author | Michael Krelin <hacker@klever.net> | 2018-09-04 20:16:04 (UTC) |
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committer | Michael Krelin <hacker@klever.net> | 2018-09-04 20:16:04 (UTC) |
commit | 1ad17a1b1dc1365e201a6f9d647ec31bda42beb7 (patch) (side-by-side diff) | |
tree | faf83fa869f7797dc9b1ea43b36e666c5c85187b | |
parent | 416fff4142cc472af0e4c26a89df0c2e0957b518 (diff) | |
download | extrudery-1ad17a1b1dc1365e201a6f9d647ec31bda42beb7.zip extrudery-1ad17a1b1dc1365e201a6f9d647ec31bda42beb7.tar.gz extrudery-1ad17a1b1dc1365e201a6f9d647ec31bda42beb7.tar.bz2 |
Revert "increase default bore_d tolerance"
This reverts commit 183ac2d4948c69d97b5491dcf83fb238d53ac121.
-rw-r--r-- | another.scad | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/another.scad b/another.scad index f3305a1..a25e047 100644 --- a/another.scad +++ b/another.scad @@ -1,156 +1,156 @@ draft=true; layer_height=0.2; extrusion_width=0.4; epsilon=0.01; $fs=0.0125; use <pushfittery.scad>; include <pushfit_data.scad>; include <pulley_data.scad>; module the_extruder( // motor properties gearbox_d = 36, mount_d = 28, // the distance between opposite mounting holes mounthole_depth = 5, mounthole_min_depth = 3, mounthole_max_depth = 4, 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 = pulley_e3d, pulley_elevation = 1, // pulley elevation above the protrusion // idler properties idler_d = 10, 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_indent_d = 4, knob_indents = 12, knob_v_clearance = 1, // spring tensioner st_nut_d = 9, st_nut_h = 4, st_screw_d = 5, st_screw_l = 16, st_thickshell = 8*extrusion_width, st_thinshell = 2*extrusion_width, st_split_w = 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_metal, pf_shell = max(3*layer_height,3*extrusion_width), // empty spaces idler_travel = 1.75*2, // how far should idler travel when pressed idler_clearance=.5, pulley_small_d_clearance=.5, 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=.8, + 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=.5, st_split_w_tolerance = .3, min_z_shell = 4*layer_height, // the very minimal shell thickness along z-axis. min_xy_shell = 2*extrusion_width, body_label = "another", body_label_thickness = layer_height, knob_label = "another", knob_label_thickness = 2*layer_height, knob_label_size=undef, what="lever", // lever|body|knob|springpad|* left=false, vitamins = true, bridges = true, debug = false, ) { fnd = 2*PI; fnr = 2*fnd; function lu(m,k) = m[search([k],m)[0]][1]; pulley_d = lu(pulley,"d"); pulley_h = lu(pulley,"h"); teeth_elevation = lu(pulley,"fe"); filament_offset = lu(pulley,"g")+filament_d/2; pulley_d_clearance = lu(pulley,"ssrc")*2; sp_ch = st_split_w; idler_filament_offset = filament_path_d/2; 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 = min(gearbox_d-mount_d,idler_d-idler_clearance*2); // the diameter of lever thingie longwing=(mount_d+mount_screw_d+mount_screw_d_tolerance+spring_d+spring_d_clearance)/2+min_xy_shell; shortwing = let(a=mount_d/2,c=(pulley_d+idler_d)/2/sqrt(2)) sqrt(c*c+pow(a-c,2)); longwing_travel = idler_travel*longwing/shortwing; 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; // finger and spring support width fsw = gearbox_d-(gearbox_d-mount_d)/2-max(spring_lc,longwing_travel+(gearbox_d-mount_d)/2); mount_min_depth = mounthole_min_depth ? mounthole_min_depth : mounthole_depth-1; mount_max_depth = mounthole_max_depth ? mounthole_max_depth : mounthole_depth+1; filament_elevation=protrusion_h+pulley_elevation+teeth_elevation; ls_z = filament_elevation; // leverspace mid-z ls_h = lever_thickness+lever_v_clearance; // leverspace height mount_depth = mount_screw_l - (ls_z+ls_h/2+min_z_shell); body_h = max(protrusion_h+bore_l,mount_screw_l-mount_depth+mount_screwhead_h+min_z_shell,ls_z*2); echo("mount depth",mount_depth); pf_offset = mount_d/sqrt(2)/2+mount_screw_d/2+min_xy_shell; module teardrop(r,d,h,center=false,angle=45) { dd = d ? d : (2*r); $fn = dd*fnd; cylinder(d=dd,h=h,center=center); if(angle>0) translate([0,0,center?-h/2:0]) rotate([0,0,angle]) cube(size=[d/2,d/2,h]); } module mirrorleft() { mirror([left?0:1,0,0]) children(); } module place_idler() { rotate([0,0,45]) translate([(pulley_d+idler_d)/2,0,0]) children(); } module finger_indent(d=lever_thickness,depth/*=1*/,r/*=15*/) { if(depth) { hh = (-4*pow(depth,2)+pow(d,2))/(8*depth); rr = depth+hh; translate([0,0,hh]) sphere(r=rr,$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() { |