author | Michael Krelin <hacker@klever.net> | 2018-08-31 22:38:35 (UTC) |
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committer | Michael Krelin <hacker@klever.net> | 2018-08-31 22:38:35 (UTC) |
commit | aae457de5558e166564bf50ed50c53acfa6b62cd (patch) (unidiff) | |
tree | cd61a573f4755cf9cb35d9e81604370c829034bf | |
parent | 558d255a01ee6ced090290c5b7f2f9b75cec1360 (diff) | |
download | extrudery-aae457de5558e166564bf50ed50c53acfa6b62cd.zip extrudery-aae457de5558e166564bf50ed50c53acfa6b62cd.tar.gz extrudery-aae457de5558e166564bf50ed50c53acfa6b62cd.tar.bz2 |
automatically calculate knob bore length
-rw-r--r-- | another.scad | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/another.scad b/another.scad index e4d79f9..915b184 100644 --- a/another.scad +++ b/another.scad | |||
@@ -20,27 +20,27 @@ module the_extruder( | |||
20 | pulley = pulley_e3d, | 20 | pulley = pulley_e3d, |
21 | pulley_elevation = 1, // pulley elevation above the protrusion | 21 | pulley_elevation = 1, // pulley elevation above the protrusion |
22 | // idler properties | 22 | // idler properties |
23 | idler_d = 10, idler_h = 4, idler_id = 3,// idler dimensions: outer and inner diameters and height | 23 | idler_d = 10, idler_h = 4, idler_id = 3,// idler dimensions: outer and inner diameters and height |
24 | // spring properties | 24 | // spring properties |
25 | spring_d = 10, spring_lc = 9.6, // spring diameter and compressed length | 25 | spring_d = 10, spring_lc = 9.6, // spring diameter and compressed length |
26 | // filament path properties | 26 | // filament path properties |
27 | filament_d = 1.75, | 27 | filament_d = 1.75, |
28 | filament_path_d = 2, | 28 | filament_path_d = 2, |
29 | filament_guide_d = 4, // PTFE filament guide diameter | 29 | filament_guide_d = 4, // PTFE filament guide diameter |
30 | // knob properties | 30 | // knob properties |
31 | knob_h = 10, | 31 | knob_h = 10, |
32 | knob_bore_l = 4, | ||
33 | knob_indent_d = 4, | 32 | knob_indent_d = 4, |
34 | knob_indents = 12, | 33 | knob_indents = 12, |
34 | knob_v_clearance = 1, | ||
35 | // spring tensioner | 35 | // spring tensioner |
36 | st_nut_d = 9, st_nut_h = 4, | 36 | st_nut_d = 9, st_nut_h = 4, |
37 | st_screw_d = 5, | 37 | st_screw_d = 5, |
38 | st_thickshell = 8*extrusion_width, st_thinshell = 2*extrusion_width, | 38 | st_thickshell = 8*extrusion_width, st_thinshell = 2*extrusion_width, |
39 | st_split_w = 4*extrusion_width, | 39 | st_split_w = 4*extrusion_width, |
40 | 40 | ||
41 | // screw it | 41 | // screw it |
42 | mount_screw_d = 3.1, mount_screw_l = 20, | 42 | mount_screw_d = 3.1, mount_screw_l = 20, |
43 | mount_screwhead_d=6, mount_screwhead_h=3, | 43 | mount_screwhead_d=6, mount_screwhead_h=3, |
44 | idler_screw_d = 3, | 44 | idler_screw_d = 3, |
45 | idler_screwhead_d=6, idler_screwhead_h=3, | 45 | idler_screwhead_d=6, idler_screwhead_h=3, |
46 | 46 | ||
@@ -399,24 +399,25 @@ module the_extruder( | |||
399 | translate([0,0,w]) | 399 | translate([0,0,w]) |
400 | cube(size=[l,st_split_w,w]); | 400 | cube(size=[l,st_split_w,w]); |
401 | cube(size=[l-w,st_split_w,2*w]); | 401 | cube(size=[l-w,st_split_w,2*w]); |
402 | } | 402 | } |
403 | } | 403 | } |
404 | translate([0,0,-epsilon]) | 404 | translate([0,0,-epsilon]) |
405 | cylinder(d=st_screw_d+st_screw_d_tolerance,h=2*hf+epsilon,$fn=fnd*(st_screw_d+st_screw_d_tolerance)); | 405 | cylinder(d=st_screw_d+st_screw_d_tolerance,h=2*hf+epsilon,$fn=fnd*(st_screw_d+st_screw_d_tolerance)); |
406 | } | 406 | } |
407 | } | 407 | } |
408 | 408 | ||
409 | module knob() { | 409 | module knob() { |
410 | ch = knob_indent_d/2; | 410 | ch = knob_indent_d/2; |
411 | knob_bore_l = body_h-protrusion_h-pulley_elevation-pulley_h-knob_v_clearance; | ||
411 | translate([0,0,body_h+epsilon]) { | 412 | translate([0,0,body_h+epsilon]) { |
412 | mirror([0,0,1]) translate([0,0,-epsilon]) { | 413 | mirror([0,0,1]) translate([0,0,-epsilon]) { |
413 | difference() { | 414 | difference() { |
414 | cylinder(d=pulley_d,h=knob_bore_l,$fn=fnd*pulley_d); | 415 | cylinder(d=pulley_d,h=knob_bore_l,$fn=fnd*pulley_d); |
415 | translate([0,0,-1]) difference() { | 416 | translate([0,0,-1]) difference() { |
416 | cylinder(d=bore_d+knob_bore_d_tolerance,h=knob_bore_l+2); | 417 | cylinder(d=bore_d+knob_bore_d_tolerance,h=knob_bore_l+2); |
417 | translate([-bore_d/2-1,bore_dd-bore_d/2+knob_bore_d_tolerance/2,-1]) | 418 | translate([-bore_d/2-1,bore_dd-bore_d/2+knob_bore_d_tolerance/2,-1]) |
418 | cube([bore_d+2,bore_d/2,knob_bore_l+4]); | 419 | cube([bore_d+2,bore_d/2,knob_bore_l+4]); |
419 | } | 420 | } |
420 | } | 421 | } |
421 | } | 422 | } |
422 | difference() { | 423 | difference() { |