In this module, you will study about GD&T and its uses. After your first class, you will be able to understand the basics such as:
- Difference between traditional dimensioning and GD&T
- Benefits of GD&T
- How to read a feature control frame
- Technical standards- ASME Y14.5M-2009
- Different symbols used in GD&T, cover, and feature of size
In this module, you will learn about the governing rules of GD&T. After this class, you will have an understanding of:
- Rule No. 1 (i.e. Taylor principle a.k.a envelope principle)
- Rule No. 2 (Regardless of feature size)
- 14 symbols used in GD&T
- Flatness, straightness, cylindricity, and circularity tolerances
- MMC, LMC, and RFS conditions
- Various examples for form tolerances
In this segment, you will study the following topics:
- What are datums and how to apply datums to parts
- Datum reference features
- Datum feature modifiers
- How to calculate virtual condition
- Conjugated datums
At the beginning of this section, you will have built a good base for learning complex tolerances. In this section you will learn:
- Profile of a surface and profile of a line
- Perpendicularity tolerance, parallelism tolerance, and angularity tolerance
- Composite profile tolerance
- Various examples for orientation and profile tolerances
Position tolerance is the most widely used tolerance in GD&T.
In this section we will go through:
- Understanding true position
- Projected tolerance
- Composite tolerances
- Tolerance zones- cylindrical, rectangular, spherical
- Examples of position tolerance
By now, you will have enough knowledge to read an entire GD&T drawing and understand it. In this section, you will learn about some tolerances that are not widely used in the industry but are mentioned in the ASME standard
You will learn:
- Coaxiality
- Symmetricity
- Circular and Total Run Outs
- Examples
In this part, you will study complex GD&T drawings and understand every individual tolerance and the message the tolerance conveys.
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