| Calculation | Cell reference | | --- | --- | | Pitch diameter (Dp) | =(B1+C1)/2 | | Addendum circle diameter (Da) | =B1+2 E1 | | Dedendum circle diameter (Df) | =C1-2 E1 | | Tooth thickness (s) | =(D1*PI()/180)*E1 |
: Behind the scenes, he used the formula for Module —the ratio of the pitch circle diameter to the number of teeth—to define the spline's basic proportions.
| Calculation | Cell reference | | --- | --- | | Pitch diameter (Dp) | =(B1+C1)/2 | | Addendum circle diameter (Da) | =B1+2 E1 | | Dedendum circle diameter (Df) | =C1-2 E1 | | Tooth thickness (s) | =(D1*PI()/180)*E1 |
: Behind the scenes, he used the formula for Module —the ratio of the pitch circle diameter to the number of teeth—to define the spline's basic proportions.
