| -rw-r--r-- | another.scad | 55 |
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(); } } |