author | Michael Krelin <hacker@klever.net> | 2018-08-12 00:07:46 (UTC) |
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committer | Michael Krelin <hacker@klever.net> | 2018-08-12 00:07:46 (UTC) |
commit | 60f188ff063a4c6f7e5d4a1078fd520a84f829c4 (patch) (unidiff) | |
tree | 0736488044c3c37394d7a2916ad5d7c4eabcc3c2 | |
parent | e3574275ad904b8ec1b188ee91d0023ea9974cb8 (diff) | |
download | extrudery-60f188ff063a4c6f7e5d4a1078fd520a84f829c4.zip extrudery-60f188ff063a4c6f7e5d4a1078fd520a84f829c4.tar.gz extrudery-60f188ff063a4c6f7e5d4a1078fd520a84f829c4.tar.bz2 |
another: potentially even prettier pushfit arrangement
-rw-r--r-- | another.scad | 39 |
1 files changed, 26 insertions, 13 deletions
diff --git a/another.scad b/another.scad index 6af68b6..4c4af5c 100644 --- a/another.scad +++ b/another.scad | |||
@@ -31,32 +31,33 @@ module the_extruder( | |||
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 | 34 | // spring tensioner |
35 | st_nut_d = 9, st_nut_h = 4, | 35 | st_nut_d = 9, st_nut_h = 4, |
36 | st_screw_d = 5, | 36 | st_screw_d = 5, |
37 | st_thickshell = 8*extrusion_width, st_thinshell = 4*extrusion_width, | 37 | st_thickshell = 8*extrusion_width, st_thinshell = 4*extrusion_width, |
38 | 38 | ||
39 | // screw it | 39 | // screw it |
40 | mount_screw_d = 3.1, mount_screw_l = 20, | 40 | mount_screw_d = 3.1, mount_screw_l = 20, |
41 | mount_screwhead_d=6, mount_screwhead_h=3, | 41 | mount_screwhead_d=6, mount_screwhead_h=3, |
42 | idler_screw_d = 3, | 42 | idler_screw_d = 3, |
43 | idler_screwhead_d=6, idler_screwhead_h=3, | 43 | idler_screwhead_d=6, idler_screwhead_h=3, |
44 | 44 | ||
45 | pf = pushfit_embeddest, | 45 | pf = pushfit_embeddest, |
46 | pf_shell = max(3*layer_height,3*extrusion_width), | 46 | pf_shell = max(3*layer_height,3*extrusion_width), |
47 | pf_smooth = true, | ||
47 | 48 | ||
48 | // empty spaces | 49 | // empty spaces |
49 | idler_travel = 3, // how far should idler travel when pressed | 50 | idler_travel = 3, // how far should idler travel when pressed |
50 | idler_clearance=1, | 51 | idler_clearance=1, |
51 | pulley_clearance=2, | 52 | pulley_clearance=2, |
52 | lever_v_clearance=.7, // vertical clearance for the lever | 53 | lever_v_clearance=.7, // vertical clearance for the lever |
53 | spring_d_clearance=1, | 54 | spring_d_clearance=1, |
54 | protrusion_tolerance_h=.5, // horizontal tolerance for the motor protrusion | 55 | protrusion_tolerance_h=.5, // horizontal tolerance for the motor protrusion |
55 | protrusion_tolerance_v=.5, // vertical tolerance for the motor protrusion | 56 | protrusion_tolerance_v=.5, // vertical tolerance for the motor protrusion |
56 | mount_screw_d_tolerance=.4, | 57 | mount_screw_d_tolerance=.4, |
57 | idler_v_tolerance=.5, | 58 | idler_v_tolerance=.5, |
58 | knob_bore_d_tolerance=.6, | 59 | knob_bore_d_tolerance=.6, |
59 | st_nut_h_tolerance=.2, | 60 | st_nut_h_tolerance=.2, |
60 | st_nut_d_tolerance=.2,/* TODO: make it st_nut_w_tolerance */ | 61 | st_nut_d_tolerance=.2,/* TODO: make it st_nut_w_tolerance */ |
61 | st_screw_d_tolerance=.3, | 62 | st_screw_d_tolerance=.3, |
62 | 63 | ||
@@ -235,46 +236,58 @@ module the_extruder( | |||
235 | hf = (bigd-st_screw_d-st_screw_d_tolerance)/2; | 236 | hf = (bigd-st_screw_d-st_screw_d_tolerance)/2; |
236 | translate([0,0,st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell-epsilon]) | 237 | translate([0,0,st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell-epsilon]) |
237 | cylinder(d1=st_screw_d+st_screw_d_tolerance,d2=bigd, | 238 | cylinder(d1=st_screw_d+st_screw_d_tolerance,d2=bigd, |
238 | h=hf+epsilon, $fn=fnd*bigd); | 239 | h=hf+epsilon, $fn=fnd*bigd); |
239 | translate([0,0,st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell+hf-epsilon]) | 240 | translate([0,0,st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell+hf-epsilon]) |
240 | cylinder(d=bigd,h=fsw+1,$fn=fnd*bigd); | 241 | cylinder(d=bigd,h=fsw+1,$fn=fnd*bigd); |
241 | } | 242 | } |
242 | } | 243 | } |
243 | } | 244 | } |
244 | } // translate | 245 | } // translate |
245 | 246 | ||
246 | // pushfit bracket | 247 | // pushfit bracket |
247 | translate([0,0,filament_elevation]) | 248 | translate([0,0,filament_elevation]) |
248 | rotate([0,0,45]) translate([pulley_d/2,0,0]) | 249 | rotate([0,0,45]) translate([pulley_d/2,0,0]) |
249 | rotate([-90,0,0]) | 250 | rotate([-90,0,0]) |
250 | translate([0,0,mount_d/sqrt(2)/2+mount_screw_d-gearbox_d/2/*TODO:*/]) { | 251 | translate([0,0,mount_d/sqrt(2)/2+mount_screw_d-gearbox_d/2/*TODO:*/]) { |
251 | pfb2a = pf_d(pf)+2*pf_shell; pfba = pfb2a/2; | 252 | pfbl = pf_h(pf)+gearbox_d/2; //TODO: |
252 | pfbd = pfb2a/cos(30); | 253 | if(pf_smooth) { |
253 | pfbs = pfb2a*tan(30); | 254 | pfbd = pf_d(pf)+2*pf_shell; |
254 | pfbl = pf_h(pf)+gearbox_d/2/*TODO:*/; | ||
255 | cylinder(d=pfbd,h=pfbl,$fn=6); | ||
256 | translate([-pfbs/2,0,0]) { | ||
257 | hull() { | 255 | hull() { |
258 | translate([0,-pfba,0]) cube(size=[pfbs,pfb2a,pfbl]); | 256 | cylinder(d=pfbd,h=pfbl,$fn=pfbd*fnd); |
259 | cube(size=[pfbs,filament_elevation,pfbl-filament_elevation+pfba]); | 257 | translate([-epsilon/2,0,0]) { |
260 | mirror([0,1,0]) | 258 | cube(size=[epsilon,filament_elevation,pfbl-filament_elevation+pfbd/2]); |
261 | cube(size=[pfbs,body_h-filament_elevation,pfbl-body_h+filament_elevation+pfba]); | 259 | mirror([0,1,0]) |
262 | } | 260 | cube(size=[epsilon,body_h-filament_elevation,pfbl-body_h+filament_elevation+pfbd/2]); |
263 | } | 261 | }//translate |
264 | } | 262 | }//hull |
263 | }else{ | ||
264 | pfb2a = pf_d(pf)+2*pf_shell; pfba = pfb2a/2; | ||
265 | pfbd = pfb2a/cos(30); | ||
266 | pfbs = pfb2a*tan(30); | ||
267 | cylinder(d=pfbd,h=pfbl,$fn=6); | ||
268 | translate([-pfbs/2,0,0]) { | ||
269 | hull() { | ||
270 | translate([0,-pfba,0]) cube(size=[pfbs,pfb2a,pfbl]); | ||
271 | cube(size=[pfbs,filament_elevation,pfbl-filament_elevation+pfba]); | ||
272 | mirror([0,1,0]) | ||
273 | cube(size=[pfbs,body_h-filament_elevation,pfbl-body_h+filament_elevation+pfba]); | ||
274 | }//hull | ||
275 | }//translate*/ | ||
276 | }//if(pf_smooth) | ||
277 | }//translate rotate translate rotate translate | ||
265 | }//union (first child of difference) | 278 | }//union (first child of difference) |
266 | 279 | ||
267 | // protrusion | 280 | // protrusion |
268 | translate([0,0,-1]) | 281 | translate([0,0,-1]) |
269 | cylinder(d=protrusion_d+protrusion_tolerance_h,h=protrusion_h+protrusion_tolerance_v+1,$fn=fnd*(protrusion_d+protrusion_tolerance_h)); | 282 | cylinder(d=protrusion_d+protrusion_tolerance_h,h=protrusion_h+protrusion_tolerance_v+1,$fn=fnd*(protrusion_d+protrusion_tolerance_h)); |
270 | // mount screw holes | 283 | // mount screw holes |
271 | for(zr=[0:90:359]) rotate([0,0,zr]) translate([mount_d/2,0,0]) { | 284 | for(zr=[0:90:359]) rotate([0,0,zr]) translate([mount_d/2,0,0]) { |
272 | translate([0,0,mount_screw_l-mounthole_depth/2-(bridges?layer_height:-epsilon)]) | 285 | translate([0,0,mount_screw_l-mounthole_depth/2-(bridges?layer_height:-epsilon)]) |
273 | mirror([0,0,1]) | 286 | mirror([0,0,1]) |
274 | cylinder(d=mount_screw_d+mount_screw_d_tolerance, | 287 | cylinder(d=mount_screw_d+mount_screw_d_tolerance, |
275 | h=mount_screw_l-mounthole_depth/2+1, | 288 | h=mount_screw_l-mounthole_depth/2+1, |
276 | $fn=fnd*(mount_screw_d+mount_screw_d_tolerance)); | 289 | $fn=fnd*(mount_screw_d+mount_screw_d_tolerance)); |
277 | translate([0,0,mount_screw_l-mounthole_depth/2]) | 290 | translate([0,0,mount_screw_l-mounthole_depth/2]) |
278 | cylinder(d=mount_screwhead_d,h=body_h+1,$fn=fnd*mount_screwhead_d); | 291 | cylinder(d=mount_screwhead_d,h=body_h+1,$fn=fnd*mount_screwhead_d); |
279 | }//for | 292 | }//for |
280 | // pushfit | 293 | // pushfit |