Spring Design
Design information for engineers, such as spring calculation formulas,
which are the basis of spring design, can be found here.
- Tokai Spring HOME
- Spring Design
- Flat Spiral Springs: Calculation Examples
Flat Spiral
Springs
As an example, calculate the torque and stress in the following case using the values as follows.
E：2.06×105 (N/mm2) b：10 (mm)
t：1.0 (mm) l：1200 (mm)
In the case of the values above, the spring constant k can be calculated using the following formula.
Therefore, the torque delivered (M) per turn (360°) is expressed by the following formula, where 360° is represented as 2π.
Stress at that point is as the following formula.
