height triangle generator

[Alerm]

hello to all
I wanted to ask, in the metric threads of a screw the height of the generator triangle as the calculation? ,or better what value do I attribute to him?
time ago I feel like I've already asked this question, and if I wasn't mistaken I was advised 0,69.
But I would like to know if there is a generalized and valid formula both for the screws,that mothers,because turning on the internet I'm just confusing a little too much ideas,so I prefer to ask you directly.

Thank you.

 

[MassiVonWeizen]

the debate to which it is probably this https://www.cad3d.it/forum1/threads/formula-per-triangolo-filettatura-con-sweep.31594/However on how to get the height of the triangle just the table on the balsdassini
alternative http://www.valvias.com/miscellanea-metric-thread-din-13.php?m=7https://lnx.vespaforever.net/forum/viewtopic.php?t=199

 

[Alerm]

That's what the discussion was.
in one of the figures of those links in fact h tot corresponds to 0,86 p for the mother and vine
on what values do I have to hold 0,61 as I had been advised or 0,86 and then apply the bevels?

 

[MassiVonWeizen]

on what values do I have to hold 0,61 as I had been advised or 0,86 and then apply the bevels?

as you wish. but in both images it is clear to what it refers to h (0,86p) and what h3 (0,61p)

 

[Alerm]

Thank you very much

 

[muzzetto]

for only love of theory, I remember that the angle of metric vines is 60°.
the height of the generator triangle is therefore equal to the height of an equilateral triangle of latp p (pass).
with embroidery pitagora h = p * radq(3) / 2 = p*0,86.
then apply the bevels.

Hi.
m

 

[MassiVonWeizen]

with embroidery pitagora h = p * radq(3) / 2 = p*0,86.

and it is what is written in the link of the valvas. and I am quite certain also, although not having a way to control, on the baldassini.
not only the formula of the triangle to dimensional the height of the ridge of the screw, but also serve the values of bottom throat and ridge that you can't guess.

 

[muzzetto]

That's right.
Also the throat rays and the truncatures of the heads are normative and proportional to the step of the vine p.
this to keep under control the size of the contact surface between screws and screws.
I believe I also use the manual weaving, of the expert.
in 99% of cases the coefficients indicated are perfect.
I prefer to check them out.
m