-rw-r--r-- | another.scad | 26 |
1 files changed, 1 insertions, 25 deletions
diff --git a/another.scad b/another.scad index 2331003..9ff7f6a 100644 --- a/another.scad +++ b/another.scad | |||
@@ -26,97 +26,97 @@ module the_extruder( | |||
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 = 4*extrusion_width, | 39 | st_thickshell = 8*extrusion_width, st_thinshell = 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 | ||
47 | pf = pushfit_embeddest, | 47 | pf = pushfit_embeddest, |
48 | pf_shell = max(3*layer_height,3*extrusion_width), | 48 | pf_shell = max(3*layer_height,3*extrusion_width), |
49 | pf_smooth = true, | 49 | pf_smooth = true, |
50 | 50 | ||
51 | // empty spaces | 51 | // empty spaces |
52 | idler_travel = 3, // how far should idler travel when pressed | 52 | idler_travel = 3, // how far should idler travel when pressed |
53 | idler_clearance=1, | 53 | idler_clearance=1, |
54 | pulley_d_clearance=2, | 54 | pulley_d_clearance=2, |
55 | pulley_small_d_clearance=0.5, | 55 | pulley_small_d_clearance=0.5, |
56 | lever_v_clearance=.7, // vertical clearance for the lever | 56 | lever_v_clearance=.7, // vertical clearance for the lever |
57 | spring_d_clearance=1, | 57 | spring_d_clearance=1, |
58 | protrusion_tolerance_h=.5, // horizontal tolerance for the motor protrusion | 58 | protrusion_tolerance_h=.5, // horizontal tolerance for the motor protrusion |
59 | protrusion_tolerance_v=.5, // vertical tolerance for the motor protrusion | 59 | protrusion_tolerance_v=.5, // vertical tolerance for the motor protrusion |
60 | mount_screw_d_tolerance=.4, | 60 | mount_screw_d_tolerance=.4, |
61 | idler_v_tolerance=.5, | 61 | idler_v_tolerance=.5, |
62 | knob_bore_d_tolerance=.6, | 62 | knob_bore_d_tolerance=.6, |
63 | st_nut_h_tolerance=.2, | 63 | st_nut_h_tolerance=.2, |
64 | st_nut_d_tolerance=.2,/* TODO: make it st_nut_w_tolerance */ | 64 | st_nut_d_tolerance=.2,/* TODO: make it st_nut_w_tolerance */ |
65 | st_screw_d_tolerance=.5, | 65 | st_screw_d_tolerance=.5, |
66 | st_split_w_tolerance = .3, | 66 | st_split_w_tolerance = .3, |
67 | 67 | ||
68 | min_z_shell = 4*layer_height, // the very minimal shell thickness along z-axis. | 68 | min_z_shell = 4*layer_height, // the very minimal shell thickness along z-axis. |
69 | min_xy_shell = 2*extrusion_width, | 69 | min_xy_shell = 2*extrusion_width, |
70 | 70 | ||
71 | what="lever", // lever|body|knob|springpad|* | 71 | what="lever", // lever|body|knob|springpad|* |
72 | left=false, | 72 | left=false, |
73 | vitamins = true, | 73 | vitamins = true, |
74 | supports = false, bridges = true, | 74 | bridges = true, |
75 | tensioner = true, | 75 | tensioner = true, |
76 | debug = false | 76 | debug = false |
77 | ) { | 77 | ) { |
78 | fnd = 2*PI; fnr = 2*fnd; | 78 | fnd = 2*PI; fnr = 2*fnd; |
79 | 79 | ||
80 | idler_filament_offset = filament_path_d/2; // -filament_offset; | 80 | idler_filament_offset = filament_path_d/2; // -filament_offset; |
81 | lever_shell = mount_screwhead_h+0.5; | 81 | lever_shell = mount_screwhead_h+0.5; |
82 | lever_thickness=max(spring_d+spring_d_clearance+layer_height*8,idler_h+idler_v_tolerance+2*lever_shell); | 82 | lever_thickness=max(spring_d+spring_d_clearance+layer_height*8,idler_h+idler_v_tolerance+2*lever_shell); |
83 | lsd = idler_d-idler_clearance*2; // the diameter of lever thingie | 83 | lsd = idler_d-idler_clearance*2; // the diameter of lever thingie |
84 | longwing=(mount_d+mount_screw_d+mount_screw_d_tolerance+spring_d+spring_d_clearance)/2+min_xy_shell; | 84 | longwing=(mount_d+mount_screw_d+mount_screw_d_tolerance+spring_d+spring_d_clearance)/2+min_xy_shell; |
85 | shortwing = let(a=mount_d/2,c=(pulley_d+idler_d)/2/sqrt(2)) | 85 | shortwing = let(a=mount_d/2,c=(pulley_d+idler_d)/2/sqrt(2)) |
86 | sqrt(c*c+pow(a-c,2)); | 86 | sqrt(c*c+pow(a-c,2)); |
87 | longwing_travel = idler_travel*longwing/shortwing; | 87 | longwing_travel = idler_travel*longwing/shortwing; |
88 | h_ = (pulley_d+idler_d)/(2*sqrt(2)); | 88 | h_ = (pulley_d+idler_d)/(2*sqrt(2)); |
89 | ri = sqrt( pow(h_,2) + pow(mount_d/2-h_,2) ); | 89 | ri = sqrt( pow(h_,2) + pow(mount_d/2-h_,2) ); |
90 | spring_dl = idler_travel*longwing/ri; | 90 | spring_dl = idler_travel*longwing/ri; |
91 | // finger and spring support | 91 | // finger and spring support |
92 | fsw = gearbox_d-(gearbox_d-mount_d)/2-max(spring_lc,longwing_travel+(gearbox_d-mount_d)/2); | 92 | fsw = gearbox_d-(gearbox_d-mount_d)/2-max(spring_lc,longwing_travel+(gearbox_d-mount_d)/2); |
93 | 93 | ||
94 | mount_min_depth = mounthole_min_depth ? mounthole_min_depth : mounthole_depth-1; | 94 | mount_min_depth = mounthole_min_depth ? mounthole_min_depth : mounthole_depth-1; |
95 | mount_max_depth = mounthole_max_depth ? mounthole_max_depth : mounthole_depth+1; | 95 | mount_max_depth = mounthole_max_depth ? mounthole_max_depth : mounthole_depth+1; |
96 | filament_elevation=protrusion_h+pulley_elevation+teeth_elevation; | 96 | filament_elevation=protrusion_h+pulley_elevation+teeth_elevation; |
97 | ls_z = filament_elevation; // leverspace mid-z | 97 | ls_z = filament_elevation; // leverspace mid-z |
98 | ls_h = lever_thickness+lever_v_clearance; // leverspace height | 98 | ls_h = lever_thickness+lever_v_clearance; // leverspace height |
99 | mount_depth = mount_screw_l - (ls_z+ls_h/2+min_z_shell); | 99 | mount_depth = mount_screw_l - (ls_z+ls_h/2+min_z_shell); |
100 | body_h = max(protrusion_h+bore_l,mount_screw_l-mount_depth+mount_screwhead_h+min_z_shell,ls_z*2); | 100 | body_h = max(protrusion_h+bore_l,mount_screw_l-mount_depth+mount_screwhead_h+min_z_shell,ls_z*2); |
101 | echo("mount depth",mount_depth); | 101 | echo("mount depth",mount_depth); |
102 | 102 | ||
103 | module teardrop(r,d,h,center=false,angle=45) { | 103 | module teardrop(r,d,h,center=false,angle=45) { |
104 | dd = d ? d : (2*r); | 104 | dd = d ? d : (2*r); |
105 | $fn = dd*fnd; | 105 | $fn = dd*fnd; |
106 | cylinder(d=dd,h=h,center=center); | 106 | cylinder(d=dd,h=h,center=center); |
107 | if(angle>0) translate([0,0,center?-h/2:0]) | 107 | if(angle>0) translate([0,0,center?-h/2:0]) |
108 | rotate([0,0,angle]) | 108 | rotate([0,0,angle]) |
109 | cube(size=[d/2,d/2,h]); | 109 | cube(size=[d/2,d/2,h]); |
110 | } | 110 | } |
111 | 111 | ||
112 | module mirrorleft() { | 112 | module mirrorleft() { |
113 | mirror([left?0:1,0,0]) children(); | 113 | mirror([left?0:1,0,0]) children(); |
114 | } | 114 | } |
115 | module place_idler() { | 115 | module place_idler() { |
116 | rotate([0,0,45]) | 116 | rotate([0,0,45]) |
117 | translate([(pulley_d+idler_d)/2,0,0]) | 117 | translate([(pulley_d+idler_d)/2,0,0]) |
118 | children(); | 118 | children(); |
119 | } | 119 | } |
120 | module finger_indent(d=lever_thickness,depth/*=1*/,r/*=15*/) { | 120 | module finger_indent(d=lever_thickness,depth/*=1*/,r/*=15*/) { |
121 | if(depth) { | 121 | if(depth) { |
122 | hh = (-4*pow(depth,2)+pow(d,2))/(8*depth); | 122 | hh = (-4*pow(depth,2)+pow(d,2))/(8*depth); |
@@ -153,102 +153,97 @@ module the_extruder( | |||
153 | }//rotate translate | 153 | }//rotate translate |
154 | translate([pulley_d/2+filament_offset,0,0]) rotate([-90,0,0]) { | 154 | translate([pulley_d/2+filament_offset,0,0]) rotate([-90,0,0]) { |
155 | cylinder(d=filament_d,h=gearbox_d,center=false,$fn=15); | 155 | cylinder(d=filament_d,h=gearbox_d,center=false,$fn=15); |
156 | translate([0,0,mount_d/sqrt(2)/2+mount_screw_d]) | 156 | translate([0,0,mount_d/sqrt(2)/2+mount_screw_d]) |
157 | pushfit(pf); | 157 | pushfit(pf); |
158 | }//rotate translate | 158 | }//rotate translate |
159 | }//rotate | 159 | }//rotate |
160 | }//translate teeth | 160 | }//translate teeth |
161 | }//translate pulley | 161 | }//translate pulley |
162 | }//translate protrusion | 162 | }//translate protrusion |
163 | }//vitamins | 163 | }//vitamins |
164 | 164 | ||
165 | module lever() { | 165 | module lever() { |
166 | translate([0,0,protrusion_h+pulley_elevation+teeth_elevation]) { | 166 | translate([0,0,protrusion_h+pulley_elevation+teeth_elevation]) { |
167 | difference() { | 167 | difference() { |
168 | union() { | 168 | union() { |
169 | hull() { | 169 | hull() { |
170 | place_idler() | 170 | place_idler() |
171 | cylinder(d=lsd,h=lever_thickness,center=true,$fn=60); | 171 | cylinder(d=lsd,h=lever_thickness,center=true,$fn=60); |
172 | translate([mount_d/2,0,0]) | 172 | translate([mount_d/2,0,0]) |
173 | cylinder(d=lsd,h=lever_thickness,center=true,$fn=60); | 173 | cylinder(d=lsd,h=lever_thickness,center=true,$fn=60); |
174 | }//hull | 174 | }//hull |
175 | hull() { | 175 | hull() { |
176 | translate([mount_d/2,0,0]) | 176 | translate([mount_d/2,0,0]) |
177 | cylinder(d=lsd,h=lever_thickness,center=true,$fn=60); | 177 | cylinder(d=lsd,h=lever_thickness,center=true,$fn=60); |
178 | translate([mount_d/2,-longwing,0]) rotate([0,90,0]) | 178 | translate([mount_d/2,-longwing,0]) rotate([0,90,0]) |
179 | cylinder(d=lever_thickness,h=lsd,center=true,$fn=60); | 179 | cylinder(d=lever_thickness,h=lsd,center=true,$fn=60); |
180 | }//hull | 180 | }//hull |
181 | }//union | 181 | }//union |
182 | 182 | ||
183 | // filament path | 183 | // filament path |
184 | place_idler() | 184 | place_idler() |
185 | translate([-idler_d/2-idler_filament_offset,0,0]) | 185 | translate([-idler_d/2-idler_filament_offset,0,0]) |
186 | rotate([90,0,0]) { | 186 | rotate([90,0,0]) { |
187 | mirror([0,1,0]) | 187 | mirror([0,1,0]) |
188 | teardrop(d=filament_path_d,h=3*gearbox_d,center=true); | 188 | teardrop(d=filament_path_d,h=3*gearbox_d,center=true); |
189 | translate([0,0, | 189 | translate([0,0, |
190 | sqrt(2)*(mount_d-pulley_d+lsd)/2 | 190 | sqrt(2)*(mount_d-pulley_d+lsd)/2 |
191 | ]) { | 191 | ]) { |
192 | cylinder(d1=filament_path_d,d2=2*filament_path_d, | 192 | cylinder(d1=filament_path_d,d2=2*filament_path_d, |
193 | h=filament_path_d,$fn=2*filament_path_d*fnd); | 193 | h=filament_path_d,$fn=2*filament_path_d*fnd); |
194 | translate([0,0,filament_path_d-epsilon]) | 194 | translate([0,0,filament_path_d-epsilon]) |
195 | cylinder(d=2*filament_path_d,h=lsd*sqrt(2),$fn=2*filament_path_d*fnd); | 195 | cylinder(d=2*filament_path_d,h=lsd*sqrt(2),$fn=2*filament_path_d*fnd); |
196 | }//translate | 196 | }//translate |
197 | }//rotate translate place_idler | 197 | }//rotate translate place_idler |
198 | 198 | ||
199 | // idler space and mounting hole | 199 | // idler space and mounting hole |
200 | place_idler() { | 200 | place_idler() { |
201 | difference() { | ||
202 | cylinder(d=idler_d+idler_clearance*2,h=idler_h+idler_v_tolerance,center=true,$fn=60); | 201 | cylinder(d=idler_d+idler_clearance*2,h=idler_h+idler_v_tolerance,center=true,$fn=60); |
203 | if(supports) for(y=[-lsd/2+extrusion_width:(lsd-2*extrusion_width)/3:lsd/2-extrusion_width]) | ||
204 | translate([-lsd/2-1,y-extrusion_width/2,-idler_h/2-idler_v_tolerance/2-1]) | ||
205 | cube(size=[lsd+2,extrusion_width,idler_h+idler_v_tolerance+2]); | ||
206 | } | ||
207 | cylinder(d=idler_screw_d,h=lever_thickness+2,center=true,$fn=30); | 202 | cylinder(d=idler_screw_d,h=lever_thickness+2,center=true,$fn=30); |
208 | translate([0,0,lever_thickness/2-idler_screwhead_h]) | 203 | translate([0,0,lever_thickness/2-idler_screwhead_h]) |
209 | cylinder(d=idler_screwhead_d,h=idler_screwhead_h+1,$fn=fnd*idler_screwhead_d); | 204 | cylinder(d=idler_screwhead_d,h=idler_screwhead_h+1,$fn=fnd*idler_screwhead_d); |
210 | } | 205 | } |
211 | // mounting screw hole | 206 | // mounting screw hole |
212 | translate([mount_d/2,0,0]) | 207 | translate([mount_d/2,0,0]) |
213 | cylinder(d=mount_screw_d+mount_screw_d_tolerance,h=lever_thickness+2,center=true,$fn=fnd*mount_screw_d); | 208 | cylinder(d=mount_screw_d+mount_screw_d_tolerance,h=lever_thickness+2,center=true,$fn=fnd*mount_screw_d); |
214 | 209 | ||
215 | // lever end | 210 | // lever end |
216 | translate([mount_d/2,0,0]) rotate([0,90,0]) { | 211 | translate([mount_d/2,0,0]) rotate([0,90,0]) { |
217 | translate([0,-longwing,lsd/2]) finger_indent(d=lever_thickness-1,r=15); | 212 | translate([0,-longwing,lsd/2]) finger_indent(d=lever_thickness-1,r=15); |
218 | translate([0,-longwing,0]) | 213 | translate([0,-longwing,0]) |
219 | mirror([0,0,1]) | 214 | mirror([0,0,1]) |
220 | difference() { | 215 | difference() { |
221 | cylinder(d=spring_d+spring_d_clearance,h=lsd,$fn=fnd*(spring_d+spring_d_clearance)); | 216 | cylinder(d=spring_d+spring_d_clearance,h=lsd,$fn=fnd*(spring_d+spring_d_clearance)); |
222 | sphere(d=spring_d*3/4,$fn=fnd*spring_d*3/4); | 217 | sphere(d=spring_d*3/4,$fn=fnd*spring_d*3/4); |
223 | } | 218 | } |
224 | }//rotate-translate | 219 | }//rotate-translate |
225 | }//difference | 220 | }//difference |
226 | // bridging patch | 221 | // bridging patch |
227 | if(bridges) place_idler() | 222 | if(bridges) place_idler() |
228 | translate([0,0,lever_thickness/2-mount_screwhead_h]) | 223 | translate([0,0,lever_thickness/2-mount_screwhead_h]) |
229 | mirror([0,0,1]) | 224 | mirror([0,0,1]) |
230 | cylinder(d=mount_screwhead_d,h=layer_height); | 225 | cylinder(d=mount_screwhead_d,h=layer_height); |
231 | }//translate | 226 | }//translate |
232 | }//lever module | 227 | }//lever module |
233 | 228 | ||
234 | module body() { | 229 | module body() { |
235 | difference() { | 230 | difference() { |
236 | union() { | 231 | union() { |
237 | cylinder(d=gearbox_d,h=body_h,$fn=fnd*gearbox_d); | 232 | cylinder(d=gearbox_d,h=body_h,$fn=fnd*gearbox_d); |
238 | // spring tensioner part | 233 | // spring tensioner part |
239 | translate([-gearbox_d/2,0,0]) hull() { | 234 | translate([-gearbox_d/2,0,0]) hull() { |
240 | translate([0,-longwing,ls_z]) | 235 | translate([0,-longwing,ls_z]) |
241 | rotate([0,90,0]) | 236 | rotate([0,90,0]) |
242 | cylinder(d=lever_thickness,h=fsw,$fn=fnd*lever_thickness); | 237 | cylinder(d=lever_thickness,h=fsw,$fn=fnd*lever_thickness); |
243 | hh=body_h-ls_z; | 238 | hh=body_h-ls_z; |
244 | translate([0,0,ls_z]) | 239 | translate([0,0,ls_z]) |
245 | mirror([0,1,0]) cube(size=[fsw,longwing+(st_thinshell+st_split_w_tolerance)/2+st_thickshell,body_h-ls_z]); | 240 | mirror([0,1,0]) cube(size=[fsw,longwing+(st_thinshell+st_split_w_tolerance)/2+st_thickshell,body_h-ls_z]); |
246 | hhh=ls_z; | 241 | hhh=ls_z; |
247 | translate([0,0,0]) | 242 | translate([0,0,0]) |
248 | mirror([0,1,0]) cube(size=[fsw,longwing-hhh+lever_thickness/sqrt(2),hhh+lever_thickness/2]); | 243 | mirror([0,1,0]) cube(size=[fsw,longwing-hhh+lever_thickness/sqrt(2),hhh+lever_thickness/2]); |
249 | }//hull translate | 244 | }//hull translate |
250 | 245 | ||
251 | // pushfit bracket | 246 | // pushfit bracket |
252 | translate([0,0,filament_elevation]) | 247 | translate([0,0,filament_elevation]) |
253 | rotate([0,0,45]) translate([pulley_d/2+filament_offset,0,0]) | 248 | rotate([0,0,45]) translate([pulley_d/2+filament_offset,0,0]) |
254 | rotate([-90,0,0]) | 249 | rotate([-90,0,0]) |
@@ -341,115 +336,96 @@ module the_extruder( | |||
341 | (pf_d(pf)+2*pf_shell)/2/cos(30) | 336 | (pf_d(pf)+2*pf_shell)/2/cos(30) |
342 | ) | 337 | ) |
343 | ); | 338 | ); |
344 | a0 = -135 + ( (a0_>0) ? a0_ : 180+a0_ ); | 339 | a0 = -135 + ( (a0_>0) ? a0_ : 180+a0_ ); |
345 | a1 = atan((longwing-lever_thickness/2)/(gearbox_d/2)); | 340 | a1 = atan((longwing-lever_thickness/2)/(gearbox_d/2)); |
346 | translate([0,0,ls_z]) difference() { | 341 | translate([0,0,ls_z]) difference() { |
347 | rotate([0,0,-180+a0]) | 342 | rotate([0,0,-180+a0]) |
348 | rotate_extrude(angle=a1-a0) | 343 | rotate_extrude(angle=a1-a0) |
349 | translate([0,-ls_h/2]) | 344 | translate([0,-ls_h/2]) |
350 | square([sqrt(pow(gearbox_d/2,2)+pow(longwing-lever_thickness/2,2))+1, | 345 | square([sqrt(pow(gearbox_d/2,2)+pow(longwing-lever_thickness/2,2))+1, |
351 | ls_h]); | 346 | ls_h]); |
352 | translate([-mount_d/2,0,0]) | 347 | translate([-mount_d/2,0,0]) |
353 | cylinder(d=gearbox_d-mount_d,h=ls_h+2,center=true,$fn=fnd*(gearbox_d-mount_d)); | 348 | cylinder(d=gearbox_d-mount_d,h=ls_h+2,center=true,$fn=fnd*(gearbox_d-mount_d)); |
354 | }//difference translate | 349 | }//difference translate |
355 | 350 | ||
356 | //translate([-mount_d/2,-longwing,filament_elevation]) | 351 | //translate([-mount_d/2,-longwing,filament_elevation]) |
357 | if(!tensioner) /* XXX: this seems to be bullshit, but it's so old, that it's historical bullshit */ | 352 | if(!tensioner) /* XXX: this seems to be bullshit, but it's so old, that it's historical bullshit */ |
358 | translate([mount_d/2,-longwing,filament_elevation]) | 353 | translate([mount_d/2,-longwing,filament_elevation]) |
359 | rotate([0,-90,0]) difference() { | 354 | rotate([0,-90,0]) difference() { |
360 | cylinder(d=spring_d+spring_d_clearance,h=spring_lc+spring_dl,$fn=fnd*(spring_d+spring_d_clearance)); | 355 | cylinder(d=spring_d+spring_d_clearance,h=spring_lc+spring_dl,$fn=fnd*(spring_d+spring_d_clearance)); |
361 | translate([0,0,spring_lc+spring_dl]) sphere(d=spring_d*3/4,$fn=fnd*spring_d*3/4); | 356 | translate([0,0,spring_lc+spring_dl]) sphere(d=spring_d*3/4,$fn=fnd*spring_d*3/4); |
362 | } | 357 | } |
363 | 358 | ||
364 | // spring tensioner | 359 | // spring tensioner |
365 | translate([-gearbox_d/2,-longwing,ls_z]) rotate([0,-90,0]) { | 360 | translate([-gearbox_d/2,-longwing,ls_z]) rotate([0,-90,0]) { |
366 | if(!tensioner) finger_indent(d=lever_thickness-1,r=15); else { | 361 | if(!tensioner) finger_indent(d=lever_thickness-1,r=15); else { |
367 | mirror([0,0,1]) { | 362 | mirror([0,0,1]) { |
368 | translate([0,0,st_thickshell]) | 363 | translate([0,0,st_thickshell]) |
369 | hull() for(o=[0,spring_d]) translate([0,-o,0]) | 364 | hull() for(o=[0,spring_d]) translate([0,-o,0]) |
370 | rotate([0,0,30]) | 365 | rotate([0,0,30]) |
371 | cylinder(d=st_nut_d+st_nut_d_tolerance,h=st_nut_h+st_nut_h_tolerance,$fn=6); | 366 | cylinder(d=st_nut_d+st_nut_d_tolerance,h=st_nut_h+st_nut_h_tolerance,$fn=6); |
372 | translate([0,0,-1]) cylinder(d=st_screw_d+st_screw_d_tolerance,h=fsw+2,$fn=fnd*(st_screw_d+st_screw_d_tolerance)); | 367 | 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)); |
373 | bigd = spring_d+spring_d_clearance; | 368 | bigd = spring_d+spring_d_clearance; |
374 | hf = (bigd-st_screw_d-st_screw_d_tolerance)/2; | 369 | hf = (bigd-st_screw_d-st_screw_d_tolerance)/2; |
375 | translate([0,0,st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell-epsilon]) { | 370 | translate([0,0,st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell-epsilon]) { |
376 | cylinder(d1=st_screw_d+st_screw_d_tolerance,d2=bigd, | 371 | cylinder(d1=st_screw_d+st_screw_d_tolerance,d2=bigd, |
377 | h=hf+epsilon, $fn=fnd*bigd); | 372 | h=hf+epsilon, $fn=fnd*bigd); |
378 | translate([0,-(st_thinshell+st_split_w_tolerance)/2,0]) | 373 | translate([0,-(st_thinshell+st_split_w_tolerance)/2,0]) |
379 | cube(size=[body_h-ls_z+1,st_thinshell+st_split_w_tolerance,fsw+1]); | 374 | cube(size=[body_h-ls_z+1,st_thinshell+st_split_w_tolerance,fsw+1]); |
380 | } | 375 | } |
381 | translate([0,0,st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell+hf-epsilon]) | 376 | translate([0,0,st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell+hf-epsilon]) |
382 | cylinder(d=bigd,h=fsw+1,$fn=fnd*bigd); | 377 | cylinder(d=bigd,h=fsw+1,$fn=fnd*bigd); |
383 | } | 378 | } |
384 | } | 379 | } |
385 | } | 380 | } |
386 | 381 | ||
387 | }//difference | 382 | }//difference |
388 | 383 | ||
389 | if(supports) intersection() { | ||
390 | difference() { | ||
391 | translate([0,0,ls_z-ls_h/2-epsilon]) | ||
392 | cylinder(d=gearbox_d,h=ls_h+2*epsilon,$fn=fnd*gearbox_d); | ||
393 | cylinder(d=pulley_d+pulley_d_clearance,h=body_h+1,$fn=fnd*(pulley_d+pulley_d_clearance)); | ||
394 | } | ||
395 | // supports | ||
396 | // TODO: hardcoded stuff below… | ||
397 | if(false) { // parallel | ||
398 | for(y=[-gearbox_d:4:gearbox_d]) | ||
399 | translate([0,y-extrusion_width/2,0]) | ||
400 | cube(size=[gearbox_d,extrusion_width,body_h]); | ||
401 | }else{ // radial | ||
402 | for(zr=[-65:(65+50)/7:50]) | ||
403 | rotate([0,0,zr]) translate([0,-extrusion_width/2,0]) | ||
404 | cube(size=[gearbox_d,extrusion_width,body_h]); | ||
405 | } | ||
406 | } | ||
407 | |||
408 | }//body module | 384 | }//body module |
409 | 385 | ||
410 | module springpad() { | 386 | module springpad() { |
411 | smalld=st_screw_d+st_screw_d_tolerance+min_xy_shell; | 387 | smalld=st_screw_d+st_screw_d_tolerance+min_xy_shell; |
412 | bigd = spring_d+spring_d_clearance/2; | 388 | bigd = spring_d+spring_d_clearance/2; |
413 | hf = (bigd-smalld)/2; | 389 | hf = (bigd-smalld)/2; |
414 | h = hf*3.5; | 390 | h = hf*3.5; |
415 | translate([-gearbox_d/2+st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell+1,-longwing,filament_elevation]) | 391 | translate([-gearbox_d/2+st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell+1,-longwing,filament_elevation]) |
416 | rotate([0,90,0]) difference() { | 392 | rotate([0,90,0]) difference() { |
417 | union() { | 393 | union() { |
418 | cylinder(d1=smalld,d2=bigd,h=hf,$fn=fnd*bigd); | 394 | cylinder(d1=smalld,d2=bigd,h=hf,$fn=fnd*bigd); |
419 | translate([0,0,hf-epsilon]) | 395 | translate([0,0,hf-epsilon]) |
420 | cylinder(d=bigd,h=h-hf,$fn=fnd*bigd); | 396 | cylinder(d=bigd,h=h-hf,$fn=fnd*bigd); |
421 | translate([0,0,h]) | 397 | translate([0,0,h]) |
422 | sphere(d=spring_d*3/4,$fn=fnd*spring_d*3/4); | 398 | sphere(d=spring_d*3/4,$fn=fnd*spring_d*3/4); |
423 | l = body_h-ls_z; | 399 | l = body_h-ls_z; |
424 | w = st_thinshell; | 400 | w = st_thinshell; |
425 | hull() translate([0,-st_thinshell/2,0]) mirror([1,0,0]) { | 401 | hull() translate([0,-st_thinshell/2,0]) mirror([1,0,0]) { |
426 | translate([0,0,w]) | 402 | translate([0,0,w]) |
427 | cube(size=[l,st_thinshell,w]); | 403 | cube(size=[l,st_thinshell,w]); |
428 | cube(size=[l-w,st_thinshell,2*w]); | 404 | cube(size=[l-w,st_thinshell,2*w]); |
429 | } | 405 | } |
430 | } | 406 | } |
431 | translate([0,0,-epsilon]) | 407 | translate([0,0,-epsilon]) |
432 | cylinder(d=st_screw_d+st_screw_d_tolerance,h=2*hf+epsilon,$fn=fnd*(st_screw_d+st_screw_d_tolerance)); | 408 | cylinder(d=st_screw_d+st_screw_d_tolerance,h=2*hf+epsilon,$fn=fnd*(st_screw_d+st_screw_d_tolerance)); |
433 | } | 409 | } |
434 | } | 410 | } |
435 | 411 | ||
436 | module knob() { | 412 | module knob() { |
437 | ch = knob_indent_d/2; | 413 | ch = knob_indent_d/2; |
438 | translate([0,0,body_h+epsilon]) { | 414 | translate([0,0,body_h+epsilon]) { |
439 | mirror([0,0,1]) translate([0,0,-epsilon]) { | 415 | mirror([0,0,1]) translate([0,0,-epsilon]) { |
440 | difference() { | 416 | difference() { |
441 | cylinder(d=pulley_d,h=knob_bore_l,$fn=fnd*pulley_d); | 417 | cylinder(d=pulley_d,h=knob_bore_l,$fn=fnd*pulley_d); |
442 | translate([0,0,-1]) difference() { | 418 | translate([0,0,-1]) difference() { |
443 | cylinder(d=bore_d+knob_bore_d_tolerance,h=knob_bore_l+2); | 419 | cylinder(d=bore_d+knob_bore_d_tolerance,h=knob_bore_l+2); |
444 | translate([-bore_d/2-1,bore_dd-bore_d/2+knob_bore_d_tolerance/2,-1]) | 420 | translate([-bore_d/2-1,bore_dd-bore_d/2+knob_bore_d_tolerance/2,-1]) |
445 | cube([bore_d+2,bore_d/2,knob_bore_l+4]); | 421 | cube([bore_d+2,bore_d/2,knob_bore_l+4]); |
446 | } | 422 | } |
447 | } | 423 | } |
448 | } | 424 | } |
449 | difference() { | 425 | difference() { |
450 | union() { | 426 | union() { |
451 | cylinder(d1=gearbox_d-2*ch,d2=gearbox_d,h=ch+epsilon,$fn=fnd*gearbox_d); | 427 | cylinder(d1=gearbox_d-2*ch,d2=gearbox_d,h=ch+epsilon,$fn=fnd*gearbox_d); |
452 | translate([0,0,ch]) | 428 | translate([0,0,ch]) |
453 | cylinder(d=gearbox_d,h=knob_h-2*ch+epsilon,$fn=fnd*gearbox_d); | 429 | cylinder(d=gearbox_d,h=knob_h-2*ch+epsilon,$fn=fnd*gearbox_d); |
454 | translate([0,0,knob_h-ch]) | 430 | translate([0,0,knob_h-ch]) |
455 | cylinder(d1=gearbox_d,d2=gearbox_d-2*ch,h=ch,$fn=fnd*gearbox_d); | 431 | cylinder(d1=gearbox_d,d2=gearbox_d-2*ch,h=ch,$fn=fnd*gearbox_d); |