To calculate the Bonus Tolerance (BT):
\[ BT = (FV - AV) \times TR \]
Where:
A bonus tolerance is an additional tolerance given in a geometric dimensioning and tolerancing (GD&T) system that allows for greater manufacturing flexibility. It is typically associated with features like holes or slots that are designed to fit a mating part. The bonus tolerance comes into play when the actual feature size is less than the maximum material condition (MMC), allowing for additional tolerance on geometric controls such as position, profile, orientation, and runout. This can result in cost savings and increased efficiency in the manufacturing process.
Let's assume the following values:
Using the formula:
\[ BT = (10 - 9.5) \times 0.1 = 0.5 \times 0.1 = 0.05 \text{ mm} \]
The Bonus Tolerance is 0.05 mm.