ormur
Ceci est une ancienne révision du document !
Table des matières
Ormur
Articulation
$fn = 100; diametre = 100; diametre_arbre = 6; segment(d = diametre, h = 100); rotate([0, 0, 120]) segment(d = diametre, h = 100); rotate([0, 0, -30]) { rotate([90, 0, 0]) cylinder(h = 100, d = 2); rotule(diametre); } module cone(angle, h = 0, d = 0, inverse = false) { if (!inverse) { if (d == 0) { cylinder(h = h, r1 = 0, r2 = tan(angle / 2) * h); } else { cylinder(h = (d / 2) / tan(angle / 2), d1 = 0, d2 = d); } } else { if (d == 0) { cylinder(h = h, r2 = 0, r2 = tan(angle / 2) * h); } else { cylinder(h = (d / 2) / tan(angle / 2), d2 = 0, d1 = d); } } } module chanfrein(d, r, angle = 120) { translate([r / tan(angle / 2) - r, 0, 0]) difference() { rotate([0, 90, 0]) cylinder(d = d * 1.2, h = r); translate([r, 0, 0]) rotate([0, 90, 0]) minkowski() { cylinder(d = d - 2 * r, h = 10); sphere(r); } translate([-10, 0, 0]) rotate([0, 90, 0]) cylinder(d = d - 2 * (r / tan(angle / 2)) * cos(angle - 90), h = 30); } } module segment(d, h) { alpha = 120; difference() { translate([sqrt(d * d - (d * d) / 4) / 3 , 0, 0]) { rotate([0, 90, 0]) cylinder(d = d, h = h); rotate([0, -90, 0]) cone(angle = alpha, d = 100, inverse = true); } translate([sqrt(d * d - (d * d) / 4) / 3 , 0, 0]) chanfrein(d, r = 5, angle = 180 - alpha / 2); sphere(d = d); rotate([0, 90,0]) cylinder(d = 3 * d / 4, h = 2 * h); } } module rotule(d) { difference() { sphere(d = diametre); sphere(d = 3 * diametre / 4); translate([-(diametre_arbre / 2) / cos(60), 0, 0]) rotate([0, 90, 0]) cone(angle = 60, h = diametre); translate([(diametre_arbre / 2) / cos(60), 0, 0]) rotate([0, -90, 0]) cone(angle = 60, h = diametre); } }
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ormur.1587444985.txt.gz · Dernière modification : 2020/04/21 04:56 de Mushussu