| -rw-r--r-- | mixer-embedded.scad | 10 | ||||
| -rw-r--r-- | mixer-threaded.scad | 3 | ||||
| -rw-r--r-- | mixer.scad | 40 |
3 files changed, 44 insertions, 9 deletions
diff --git a/mixer-embedded.scad b/mixer-embedded.scad new file mode 100644 index 0000000..397572f --- a/dev/null +++ b/mixer-embedded.scad @@ -0,0 +1,10 @@ +extrusion_width=.4; + +use <mixer.scad>; + +the_mixer( + pushfit_type="embedded", + pushfit_d = 12, + pushfit_h = 7, + interpushfit = extrusion_width +); diff --git a/mixer-threaded.scad b/mixer-threaded.scad new file mode 100644 index 0000000..ff3c0aa --- a/dev/null +++ b/mixer-threaded.scad @@ -0,0 +1,3 @@ +use <mixer.scad>; + +the_mixer(); @@ -1,88 +1,110 @@ -layer_height=0.2; extrusion_width=0.4; +layer_height=0.2; extrusion_width=0.45; epsilon=0.01; $fs=0.125; draft=true; use <threads.scad>; module pushfit_thread(h=10) { thr = 3/8 + .5/25.4; slit = 25.4*thr/2 + 0.2; if(draft) cylinder(d=thr*25.4,h=h); else english_thread(diameter=thr,threads_per_inch=28,length=h/25.4,internal=true); translate([-2,-slit,0]) cube([4,2*slit,h]); } module the_mixer( pushfit_d = 10, pushfit_h = 10, + pushfit_type = "threaded", // threaded|embedded + pushfit_ring_h = 4.7, // height of embedded pushfit ring + pushfit_insert_d = 8, // diameter of pushfit insert legs hole liner_d = 4, liner_id = 2, filament_d = 1.75, join_angle = 30, - interpushfit = 2*extrusion_width, // space between two pushfit's threads - pushfit_s = 2, // shell around pushfit threads + interpushfit = 2*extrusion_width, // space between two pushfit holes + pushfit_s = 2, // shell around pushfit holes output_l = 4, // length of output after before pushfit outer_r = 3, // outer radius liner_d_tolerance = .2, ) { module liner(l,in) { inh=ld-liner_id; union() { translate([0,0,inh]) cylinder(d=ld,h=l-inh,$fn=ld*PI*2); translate([0,0,-epsilon]) cylinder(d1=ld+epsilon,d2=liner_id-epsilon,h=inh+2*epsilon); } } + module pushfit() { + if(pushfit_type=="threaded") { + pushfit_thread(h=pushfit_h); + }else if(pushfit_type=="embedded") { + translate([0,0,pushfit_h-pushfit_ring_h]) + cylinder(d=pushfit_d,h=pushfit_ring_h,$fn=pushfit_d*PI*2); + cylinder(d=pushfit_insert_d,h=pushfit_h,$fn=pushfit_insert_d*PI*2); + } + } ld = liner_d+liner_d_tolerance; linero = ld/2/tan(join_angle/2); // liner offset pfrx = interpushfit/2/cos(join_angle/2); // radial margin pfR = pushfit_d/2+pfrx; // radius of pushfit with margin - pfo = pfR/tan(join_angle/2); // pushfit thread ofset + pfoo = pushfit_type=="threaded" ? 0 : (pushfit_h-pushfit_ring_h); // offset of pushfit offset + pfo = pfR/tan(join_angle/2)-pfoo; // pushfit thread ofset h = pushfit_d+pushfit_s*2; difference() { hull() { for(s=[-1,1]) { rotate([0,0,s*join_angle/2]) for(ss=[-1,1]) translate([ss*pushfit_d/2,pfo+pushfit_h-outer_r-epsilon]) cylinder(r=outer_r,h=h,center=true,$fn=outer_r*PI*4); translate([s*pushfit_d/2,-output_l-pushfit_h+outer_r+epsilon,0]) cylinder(r=outer_r,h=h,center=true,$fn=outer_r*PI*4); } } for(s=[-1,1]) rotate([0,0,s*join_angle/2]) { translate([0,linero,0]) rotate([-90,0,0]) liner(l=pfo-linero+1,in="bottom"); //cylinder(d=ld,h=pfo-linero+1,$fn=ld*PI*4); translate([0,pfo,0]) rotate([-90,0,0]) - pushfit_thread(h=pushfit_h); + pushfit(); } rotate([90,0,0]) { liner(l=output_l+1,in="top"); //cylinder(d=ld,h=output_l+1,$fn=ld*PI*4); translate([0,0,output_l]) - pushfit_thread(h=pushfit_h); + pushfit(); } hull() { for(s=[-1,1]) rotate([0,0,s*join_angle/2]) { rotate([-90,0,0]) translate([0,0,linero]) cylinder(d=ld,h=epsilon,$fn=ld*PI*4); } rotate([90,0,0]) cylinder(d=ld,h=epsilon,$fn=ld*PI*4); } } } -if(false) { +module this() { + the_mixer( + pushfit_type="embedded", + pushfit_d = 12, + pushfit_h = 7, + interpushfit = extrusion_width + ); +} + +if(!false) { difference() { - the_mixer(); + this(); cylinder(d=100,h=100); } }else - the_mixer(); + this(); |