]) sphere(r=rr,$fn=2*PI*rr); | 89 | translate([0,0,hh]) sphere(r=rr,$fn=2*PI*rr); |
84 | }else if(r) { | 90 | }else if(r) { |
85 | hh=sqrt(pow(r,2)-pow(d,2)/4); | 91 | hh=sqrt(pow(r,2)-pow(d,2)/4); |
86 | translate([0,0,hh]) sphere(r=r,$fn=2*PI*r); | 92 | translate([0,0,hh]) sphere(r=r,$fn=2*PI*r); |
87 | } | 93 | } |
88 | } | 94 | } |
89 | 95 | ||
90 | % if(vitamins) mirrorleft() { | 96 | % if(vitamins) mirrorleft() { |
91 | translate([0,0,-epsilon]) mirror([0,0,1]) cylinder(d=gearbox_d,h=1,$fn=60); | 97 | translate([0,0,-epsilon]) mirror([0,0,1]) cylinder(d=gearbox_d,h=1,$fn=60); |
92 | for(zr=[0:90:359]) rotate([0,0,zr]) translate([mount_d/2,0,0]) | 98 | for(zr=[0:90:359]) rotate([0,0,zr]) translate([mount_d/2,0,0]) |
93 | cylinder(d=mount_screw_d,h=20,$fn=30); | 99 | cylinder(d=mount_screw_d,h=20,$fn=30); |
94 | translate([0,0,-epsilon]) cylinder(d=protrusion_d,h=protrusion_h,$fn=30); | 100 | translate([0,0,-epsilon]) cylinder(d=protrusion_d,h=protrusion_h,$fn=30); |
95 | translate([0,0,protrusion_h]) { | 101 | translate([0,0,protrusion_h]) { |
96 | difference() { | 102 | difference() { |
97 | cylinder(d=bore_d,h=bore_l,$fn=30); | 103 | cylinder(d=bore_d,h=bore_l,$fn=30); |
98 | translate([-bore_d/2-1,bore_dd-bore_d/2,-1]) | 104 | translate([-bore_d/2-1,bore_dd-bore_d/2,-1]) |
99 | cube([bore_d+2,bore_d/2,bore_l+2]); | 105 | cube([bore_d+2,bore_d/2,bore_l+2]); |
100 | } | 106 | } |
101 | translate([0,0,pulley_elevation]) { | 107 | translate([0,0,pulley_elevation]) { |
102 | cylinder(d=pulley_d,h=pulley_h,$fn=30); | 108 | cylinder(d=pulley_d,h=pulley_h,$fn=30); |
103 | translate([0,0,teeth_elevation]) { | 109 | translate([0,0,teeth_elevation]) { |
104 | place_idler() { | 110 | place_idler() { |
@@ -152,186 +158,223 @@ module the_extruder( | |||
152 | } | 158 | } |
153 | cylinder(d=mount_screw_d+mount_screw_d_tolerance,h=lever_thickness+2,center=true,$fn=30); | 159 | cylinder(d=mount_screw_d+mount_screw_d_tolerance,h=lever_thickness+2,center=true,$fn=30); |
154 | translate([0,0,lever_thickness/2-mount_screwhead_h]) | 160 | translate([0,0,lever_thickness/2-mount_screwhead_h]) |
155 | cylinder(d=mount_screwhead_d,h=mount_screwhead_h+1,$fn=2*PI*mount_screwhead_d); | 161 | cylinder(d=mount_screwhead_d,h=mount_screwhead_h+1,$fn=2*PI*mount_screwhead_d); |
156 | } | 162 | } |
157 | // mounting screw hole | 163 | // mounting screw hole |
158 | translate([mount_d/2,0,0]) | 164 | translate([mount_d/2,0,0]) |
159 | cylinder(d=mount_screw_d+mount_screw_d_tolerance,h=lever_thickness+2,center=true,$fn=2*PI*mount_screw_d); | 165 | cylinder(d=mount_screw_d+mount_screw_d_tolerance,h=lever_thickness+2,center=true,$fn=2*PI*mount_screw_d); |
160 | 166 | ||
161 | // lever end | 167 | // lever end |
162 | translate([mount_d/2,0,0]) rotate([0,90,0]) { | 168 | translate([mount_d/2,0,0]) rotate([0,90,0]) { |
163 | translate([0,-longwing,lsd/2]) finger_indent(d=lever_thickness-1,r=15); | 169 | translate([0,-longwing,lsd/2]) finger_indent(d=lever_thickness-1,r=15); |
164 | translate([0,-longwing,0]) | 170 | translate([0,-longwing,0]) |
165 | mirror([0,0,1]) | 171 | mirror([0,0,1]) |
166 | difference() { | 172 | difference() { |
167 | cylinder(d=spring_d+spring_d_clearance,h=lsd,$fn=2*PI*spring_d); | 173 | cylinder(d=spring_d+spring_d_clearance,h=lsd,$fn=2*PI*spring_d); |
168 | sphere(d=spring_d*3/4,$fn=PI*spring_d); | 174 | sphere(d=spring_d*3/4,$fn=PI*spring_d); |
169 | } | 175 | } |
170 | }//rotate-translate | 176 | }//rotate-translate |
171 | }//difference | 177 | }//difference |
172 | // bridging patch | 178 | // bridging patch |
173 | place_idler() | 179 | place_idler() |
174 | translate([0,0,lever_thickness/2-mount_screwhead_h]) | 180 | translate([0,0,lever_thickness/2-mount_screwhead_h]) |
175 | mirror([0,0,1]) | 181 | mirror([0,0,1]) |
176 | cylinder(d=mount_screwhead_d,h=layer_height); | 182 | cylinder(d=mount_screwhead_d,h=layer_height); |
177 | }//translate | 183 | }//translate |
178 | }//lever module | 184 | }//lever module |
179 | 185 | ||
180 | module body() { | 186 | module body() { |
181 | difference() { | 187 | difference() { |
182 | union() { | 188 | union() { |
183 | cylinder(d=gearbox_d,h=body_h,$fn=2*PI*gearbox_d); | 189 | cylinder(d=gearbox_d,h=body_h,$fn=2*PI*gearbox_d); |
184 | // finger and spring support | 190 | // finger and spring support |
185 | fsw = gearbox_d/2+mount_screwhead_d/2; | 191 | fsw = gearbox_d/2+mount_screwhead_d/2; |
186 | translate([-gearbox_d/2,0,0]) difference() { | 192 | translate([-gearbox_d/2,0,0]) difference() { |
187 | union() { | 193 | union() { |
188 | hull() { | 194 | hull() { |
189 | translate([0,-longwing,ls_z]) | 195 | translate([0,-longwing,ls_z]) |
190 | rotate([0,90,0]) | 196 | rotate([0,90,0]) |
191 | cylinder(d=max(lever_thickness,spring_d+spring_d_clearance+2*extrusion_width),h=fsw,$fn=2*PI*lever_thickness); | 197 | cylinder(d=max(lever_thickness,spring_d+spring_d_clearance+2*extrusion_width),h=fsw,$fn=2*PI*lever_thickness); |
192 | hh=body_h-ls_z; | 198 | hh=body_h-ls_z; |
193 | translate([0,0,ls_z-lever_thickness/2]) | 199 | translate([0,0,ls_z-lever_thickness/2]) |
194 | mirror([0,1,0]) cube(size=[fsw,longwing-hh+lever_thickness/sqrt(2),hh+lever_thickness/2]); | 200 | mirror([0,1,0]) cube(size=[fsw,longwing-hh+lever_thickness/sqrt(2),hh+lever_thickness/2]); |
195 | hhh=ls_z; | 201 | hhh=ls_z; |
196 | translate([0,0,0]) | 202 | translate([0,0,0]) |
197 | mirror([0,1,0]) cube(size=[fsw,longwing-hhh+lever_thickness/sqrt(2),hhh+lever_thickness/2]); | 203 | mirror([0,1,0]) cube(size=[fsw,longwing-hhh+lever_thickness/sqrt(2),hhh+lever_thickness/2]); |
198 | } | 204 | } |
199 | } | 205 | } |
200 | translate([0,-longwing,ls_z]) rotate([0,-90,0]) | 206 | translate([0,-longwing,ls_z]) rotate([0,-90,0]) { |
201 | finger_indent(d=lever_thickness-1,r=15); | 207 | if(!tensioner) finger_indent(d=lever_thickness-1,r=15); else { |
208 | if(debug) translate([0,-gearbox_d,-gearbox_d]) cube(size=[body_h/2+1,gearbox_d,gearbox_d+2]); | ||
209 | mirror([0,0,1]) { | ||
210 | translate([0,0,st_shell]) | ||
211 | hull() for(o=[0,spring_d]) translate([0,-o,0]) | ||
212 | rotate([0,0,30]) | ||
213 | cylinder(d=st_nut_d,h=st_nut_h,$fn=6); | ||
214 | translate([0,0,-1]) cylinder(d=st_screw_d,h=fsw+2,$fn=st_screw_d*PI*2); | ||
215 | bigd = spring_d+spring_d_clearance; | ||
216 | hf = (bigd-st_screw_d)/2; | ||
217 | translate([0,0,st_shell+st_nut_h+st_shell-epsilon]) | ||
218 | cylinder(d1=st_screw_d,d2=bigd, | ||
219 | h=hf+epsilon, $fn=bigd*PI*2 ); | ||
220 | translate([0,0,st_shell+st_nut_h+st_shell+hf-epsilon]) | ||
221 | cylinder(d=bigd,h=fsw+1,$fn=bigd*PI*2); | ||
222 | } | ||
223 | } | ||
224 | } | ||
202 | } // translate | 225 | } // translate |
203 | 226 | ||
204 | // pushfit bracket | 227 | // pushfit bracket |
205 | translate([0,0,filament_elevation]) | 228 | translate([0,0,filament_elevation]) |
206 | rotate([0,0,45]) translate([pulley_d/2,0,0]) | 229 | rotate([0,0,45]) translate([pulley_d/2,0,0]) |
207 | rotate([-90,0,0]) | 230 | rotate([-90,0,0]) |
208 | translate([0,0,mount_d/sqrt(2)/2+mount_screw_d-gearbox_d/2/*TODO:*/]) | 231 | translate([0,0,mount_d/sqrt(2)/2+mount_screw_d-gearbox_d/2/*TODO:*/]) |
209 | cylinder(r=min(body_h-filament_elevation,filament_elevation)/sin(60)-epsilon,h=pf_h(pf)+gearbox_d/2/*TODO:*/,$fn=6); | 232 | cylinder(r=min(body_h-filament_elevation,filament_elevation)/sin(60)-epsilon,h=pf_h(pf)+gearbox_d/2/*TODO:*/,$fn=6); |
210 | }//union (first child of difference) | 233 | }//union (first child of difference) |
211 | // protrusion | 234 | // protrusion |
212 | translate([0,0,-1]) | 235 | translate([0,0,-1]) |
213 | cylinder(d=protrusion_d+protrusion_tolerance_h,h=protrusion_h+protrusion_tolerance_v+1,$fn=2*PI*protrusion_d); | 236 | cylinder(d=protrusion_d+protrusion_tolerance_h,h=protrusion_h+protrusion_tolerance_v+1,$fn=2*PI*protrusion_d); |
214 | // mount screw holes | 237 | // mount screw holes |
215 | for(zr=[0:90:359]) rotate([0,0,zr]) translate([mount_d/2,0,0]) { | 238 | for(zr=[0:90:359]) rotate([0,0,zr]) translate([mount_d/2,0,0]) { |
216 | translate([0,0,mount_screw_l-mounthole_depth/2-layer_height-1]) | 239 | translate([0,0,mount_screw_l-mounthole_depth/2-layer_height-1]) |
217 | mirror([0,0,1]) | 240 | mirror([0,0,1]) |
218 | cylinder(d=mount_screw_d+mount_screw_d_tolerance, | 241 | cylinder(d=mount_screw_d+mount_screw_d_tolerance, |
219 | h=mount_screw_l-mounthole_depth/2-layer_height+1, | 242 | h=mount_screw_l-mounthole_depth/2-layer_height+1, |
220 | $fn=2*PI*mount_screw_d); | 243 | $fn=2*PI*mount_screw_d); |
221 | translate([0,0,mount_screw_l-mounthole_depth/2]) | 244 | translate([0,0,mount_screw_l-mounthole_depth/2]) |
222 | cylinder(d=mount_screwhead_d,h=body_h+1,$fn=2*PI*mount_screwhead_d); | 245 | cylinder(d=mount_screwhead_d,h=body_h+1,$fn=2*PI*mount_screwhead_d); |
223 | }//for | 246 | }//for |
224 | // pushfit | 247 | // pushfit |
225 | translate([0,0,filament_elevation]) | 248 | translate([0,0,filament_elevation]) |
226 | rotate([0,0,45]) translate([pulley_d/2,0,0]) | 249 | rotate([0,0,45]) translate([pulley_d/2,0,0]) |
227 | rotate([-90,0,0]) | 250 | rotate([-90,0,0]) |
228 | translate([0,0,mount_d/sqrt(2)/2+mount_screw_d+epsilon]) | 251 | translate([0,0,mount_d/sqrt(2)/2+mount_screw_d+epsilon]) |
229 | rotate([0,0,180]) { | 252 | rotate([0,0,180]) { |
230 | pushfit(pf); | 253 | pushfit(pf); |
231 | cylinder(d=filament_guide_d,h=gearbox_d,center=true,$fn=2*PI*filament_guide_d); | 254 | cylinder(d=filament_guide_d,h=gearbox_d,center=true,$fn=2*PI*filament_guide_d); |
232 | translate([0,-filament_guide_d/2/sqrt(2),0]) | 255 | translate([0,-filament_guide_d/2/sqrt(2),0]) |
233 | rotate([0,0,45]) | 256 | rotate([0,0,45]) |
234 | cube(size=[filament_guide_d/2,filament_guide_d/2,gearbox_d],center=true); | 257 | cube(size=[filament_guide_d/2,filament_guide_d/2,gearbox_d],center=true); |
235 | } | 258 | } |
236 | // pulley | 259 | // pulley |
237 | cylinder(d=pulley_d+pulley_clearance,h=body_h+1,$fn=2*PI*(pulley_d+pulley_clearance)); | 260 | cylinder(d=pulley_d+pulley_clearance,h=body_h+1,$fn=2*PI*(pulley_d+pulley_clearance)); |
238 | // leverspace | 261 | // leverspace |
239 | hull() for(x=[0,gearbox_d]) | 262 | hull() for(x=[0,gearbox_d]) |
240 | rotate([0,0,45]) | 263 | rotate([0,0,45]) |
241 | translate([x,0,ls_z-ls_h/2]) | 264 | translate([x,0,ls_z-ls_h/2]) |
242 | cylinder(d=idler_d+idler_clearance,h=ls_h,$fn=2*PI*idler_d); | 265 | cylinder(d=idler_d+idler_clearance,h=ls_h,$fn=2*PI*idler_d); |
243 | 266 | ||
244 | a=cos(45)*(pulley_d+idler_d)/2; | 267 | a=cos(45)*(pulley_d+idler_d)/2; |
245 | b=mount_d/2-a; | 268 | b=mount_d/2-a; |
246 | x=sqrt(pow(a,2)+pow(b,2)); | 269 | x=sqrt(pow(a,2)+pow(b,2)); |
247 | translate([mount_d/2,0,ls_z]) | 270 | translate([mount_d/2,0,ls_z]) |
248 | intersection() { | 271 | intersection() { |
249 | r = x+idler_d/2+1;/* TODO: */ | 272 | r = x+idler_d/2+1;/* TODO: */ |
250 | cylinder(r=r,h=ls_h,center=true); | 273 | cylinder(r=r,h=ls_h,center=true); |
251 | translate([-r-1,0,-1]) cube(size=[2*r+2,r+1,ls_h+2]); | 274 | translate([-r-1,0,-1]) cube(size=[2*r+2,r+1,ls_h+2]); |
252 | } | 275 | } |
253 | 276 | ||
254 | rotate([0,0,-45]) | 277 | rotate([0,0,-45]) |
255 | translate([0,0,ls_z-ls_h/2]) | 278 | translate([0,0,ls_z-ls_h/2]) |
256 | cube(size=[gearbox_d,gearbox_d,lever_thickness+lever_v_clearance]); | 279 | cube(size=[gearbox_d,gearbox_d,lever_thickness+lever_v_clearance]); |
257 | translate([0,0,ls_z-ls_h/2]) { | 280 | translate([0,0,ls_z-ls_h/2]) { |
258 | translate([mount_screwhead_d/2,0,0]) | 281 | translate([mount_screwhead_d/2,0,0]) |
259 | mirror([0,1,0]) | 282 | mirror([0,1,0]) |
260 | cube(size=[gearbox_d,gearbox_d/2+1,lever_thickness+lever_v_clearance]); | 283 | cube(size=[gearbox_d,gearbox_d/2+1,lever_thickness+lever_v_clearance]); |
261 | } | 284 | } |
262 | //translate([-mount_d/2,-longwing,filament_elevation]) | 285 | //translate([-mount_d/2,-longwing,filament_elevation]) |
263 | translate([mount_d/2,-longwing,filament_elevation]) | 286 | if(!tensioner) translate([mount_d/2,-longwing,filament_elevation]) |
264 | rotate([0,-90,0]) difference() { | 287 | rotate([0,-90,0]) difference() { |
265 | cylinder(d=spring_d+spring_d_clearance,h=spring_lc+spring_dl,$fn=PI*spring_d); | 288 | cylinder(d=spring_d+spring_d_clearance,h=spring_lc+spring_dl,$fn=PI*spring_d); |
266 | translate([0,0,spring_lc+spring_dl]) sphere(d=spring_d*3/4,$fn=PI*spring_d); | 289 | translate([0,0,spring_lc+spring_dl]) sphere(d=spring_d*3/4,$fn=PI*spring_d); |
267 | } | 290 | } |
268 | //sphere(d=spring_d*3/4,$fn=PI*spring_d); | 291 | //sphere(d=spring_d*3/4,$fn=PI*spring_d); |
269 | *difference() { | 292 | *difference() { |
270 | // spring support | 293 | // spring support |
271 | translate([0,-longwing,filament_elevation]) | 294 | translate([0,-longwing,filament_elevation]) |
272 | sphere(d=spring_d*3/4,$fn=PI*spring_d); | 295 | sphere(d=spring_d*3/4,$fn=PI*spring_d); |
273 | } | 296 | } |
274 | 297 | ||
275 | }//difference | 298 | }//difference |
276 | 299 | ||
277 | if(supports) intersection() { | 300 | if(supports) intersection() { |
278 | difference() { | 301 | difference() { |
279 | translate([0,0,ls_z-ls_h/2-epsilon]) | 302 | translate([0,0,ls_z-ls_h/2-epsilon]) |
280 | cylinder(d=gearbox_d,h=ls_h+2*epsilon,$fn=2*PI*gearbox_d); | 303 | cylinder(d=gearbox_d,h=ls_h+2*epsilon,$fn=2*PI*gearbox_d); |
281 | cylinder(d=pulley_d+pulley_clearance,h=body_h+1,$fn=2*PI*(pulley_d+pulley_clearance)); | 304 | cylinder(d=pulley_d+pulley_clearance,h=body_h+1,$fn=2*PI*(pulley_d+pulley_clearance)); |
282 | } | 305 | } |
283 | // supports | 306 | // supports |
284 | // TODO: hardcoded stuff below… | 307 | // TODO: hardcoded stuff below… |
285 | if(false) { // parallel | 308 | if(false) { // parallel |
286 | for(y=[-gearbox_d:4:gearbox_d]) | 309 | for(y=[-gearbox_d:4:gearbox_d]) |
287 | translate([0,y-extrusion_width/2,0]) | 310 | translate([0,y-extrusion_width/2,0]) |
288 | cube(size=[gearbox_d,extrusion_width,body_h]); | 311 | cube(size=[gearbox_d,extrusion_width,body_h]); |
289 | }else{ // radial | 312 | }else{ // radial |
290 | for(zr=[-65:(65+50)/7:50]) | 313 | for(zr=[-65:(65+50)/7:50]) |
291 | rotate([0,0,zr]) translate([0,-extrusion_width/2,0]) | 314 | rotate([0,0,zr]) translate([0,-extrusion_width/2,0]) |
292 | cube(size=[gearbox_d,extrusion_width,body_h]); | 315 | cube(size=[gearbox_d,extrusion_width,body_h]); |
293 | } | 316 | } |
294 | } | 317 | } |
295 | 318 | ||
296 | }//body module | 319 | }//body module |
297 | 320 | ||
321 | module springpad() { | ||
322 | smalld=st_screw_d+extrusion_width; | ||
323 | bigd = spring_d+spring_d_clearance/2; | ||
324 | hf = (bigd-smalld)/2; | ||
325 | translate([-gearbox_d/2+st_shell+st_nut_h+st_shell+smalld,-longwing,filament_elevation]) | ||
326 | rotate([0,90,0]) difference() { | ||
327 | union() { | ||
328 | cylinder(d1=smalld,d2=bigd,h=hf,$fn=bigd*PI*2); | ||
329 | translate([0,0,hf-epsilon]) | ||
330 | cylinder(d=bigd,h=hf*2,$fn=bigd*PI*2); | ||
331 | } | ||
332 | cylinder(d=st_screw_d,h=2*hf,$fn=st_screw_d*PI*2); | ||
333 | } | ||
334 | } | ||
335 | |||
298 | module knob() { | 336 | module knob() { |
299 | ch = knob_indent_d/2; | 337 | ch = knob_indent_d/2; |
300 | translate([0,0,body_h+epsilon]) { | 338 | translate([0,0,body_h+epsilon]) { |
301 | mirror([0,0,1]) translate([0,0,-epsilon]) { | 339 | mirror([0,0,1]) translate([0,0,-epsilon]) { |
302 | difference() { | 340 | difference() { |
303 | cylinder(d=pulley_d,h=knob_bore_l,$fn=pulley_d*PI*2); | 341 | cylinder(d=pulley_d,h=knob_bore_l,$fn=pulley_d*PI*2); |
304 | translate([0,0,-1]) difference() { | 342 | translate([0,0,-1]) difference() { |
305 | cylinder(d=bore_d+knob_bore_d_tolerance,h=knob_bore_l+2); | 343 | cylinder(d=bore_d+knob_bore_d_tolerance,h=knob_bore_l+2); |
306 | translate([-bore_d/2-1,bore_dd-bore_d/2+knob_bore_d_tolerance/2,-1]) | 344 | translate([-bore_d/2-1,bore_dd-bore_d/2+knob_bore_d_tolerance/2,-1]) |
307 | cube([bore_d+2,bore_d/2,knob_bore_l+4]); | 345 | cube([bore_d+2,bore_d/2,knob_bore_l+4]); |
308 | } | 346 | } |
309 | } | 347 | } |
310 | } | 348 | } |
311 | difference() { | 349 | difference() { |
312 | union() { | 350 | union() { |
313 | cylinder(d1=gearbox_d-2*ch,d2=gearbox_d,h=ch+epsilon,$fn=PI*gearbox_d*2); | 351 | cylinder(d1=gearbox_d-2*ch,d2=gearbox_d,h=ch+epsilon,$fn=PI*gearbox_d*2); |
314 | translate([0,0,ch]) | 352 | translate([0,0,ch]) |
315 | cylinder(d=gearbox_d,h=knob_h-2*ch+epsilon,$fn=PI*gearbox_d*2); | 353 | cylinder(d=gearbox_d,h=knob_h-2*ch+epsilon,$fn=PI*gearbox_d*2); |
316 | translate([0,0,knob_h-ch]) | 354 | translate([0,0,knob_h-ch]) |
317 | cylinder(d1=gearbox_d,d2=gearbox_d-2*ch,h=ch,$fn=PI*gearbox_d*2); | 355 | cylinder(d1=gearbox_d,d2=gearbox_d-2*ch,h=ch,$fn=PI*gearbox_d*2); |
318 | } | 356 | } |
319 | for(a=[0:360/knob_indents:359]) rotate([0,0,a]) | 357 | for(a=[0:360/knob_indents:359]) rotate([0,0,a]) |
320 | translate([0,gearbox_d/2,-1]) | 358 | translate([0,gearbox_d/2,-1]) |
321 | cylinder(d=knob_indent_d,h=knob_h+2,$fn=knob_indent_d*PI*2); | 359 | cylinder(d=knob_indent_d,h=knob_h+2,$fn=knob_indent_d*PI*2); |
322 | } | 360 | } |
323 | } | 361 | } |
324 | }//knob module | 362 | }//knob module |
325 | 363 | ||
326 | mirrorleft() | 364 | mirrorleft() |
327 | if(what=="lever") color("green",0.7) lever(); | 365 | if(what=="lever") color("green",0.7) lever(); |
328 | else if(what=="body") color("yellow",0.7) body(); | 366 | else if(what=="body") color("yellow",0.7) body(); |
329 | else if(what=="knob") color("red",0.7) knob(); | 367 | else if(what=="knob") color("red",0.7) knob(); |
330 | else if(what=="both" || what=="*") { | 368 | else if(what=="springpad") color("blue",0.7) springpad(); |
369 | else if(what=="both") { | ||
370 | color("green",0.7) lever(); | ||
371 | color("yellow",0.7) body(); | ||
372 | }else{ | ||
331 | color("green",0.7) lever(); | 373 | color("green",0.7) lever(); |
332 | color("yellow",0.7) body(); | 374 | color("yellow",0.7) body(); |
333 | color("red",0.7) knob(); | 375 | color("red",0.7) knob(); |
376 | color("blue",0.7) springpad(); | ||
334 | } | 377 | } |
335 | } | 378 | } |
336 | 379 | ||
337 | the_extruder(what="both",left=false); | 380 | the_extruder(what="both",left=false); |