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-rw-r--r--another.scad42
1 files changed, 17 insertions, 25 deletions
diff --git a/another.scad b/another.scad
index 74b7ffa..78d4320 100644
--- a/another.scad
+++ b/another.scad
@@ -49,12 +49,13 @@ module the_extruder(
pf_smooth = true,
// empty spaces
idler_travel = 3, // how far should idler travel when pressed
idler_clearance=1,
pulley_d_clearance=2,
+ pulley_small_d_clearance=0.5,
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,
@@ -324,46 +325,37 @@ module the_extruder(
rotate([-90,0,0])
translate([0,0,pf_offset])
rotate([0,0,180]) {
pushfit(pf);
mirror([0,0,1]) {
fh = 1.5* (filament_guide_d-filament_path_d)/2;
- fo = pf_offset-(idler_d+idler_clearance)/2-fh;
- translate([0,0,-1]) teardrop(d=filament_guide_d,h=fo-extrusion_width+1,angle=225);
+ fo = pf_offset -filament_path_d /*(idler_d+idler_clearance)/2*/-fh;
+ translate([0,0,-1]) teardrop(d=filament_guide_d,h=fo/2,angle=225);
translate([0,0,-1]) teardrop(d=filament_path_d,h=gearbox_d/2+1,angle=-225);
translate([0,0,fo+epsilon])
cylinder(d1=filament_path_d,d2=filament_guide_d,h=fh,$fn=fnd*filament_guide_d);
}//mirror
}//rotate translate rotate translate rotate translate
// pulley
- cylinder(d=pulley_d+pulley_d_clearance,h=body_h+1,$fn=fnd*(pulley_d+pulley_d_clearance));
+ cylinder(d=pulley_d+pulley_small_d_clearance,h=body_h+1,$fn=fnd*(pulley_d+pulley_d_clearance));
+ cylinder(d=pulley_d+pulley_d_clearance,ls_z-max(idler_h,filament_guide_d)/2,$fn=fnd*(pulley_d+pulley_d_clearance));
- // leverspace
- hull() for(x=[0,gearbox_d])
+ translate([0,0,ls_z-ls_h/2]) {
+ // idler travel
+ translate([mount_d/2,0,0])
rotate([0,0,45])
- translate([x,0,ls_z-ls_h/2])
+ rotate_extrude(angle=90,$fn=fnr*(shortwing+(idler_d+idler_clearance)/2))
+ square([shortwing+(idler_d+idler_clearance)/2,ls_h]);
+ // idler itself
+ place_idler()
cylinder(d=idler_d+idler_clearance,h=ls_h,$fn=fnd*(idler_d+idler_clearance));
-
- // idler clearance
- a=cos(45)*(pulley_d+idler_d)/2;
- b=mount_d/2-a;
- x=sqrt(pow(a,2)+pow(b,2));
- translate([mount_d/2,0,ls_z])
- intersection() {
- r = x+idler_d/2+idler_clearance;
- cylinder(r=r,h=ls_h,center=true);
- translate([-r-1,0,-ls_h/2-1]) cube(size=[2*r+2,r+1,ls_h+2]);
- }
-
- rotate([0,0,-45])
- translate([0,0,ls_z-ls_h/2])
- cube(size=[gearbox_d,gearbox_d,lever_thickness+lever_v_clearance]);
- translate([0,0,ls_z-ls_h/2]) {
- translate([mount_screwhead_d/2,0,0])
- mirror([0,1,0])
- cube(size=[gearbox_d,gearbox_d/2+1,lever_thickness+lever_v_clearance]);
+ // lever space
+ echo(atan(1-2*fsw/gearbox_d));
+ rotate([0,0,45])
+ rotate_extrude(angle=-135+max(atan(2*fsw/gearbox_d-1),atan(gearbox_d/mount_d-1)))
+ square([gearbox_d/2+1,ls_h]);
}
// back side cutout
// XXX: this is somewhat ugly and potentially bugged,
// but I want to sleep.
a0_ = atan(