author | Michael Krelin <hacker@klever.net> | 2018-08-12 00:52:29 (UTC) |
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committer | Michael Krelin <hacker@klever.net> | 2018-08-12 00:52:29 (UTC) |
commit | 84832958278728643334a327bc3a2783ad354d72 (patch) (side-by-side diff) | |
tree | ded21c16730d38a19cd8e89f3e52314018e7eeb3 | |
parent | 60f188ff063a4c6f7e5d4a1078fd520a84f829c4 (diff) | |
download | extrudery-84832958278728643334a327bc3a2783ad354d72.zip extrudery-84832958278728643334a327bc3a2783ad354d72.tar.gz extrudery-84832958278728643334a327bc3a2783ad354d72.tar.bz2 |
increase spring tensioner screw tolerance
-rw-r--r-- | another.scad | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/another.scad b/another.scad index 4c4af5c..f54c5cd 100644 --- a/another.scad +++ b/another.scad @@ -1,126 +1,126 @@ draft=true; layer_height=0.2; extrusion_width=0.4; epsilon=0.01; $fs=0.0125; use <pushfittery.scad>; include <pushfit_data.scad>; module the_extruder( // motor properties gearbox_d = 36, mount_d = 28, // the distance between opposite mounting holes mounthole_depth = 5, protrusion_d = 22, protrusion_h = 2.2, // the dimensions of the protrusion on top of gearbox bore_d = 8, bore_l = 17.6, bore_dd = 7, // pulley properties pulley_d = 11.5, pulley_h=10, pulley_elevation = 1, // pulley elevation above the protrusion teeth_elevation = 7.5, // distance from the bottom of the pulley to its teeth // idler properties idler_d = 9.5, idler_h = 4, idler_id = 3, // idler dimensions: outer and inner diameters and height // spring properties spring_d = 10, spring_lc = 9.6, // spring diameter and compressed length // filament path properties filament_d = 1.75, filament_path_d = 2, filament_guide_d = 4, // PTFE filament guide diameter // knob properties knob_h = 10, knob_bore_l = 4, knob_indent_d = 4, knob_indents = 12, // spring tensioner st_nut_d = 9, st_nut_h = 4, st_screw_d = 5, st_thickshell = 8*extrusion_width, st_thinshell = 4*extrusion_width, // screw it mount_screw_d = 3.1, mount_screw_l = 20, mount_screwhead_d=6, mount_screwhead_h=3, idler_screw_d = 3, idler_screwhead_d=6, idler_screwhead_h=3, pf = pushfit_embeddest, pf_shell = max(3*layer_height,3*extrusion_width), pf_smooth = true, // empty spaces idler_travel = 3, // how far should idler travel when pressed idler_clearance=1, pulley_clearance=2, lever_v_clearance=.7, // vertical clearance for the lever spring_d_clearance=1, protrusion_tolerance_h=.5, // horizontal tolerance for the motor protrusion protrusion_tolerance_v=.5, // vertical tolerance for the motor protrusion mount_screw_d_tolerance=.4, idler_v_tolerance=.5, knob_bore_d_tolerance=.6, st_nut_h_tolerance=.2, st_nut_d_tolerance=.2,/* TODO: make it st_nut_w_tolerance */ - st_screw_d_tolerance=.3, + st_screw_d_tolerance=.5, what="lever", // lever|body|knob|springpad|* left=false, vitamins = true, supports = false, bridges = true, tensioner = true, debug = false ) { fnd = 2*PI; fnr = 2*fnd; lever_shell = mount_screwhead_h+0.5; lever_thickness=max(spring_d+spring_d_clearance+layer_height*8,idler_h+idler_v_tolerance+2*lever_shell); lsd = idler_d-idler_clearance*2; longwing=gearbox_d/2+spring_d/2+lsd/2; h_ = (pulley_d+idler_d)/(2*sqrt(2)); ri = sqrt( pow(h_,2) + pow(mount_d/2-h_,2) ); spring_dl = idler_travel*longwing/ri; filament_elevation=protrusion_h+pulley_elevation+teeth_elevation; ls_z = filament_elevation; // leverspace mid-z body_h = max(protrusion_h+bore_l,mount_screw_l-mounthole_depth/2+mount_screwhead_h,ls_z*2); ls_h = lever_thickness+lever_v_clearance; // leverspace height module mirrorleft() { mirror([left?0:1,0,0]) children(); } module place_idler() { rotate([0,0,45]) translate([(pulley_d+idler_d)/2,0,0]) children(); } module finger_indent(d=lever_thickness,depth/*=1*/,r/*=15*/) { if(depth) { hh = (-4*pow(depth,2)+pow(d,2))/(8*depth); rr = depth+hh; translate([0,0,hh]) sphere(r=rr,$fn=fnr*rr); }else if(r) { hh=sqrt(pow(r,2)-pow(d,2)/4); translate([0,0,hh]) sphere(r=r,$fn=fnr*r); } } % if(vitamins) mirrorleft() { translate([0,0,-epsilon]) mirror([0,0,1]) cylinder(d=gearbox_d,h=1,$fn=60); for(zr=[0:90:359]) rotate([0,0,zr]) translate([mount_d/2,0,0]) cylinder(d=mount_screw_d,h=20,$fn=30); translate([0,0,-epsilon]) cylinder(d=protrusion_d,h=protrusion_h,$fn=30); translate([0,0,protrusion_h]) { difference() { cylinder(d=bore_d,h=bore_l,$fn=30); translate([-bore_d/2-1,bore_dd-bore_d/2,-1]) cube([bore_d+2,bore_d/2,bore_l+2]); } translate([0,0,pulley_elevation]) { cylinder(d=pulley_d,h=pulley_h,$fn=30); translate([0,0,teeth_elevation]) { place_idler() { cylinder(d=idler_d,h=idler_h,center=true,$fn=30); cylinder(d=idler_screw_d,h=lever_thickness+2,center=true,$fn=30); }//place idler // filament path rotate([0,0,45]) translate([pulley_d/2,0,0]) { rotate([90,0,0]) cylinder(d=filament_d,h=gearbox_d*2,center=true,$fn=15); rotate([-90,0,0]) |