The real Leigh
Diamond
- Joined
- Nov 23, 2005
- Location
- Maryland
I just ran across a very good example of where asymmetric tolerancing is appropriate.
This is a press-fit threaded standoff:
Note the tolerance on the mounting hole, into which the standoff is pressed.
The diameter of the hole affects the performance of the part. If the hole is nominal, the part will be retained more securely and have greater resistance to torque.
Increasing the mounting hole diameter by .0015" and specifying the tolerance as ±0.0015" would not achieve the same results.
- Leigh
This is a press-fit threaded standoff:
Note the tolerance on the mounting hole, into which the standoff is pressed.
The diameter of the hole affects the performance of the part. If the hole is nominal, the part will be retained more securely and have greater resistance to torque.
Increasing the mounting hole diameter by .0015" and specifying the tolerance as ±0.0015" would not achieve the same results.
- Leigh