Calculation of ellipsoidal head's diameter
Calculation of ellipsoidal head's diameter
(OP)
Hii every body,
hope that anyone can help me how to calculate the diameter of raw material if i want to make an 2:1 ellipsoidal head. Is there maybe a certain formula for that case?
Thanks.
Best rgrds,
Adrian
hope that anyone can help me how to calculate the diameter of raw material if i want to make an 2:1 ellipsoidal head. Is there maybe a certain formula for that case?
Thanks.
Best rgrds,
Adrian





RE: Calculation of ellipsoidal head's diameter
each manufacturer has slightly different requirements
RE: Calculation of ellipsoidal head's diameter
the value you look for is Dp
RE: Calculation of ellipsoidal head's diameter
hakkik: thank you for your reference, will try this formula :)
RE: Calculation of ellipsoidal head's diameter
RE: Calculation of ellipsoidal head's diameter
I have two formulas from my 'boiler manufacturing text book' and both are practically used in shops:
For standard 2:1 elliptical head,
Formula 1: D = 1.223*d1+2*h*K0+2*delta
Formula 2: D = sqrt(1.38*(d1+S)^2+4*(d1+S)*(h+delta))
D, required diameter of the raw material before pressing
d1, ID of the head
h, height of the straight part
K0, elongation factor of manufacturing by pressing, typically K0=0.75
delta, reserved for machining
S, thickness of the head
I have also the more complicated formulas for non-standard head if you need them.
RE: Calculation of ellipsoidal head's diameter
so we have three (3) formulas so far
as i said...each manufacturer is slightly different in blank diameter