1 / 8

Tolerance Basics

Tolerance Basics. What is a Tolerance?. A tolerance is a specification found on a technical drawing that allows deviation in size from the nominal dimension Tolerances are ALWAYS required because nothing can be made perfect all of the time

meris
Télécharger la présentation

Tolerance Basics

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Tolerance Basics

  2. What is a Tolerance? • A tolerance is a specification found on a technical drawing that allows deviation in size from the nominal dimension • Tolerances are ALWAYS required because nothing can be made perfect all of the time • Picture a car that was made without tolerances………(think Chevy)

  3. Examples of Tolerances

  4. Incorrect Tolerances cause problems! Assume the Bearing Housings are in a Fixed Position, and think what if….. the distance between the shoulders on the shaft is too long? Too short? the shaft ends were a heavy press fit in the bearing? Loose Running fit? the bores in the bearing housings are too small or big? the location of the bearing housing bores from the mounting surface is not the same?

  5. Tolerances control the Fit

  6. How to determine the Fit?

  7. Translating a Fit to a Tolerance

  8. Applying these concepts in Manufacturing Class • Understand how various parts in an assembly must work together • Work Top-Down (Start at Assembly first) • Understand the differences between the types of fits before adding tolerances to your drawings • ASK FOR HELP IF YOU NEED IT

More Related