Unknow profile shift coefficient

[lucadueberto]

hi to all
i have a question
i have an unknow gear: note number of teeth, int and ext diameter and module i need to know the shift coefficient

any ideas? i try but i dont't know any formula ..

thank you very much. Lucia

 

[3DDave]

You need to measure over wires to find the shift. If you don't know the formulae then try

https://evolventdesign.com/pages/gear-measurement-over-pins-calculator

 

[mfgenggear]

Lucia

best bet would be to have a gear shop reverse engineer for a cost. the have unknown gear program that will make short work of it.
profile shift or any thing else, also there are cheap gear programs, very reasonable

 

[lucadueberto]

Thank you for the reply but i would try to calculate the shift coefficient using a formula
Using a math formula with excell for example
Someone knew how to calculate? Thank you
Lucia

 

[lbmakem]

Hi Lucia, first what makes you think there is a shift Coeficient, secondly why can't they be standard gears.