-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 | |||
@@ -22,47 +22,53 @@ module the_extruder( | |||
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); |
@@ -188,26 +194,43 @@ module the_extruder( | |||
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); |
@@ -251,25 +274,25 @@ module the_extruder( | |||
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 |
@@ -286,24 +309,39 @@ module the_extruder( | |||
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,$fn=pulley_d*PI*2); |
304 | translate([0,0,-1]) difference() { | 342 | translate([0,0,-1]) difference() { |
305 | cylinder(d=bore_d+knob_bore_d_tolerance,h=knob_bore_l+2); | 343 | cylinder(d=bore_d+knob_bore_d_tolerance,h=knob_bore_l+2); |
306 | translate([-bore_d/2-1,bore_dd-bore_d/2+knob_bore_d_tolerance/2,-1]) | 344 | translate([-bore_d/2-1,bore_dd-bore_d/2+knob_bore_d_tolerance/2,-1]) |
307 | cube([bore_d+2,bore_d/2,knob_bore_l+4]); | 345 | cube([bore_d+2,bore_d/2,knob_bore_l+4]); |
308 | } | 346 | } |
309 | } | 347 | } |
@@ -313,25 +351,30 @@ module the_extruder( | |||
313 | cylinder(d1=gearbox_d-2*ch,d2=gearbox_d,h=ch+epsilon,$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); |