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authorMichael Krelin <hacker@klever.net>2018-08-21 18:00:15 (UTC)
committer Michael Krelin <hacker@klever.net>2018-08-21 18:00:15 (UTC)
commiteb49701c13f76640936e7a2a7a138bd92617b147 (patch) (unidiff)
treee8e4629a861c5e9bfc15a5c6d09e471aa2bc1b38
parentfc213f6b29f62795ce33d0e0acdea1e6a6b0fffb (diff)
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adjustments to screw mount depth
Diffstat (more/less context) (ignore whitespace changes)
-rw-r--r--another.scad15
1 files changed, 11 insertions, 4 deletions
diff --git a/another.scad b/another.scad
index 6afa9ef..6ef7299 100644
--- a/another.scad
+++ b/another.scad
@@ -8,12 +8,13 @@ include <pushfit_data.scad>;
8 8
9module the_extruder( 9module the_extruder(
10 // motor properties 10 // motor properties
11 gearbox_d = 36, 11 gearbox_d = 36,
12 mount_d = 28, // the distance between opposite mounting holes 12 mount_d = 28, // the distance between opposite mounting holes
13 mounthole_depth = 5, 13 mounthole_depth = 5,
14 mounthole_min_depth = 3, mounthole_max_depth = 4,
14 protrusion_d = 22, protrusion_h = 2.2, // the dimensions of the protrusion on top of gearbox 15 protrusion_d = 22, protrusion_h = 2.2, // the dimensions of the protrusion on top of gearbox
15 bore_d = 8, bore_l = 17.6, 16 bore_d = 8, bore_l = 17.6,
16 bore_dd = 7, 17 bore_dd = 7,
17 // pulley properties 18 // pulley properties
18 pulley_d = 11.5, pulley_h=10, 19 pulley_d = 11.5, pulley_h=10,
19 pulley_elevation = 1, // pulley elevation above the protrusion 20 pulley_elevation = 1, // pulley elevation above the protrusion
@@ -59,12 +60,14 @@ module the_extruder(
59 idler_v_tolerance=.5, 60 idler_v_tolerance=.5,
60 knob_bore_d_tolerance=.6, 61 knob_bore_d_tolerance=.6,
61 st_nut_h_tolerance=.2, 62 st_nut_h_tolerance=.2,
62 st_nut_d_tolerance=.2,/* TODO: make it st_nut_w_tolerance */ 63 st_nut_d_tolerance=.2,/* TODO: make it st_nut_w_tolerance */
63 st_screw_d_tolerance=.5, 64 st_screw_d_tolerance=.5,
64 65
66 min_z_shell = 4*layer_height, // the very minimal shell thickness along z-axis.
67
65 what="lever", // lever|body|knob|springpad|* 68 what="lever", // lever|body|knob|springpad|*
66 left=false, 69 left=false,
67 vitamins = true, 70 vitamins = true,
68 supports = false, bridges = true, 71 supports = false, bridges = true,
69 tensioner = true, 72 tensioner = true,
70 debug = false 73 debug = false
@@ -77,16 +80,20 @@ module the_extruder(
77 lsd = idler_d-idler_clearance*2; 80 lsd = idler_d-idler_clearance*2;
78 longwing=gearbox_d/2+spring_d/2+lsd/2; 81 longwing=gearbox_d/2+spring_d/2+lsd/2;
79 h_ = (pulley_d+idler_d)/(2*sqrt(2)); 82 h_ = (pulley_d+idler_d)/(2*sqrt(2));
80 ri = sqrt( pow(h_,2) + pow(mount_d/2-h_,2) ); 83 ri = sqrt( pow(h_,2) + pow(mount_d/2-h_,2) );
81 spring_dl = idler_travel*longwing/ri; 84 spring_dl = idler_travel*longwing/ri;
82 85
86 mount_min_depth = mounthole_min_depth ? mounthole_min_depth : mounthole_depth-1;
87 mount_max_depth = mounthole_max_depth ? mounthole_max_depth : mounthole_depth+1;
83 filament_elevation=protrusion_h+pulley_elevation+teeth_elevation; 88 filament_elevation=protrusion_h+pulley_elevation+teeth_elevation;
84 ls_z = filament_elevation; // leverspace mid-z 89 ls_z = filament_elevation; // leverspace mid-z
85 body_h = max(protrusion_h+bore_l,mount_screw_l-mounthole_depth/2+mount_screwhead_h,ls_z*2);
86 ls_h = lever_thickness+lever_v_clearance; // leverspace height 90 ls_h = lever_thickness+lever_v_clearance; // leverspace height
91 mount_depth = mount_screw_l - (ls_z+ls_h/2+min_z_shell);
92 body_h = max(protrusion_h+bore_l,mount_screw_l-mount_depth+mount_screwhead_h+min_z_shell,ls_z*2);
93 echo("mount depth",mount_depth);
87 94
88 module mirrorleft() { 95 module mirrorleft() {
89 mirror([left?0:1,0,0]) children(); 96 mirror([left?0:1,0,0]) children();
90 } 97 }
91 module place_idler() { 98 module place_idler() {
92 rotate([0,0,45]) 99 rotate([0,0,45])
@@ -285,18 +292,18 @@ module the_extruder(
285 292
286 // protrusion 293 // protrusion
287 translate([0,0,-1]) 294 translate([0,0,-1])
288 cylinder(d=protrusion_d+protrusion_tolerance_h,h=protrusion_h+protrusion_tolerance_v+1,$fn=fnd*(protrusion_d+protrusion_tolerance_h)); 295 cylinder(d=protrusion_d+protrusion_tolerance_h,h=protrusion_h+protrusion_tolerance_v+1,$fn=fnd*(protrusion_d+protrusion_tolerance_h));
289 // mount screw holes 296 // mount screw holes
290 for(zr=[0:90:359]) rotate([0,0,zr]) translate([mount_d/2,0,0]) { 297 for(zr=[0:90:359]) rotate([0,0,zr]) translate([mount_d/2,0,0]) {
291 translate([0,0,mount_screw_l-mounthole_depth/2-(bridges?layer_height:-epsilon)]) 298 translate([0,0,mount_screw_l-mount_depth-(bridges?layer_height:-epsilon)])
292 mirror([0,0,1]) 299 mirror([0,0,1])
293 cylinder(d=mount_screw_d+mount_screw_d_tolerance, 300 cylinder(d=mount_screw_d+mount_screw_d_tolerance,
294 h=mount_screw_l-mounthole_depth/2+1, 301 h=mount_screw_l-mount_depth+1,
295 $fn=fnd*(mount_screw_d+mount_screw_d_tolerance)); 302 $fn=fnd*(mount_screw_d+mount_screw_d_tolerance));
296 translate([0,0,mount_screw_l-mounthole_depth/2]) 303 translate([0,0,mount_screw_l-mount_depth])
297 cylinder(d=mount_screwhead_d,h=body_h+1,$fn=fnd*mount_screwhead_d); 304 cylinder(d=mount_screwhead_d,h=body_h+1,$fn=fnd*mount_screwhead_d);
298 }//for 305 }//for
299 // pushfit 306 // pushfit
300 translate([0,0,filament_elevation]) 307 translate([0,0,filament_elevation])
301 rotate([0,0,45]) translate([pulley_d/2+filament_offset,0,0]) 308 rotate([0,0,45]) translate([pulley_d/2+filament_offset,0,0])
302 rotate([-90,0,0]) 309 rotate([-90,0,0])