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authorMichael Krelin <hacker@klever.net>2018-09-06 21:52:50 (UTC)
committer Michael Krelin <hacker@klever.net>2018-09-06 21:52:50 (UTC)
commit76dd6dc594580d573a8d2ec566944c20cd7019af (patch) (unidiff)
treeee9ce3964f4103eb14fc07c51189241ba8afe391
parent1409beae6cdd6520ef037b0d2a083844ce0e0c47 (diff)
downloadextrudery-76dd6dc594580d573a8d2ec566944c20cd7019af.zip
extrudery-76dd6dc594580d573a8d2ec566944c20cd7019af.tar.gz
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adjust spring tensioner hand cutout
Diffstat (more/less context) (show whitespace changes)
-rw-r--r--another.scad4
1 files changed, 2 insertions, 2 deletions
diff --git a/another.scad b/another.scad
index 83a4e43..4842e1b 100644
--- a/another.scad
+++ b/another.scad
@@ -316,98 +316,98 @@ module the_extruder(
316 rotate_extrude(angle=90,$fn=fnr*(shortwing+(idler_d+idler_clearance)/2)) 316 rotate_extrude(angle=90,$fn=fnr*(shortwing+(idler_d+idler_clearance)/2))
317 square([shortwing+(idler_d+idler_clearance)/2,ls_h]); 317 square([shortwing+(idler_d+idler_clearance)/2,ls_h]);
318 // idler itself 318 // idler itself
319 place_idler() 319 place_idler()
320 cylinder(d=idler_d+idler_clearance,h=ls_h,$fn=fnd*(idler_d+idler_clearance)); 320 cylinder(d=idler_d+idler_clearance,h=ls_h,$fn=fnd*(idler_d+idler_clearance));
321 // lever space 321 // lever space
322 rotate([0,0,45]) 322 rotate([0,0,45])
323 rotate_extrude(angle=-135+max(atan(2*fsw/gearbox_d-1),atan(gearbox_d/mount_d-1))) 323 rotate_extrude(angle=-135+max(atan(2*fsw/gearbox_d-1),atan(gearbox_d/mount_d-1)))
324 square([gearbox_d/2+1,ls_h]); 324 square([gearbox_d/2+1,ls_h]);
325 } 325 }
326 326
327 // back side cutout 327 // back side cutout
328 // XXX: this is somewhat ugly and potentially bugged, 328 // XXX: this is somewhat ugly and potentially bugged,
329 // but I want to sleep. 329 // but I want to sleep.
330 a0_ = atan( 330 a0_ = atan(
331 (pf_offset+pf_h(pf)+gearbox_d/2) 331 (pf_offset+pf_h(pf)+gearbox_d/2)
332 / 332 /
333 ( 333 (
334 pulley_d/2+filament_offset- 334 pulley_d/2+filament_offset-
335 (pf_d(pf)+2*pf_shell)/2/cos(30) 335 (pf_d(pf)+2*pf_shell)/2/cos(30)
336 ) 336 )
337 ); 337 );
338 a0 = -135 + ( (a0_>0) ? a0_ : 180+a0_ ); 338 a0 = -135 + ( (a0_>0) ? a0_ : 180+a0_ );
339 a1 = atan((longwing-lever_thickness/2)/(gearbox_d/2)); 339 a1 = atan((longwing-lever_thickness/2)/(gearbox_d/2));
340 translate([0,0,ls_z]) difference() { 340 translate([0,0,ls_z]) difference() {
341 rotate([0,0,-180+a0]) 341 rotate([0,0,-180+a0])
342 rotate_extrude(angle=a1-a0) 342 rotate_extrude(angle=a1-a0)
343 translate([0,-ls_h/2]) 343 translate([0,-ls_h/2])
344 square([sqrt(pow(gearbox_d/2,2)+pow(longwing-lever_thickness/2,2))+1, 344 square([sqrt(pow(gearbox_d/2,2)+pow(longwing-lever_thickness/2,2))+1,
345 ls_h]); 345 ls_h]);
346 translate([-mount_d/2,0,0]) 346 translate([-mount_d/2,0,0])
347 cylinder(d=gearbox_d-mount_d,h=ls_h+2,center=true,$fn=fnd*(gearbox_d-mount_d)); 347 cylinder(d=gearbox_d-mount_d,h=ls_h+2,center=true,$fn=fnd*(gearbox_d-mount_d));
348 }//difference translate 348 }//difference translate
349 349
350 // spring tensioner 350 // spring tensioner
351 translate([-gearbox_d/2,-longwing,ls_z]) rotate([0,-90,0]) { 351 translate([-gearbox_d/2,-longwing,ls_z]) rotate([0,-90,0]) {
352 mirror([0,0,1]) { 352 mirror([0,0,1]) {
353 translate([0,0,st_thickshell]) 353 translate([0,0,st_thickshell])
354 hull() for(o=[0,spring_d]) translate([0,-o,0]) 354 hull() for(o=[0,spring_d]) translate([0,-o,0])
355 rotate([0,0,30]) 355 rotate([0,0,30])
356 cylinder(d=st_nut_d+st_nut_d_tolerance,h=st_nut_h+st_nut_h_tolerance,$fn=6); 356 cylinder(d=st_nut_d+st_nut_d_tolerance,h=st_nut_h+st_nut_h_tolerance,$fn=6);
357 translate([0,0,-1]) cylinder(d=st_screw_d+st_screw_d_tolerance,h=fsw+2,$fn=fnd*(st_screw_d+st_screw_d_tolerance)); 357 translate([0,0,-1]) cylinder(d=st_screw_d+st_screw_d_tolerance,h=fsw+2,$fn=fnd*(st_screw_d+st_screw_d_tolerance));
358 bigd = spring_d+spring_d_clearance; 358 bigd = spring_d+spring_d_clearance;
359 hf = (bigd-st_screw_d-st_screw_d_tolerance)/2; 359 hf = (bigd-st_screw_d-st_screw_d_tolerance)/2;
360 translate([0,0,st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell-epsilon]) { 360 translate([0,0,st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell-epsilon]) {
361 cylinder(d1=st_screw_d+st_screw_d_tolerance,d2=bigd, 361 cylinder(d1=st_screw_d+st_screw_d_tolerance,d2=bigd,
362 h=hf+epsilon, $fn=fnd*bigd); 362 h=hf+epsilon, $fn=fnd*bigd);
363 translate([0,-(st_split_w+st_split_w_tolerance)/2,0]) hull() { 363 translate([0,-(st_split_w+st_split_w_tolerance)/2,0]) hull() {
364 cube(size=[body_h-ls_z-sp_ch-st_split_w_tolerance,st_split_w+st_split_w_tolerance,fsw+1]); 364 cube(size=[body_h-ls_z-st_w+st_split_w_tolerance,st_split_w+st_split_w_tolerance,fsw+1]);
365 translate([0,0,sp_ch+st_split_w_tolerance+1]) 365 translate([0,0,st_w+1])
366 cube(size=[body_h-ls_z+1,st_split_w+st_split_w_tolerance,fsw+1]); 366 cube(size=[body_h-ls_z+1,st_split_w+st_split_w_tolerance,fsw+1]);
367 } 367 }
368 }//translate 368 }//translate
369 translate([0,0,st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell+hf-epsilon]) 369 translate([0,0,st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell+hf-epsilon])
370 cylinder(d=bigd,h=fsw+1,$fn=fnd*bigd); 370 cylinder(d=bigd,h=fsw+1,$fn=fnd*bigd);
371 }//mirror 371 }//mirror
372 }//translate 372 }//translate
373 373
374 // label 374 // label
375 body_label(); 375 body_label();
376 // scale 376 // scale
377 body_scale(); 377 body_scale();
378 378
379 }//difference 379 }//difference
380 380
381 }//body module 381 }//body module
382 module body_scale() { 382 module body_scale() {
383 scale_thickness = 2*layer_height; 383 scale_thickness = 2*layer_height;
384 nscales = 5; 384 nscales = 5;
385 x1 = -gearbox_d/2+fsw-st_h+st_w+st_bump*2-st_bump_tip/2; 385 x1 = -gearbox_d/2+fsw-st_h+st_w+st_bump*2-st_bump_tip/2;
386 x0 = -gearbox_d/2+st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell+st_split_w+st_split_w_tolerance+st_bump_tip/2; 386 x0 = -gearbox_d/2+st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell+st_split_w+st_split_w_tolerance+st_bump_tip/2;
387 w0 = st_split_w+st_split_w_tolerance+2*(extrusion_width+2*extrusion_width); 387 w0 = st_split_w+st_split_w_tolerance+2*(extrusion_width+2*extrusion_width);
388 w1 = 2*(longwing-gearbox_d/2-extrusion_width); 388 w1 = 2*(longwing-gearbox_d/2-extrusion_width);
389 translate([0,-longwing,body_h-scale_thickness]) 389 translate([0,-longwing,body_h-scale_thickness])
390 difference() { 390 difference() {
391 for(x=[x0:(x1-x0)/(nscales-1):x1]) let(w=w0+(w1-w0)*(x-x0)/(x1-x0)) 391 for(x=[x0:(x1-x0)/(nscales-1):x1]) let(w=w0+(w1-w0)*(x-x0)/(x1-x0))
392 translate([x-st_bump_tip/2,-w/2,0]) 392 translate([x-st_bump_tip/2,-w/2,0])
393 cube(size=[st_bump_tip,w,scale_thickness+epsilon]); 393 cube(size=[st_bump_tip,w,scale_thickness+epsilon]);
394 let(w=st_split_w+st_split_w_tolerance+extrusion_width) 394 let(w=st_split_w+st_split_w_tolerance+extrusion_width)
395 translate([-gearbox_d/2,-w/2,-1]) 395 translate([-gearbox_d/2,-w/2,-1])
396 cube(size=[fsw,w,scale_thickness+2]); 396 cube(size=[fsw,w,scale_thickness+2]);
397 } 397 }
398 } 398 }
399 module body_label() { 399 module body_label() {
400 if(body_label) { 400 if(body_label) {
401 label=body_label; 401 label=body_label;
402 label_thickness=body_label_thickness; 402 label_thickness=body_label_thickness;
403 label_len = len(label); 403 label_len = len(label);
404 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]; 404 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];
405 translate([0,0,body_h-label_thickness]) 405 translate([0,0,body_h-label_thickness])
406 linear_extrude(height=label_thickness+epsilon,convexity=64) 406 linear_extrude(height=label_thickness+epsilon,convexity=64)
407 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]) 407 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])
408 mirror([left?0:1,0]) 408 mirror([left?0:1,0])
409 text(text=label,size=labelspace.x/label_len,halign="center",valign="center",font="Arial Black"); 409 text(text=label,size=labelspace.x/label_len,halign="center",valign="center",font="Arial Black");
410 }else sphere(d=epsilon); // to avoid makefile breakage 410 }else sphere(d=epsilon); // to avoid makefile breakage
411 } 411 }
412 412
413 st_bump = 4*extrusion_width; 413 st_bump = 4*extrusion_width;