| -rw-r--r-- | another.scad | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/another.scad b/another.scad index 4842e1b..c24d13a 100644 --- a/another.scad +++ b/another.scad @@ -291,200 +291,201 @@ module the_extruder( }//for // pushfit translate([0,0,filament_elevation]) rotate([0,0,45]) translate([pulley_d/2+filament_offset,0,0]) rotate([-90,0,0]) translate([0,0,pf_offset]) rotate([0,0,180]) { pushfit(pf); mirror([0,0,1]) { fh = 1.5* (filament_guide_d-filament_path_d)/2; fo = pf_offset -filament_path_d /*(idler_d+idler_clearance)/2*/-fh; translate([0,0,-1]) teardrop(d=filament_guide_d,h=fo/2,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,$fn=fnd*filament_guide_d); }//mirror }//rotate translate rotate translate rotate translate // pulley cylinder(d=pulley_d+pulley_small_d_clearance,h=body_h+1,$fn=fnd*(pulley_d+pulley_d_clearance)); cylinder(d=pulley_d+pulley_d_clearance,ls_z-max(idler_h,filament_guide_d)/2,$fn=fnd*(pulley_d+pulley_d_clearance)); translate([0,0,ls_z-ls_h/2]) { // idler travel translate([mount_d/2,0,0]) rotate([0,0,45]) rotate_extrude(angle=90,$fn=fnr*(shortwing+(idler_d+idler_clearance)/2)) square([shortwing+(idler_d+idler_clearance)/2,ls_h]); // idler itself place_idler() cylinder(d=idler_d+idler_clearance,h=ls_h,$fn=fnd*(idler_d+idler_clearance)); // lever space rotate([0,0,45]) rotate_extrude(angle=-135+max(atan(2*fsw/gearbox_d-1),atan(gearbox_d/mount_d-1))) square([gearbox_d/2+1,ls_h]); } // back side cutout // XXX: this is somewhat ugly and potentially bugged, // but I want to sleep. a0_ = atan( (pf_offset+pf_h(pf)+gearbox_d/2) / ( pulley_d/2+filament_offset- (pf_d(pf)+2*pf_shell)/2/cos(30) ) ); a0 = -135 + ( (a0_>0) ? a0_ : 180+a0_ ); a1 = atan((longwing-lever_thickness/2)/(gearbox_d/2)); translate([0,0,ls_z]) difference() { rotate([0,0,-180+a0]) rotate_extrude(angle=a1-a0) translate([0,-ls_h/2]) square([sqrt(pow(gearbox_d/2,2)+pow(longwing-lever_thickness/2,2))+1, ls_h]); translate([-mount_d/2,0,0]) cylinder(d=gearbox_d-mount_d,h=ls_h+2,center=true,$fn=fnd*(gearbox_d-mount_d)); }//difference translate // spring tensioner translate([-gearbox_d/2,-longwing,ls_z]) rotate([0,-90,0]) { 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, $fn=fnd*bigd); translate([0,-(st_split_w+st_split_w_tolerance)/2,0]) hull() { cube(size=[body_h-ls_z-st_w+st_split_w_tolerance,st_split_w+st_split_w_tolerance,fsw+1]); translate([0,0,st_w+1]) cube(size=[body_h-ls_z+1,st_split_w+st_split_w_tolerance,fsw+1]); } }//translate translate([0,0,st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell+hf-epsilon]) cylinder(d=bigd,h=fsw+1,$fn=fnd*bigd); }//mirror }//translate // label body_label(); // scale body_scale(); }//difference }//body module module body_scale() { scale_thickness = 2*layer_height; nscales = 5; x1 = -gearbox_d/2+fsw-st_h+st_w+st_bump*2-st_bump_tip/2; x0 = -gearbox_d/2+st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell+st_split_w+st_split_w_tolerance+st_bump_tip/2; - w0 = st_split_w+st_split_w_tolerance+2*(extrusion_width+2*extrusion_width); + w00 = st_split_w+2*(st_bump-st_bump_tip); + w0 = w00+2*2*extrusion_width; w1 = 2*(longwing-gearbox_d/2-extrusion_width); translate([0,-longwing,body_h-scale_thickness]) difference() { for(x=[x0:(x1-x0)/(nscales-1):x1]) let(w=w0+(w1-w0)*(x-x0)/(x1-x0)) translate([x-st_bump_tip/2,-w/2,0]) cube(size=[st_bump_tip,w,scale_thickness+epsilon]); - let(w=st_split_w+st_split_w_tolerance+extrusion_width) + let(w=w00) translate([-gearbox_d/2,-w/2,-1]) cube(size=[fsw,w,scale_thickness+2]); } } module body_label() { if(body_label) { label=body_label; label_thickness=body_label_thickness; label_len = len(label); labelspace = [gearbox_d/2-mount_screwhead_d/2-min_xy_shell,longwing-(mount_screwhead_d-st_split_w-st_split_w_tolerance)/2-2*min_xy_shell]; translate([0,0,body_h-label_thickness]) linear_extrude(height=label_thickness+epsilon,convexity=64) translate([-mount_screwhead_d/2-min_xy_shell-labelspace.x/2,-longwing+(st_split_w+st_split_w_tolerance)/2+min_xy_shell+labelspace.y/2]) mirror([left?0:1,0]) text(text=label,size=labelspace.x/label_len,halign="center",valign="center",font="Arial Black"); }else sphere(d=epsilon); // to avoid makefile breakage } st_bump = 4*extrusion_width; st_bump_tip = 2*extrusion_width; st_smalld = st_screw_d+st_screw_d_tolerance+min_xy_shell; st_bigd = spring_d+spring_d_clearance/2; st_hf = (st_bigd-st_smalld)/2; st_h = max(st_hf*3,fsw-st_screw_l+st_hf); st_w = sp_ch; module springpad() { smalld=st_smalld; bigd = st_bigd; hf = st_hf; h = st_h; translate([-gearbox_d/2+fsw-h,-longwing,filament_elevation]) rotate([0,90,0]) difference() { union() { cylinder(d1=smalld,d2=bigd,h=hf,$fn=fnd*bigd); translate([0,0,hf-epsilon]) cylinder(d=bigd,h=h-hf,$fn=fnd*bigd); translate([0,0,h]) sphere(d=spring_d*3/4,$fn=fnd*spring_d*3/4); l = body_h-ls_z; w = st_w; translate([0,-st_split_w/2,0]) mirror([1,0,0]) { hull() { translate([0,0,w+st_bump]) cube(size=[l+st_bump,st_split_w,w]); cube(size=[l-w,st_split_w,2*w]); } translate([l,0,w+st_bump]) hull() { cube(size=[st_split_w,st_split_w,st_bump]); translate([0,-st_bump+st_bump_tip,st_bump]) mirror([0,0,1]) cube(size=[st_split_w,st_split_w+2*(st_bump-st_bump_tip),st_bump_tip]); } } } translate([0,0,-epsilon]) cylinder(d=st_screw_d+st_screw_d_tolerance, h=min(st_screw_l,fsw-hf)-fsw+h+2*epsilon,$fn=fnd*(st_screw_d+st_screw_d_tolerance)); } } module knob() { ch = knob_indent_d/2; knob_bore_l = body_h-protrusion_h-pulley_elevation-pulley_h-knob_v_clearance; translate([0,0,body_h+epsilon]) { mirror([0,0,1]) translate([0,0,-epsilon]) { difference() { cylinder(d=pulley_d,h=knob_bore_l,$fn=fnd*pulley_d); translate([0,0,-1]) difference() { cylinder(d=bore_d+knob_bore_d_tolerance,h=knob_bore_l+2); translate([-bore_d/2-1,bore_dd-bore_d/2+knob_bore_d_tolerance/2,-1]) cube([bore_d+2,bore_d/2,knob_bore_l+4]); } } } difference() { hull() { cylinder(d=gearbox_d-2*ch,h=knob_h,$fn=fnd*gearbox_d); translate([0,0,ch]) cylinder(d=gearbox_d,h=knob_h-2*ch,$fn=fnd*gearbox_d); } for(a=[0:360/knob_indents:359]) rotate([0,0,a]) translate([0,gearbox_d/2,-1]) cylinder(d=knob_indent_d,h=knob_h+2,$fn=fnd*knob_indent_d); translate([0,0,-body_h-epsilon]) knob_label(); } } }//knob module module knob_label() { if(knob_label) { ll = len(knob_label); lsl = gearbox_d-knob_indent_d; ts = knob_label_size?knob_label_size:min(lsl/ll,gearbox_d/4); translate([0,0,body_h+epsilon+knob_h-knob_label_thickness]) linear_extrude(height=knob_label_thickness+epsilon,convexity=64) mirror([left?0:1,0]) text(text=knob_label,size=ts,halign="center",valign="center",font="Arial Black"); }else sphere(d=epsilon); // to avoid makefile breakage |