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-rw-r--r--another.scad11
1 files changed, 8 insertions, 3 deletions
diff --git a/another.scad b/another.scad
index 92187c5..8ba0d58 100644
--- a/another.scad
+++ b/another.scad
@@ -75,24 +75,26 @@ module the_extruder(
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 = 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
@@ -349,26 +351,29 @@ module the_extruder(
translate([-gearbox_d/2,-longwing,ls_z]) rotate([0,-90,0]) {
mirror([0,0,1]) {
translate([0,0,st_thickshell])
hull() for(o=[0,spring_d]) translate([0,-o,0])
rotate([0,0,30])
cylinder(d=st_nut_d+st_nut_d_tolerance,h=st_nut_h+st_nut_h_tolerance,$fn=6);
translate([0,0,-1]) cylinder(d=st_screw_d+st_screw_d_tolerance,h=fsw+2,$fn=fnd*(st_screw_d+st_screw_d_tolerance));
bigd = spring_d+spring_d_clearance;
hf = (bigd-st_screw_d-st_screw_d_tolerance)/2;
translate([0,0,st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell-epsilon]) {
cylinder(d1=st_screw_d+st_screw_d_tolerance,d2=bigd,
h=hf+epsilon, $fn=fnd*bigd);
- translate([0,-(st_split_w+st_split_w_tolerance)/2,0])
- cube(size=[body_h-ls_z+1,st_split_w+st_split_w_tolerance,fsw+1]);
+ translate([0,-(st_split_w+st_split_w_tolerance)/2,0]) hull() {
+ cube(size=[body_h-ls_z-sp_ch-st_split_w_tolerance,st_split_w+st_split_w_tolerance,fsw+1]);
+ translate([0,0,sp_ch+st_split_w_tolerance+1])
+ cube(size=[body_h-ls_z+1,st_split_w+st_split_w_tolerance,fsw+1]);
+ }
}//translate
translate([0,0,st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell+hf-epsilon])
cylinder(d=bigd,h=fsw+1,$fn=fnd*bigd);
}//mirror
}//translate
// label
body_label();
}//difference
}//body module
@@ -391,25 +396,25 @@ module the_extruder(
bigd = spring_d+spring_d_clearance/2;
hf = (bigd-smalld)/2;
h = max(hf,fsw-st_screw_l+hf);
translate([-gearbox_d/2+fsw-h,-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,$fn=fnd*spring_d*3/4);
l = body_h-ls_z;
- w = st_split_w;
+ w = sp_ch;
hull() translate([0,-st_split_w/2,0]) mirror([1,0,0]) {
translate([0,0,w])
cube(size=[l,st_split_w,w]);
cube(size=[l-w,st_split_w,2*w]);
}
}
translate([0,0,-epsilon])
cylinder(d=st_screw_d+st_screw_d_tolerance,h=st_screw_l-fsw+h+2*epsilon,$fn=fnd*(st_screw_d+st_screw_d_tolerance));
}
}
module knob() {