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-rw-r--r--another.scad55
1 files changed, 27 insertions, 28 deletions
diff --git a/another.scad b/another.scad
index 78d4320..b752f30 100644
--- a/another.scad
+++ b/another.scad
@@ -81,7 +81,7 @@ module the_extruder(
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;
- longwing=gearbox_d/2+spring_d/2+lsd/2;
+ longwing=(mount_d+mount_screw_d+mount_screw_d_tolerance+spring_d+spring_d_clearance)/2+extrusion_width;
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;
@@ -235,9 +235,8 @@ module the_extruder(
difference() {
union() {
cylinder(d=gearbox_d,h=body_h,$fn=fnd*gearbox_d);
- translate([-gearbox_d/2,0,0]) difference() {
- union() {
- hull() {
+ // spring tensioner part
+ translate([-gearbox_d/2,0,0]) hull() {
translate([0,-longwing,ls_z])
rotate([0,90,0])
cylinder(d=lever_thickness,h=fsw,$fn=fnd*lever_thickness);
@@ -247,30 +246,7 @@ module the_extruder(
hhh=ls_z;
translate([0,0,0])
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]) {
- if(!tensioner) finger_indent(d=lever_thickness-1,r=15); else {
- 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, $fn=fnd*bigd);
- translate([0,-(st_thinshell+st_split_w_tolerance)/2,0])
- cube(size=[body_h-ls_z+1,st_thinshell+st_split_w_tolerance,fsw+1]);
- }
- translate([0,0,st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell+hf-epsilon])
- cylinder(d=bigd,h=fsw+1,$fn=fnd*bigd);
- }
- }
- }
- } // translate
+ }//hull translate
// pushfit bracket
translate([0,0,filament_elevation])
@@ -386,6 +362,29 @@ module the_extruder(
translate([0,0,spring_lc+spring_dl]) sphere(d=spring_d*3/4,$fn=fnd*spring_d*3/4);
}
+ // spring tensioner
+ translate([-gearbox_d/2,-longwing,ls_z]) rotate([0,-90,0]) {
+ if(!tensioner) finger_indent(d=lever_thickness-1,r=15); else {
+ mirror([0,0,1]) {
+ translate([0,0,st_thickshell])
+ hull() for(o=[0,spring_d]) translate([0,-o,0])
+ rotate([0,0,30])
+ cylinder(d=st_nut_d+st_nut_d_tolerance,h=st_nut_h+st_nut_h_tolerance,$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, $fn=fnd*bigd);
+ translate([0,-(st_thinshell+st_split_w_tolerance)/2,0])
+ cube(size=[body_h-ls_z+1,st_thinshell+st_split_w_tolerance,fsw+1]);
+ }
+ translate([0,0,st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell+hf-epsilon])
+ cylinder(d=bigd,h=fsw+1,$fn=fnd*bigd);
+ }
+ }
+ }
+
}//difference
if(supports) intersection() {