| -rw-r--r-- | another.scad | 23 |
1 files changed, 9 insertions, 14 deletions
diff --git a/another.scad b/another.scad index 4a9fc01..8fd9356 100644 --- a/another.scad +++ b/another.scad @@ -38,42 +38,42 @@ module the_extruder( 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), pf_smooth = true, - pf_guidelen = 3, // the length of ptfe guide before pushfit // empty spaces idler_travel = 3, // how far should idler travel when pressed idler_clearance=1, pulley_d_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=.5, min_z_shell = 4*layer_height, // the very minimal shell thickness along z-axis. + min_xy_shell = 2*extrusion_width, what="lever", // lever|body|knob|springpad|* left=false, vitamins = true, supports = false, bridges = true, tensioner = true, debug = false ) { fnd = 2*PI; fnr = 2*fnd; idler_filament_offset = filament_path_d/2; // -filament_offset; lever_shell = mount_screwhead_h+0.5; @@ -302,44 +302,39 @@ module the_extruder( 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-mount_depth-(bridges?layer_height:-epsilon)]) mirror([0,0,1]) cylinder(d=mount_screw_d+mount_screw_d_tolerance, h=mount_screw_l-mount_depth+1, $fn=fnd*(mount_screw_d+mount_screw_d_tolerance)); translate([0,0,mount_screw_l-mount_depth]) cylinder(d=mount_screwhead_d,h=body_h+1,$fn=fnd*mount_screwhead_d); }//for // pushfit + pf_offset = mount_d/sqrt(2)/2+mount_screw_d; translate([0,0,filament_elevation]) rotate([0,0,45]) translate([pulley_d/2+filament_offset,0,0]) rotate([-90,0,0]) - translate([0,0,mount_d/sqrt(2)/2+mount_screw_d+epsilon]) + translate([0,0,pf_offset]) rotate([0,0,180]) { pushfit(pf); mirror([0,0,1]) { - translate([0,0,-epsilon]) - teardrop(d=filament_guide_d,h=pf_guidelen+epsilon,angle=225); - nl = 3.5; /* TODO: */ - translate([0,0,pf_guidelen-1]) - teardrop(d=filament_path_d,h=nl+2,angle=-225); fh = (filament_guide_d-filament_path_d)/2; - union() { - translate([0,0,pf_guidelen+nl]) - cylinder(d1=filament_path_d,d2=filament_guide_d,h=fh,$fn=fnd*filament_guide_d); - translate([0,0,pf_guidelen+nl+fh-epsilon]) - teardrop(d=filament_guide_d,h=gearbox_d/2,angle=225); - } - } + fo = pf_offset-(idler_d+idler_clearance)/2-fh; + translate([0,0,-1]) teardrop(d=filament_guide_d,h=fo-extrusion_width+1,angle=225); + translate([0,0,-1]) teardrop(d=filament_path_d,h=gearbox_d/2+1,angle=-225); + translate([0,0,fo+epsilon]) + cylinder(d1=filament_path_d,d2=filament_guide_d,h=fh,$fn=fnd*filament_guide_d); + }//mirror }//rotate translate rotate translate rotate translate // pulley cylinder(d=pulley_d+pulley_d_clearance,h=body_h+1,$fn=fnd*(pulley_d+pulley_d_clearance)); // leverspace hull() for(x=[0,gearbox_d]) rotate([0,0,45]) translate([x,0,ls_z-ls_h/2]) cylinder(d=idler_d+idler_clearance,h=ls_h,$fn=fnd*(idler_d+idler_clearance)); // idler clearance a=cos(45)*(pulley_d+idler_d)/2; b=mount_d/2-a; |