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d = 2;
h = 10;
b = 30;
alpha = 30;
r = 2.5;
rBohrung = 1;
gravurTiefe = 0.5;
difference() {
union() {
rotate_extrude(angle = 180, $fn = 100)
translate([h/2,0,0])
circle(r = d/2, $fn = 100);
for (i=[-1:2:1]) {
translate([i*h/2,0,0])
rotate([90,0,0])
linear_extrude(b)
circle(r = d/2, $fn = 100);
rotate([0,90*(i+1),0]) {
translate([0,-b,0])
rotate_extrude(angle = -alpha, $fn = 100)
translate([h/2,0,0])
circle(r = d/2, $fn = 100);
translate([-h/2*cos(alpha),-b-h/2*sin(alpha),0])
rotate([90,0,alpha])
linear_extrude((h/2-r)/tan(alpha))
circle(r = d/2, $fn = 100);
}
}
translate([0,-b-h/2*sin(alpha)+r*sin(180-alpha)-(h/2-r)/tan(alpha)*cos(alpha),0]) {
rotate([0,0,-180+alpha])
rotate_extrude(angle = 180 - 2*alpha, $fn = 100)
translate([r,0,0])
circle(r = d/2, $fn = 100);
rotate_extrude(angle = 360, $fn = 100)
translate([rBohrung + d/2,0,0])
circle(r = d/2, $fn = 100);
}
translate([0,0,-d/2])
linear_extrude(d)
difference() {
union() {
translate([-h/2,-b])
square([h,b]);
for (i=[0:1])
translate([0,-b*i,0])
circle(r = h/2, $fn = 100);
translate([0,-b-h/2*sin(alpha)+r*sin(180-alpha)-(h/2-r)/tan(alpha)*cos(alpha)])
circle(r = r, $fn = 100);
polygon([
[-h/2*cos(alpha),-b-h/2*sin(alpha)],
[-r*cos(alpha),-b-h/2*sin(alpha)-(h/2-r)/tan(alpha)*cos(alpha)],
[r*cos(alpha),-b-h/2*sin(alpha)-(h/2-r)/tan(alpha)*cos(alpha)],
[h/2*cos(alpha),-b-h/2*sin(alpha)],
]);
}
translate([0,-b-h/2*sin(alpha)+r*sin(180-alpha)-(h/2-r)/tan(alpha)*cos(alpha)])
circle(r = rBohrung + d/2, $fn = 100);
}
}
translate([0,-b/2,d/2-gravurTiefe])
rotate([0,0,90])
linear_extrude(2*gravurTiefe)
text("links", size = 0.8*h, halign = "center", valign = "center");
translate([0,-b/2,-d/2+gravurTiefe])
rotate([0,180,-90])
linear_extrude(2*gravurTiefe)
text("rechts", size = 0.8*h, halign = "center", valign = "center");
}
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