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-rw-r--r--another.scad55
1 files changed, 49 insertions, 6 deletions
diff --git a/another.scad b/another.scad
index 2be24e4..844dc3b 100644
--- a/another.scad
+++ b/another.scad
@@ -31,6 +31,10 @@ module the_extruder(
knob_bore_l = 4,
knob_indent_d = 4,
knob_indents = 12,
+ // spring tensioner
+ st_nut_d = 9, st_nut_h = 4,
+ st_screw_d = 5,
+ st_shell = 4*extrusion_width,
// screw it
mount_screw_d = 3.1, mount_screw_l = 20,
@@ -50,10 +54,12 @@ module the_extruder(
idler_v_tolerance=.5,
knob_bore_d_tolerance=.6,
- what="lever",
+ what="lever", // lever|body|knob|springpad|*
left=false,
vitamins = true,
- supports = false
+ supports = false,
+ tensioner = true,
+ debug = false
) {
lever_shell = mount_screwhead_h+0.5;
lever_thickness=max(spring_d+layer_height*8,idler_h+idler_v_tolerance+2*lever_shell);
@@ -197,8 +203,25 @@ module the_extruder(
mirror([0,1,0]) cube(size=[fsw,longwing-hhh+lever_thickness/sqrt(2),hhh+lever_thickness/2]);
}
}
- translate([0,-longwing,ls_z]) rotate([0,-90,0])
- finger_indent(d=lever_thickness-1,r=15);
+ translate([0,-longwing,ls_z]) rotate([0,-90,0]) {
+ if(!tensioner) finger_indent(d=lever_thickness-1,r=15); else {
+ if(debug) translate([0,-gearbox_d,-gearbox_d]) cube(size=[body_h/2+1,gearbox_d,gearbox_d+2]);
+ mirror([0,0,1]) {
+ translate([0,0,st_shell])
+ hull() for(o=[0,spring_d]) translate([0,-o,0])
+ rotate([0,0,30])
+ cylinder(d=st_nut_d,h=st_nut_h,$fn=6);
+ translate([0,0,-1]) cylinder(d=st_screw_d,h=fsw+2,$fn=st_screw_d*PI*2);
+ bigd = spring_d+spring_d_clearance;
+ hf = (bigd-st_screw_d)/2;
+ translate([0,0,st_shell+st_nut_h+st_shell-epsilon])
+ cylinder(d1=st_screw_d,d2=bigd,
+ h=hf+epsilon, $fn=bigd*PI*2 );
+ translate([0,0,st_shell+st_nut_h+st_shell+hf-epsilon])
+ cylinder(d=bigd,h=fsw+1,$fn=bigd*PI*2);
+ }
+ }
+ }
} // translate
// pushfit bracket
@@ -260,7 +283,7 @@ module the_extruder(
cube(size=[gearbox_d,gearbox_d/2+1,lever_thickness+lever_v_clearance]);
}
//translate([-mount_d/2,-longwing,filament_elevation])
- translate([mount_d/2,-longwing,filament_elevation])
+ if(!tensioner) translate([mount_d/2,-longwing,filament_elevation])
rotate([0,-90,0]) difference() {
cylinder(d=spring_d+spring_d_clearance,h=spring_lc+spring_dl,$fn=PI*spring_d);
translate([0,0,spring_lc+spring_dl]) sphere(d=spring_d*3/4,$fn=PI*spring_d);
@@ -295,6 +318,21 @@ module the_extruder(
}//body module
+ module springpad() {
+ smalld=st_screw_d+extrusion_width;
+ bigd = spring_d+spring_d_clearance/2;
+ hf = (bigd-smalld)/2;
+ translate([-gearbox_d/2+st_shell+st_nut_h+st_shell+smalld,-longwing,filament_elevation])
+ rotate([0,90,0]) difference() {
+ union() {
+ cylinder(d1=smalld,d2=bigd,h=hf,$fn=bigd*PI*2);
+ translate([0,0,hf-epsilon])
+ cylinder(d=bigd,h=hf*2,$fn=bigd*PI*2);
+ }
+ cylinder(d=st_screw_d,h=2*hf,$fn=st_screw_d*PI*2);
+ }
+ }
+
module knob() {
ch = knob_indent_d/2;
translate([0,0,body_h+epsilon]) {
@@ -327,10 +365,15 @@ module the_extruder(
if(what=="lever") color("green",0.7) lever();
else if(what=="body") color("yellow",0.7) body();
else if(what=="knob") color("red",0.7) knob();
- else if(what=="both" || what=="*") {
+ else if(what=="springpad") color("blue",0.7) springpad();
+ else if(what=="both") {
+ color("green",0.7) lever();
+ color("yellow",0.7) body();
+ }else{
color("green",0.7) lever();
color("yellow",0.7) body();
color("red",0.7) knob();
+ color("blue",0.7) springpad();
}
}