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-rw-r--r--another.scad37
1 files changed, 32 insertions, 5 deletions
diff --git a/another.scad b/another.scad
index fd73a61..83a4e43 100644
--- a/another.scad
+++ b/another.scad
@@ -328,191 +328,218 @@ module the_extruder(
// XXX: this is somewhat ugly and potentially bugged,
// but I want to sleep.
a0_ = atan(
(pf_offset+pf_h(pf)+gearbox_d/2)
/
(
pulley_d/2+filament_offset-
(pf_d(pf)+2*pf_shell)/2/cos(30)
)
);
a0 = -135 + ( (a0_>0) ? a0_ : 180+a0_ );
a1 = atan((longwing-lever_thickness/2)/(gearbox_d/2));
translate([0,0,ls_z]) difference() {
rotate([0,0,-180+a0])
rotate_extrude(angle=a1-a0)
translate([0,-ls_h/2])
square([sqrt(pow(gearbox_d/2,2)+pow(longwing-lever_thickness/2,2))+1,
ls_h]);
translate([-mount_d/2,0,0])
cylinder(d=gearbox_d-mount_d,h=ls_h+2,center=true,$fn=fnd*(gearbox_d-mount_d));
}//difference translate
// spring tensioner
translate([-gearbox_d/2,-longwing,ls_z]) rotate([0,-90,0]) {
mirror([0,0,1]) {
translate([0,0,st_thickshell])
hull() for(o=[0,spring_d]) translate([0,-o,0])
rotate([0,0,30])
cylinder(d=st_nut_d+st_nut_d_tolerance,h=st_nut_h+st_nut_h_tolerance,$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, $fn=fnd*bigd);
translate([0,-(st_split_w+st_split_w_tolerance)/2,0]) hull() {
cube(size=[body_h-ls_z-sp_ch-st_split_w_tolerance,st_split_w+st_split_w_tolerance,fsw+1]);
translate([0,0,sp_ch+st_split_w_tolerance+1])
cube(size=[body_h-ls_z+1,st_split_w+st_split_w_tolerance,fsw+1]);
}
}//translate
translate([0,0,st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell+hf-epsilon])
cylinder(d=bigd,h=fsw+1,$fn=fnd*bigd);
}//mirror
}//translate
// label
body_label();
+ // scale
+ body_scale();
}//difference
}//body module
+ module body_scale() {
+ scale_thickness = 2*layer_height;
+ nscales = 5;
+ x1 = -gearbox_d/2+fsw-st_h+st_w+st_bump*2-st_bump_tip/2;
+ x0 = -gearbox_d/2+st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell+st_split_w+st_split_w_tolerance+st_bump_tip/2;
+ w0 = st_split_w+st_split_w_tolerance+2*(extrusion_width+2*extrusion_width);
+ w1 = 2*(longwing-gearbox_d/2-extrusion_width);
+ translate([0,-longwing,body_h-scale_thickness])
+ difference() {
+ for(x=[x0:(x1-x0)/(nscales-1):x1]) let(w=w0+(w1-w0)*(x-x0)/(x1-x0))
+ translate([x-st_bump_tip/2,-w/2,0])
+ cube(size=[st_bump_tip,w,scale_thickness+epsilon]);
+ let(w=st_split_w+st_split_w_tolerance+extrusion_width)
+ translate([-gearbox_d/2,-w/2,-1])
+ cube(size=[fsw,w,scale_thickness+2]);
+ }
+ }
module body_label() {
if(body_label) {
label=body_label;
label_thickness=body_label_thickness;
label_len = len(label);
labelspace = [gearbox_d/2-mount_screwhead_d/2-min_xy_shell,longwing-(mount_screwhead_d-st_split_w-st_split_w_tolerance)/2-2*min_xy_shell];
translate([0,0,body_h-label_thickness])
linear_extrude(height=label_thickness+epsilon,convexity=64)
translate([-mount_screwhead_d/2-min_xy_shell-labelspace.x/2,-longwing+(st_split_w+st_split_w_tolerance)/2+min_xy_shell+labelspace.y/2])
mirror([left?0:1,0])
text(text=label,size=labelspace.x/label_len,halign="center",valign="center",font="Arial Black");
}else sphere(d=epsilon); // to avoid makefile breakage
}
st_bump = 4*extrusion_width;
st_bump_tip = 2*extrusion_width;
+ st_smalld = st_screw_d+st_screw_d_tolerance+min_xy_shell;
+ st_bigd = spring_d+spring_d_clearance/2;
+ st_hf = (st_bigd-st_smalld)/2;
+ st_h = max(st_hf*3,fsw-st_screw_l+st_hf);
+ st_w = sp_ch;
module springpad() {
- smalld=st_screw_d+st_screw_d_tolerance+min_xy_shell;
- bigd = spring_d+spring_d_clearance/2;
- hf = (bigd-smalld)/2;
- h = max(hf*3,fsw-st_screw_l+hf);
+ smalld=st_smalld;
+ bigd = st_bigd;
+ hf = st_hf;
+ h = st_h;
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,$fn=fnd*spring_d*3/4);
l = body_h-ls_z;
- w = sp_ch;
+ w = st_w;
translate([0,-st_split_w/2,0]) mirror([1,0,0]) {
hull() {
translate([0,0,w+st_bump])
cube(size=[l+st_bump,st_split_w,w]);
cube(size=[l-w,st_split_w,2*w]);
}
translate([l,0,w+st_bump]) hull() {
cube(size=[st_split_w,st_split_w,st_bump]);
translate([0,-st_bump+st_bump_tip,st_bump]) mirror([0,0,1])
cube(size=[st_split_w,st_split_w+2*(st_bump-st_bump_tip),st_bump_tip]);
}
}
}
translate([0,0,-epsilon])
cylinder(d=st_screw_d+st_screw_d_tolerance,
h=min(st_screw_l,fsw-hf)-fsw+h+2*epsilon,$fn=fnd*(st_screw_d+st_screw_d_tolerance));
}
}
module knob() {
ch = knob_indent_d/2;
knob_bore_l = body_h-protrusion_h-pulley_elevation-pulley_h-knob_v_clearance;
translate([0,0,body_h+epsilon]) {
mirror([0,0,1]) translate([0,0,-epsilon]) {
difference() {
cylinder(d=pulley_d,h=knob_bore_l,$fn=fnd*pulley_d);
translate([0,0,-1]) difference() {
cylinder(d=bore_d+knob_bore_d_tolerance,h=knob_bore_l+2);
translate([-bore_d/2-1,bore_dd-bore_d/2+knob_bore_d_tolerance/2,-1])
cube([bore_d+2,bore_d/2,knob_bore_l+4]);
}
}
}
difference() {
hull() {
cylinder(d=gearbox_d-2*ch,h=knob_h,$fn=fnd*gearbox_d);
translate([0,0,ch])
cylinder(d=gearbox_d,h=knob_h-2*ch,$fn=fnd*gearbox_d);
}
for(a=[0:360/knob_indents:359]) rotate([0,0,a])
translate([0,gearbox_d/2,-1])
cylinder(d=knob_indent_d,h=knob_h+2,$fn=fnd*knob_indent_d);
translate([0,0,-body_h-epsilon]) knob_label();
}
}
}//knob module
module knob_label() {
if(knob_label) {
ll = len(knob_label);
lsl = gearbox_d-knob_indent_d;
ts = knob_label_size?knob_label_size:min(lsl/ll,gearbox_d/4);
translate([0,0,body_h+epsilon+knob_h-knob_label_thickness])
linear_extrude(height=knob_label_thickness+epsilon,convexity=64)
mirror([left?0:1,0])
text(text=knob_label,size=ts,halign="center",valign="center",font="Arial Black");
}else sphere(d=epsilon); // to avoid makefile breakage
}
module debug() {
difference() {
children();
if(debug) {
// spring tensioner debug cutout
translate([-gearbox_d/2,-longwing,ls_z]) rotate([0,-90,0])
translate([0,-lever_thickness/2-1,-gearbox_d-1])
cube(size=[body_h-ls_z+st_bump+1,lever_thickness/2+1,gearbox_d+2]);
// lever axis debug cutout
translate([mount_d/2,0,-1])
rotate([0,0,-45])
cube(size=[gearbox_d-mount_d,gearbox_d-mount_d,body_h+knob_h+2]);
// idler debug cutout
translate([0,0,ls_z])
place_idler()
rotate([0,0,-45])
translate([0,0,-lever_thickness/2-epsilon])
cube(size=[lsd*sqrt(2)/2+1,lsd*sqrt(2)/2+1,
lever_thickness+2*epsilon]);
// pushfit debug cutout
place_idler()
translate([-idler_d/2+filament_offset,0,ls_z])
cube(size=[gearbox_d/2,gearbox_d/2+pf_h(pf),body_h-ls_z+knob_h+1]);
}//if debug
}//difference
}
mirrorleft()
debug()
if(what=="lever") color("green",0.7) lever();
else if(what=="body") color("yellow",0.7) body();
else if(what=="body.label") color("brown",0.7) body_label();
+ else if(what=="body.scale") color("brown",0.7) body_scale();
else if(what=="knob") color("red",0.7) knob();
else if(what=="knob.label") color("brown",0.7) knob_label();
else if(what=="springpad") color("blue",0.7) springpad();
else if(what=="both") {
color("green",0.7) lever();
color("yellow",0.7) body();
color("brown",0.7) body_label();
+ color("brown",0.7) body_scale();
}else{
color("green",0.7) lever();
color("yellow",0.7) body();
color("brown",0.7) body_label();
+ color("brown",0.7) body_scale();
color("red",0.7) knob();
color("brown",0.7) knob_label();
color("blue",0.7) springpad();
}
}
the_extruder(what="*",left=false,debug=true);