calculation of the diameter of a helical

[tommy74]

Good morning.

how do I calculate the diameter of a helid having the following data?

diameter 1095 mm
height 40 mm
step 400 mm
length 2500 mm
thickness 3 mm

 

[MassiVonWeizen]

the diameter of what?
I'd say ø1095, but it seems too easy. . .

cad is not a software but a type of software, enter the name and version of what you are using

 

[tommy74]

then I have a cylinder with an inner diameter of 1095 mm to this diameter I have to insert a coil with a height of 40 mm and a step of 400 mm.
Obviously when I go ironing the sheet metal band to give the step of 400 changes my outer diameter. How do you make us calculate it?

 

[tommy74]

sto using autocad 2013

 

[gerod]

Tommy, maybe before you show up (the golden rule of all forums) and you don't write in capital print that means shouting!
Thank you.