Probably not the best code, but works for me for 'none standard'
threads. Simply draw a thread profile, and rotate it, and step up. For
internal threads, scale in x, y for tolerance, and difference from nut.
//threadrw.scad
p = 5; //pitch
t = 2.5; // depth of thread
l = 60; //length of thread
od = 15; //outside diam
/*
module profile(){ //square thread
square([1,p]);
square ([t+1,t]);
}
*/
/*
module profile(){ //buttress thread
polygon (points=[[0,0],[0,p],[1,p],[1,p-1],[t,1],[t,0]]);
}
*/
module profile(){ //triangle thread
polygon
(points=[[0,0],[0,p],[1,p],[1,p-(p/10)],[t,(p/2)+(p/10)],[t,(p/2)-(p/10)],[1,p/10],[1,0]]);
}
module section(){ // generated
rotate([90,0,0])
linear_extrude(od/60)
{
square([(od-t)/2,p]);
translate ([((od-t)/2)-1,0,0])
profile();
}
}
module stud(){
num=360*(l/p);
for (j=[0:1:num])
{
translate([0,0,j*p/360])
rotate([0,0,j])
section();
}
}
//profile();
stud();
On 14/10/2024 03:28, Michael Marx (spintel) via Discuss wrote:
