GD&T (Geometric Dimensioning and Tolerancing)

$ 995.00

IN PARTNERSHIP WITH

Description

INTRODUCTION

GD&T (Geometric Dimensioning & Tolerancing) is an international symbolic language that if often used on mechanical engineering drawings  to better define a product

This two-day course covers the GD&T system per ASME Y14.5 (both the 2009 and the new 2018 versions). Participants will learn why GD&T reduces costs, how to interpret the symbols, the importance of datums, how to apply the tolerances correctly, and the impact on manufacturing and inspection. The class is mainly a lecture format, with ample opportunity for questions, and participants are welcome to bring sample prints (with or without GD&T already applied) to discuss with the instructor during breaks or after the class.

LEARNING OBJECTIVES

On completion of this workshop, the participant 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 14 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.
  • Determine which symbols to use based on part or assembly function.
  • Explain the biggest changes that were enacted in the new 2018 standard

ALL of our courses are developed based on decades of front-line industry experience of the instructor.

WHO SHOULD TAKE THIS COURSE

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 becoming fluent in GD&T.

PREREQUISITES

Participants should have knowledge of basic blueprint reading. If not, you may want to register for our Basic Blueprint Reading class prior to taking this class.

COURSE CONTENT 

This is a 2-DAY CLASSROOM TRAINING with an instructor that has decades of front-line industry experience. Alternately, a Virtual Workshop with a Live Trainer is also available. The virtual workshop is conducted in 4 sessions (4 hours each) over a live web based interactive class.

All material covered during the training will be in accordance with the new edition of the US national standard, ASME Y14.5-2018. Each person attending will receive a training manual (~190 pages, coil bound) as the main handout, which details the concepts of GD&T and also includes many examples of the proper application of tolerances.

A non-graded test can be given in class to help participants gauge their understanding of the concepts. There will be many other exercises worked into the class to allow practice of the concepts as they are covered.

TOPICS COVERED:

  • Drawings and Dimensioning
    • Importance of engineering drawings
    • The need for geometric dimensioning and tolerancing
    • Quality issues – how GD&T fits into other standards
    • GD&T standard:  ASME Y14.5
  • Introduction to GD&T Symbols and Terms
    • Definitions – feature, feature of size, actual mating envelope
    • Material conditions – MMC, LMC, RFS
    • How to read a feature control frame
  • Rules and Concepts of GD&T
    • Rule #1 – Size controls form
    • Rule #2 – Implied RFS
    • Basic dimensions
    • Bonus tolerance
  • Form Tolerances
    • Flatness
    • Straightness
    • Circularity
    • Cylindricity
    • Straightness and flatness applied to a feature of size
  • Datums
    • Purpose of datums in GD&T
    • The datum reference frame – primary, secondary, tertiary
    • How to select datums for a part
    • Feature-of-size datums
    • Datums with the “M” modifier
    • Compound datum features
    • Datum targets
  • Profile Tolerances
    • General definition of profile
    • Profile of a line
    • Profile of a surface
    • Profile with datum references
    • Composite profile control
  • Orientation Tolerances
    • Perpendicularity
    • Angularity
    • Parallelism
  • Location Tolerances
    • Definition of “true position”
    • Application of position at RFS
    • Using position with MMC or LMC
    • Composite position control
    • Projected tolerance zone
    • Concentricity – why it was recently deleted from Y14.5
    • Symmetry – why it was recently deleted from Y14.5
  • Runout Tolerances
    • Difference between runout and other circular controls
    • Circular runout
    • Total runout
  • Wrap-up and Course Evaluation
    • Discuss sample prints

INSTRUCTOR 

John-Paul Belanger is a nationally recognized instructor and consultant in geometric dimensioning and tolerancing (GD&T).  In addition to GD&T, he instructs other courses related to blueprints and product design, including Basic Print Reading and Tolerance Stacks.  He is a veteran of classroom training and interactive web-based training.

For over 25 years Mr. Belanger has adapted these courses to a wide range of participants across North America and Europe.  He is certified by the American Society of Mechanical Engineers as a Senior-Level GD&T Professional, and he holds a degree in aerospace engineering from the University of Michigan specializing in aircraft design and aviation safety.

 

LOGISTICS 

This training is offered both as a classroom and a virtual training. Locations and Dates are available in the signup options.

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