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-rw-r--r--another.scad29
1 files changed, 16 insertions, 13 deletions
diff --git a/another.scad b/another.scad
index 297c1fc..ed18874 100644
--- a/another.scad
+++ b/another.scad
@@ -24,32 +24,33 @@ module the_extruder(
24 idler_d = 9.5, idler_h = 4, idler_id = 3,// idler dimensions: outer and inner diameters and height 24 idler_d = 9.5, idler_h = 4, idler_id = 3,// idler dimensions: outer and inner diameters and height
25 // spring properties 25 // spring properties
26 spring_d = 10, spring_lc = 9.6, // spring diameter and compressed length 26 spring_d = 10, spring_lc = 9.6, // spring diameter and compressed length
27 // filament path properties 27 // filament path properties
28 filament_d = 1.75, 28 filament_d = 1.75,
29 filament_path_d = 2, 29 filament_path_d = 2,
30 filament_guide_d = 4, // PTFE filament guide diameter 30 filament_guide_d = 4, // PTFE filament guide diameter
31 // knob properties 31 // knob properties
32 knob_h = 10, 32 knob_h = 10,
33 knob_bore_l = 4, 33 knob_bore_l = 4,
34 knob_indent_d = 4, 34 knob_indent_d = 4,
35 knob_indents = 12, 35 knob_indents = 12,
36 // spring tensioner 36 // spring tensioner
37 st_nut_d = 9, st_nut_h = 4, 37 st_nut_d = 9, st_nut_h = 4,
38 st_screw_d = 5, 38 st_screw_d = 5,
39 st_thickshell = 8*extrusion_width, st_thinshell = 2*extrusion_width, 39 st_thickshell = 8*extrusion_width, st_thinshell = 2*extrusion_width,
40 st_split_w = 4*extrusion_width,
40 41
41 // screw it 42 // screw it
42 mount_screw_d = 3.1, mount_screw_l = 20, 43 mount_screw_d = 3.1, mount_screw_l = 20,
43 mount_screwhead_d=6, mount_screwhead_h=3, 44 mount_screwhead_d=6, mount_screwhead_h=3,
44 idler_screw_d = 3, 45 idler_screw_d = 3,
45 idler_screwhead_d=6, idler_screwhead_h=3, 46 idler_screwhead_d=6, idler_screwhead_h=3,
46 47
47 pf = pushfit_embeddest, 48 pf = pushfit_embeddest,
48 pf_shell = max(3*layer_height,3*extrusion_width), 49 pf_shell = max(3*layer_height,3*extrusion_width),
49 pf_smooth = true, 50 pf_smooth = true,
50 51
51 // empty spaces 52 // empty spaces
52 idler_travel = 3, // how far should idler travel when pressed 53 idler_travel = 3, // how far should idler travel when pressed
53 idler_clearance=1, 54 idler_clearance=1,
54 pulley_d_clearance=2, 55 pulley_d_clearance=2,
55 pulley_small_d_clearance=0.5, 56 pulley_small_d_clearance=0.5,
@@ -224,33 +225,33 @@ module the_extruder(
224 mirror([0,0,1]) 225 mirror([0,0,1])
225 cylinder(d=mount_screwhead_d,h=layer_height); 226 cylinder(d=mount_screwhead_d,h=layer_height);
226 }//translate 227 }//translate
227 }//lever module 228 }//lever module
228 229
229 module body() { 230 module body() {
230 difference() { 231 difference() {
231 union() { 232 union() {
232 cylinder(d=gearbox_d,h=body_h,$fn=fnd*gearbox_d); 233 cylinder(d=gearbox_d,h=body_h,$fn=fnd*gearbox_d);
233 // spring tensioner part 234 // spring tensioner part
234 translate([-gearbox_d/2,0,0]) hull() { 235 translate([-gearbox_d/2,0,0]) hull() {
235 translate([0,-longwing,ls_z]) 236 translate([0,-longwing,ls_z])
236 rotate([0,90,0]) 237 rotate([0,90,0])
237 cylinder(d=lever_thickness,h=fsw,$fn=fnd*lever_thickness); 238 cylinder(d=lever_thickness,h=fsw,$fn=fnd*lever_thickness);
238 hh=body_h-ls_z; 239 hh=body_h-ls_z;
239 translate([0,0,ls_z]) 240 translate([0,0,ls_z])
240 mirror([0,1,0]) cube(size=[fsw,longwing+(st_thinshell+st_split_w_tolerance)/2+st_thickshell,body_h-ls_z]); 241 mirror([0,1,0]) cube(size=[fsw,longwing+(st_split_w+st_split_w_tolerance)/2+st_thickshell,body_h-ls_z]);
241 hhh=ls_z; 242 hhh=ls_z;
242 translate([0,0,0]) 243 translate([0,0,0])
243 mirror([0,1,0]) cube(size=[fsw,longwing-hhh+lever_thickness/sqrt(2),hhh+lever_thickness/2]); 244 mirror([0,1,0]) cube(size=[fsw,longwing-hhh+lever_thickness/sqrt(2),hhh+lever_thickness/2]);
244 }//hull translate 245 }//hull translate
245 246
246 // pushfit bracket 247 // pushfit bracket
247 translate([0,0,filament_elevation]) 248 translate([0,0,filament_elevation])
248 rotate([0,0,45]) translate([pulley_d/2+filament_offset,0,0]) 249 rotate([0,0,45]) translate([pulley_d/2+filament_offset,0,0])
249 rotate([-90,0,0]) 250 rotate([-90,0,0])
250 translate([0,0,mount_d/sqrt(2)/2+mount_screw_d-gearbox_d/2/*TODO:*/]) { 251 translate([0,0,mount_d/sqrt(2)/2+mount_screw_d-gearbox_d/2/*TODO:*/]) {
251 pfbl = pf_h(pf)+gearbox_d/2; //TODO: 252 pfbl = pf_h(pf)+gearbox_d/2; //TODO:
252 if(pf_smooth) { 253 if(pf_smooth) {
253 pfbd = pf_d(pf)+2*pf_shell; 254 pfbd = pf_d(pf)+2*pf_shell;
254 hull() { 255 hull() {
255 cylinder(d=pfbd,h=pfbl,$fn=pfbd*fnd); 256 cylinder(d=pfbd,h=pfbl,$fn=pfbd*fnd);
256 translate([-epsilon/2,0,0]) { 257 translate([-epsilon/2,0,0]) {
@@ -348,73 +349,75 @@ module the_extruder(
348 cylinder(d=gearbox_d-mount_d,h=ls_h+2,center=true,$fn=fnd*(gearbox_d-mount_d)); 349 cylinder(d=gearbox_d-mount_d,h=ls_h+2,center=true,$fn=fnd*(gearbox_d-mount_d));
349 }//difference translate 350 }//difference translate
350 351
351 // spring tensioner 352 // spring tensioner
352 translate([-gearbox_d/2,-longwing,ls_z]) rotate([0,-90,0]) { 353 translate([-gearbox_d/2,-longwing,ls_z]) rotate([0,-90,0]) {
353 mirror([0,0,1]) { 354 mirror([0,0,1]) {
354 translate([0,0,st_thickshell]) 355 translate([0,0,st_thickshell])
355 hull() for(o=[0,spring_d]) translate([0,-o,0]) 356 hull() for(o=[0,spring_d]) translate([0,-o,0])
356 rotate([0,0,30]) 357 rotate([0,0,30])
357 cylinder(d=st_nut_d+st_nut_d_tolerance,h=st_nut_h+st_nut_h_tolerance,$fn=6); 358 cylinder(d=st_nut_d+st_nut_d_tolerance,h=st_nut_h+st_nut_h_tolerance,$fn=6);
358 translate([0,0,-1]) cylinder(d=st_screw_d+st_screw_d_tolerance,h=fsw+2,$fn=fnd*(st_screw_d+st_screw_d_tolerance)); 359 translate([0,0,-1]) cylinder(d=st_screw_d+st_screw_d_tolerance,h=fsw+2,$fn=fnd*(st_screw_d+st_screw_d_tolerance));
359 bigd = spring_d+spring_d_clearance; 360 bigd = spring_d+spring_d_clearance;
360 hf = (bigd-st_screw_d-st_screw_d_tolerance)/2; 361 hf = (bigd-st_screw_d-st_screw_d_tolerance)/2;
361 translate([0,0,st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell-epsilon]) { 362 translate([0,0,st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell-epsilon]) {
362 cylinder(d1=st_screw_d+st_screw_d_tolerance,d2=bigd, 363 cylinder(d1=st_screw_d+st_screw_d_tolerance,d2=bigd,
363 h=hf+epsilon, $fn=fnd*bigd); 364 h=hf+epsilon, $fn=fnd*bigd);
364 translate([0,-(st_thinshell+st_split_w_tolerance)/2,0]) 365 translate([0,-(st_split_w+st_split_w_tolerance)/2,0])
365 cube(size=[body_h-ls_z+1,st_thinshell+st_split_w_tolerance,fsw+1]); 366 cube(size=[body_h-ls_z+1,st_split_w+st_split_w_tolerance,fsw+1]);
366 }//translate 367 }//translate
367 translate([0,0,st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell+hf-epsilon]) 368 translate([0,0,st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell+hf-epsilon])
368 cylinder(d=bigd,h=fsw+1,$fn=fnd*bigd); 369 cylinder(d=bigd,h=fsw+1,$fn=fnd*bigd);
369 }//mirror 370 }//mirror
370 }//translate 371 }//translate
371 372
372 // label 373 // label
373 label_thickness = 2*layer_height; 374 label_thickness = 2*layer_height;
374 label_len = len(label); 375 label_len = len(label);
375 labelspace = [gearbox_d/2-mount_screwhead_d/2-min_xy_shell,longwing-(mount_screwhead_d-st_thinshell-st_split_w_tolerance)/2-2*min_xy_shell-mount_d/2]; 376 if(label_len) {
376 translate([0,0,body_h-label_thickness]) 377 labelspace = [gearbox_d/2-mount_screwhead_d/2-min_xy_shell,longwing-(mount_screwhead_d-st_split_w-st_split_w_tolerance)/2-2*min_xy_shell];
377 linear_extrude(height=label_thickness+epsilon,convexity=64) 378 translate([0,0,body_h-label_thickness])
378 translate([-mount_screwhead_d/2-min_xy_shell-labelspace.x/2,-longwing+(st_thinshell+st_split_w_tolerance)/2+min_xy_shell+labelspace.y/2]) 379 linear_extrude(height=label_thickness+epsilon,convexity=64)
379 mirror([left?0:1,0]) 380 translate([-mount_screwhead_d/2-min_xy_shell-labelspace.x/2,-longwing+(st_split_w+st_split_w_tolerance)/2+min_xy_shell+labelspace.y/2])
380 text(text=label,size=labelspace.x/label_len,halign="center",valign="center",font="Arial Black"); 381 mirror([left?0:1,0])
382 text(text=label,size=labelspace.x/label_len,halign="center",valign="center",font="Arial Black");
383 }//if(label_len)
381 384
382 }//difference 385 }//difference
383 386
384 }//body module 387 }//body module
385 388
386 module springpad() { 389 module springpad() {
387 smalld=st_screw_d+st_screw_d_tolerance+min_xy_shell; 390 smalld=st_screw_d+st_screw_d_tolerance+min_xy_shell;
388 bigd = spring_d+spring_d_clearance/2; 391 bigd = spring_d+spring_d_clearance/2;
389 hf = (bigd-smalld)/2; 392 hf = (bigd-smalld)/2;
390 h = hf*3.5; 393 h = hf*3.5;
391 translate([-gearbox_d/2+st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell+1,-longwing,filament_elevation]) 394 translate([-gearbox_d/2+st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell+1,-longwing,filament_elevation])
392 rotate([0,90,0]) difference() { 395 rotate([0,90,0]) difference() {
393 union() { 396 union() {
394 cylinder(d1=smalld,d2=bigd,h=hf,$fn=fnd*bigd); 397 cylinder(d1=smalld,d2=bigd,h=hf,$fn=fnd*bigd);
395 translate([0,0,hf-epsilon]) 398 translate([0,0,hf-epsilon])
396 cylinder(d=bigd,h=h-hf,$fn=fnd*bigd); 399 cylinder(d=bigd,h=h-hf,$fn=fnd*bigd);
397 translate([0,0,h]) 400 translate([0,0,h])
398 sphere(d=spring_d*3/4,$fn=fnd*spring_d*3/4); 401 sphere(d=spring_d*3/4,$fn=fnd*spring_d*3/4);
399 l = body_h-ls_z; 402 l = body_h-ls_z;
400 w = st_thinshell; 403 w = st_split_w;
401 hull() translate([0,-st_thinshell/2,0]) mirror([1,0,0]) { 404 hull() translate([0,-st_split_w/2,0]) mirror([1,0,0]) {
402 translate([0,0,w]) 405 translate([0,0,w])
403 cube(size=[l,st_thinshell,w]); 406 cube(size=[l,st_split_w,w]);
404 cube(size=[l-w,st_thinshell,2*w]); 407 cube(size=[l-w,st_split_w,2*w]);
405 } 408 }
406 } 409 }
407 translate([0,0,-epsilon]) 410 translate([0,0,-epsilon])
408 cylinder(d=st_screw_d+st_screw_d_tolerance,h=2*hf+epsilon,$fn=fnd*(st_screw_d+st_screw_d_tolerance)); 411 cylinder(d=st_screw_d+st_screw_d_tolerance,h=2*hf+epsilon,$fn=fnd*(st_screw_d+st_screw_d_tolerance));
409 } 412 }
410 } 413 }
411 414
412 module knob() { 415 module knob() {
413 ch = knob_indent_d/2; 416 ch = knob_indent_d/2;
414 translate([0,0,body_h+epsilon]) { 417 translate([0,0,body_h+epsilon]) {
415 mirror([0,0,1]) translate([0,0,-epsilon]) { 418 mirror([0,0,1]) translate([0,0,-epsilon]) {
416 difference() { 419 difference() {
417 cylinder(d=pulley_d,h=knob_bore_l,$fn=fnd*pulley_d); 420 cylinder(d=pulley_d,h=knob_bore_l,$fn=fnd*pulley_d);
418 translate([0,0,-1]) difference() { 421 translate([0,0,-1]) difference() {
419 cylinder(d=bore_d+knob_bore_d_tolerance,h=knob_bore_l+2); 422 cylinder(d=bore_d+knob_bore_d_tolerance,h=knob_bore_l+2);
420 translate([-bore_d/2-1,bore_dd-bore_d/2+knob_bore_d_tolerance/2,-1]) 423 translate([-bore_d/2-1,bore_dd-bore_d/2+knob_bore_d_tolerance/2,-1])