160 lines
4.2 KiB
OpenSCAD
160 lines
4.2 KiB
OpenSCAD
//------------------------------------------------------------
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// Huxley vertex feet for higher z and more clearance
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//
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// http://www.thingiverse.com/wardwouts
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//
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//
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//------------------------------------------------------------
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// Inspired by:
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// http://www.thingiverse.com/thing:19160 -- eMaker Huxley Higher Z (burtyb)
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// http://www.thingiverse.com/thing:28045 -- eMaker Huxley Extended Vertex Parts (Snille)
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// Length measured between the bottom feet (207 is default for emaker huxley)
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baserodlength=207;
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// Length measure between top vertex and feet (207 is default for emaker huxley)
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siderodlength=280;
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partstyle = "top"; // [top,bottom]
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// size of the M6 holes
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M6 = 6.5;
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// thickness of the part
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thickness = 14;
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// distance between tear and hole
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teardist = 2;
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// 80 for pretty curves; 16 for quick ones
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FN=80;
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zaxisliftrod = sqrt(pow(siderodlength,2) - pow((baserodlength/2),2));
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echo ("===========================================");
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echo ("Lengths measured between the parts");
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echo (str("Base rod length: ", baserodlength));
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echo (str("Side rod length: ", siderodlength));
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echo ("===========================================");
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echo ("Shopping list (approximate size):");
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echo (str("2 x ", baserodlength + 50 ,"mm M6 threaded bar for the base rods"));
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echo (str("4 x ", siderodlength + 50 ,"mm M6 threaded bar for the side rods"));
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echo (str("2 x ", round(zaxisliftrod + 72) ,"mm x 6mm smooth bar for the z-axis"));
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echo (str("2 x ", round(zaxisliftrod + 22) ,"mm M5 threaded bar smooth bar for the z-axis"));
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echo ("===========================================");
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toprodangle = asin( (baserodlength/2) / siderodlength ) ;
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//echo ("Top rod angle: ", toprodangle);
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bottomrodangle = acos((baserodlength/2) / siderodlength ) ;
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//echo ("Bottom rod angle: ", bottomrodangle);
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distance = 38; // distance between the original holes
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// http://www.hhofstede.nl/modules/soscastoa.htm
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barlength = (distance / 2) / cos(30) ;
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//echo("Length of a single bar piece: ", barlength);
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module bar(){
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// bar is een balkje met afgeronde uiteinden en 2 gaten
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// + een tear op teardist van een van de gaten
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difference(){
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union(){
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cylinder(h=thickness, r=thickness/2, $fn=FN);
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translate([0,-thickness/2,0]){
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cube([barlength,thickness,thickness]);
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}
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translate([barlength,0,0]){
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cylinder(h=thickness, r=thickness/2, $fn=FN);
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}
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}
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union(){
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translate([0,0,-thickness/2]){
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cylinder(h=thickness*2, r=M6/2, $fn=FN);
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}
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translate([barlength,0,0]){
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translate([0,0,-thickness/2]){
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cylinder(h=thickness*2, r=M6/2, $fn=FN);
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}
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}
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translate([teardist+M6,-thickness,thickness/2]){
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rotate([0,0,90]){
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tear(thickness*2, M6/2);
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}
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}
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}
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}
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}
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module foot(){
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// draw a foot which is just a bunch of cubes
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// side 1
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translate([-14,3,0]){ cube([16,2,thickness]); }
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// side 2
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translate([-14,-5,0]){ cube([16,2,thickness]); }
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// bottom
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translate([-16,-6,0]){ cube([2,12,thickness]); }
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//top
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translate([-8,-4,0]){ cube([4,8,thickness]); }
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}
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module mainbody(){
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// in dit deel is de standaard hoek van het onderdeel altijd 120 graden
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// dit omdat het standaard frame altijd hoeken van 60 graden heeft
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// omdat de afstand tussen de 2 standaard gaten altijd de contante
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// 'distance' afstand is roteer ik 30 graden (90 - 60)
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// en wandel ik 'distance' die richting in vervolgens teken ik een bar
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// 90 + 120 - 60 = 150
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// (30 + 150 = 180 dus zo wordt ie omgekeerd)
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// dit allemaal niet erg parametrisch, want het moet gewoon
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// in het basis frame passen
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bar();
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footextend();
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rotate([0,0,-30]){
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translate([distance, 0,0 ]){
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rotate([0,0,150]){
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bar();
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extend();
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}
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}
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}
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}
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module extend(){
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// we staan al goed voor de hoek van 60, dus alleen verschil
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// verder roteren
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if ( partstyle == "bottom" ){
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rotate([0,0,60-bottomrodangle]){
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translate([-barlength,0,0]){
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bar();
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}
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}
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}
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if ( partstyle == "top") {
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rotate([0,0,30-toprodangle]){
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translate([-barlength,0,0]){
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bar();
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}
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}
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}
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}
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module footextend(){
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if ( partstyle == "top") {
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rotate([0,0,-30+toprodangle]){
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translate([-barlength,0,0]){
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bar();
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}
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}
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}
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if ( partstyle == "bottom" ){
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foot();
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}
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}
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module tear(height,radius){
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rotate([90,0,90]){
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cylinder(h=height,r=radius,$fn=FN);
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rotate([0,0,45]){
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cube([radius, radius, height]);
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}
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}
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}
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mainbody();
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