When boring a hole with a +.001 tolerance, how should you adjust the tool offset in X direction to avoid overshooting?

When boring a hole with a +.001 tolerance, how should you adjust the tool offset in X direction to avoid overshooting?

• A. Add +.002
• B. Subtract -.002
• C. Leave it unchanged
• D. Add +.001

Answer: (B)

In situations where you're boring a hole with a tolerance of +.001, adjusting the tool offset appropriately in the X direction is crucial to avoid creating a hole that is larger than the desired size. When you are tooling for a specific size and you are close to your tolerance limit, it's important to account for any potential overshoot. If the tool's current offset positioning leads you to risk going over the tolerance, subtracting from the tool offset helps to pull the tool back slightly. By decreasing the offset by .002, you create a situation where the actual machining will yield a final hole size that remains within the specified tolerance, preventing an oversize condition. The precise calculation reflects a conservative approach to ensure that the final hole dimension honors the upper limit of tolerance (+.001). Thus, making an adjustment to subtract .002 effectively offsets any potential deviations that could lead to overshooting the target size.

In situations where you're boring a hole with a tolerance of +.001, adjusting the tool offset appropriately in the X direction is crucial to avoid creating a hole that is larger than the desired size.

When you are tooling for a specific size and you are close to your tolerance limit, it's important to account for any potential overshoot. If the tool's current offset positioning leads you to risk going over the tolerance, subtracting from the tool offset helps to pull the tool back slightly. By decreasing the offset by .002, you create a situation where the actual machining will yield a final hole size that remains within the specified tolerance, preventing an oversize condition.

The precise calculation reflects a conservative approach to ensure that the final hole dimension honors the upper limit of tolerance (+.001). Thus, making an adjustment to subtract .002 effectively offsets any potential deviations that could lead to overshooting the target size.