2022-07-08 15:30:58 +02:00
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/* mount options */
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wt = 2; // wall thickness (min 5mm for m2 inserts)
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bpt = 7; // thickness of base plate
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rd = 4 ; //inner radius of fan duct bend
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wo = 25; // width of opening
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zofsmnt = 5; // vertical distance between bottom of fan and bottom of base plate
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xhbl = 22; // distance in x from fan to heat block
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yhbl = -15.5; // distance in y from fan center to center of nozzle (negative to base plate)
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zhbl = 27.2; // distance in z from fan to heat block underside
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zbed = 6.5; // how far does the nozzle protrude out of the heat block?
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xhbln = 11.5; // distance from heat block to nozzle center
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2022-07-09 12:19:41 +02:00
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zgap = 2.5; // gap left to bed/part
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xgap = 4; // gap from duct to heat block
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2022-07-08 15:30:58 +02:00
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/* fan size */
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wtfm = 5; // wall thickness fan mount
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lf = 40; // length
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tf = 10; // thickness
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lhf = 34.8; // distance mounting holes
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lof = 28; // length of outlet
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wof = 8; // width of outlet
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rc = 2; // radius corners
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$fn= 100;
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/* calculations */
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ho = zbed-zgap-wt; // height of opening in duct tip
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a = atan(zbed/(xhbln+xgap));
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b = 90 - a;
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vtb = sin(b) * rd; // vertical travel achieved in bend
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htb = rd - (cos(b) * rd); // horizontal travel achieved in bend
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xad = xhbl+((tf-wof)/2)-xgap-htb-wt;
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zad = xad*tan(a);
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lad = xad/cos(a);
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lav = zhbl-vtb-zad;
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xto = (2*wt)+wof > tf ? (2*wt)+wof : tf;
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xo = xto>tf? wt : (tf-wof)/2;
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xm = xto>tf?xto -(tf-wof)/2-0.01:tf-0.01;
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y = lf+bpt;//+ bpt;
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yo = (lf-lof)/2;
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yb = lf/2-yhbl+wo/2>y-wt? y-wt-wo:lf/2-yhbl-wo/2 < wt? wt:lf/2-yhbl-wo/2; //(y-wo)/2;
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yba = lf/2-yhbl+wo/2>y-wt? y-2*wt-wo:lf/2-yhbl-wo/2 < wt? 0:lf/2-yhbl-wo/2-wt; //(y-wo)/2;
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ybo = (lf-lof)/2-wt;
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posxad = htb+xto;
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poszad = -zhbl+zad;
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module through(l=7, lh=2, lt=1, lb=1){
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union(){
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2022-07-09 14:50:26 +02:00
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translate([0,0,l-lh])cylinder(h=lh+lt, d=4.2);
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2022-07-08 15:30:58 +02:00
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translate([0,0,-lb])cylinder(h=l+lh+lb, d=2.5);
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}
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}
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module m3 (h=8, lt=1){
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//translate([0,0,-lt])cylinder(h, d=2.5); // tapped M3
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translate([0,0,-lt])cylinder(h, d=4); // rutex insert
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}
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module m2 (h=8, lt=1){
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translate([0,0,-lt])cylinder(h, d=1.5); // tapped M3
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//translate([0,0,-lt])cylinder(h, d=3.2); // rutex insert
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}
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module mount(){
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translate([4,4,-12])difference(){
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hull(){
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translate([0,0,6])cylinder(h=6, d=8);
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translate([4,-4,0])cube([0.01,8,12]);
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}
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translate([0,0,12])mirror([0,0,1])through(l=10,lb=1,lt=1,lh=7);
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}
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}
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difference(){
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union(){
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translate([posxad,0,poszad])hull(){
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rotate([0,a,0])translate([-0.01,ybo,-xto])cube([0.01,y-ybo,xto]);
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rotate([0,a,0])translate([-0.01+lad,yba,-1*ho-2*wt])cube([0.01,y-yba,ho+2*wt]);
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}
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translate([xto+rd,ybo,-lav])rotate([-90,a+90,0])rotate_extrude(angle=b){
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translate([rd,0])square([xto,y-ybo]);
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}
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hull(){
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translate([0,0,-2*wtfm])cube([xto,y,2*wtfm]);
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translate([0,ybo,-lav])cube([xto,y-ybo,0.01]);
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//translate([0,0,-lav])cube([xto,y,lav]);
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}
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translate([xm,0,-2*wtfm])hull(){
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cube([0.01,lf-0.4,wtfm*2]);
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translate([wtfm,0,wtfm])cube([0.01,lf-0.4,wtfm]);
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}
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}
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translate([xo,yo, -lav-0.01])cube([wof,lof,lav+1]);
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translate([xto+rd,yo,-lav])rotate([-90,a+90,0])rotate_extrude(angle=b){
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translate([rd+xo,0])square([wof,lof]);
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}
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translate([posxad,0,poszad])hull(){
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rotate([0,a,0])translate([-0.01,yo,-wof-xo])cube([0.01,lof,wof]);
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rotate([0,a,0])translate([lad,yb,-ho-wt])cube([0.01,wo,ho]);
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}
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for(y=[8,lf-8])translate([xm+wtfm/2,y,0])mirror([0,0,1])through(l=wtfm,lt=wtfm);
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translate([xto/2,y-bpt/2,-zofsmnt])mirror([0,0,1])through(l=wtfm,lt=zhbl);
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translate([-1,y-bpt-0.4,-zofsmnt])cube([xto*2,bpt+1,zofsmnt+1]);
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// cut view
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2022-07-09 12:19:41 +02:00
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2022-07-08 15:30:58 +02:00
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//translate([-1,-1,-zhbl-zbed])cube([xto+xhbl+2,lf/2,zhbl+zbed+5]);
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2022-07-09 12:19:41 +02:00
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}
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