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-rw-r--r--another.scad4
1 files changed, 2 insertions, 2 deletions
diff --git a/another.scad b/another.scad
index 55fda78..b2e6c74 100644
--- a/another.scad
+++ b/another.scad
@@ -60,49 +60,49 @@ module the_extruder(
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=.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,
what="lever", // lever|body|knob|springpad|*
left=false,
vitamins = true,
supports = false, bridges = true,
tensioner = true,
debug = false
) {
fnd = 2*PI; fnr = 2*fnd;
idler_filament_offset = filament_path_d/2; // -filament_offset;
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; // the diameter of lever thingie
- longwing=(mount_d+mount_screw_d+mount_screw_d_tolerance+spring_d+spring_d_clearance)/2+extrusion_width;
+ 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
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);
module teardrop(r,d,h,center=false,angle=45) {
dd = d ? d : (2*r);
$fn = dd*fnd;
cylinder(d=dd,h=h,center=center);
if(angle>0) translate([0,0,center?-h/2:0])
rotate([0,0,angle])
@@ -388,49 +388,49 @@ module the_extruder(
}//difference
if(supports) intersection() {
difference() {
translate([0,0,ls_z-ls_h/2-epsilon])
cylinder(d=gearbox_d,h=ls_h+2*epsilon,$fn=fnd*gearbox_d);
cylinder(d=pulley_d+pulley_d_clearance,h=body_h+1,$fn=fnd*(pulley_d+pulley_d_clearance));
}
// supports
// TODO: hardcoded stuff below…
if(false) { // parallel
for(y=[-gearbox_d:4:gearbox_d])
translate([0,y-extrusion_width/2,0])
cube(size=[gearbox_d,extrusion_width,body_h]);
}else{ // radial
for(zr=[-65:(65+50)/7:50])
rotate([0,0,zr]) translate([0,-extrusion_width/2,0])
cube(size=[gearbox_d,extrusion_width,body_h]);
}
}
}//body module
module springpad() {
- smalld=st_screw_d+st_screw_d_tolerance+2*extrusion_width;
+ smalld=st_screw_d+st_screw_d_tolerance+min_xy_shell;
bigd = spring_d+spring_d_clearance/2;
hf = (bigd-smalld)/2;
h = hf*3.5;
translate([-gearbox_d/2+st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell+1,-longwing,filament_elevation])
rotate([0,90,0]) difference() {
union() {
cylinder(d1=smalld,d2=bigd,h=hf,$fn=fnd*bigd);
translate([0,0,hf-epsilon])
cylinder(d=bigd,h=h-hf,$fn=fnd*bigd);
translate([0,0,h])
sphere(d=spring_d*3/4,$fn=fnd*spring_d*3/4);
l = body_h-ls_z;
w = st_thinshell;
hull() translate([0,-st_thinshell/2,0]) mirror([1,0,0]) {
translate([0,0,w])
cube(size=[l,st_thinshell,w]);
cube(size=[l-w,st_thinshell,2*w]);
}
}
translate([0,0,-epsilon])
cylinder(d=st_screw_d+st_screw_d_tolerance,h=2*hf+epsilon,$fn=fnd*(st_screw_d+st_screw_d_tolerance));
}
}