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Fundamentals of Geometric Dimensioning & Tolerancing (GD&T) Web Seminar RePlay

Geometric dimensioning and tolerancing (GD&T) is used as a symbolic way of showing specific tolerances on drawings. GD&T is a valuable tool that effectively communicates the design intent to manufacturing and inspection. It is governed by the technical standard ASME Y14.5-2018 (recently revised from the 2009 edition). This course introduces participants to the GD&T system, providing a working knowledge of the correct interpretation and application of each symbol, general rules, the datum system, and 'bonus' tolerance and highlighting some of the changes in the updated Y14.5 standard - - most notably, the deletion of concentricity and symmetry. The material is reinforced with many practice exercises.

What Will You Learn

By participating in this course, you'll be able to:

Explain the benefits of geometric tolerancing
Identify datum features and determine their order of precedence
Identify and interpret each of the characteristic symbols
Describe the material condition modifiers and how "bonus" tolerance occurs
Correctly interpret GD&T feature control frames, and explain the impact on manufacturing and inspection

Course Information

COURSE LENGTH

16.00 Hours

ACCESS PERIOD

90 Days

Is This Course For You

This course is ideal for anyone who has a need to apply or interpret geometric tolerances on a product print. Product engineers, manufacturing engineers, CAD designers, quality inspectors, and other engineering and manufacturing personnel will all benefit from a better understanding of design requirements; improved communication with customers and suppliers; and improving designs by taking advantage of bonus tolerance and other GD&T benefits. Participants should have an understanding of basic blueprint reading.

This course satisfies a requirement in the Product Engineering Tools and Methods Certificate Program.

Have colleagues who need this course? See Special Offers to the right.

Click on the Requirements tab to make sure you are properly equipped to interact with this course.

Materials Provided

90 days of online single-user access (from date of purchase)
16 hours of instructor-delivered content
Course workbook (downloadable, .pdf's)
Online learning assessment
Instructor follow up to your content questions
1.6 CEUs* (upon completion of all course modules and satisfactory assessment score)

*SAE International is authorized by IACET to offer CEUs for this course.

Course Requirements

Windows or macOS
Microsoft Edge, Mozilla Firefox, Google Chrome, Safari (Other OSs and browsers including mobile devices are not supported by may work)
Broadband-3Mbps minimum

Topics

Session 1

Why Use GD&T?
- Review of traditional dimensioning
- Benefits of GD&T
- Technical standards
- Definitions
- Basic dimensions
- How to read the feature control frame
- Rule #1: Size controls form

Session 2

Rules and the Form Symbols
- Rule #2: Assume RFS
- Flatness
- Surface straightness
- Circularity
- Cylindricity
- GD&T applied to a feature of size
- MMC modifier and "bonus tolerance"
- Virtual condition

Session 3

Datums
- Datum vs. datum feature
- Proper ways to label the datum feature
- The datum reference frame
- Primary, secondary, and tertiary datums
- Datums modified with "M" (MMB)
- Datum targets

Session 4

Position Tolerance
- Definition of "true position"
- Simple example of position on hole/pin
- Using the MMC or LMC modifiers
- The "boundary" concept
- Position on screw threads; pitch diameter rule
- Projected tolerance zone
- Composite position tolerancing on a pattern

Session 5

Profile and Orientation
- General definition of profile
- Profile of a line
- Profile of a surface
- Use of datums with profile
- Perpendicularity
- Angularity
- Parallelism

Session 6

Symmetry and Coaxial Controls
- Concentricity (and why it's been deleted in Y14.5)
- Symmetry (and why it's been deleted in Y14.5)
- Circular runout
- Total runout
Application of GD&T to a real-world part
Inspection and gaging of GD&T callouts
Wrap-up