Fundamentals of Geometric Dimensioning & Tolerancing (GD&T) WB0933
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.
Learning Objectives
By participating in this web seminar, 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
Who Should Attend
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.
- 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
- 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
- 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
- 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
- Profile and Orientation
- General definition of profile
- Profile of a line
- Profile of a surface
- Use of datums with profile
- Perpendicularity
- Angularity
- Parallelism
- 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
Registration for this live web seminar is available on a per-person basis, similar to purchasing a seat in a classroom. Participants attend an online session from work or home; anywhere with a PC with internet access and a telephone. The fee includes one connection to the conference calls (toll free telephone number provided for U.S. and select countries*) and assigned personal ID number; one connection to SAE's online training center (via WebEx); and access to a secure course in the SAE Learning Center that contains the presentations, supplemental materials, and assignments.
Registrations will be accepted until 5:00 p.m. the day before the start of the web seminar, but early registration is encouraged to allow for pre-course set-up and instructions.
*Global toll-free telephone numbers are provided for many countries outside the U.S., but are limited to those on the WebEx call-in toll-free number list. Check here to see if your country has a global call-in toll free telephone number for this web seminar. If your country is not listed, you may still connect using the US/Canada Call-in toll number or Voice over Internet Protocol (VoIP).
Although WebEx Training Manager will automatically launch when you join the web seminar, you or your system administrator are encouraged to download the plug-in in advance to help ensure successful setup. Click here, then follow the onscreen instructions.
Multiple Seat Discount - 50% off more than one! - Register one individual at the appropriate list or member price, then register as many additional employees at half off the list price. To receive the discount, register all individuals at the same time or mention the confirmation number for the first registrant. The offer is good for only the same web seminar series and dates. All registrants will receive a personal account and opportunity for CEUs.
Discount applies to web seminar(s) of equal or lesser list fee. Registration by phone with SAE Customer Service is required to take advantage of these discounts.
Cancellations
If you cannot attend, you may register a substitute in your place or transfer your registration to a future offering. A full refund is issued if you notify SAE at least 14 days prior to web seminar start date. If canceled less than 14 days prior, the full fee is charged. For $50, you may process a one-time transfer to a future offering within one year of canceled web seminar. Canceling may reduce group discounts. To cancel, transfer or send a substitute, call SAE Customer Service at 1-877-606-7323 (US & Canada only) or 1-724-776-4970.
John-Paul Belanger
John-Paul Belanger is president of Geometric Learning Systems, a consulting firm specializing in geometric dimensioning and tolerancing (G D & T). For over twenty years, he has trained people throughout North America and Europe in the proper interpretation and application of G D & T per the Y14.5 standard by using practical examples. Mr. Belanger is certified by the American Society of Mechanical Engineers as a Senior G D & T Professional, and has worked with a wide range of companies in the automotive, aerospace, electronic, and other industries to apply tolerances and perform stack calculations. He holds a B.S. in aerospace engineering from the University of Michigan specializing in aircraft design and safety.
Fees: $995.00
SAE Members: $796.00 - $896.00
1.6 CEUs
You must complete all course contact hours and successfully pass the learning assessment to obtain CEUs.
Testimonial
"This course gave a great overview of GD&T principles, and pointed me in the right direction for further training."Jay Johnson
Motorsports Design Engineer
Goodridge USA
"Very informative and helped achieve a much better understanding of GD&T."
Paul Chamberlain
Product Development Engineer
JSP
For additional information, contact SAE Customer Service 1-877-606-7323 (724-776-4970 outside the U.S. and Canada) or at CustomerService@sae.org.
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