| -rw-r--r-- | another.scad | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/another.scad b/another.scad index 342d70c..2ea5417 100644 --- a/another.scad +++ b/another.scad @@ -22,48 +22,49 @@ module the_extruder( idler_d = 9.5, idler_h = 4, idler_id = 3, // idler dimensions: outer and inner diameters and height // spring properties spring_d = 10, spring_lc = 9.6, // spring diameter and compressed length // filament path properties filament_d = 1.75, filament_path_d = 2, filament_guide_d = 4, // PTFE filament guide diameter // knob properties knob_h = 10, 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_thickshell = 8*extrusion_width, st_thinshell = 4*extrusion_width, // screw it mount_screw_d = 3.1, mount_screw_l = 20, mount_screwhead_d=6, mount_screwhead_h=3, idler_screw_d = 3, idler_screwhead_d=6, idler_screwhead_h=3, pf = pushfit_embeddest, + pf_shell = max(3*layer_height,3*extrusion_width), // empty spaces idler_travel = 3, // how far should idler travel when pressed idler_clearance=1, pulley_clearance=2, 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, knob_bore_d_tolerance=.6, st_nut_h_tolerance=.2, st_nut_d_tolerance=.2,/* TODO: make it st_nut_w_tolerance */ st_screw_d_tolerance=.3, what="lever", // lever|body|knob|springpad|* left=false, vitamins = true, supports = false, bridges = true, tensioner = true, debug = false ) { fnd = 2*PI; fnr = 2*fnd; @@ -223,70 +224,83 @@ module the_extruder( } } 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, $fn=fnd*bigd); translate([0,0,st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell+hf-epsilon]) cylinder(d=bigd,h=fsw+1,$fn=fnd*bigd); } } } } // translate // pushfit bracket translate([0,0,filament_elevation]) - rotate([0,0,45]) translate([pulley_d/2,0,0]) + rotate([0,0,45]) translate([(pulley_d-filament_path_d)/2,0,0]) rotate([-90,0,0]) - translate([0,0,mount_d/sqrt(2)/2+mount_screw_d-gearbox_d/2/*TODO:*/]) - cylinder(r=min(body_h-filament_elevation,filament_elevation)/sin(60)-epsilon,h=pf_h(pf)+gearbox_d/2/*TODO:*/,$fn=6); + translate([0,0,mount_d/sqrt(2)/2+mount_screw_d-gearbox_d/2/*TODO:*/]) { + pfb2a = pf_d(pf)+2*pf_shell; pfba = pfb2a/2; + pfbd = pfb2a/cos(30); + pfbs = pfb2a*tan(30); + pfbl = pf_h(pf)+gearbox_d/2/*TODO:*/; + cylinder(d=pfbd,h=pfbl,$fn=6); + translate([-pfbs/2,0,0]) { + hull() { + translate([0,-pfba,0]) cube(size=[pfbs,pfb2a,pfbl]); + cube(size=[pfbs,filament_elevation,pfbl-filament_elevation+pfba]); + mirror([0,1,0]) + cube(size=[pfbs,body_h-filament_elevation,pfbl-body_h+filament_elevation+pfba]); + } + } + } }//union (first child of difference) // protrusion translate([0,0,-1]) cylinder(d=protrusion_d+protrusion_tolerance_h,h=protrusion_h+protrusion_tolerance_v+1,$fn=fnd*(protrusion_d+protrusion_tolerance_h)); // mount screw holes for(zr=[0:90:359]) rotate([0,0,zr]) translate([mount_d/2,0,0]) { translate([0,0,mount_screw_l-mounthole_depth/2-(bridges?layer_height:-epsilon)]) mirror([0,0,1]) cylinder(d=mount_screw_d+mount_screw_d_tolerance, h=mount_screw_l-mounthole_depth/2+1, $fn=fnd*(mount_screw_d+mount_screw_d_tolerance)); translate([0,0,mount_screw_l-mounthole_depth/2]) cylinder(d=mount_screwhead_d,h=body_h+1,$fn=fnd*mount_screwhead_d); }//for // pushfit translate([0,0,filament_elevation]) - rotate([0,0,45]) translate([pulley_d/2,0,0]) + rotate([0,0,45]) translate([(pulley_d-filament_path_d)/2,0,0]) rotate([-90,0,0]) translate([0,0,mount_d/sqrt(2)/2+mount_screw_d+epsilon]) rotate([0,0,180]) { pushfit(pf); cylinder(d=filament_guide_d,h=gearbox_d,center=true,$fn=fnd*filament_guide_d); translate([0,-filament_guide_d/2/sqrt(2),0]) rotate([0,0,45]) cube(size=[filament_guide_d/2,filament_guide_d/2,gearbox_d],center=true); }//rotate translate rotate translate rotate translate // pulley cylinder(d=pulley_d+pulley_clearance,h=body_h+1,$fn=fnd*(pulley_d+pulley_clearance)); // leverspace hull() for(x=[0,gearbox_d]) rotate([0,0,45]) translate([x,0,ls_z-ls_h/2]) 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; |