To determine when to use Profile of a Surface or Coordinate Dimensioning, let’s first look at what the 2009 ASME Y14.5 Standard tells us. Paragraph 2.1.1 was revised to emphasize/encourage the use of basic dimensions in combination with geometric tolerancing...
How are tolerance limits defined? The previous articles in our Intro to Tolerances series have answered the questions, “What is a tolerance?” and “Why use tolerances?” This third and final article in the series explores how tolerance limits are determined...
Why use tolerances? In our previous article, “What is a Tolerance?” we introduced the concept of manufacturing tolerances and why they are necessary. In this article, we are going to focus on the benefits of using tolerances in our part...
What is a tolerance? If you take a look at an engineering drawing, you will notice that there are always limits, or tolerances, placed on a dimension. Why does the designer do this? When a part is designed, the CAD...
The ASME 2018 Y14.5 GD&T Standard contains a few significant changes, including the elimination of the concentricity constraint. Check out this video article for more on this change!
Properly defining, qualifying, and referencing datum features is essential to ensure that parts are properly manufactured and inspected. To begin exploring proper use of datum features, it is helpful if we first review definitions and rules for selecting, identifying, and...