Fits, Limits, and Tolerances
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Basics
- This page goes over Fits, Limits, and Tolerances, and the application of them in design
- Essentially nothing is perfect, and getting something closer to perfect is costly/time intensive (see degrees of flatness / Lapping and whatnot) so you define what is acceptable for the application (ie specific hole for a shaft, etc)
- By doing this ahead of time, you take the need for "fiddling" out of the assembly / iterative design process
- Press Fit is a common example
Internal Links
External Links
- The Wikipedia Page on Limits and Fits
- The Wikipedia Page on Engineering Fits
- The Wikipedia Page on Engineered Tolerances
- Limits, Fits, and Tolerance Calculator (ISO System)
- A PDF by the Department of Mechanical & Aerospace Engineering at the University of Florida titled "Typical Tolerances of Manufacturing Processes"