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 Y14.5M-1994, which was updated in 2009. 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. The material is reinforced with many practice exercises.

What Will You Learn

By participating in this course, you will 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.

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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) to the eight session, approximately 16 hour, recorded presentation
  • Course workbook (downloadable, .pdf's)
  • Online learning assessment
  • Instructor follow up to your content questions
  • 1.6 CEUs*/Certificate of Achievement (upon completion of all course content and a score of 70% or higher on the learning assessment)

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

Course Requirements

  • Windows 7, 8, 10 (other operating systems and mobile platforms are not supported but may work)
  • Internet Explorer 11, Mozilla Firefox 37, Google Chrome 42 (other browsers are not supported)
  • Broadband-1Mbps 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

Session 2
  • Rules and the Form Symbols
    • Rule #1: Size controls form
    • Rule #2: Assume RFS
    • Flatness
    • Surface straightness
    • Circularity
    • Cylindricity

Session 3
  • Bonus Tolerance
    • GD&T applied to a feature of size
    • Bonus and the MMC modifier
    • Virtual conditon
    • Gaging and inspection of GD&T

Session 4
  • Datums
    • Datum vs. datum feature
    • The datum reference frame
    • Primary, secondary, and tertiary datums

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
  • Position Tolerance I
    • True position
    • Position tolerance RFS
    • Using MMC or LMC
    • The "boundary" concept
    • The pitch diameter rule

Session 7
  • Position Tolerance II
    • Projected tolerance zone
    • Inspecting parts for position
    • Calculating tolerance values
    • Composite position tolerance

Session 8
  • Symmetry and Coaxial Controls
    • Concentricity
    • Symmetry
    • Circular runout
    • Total runout
  • Wrap-up