Geometric Dimensioning and Tolerancing (GD&T) Fundamentals
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Geometric Dimensioning and Tolerancing (GD&T) Fundamentals

Seminar Content

To better define a product to a customer or supplier, Geometric Dimensioning and Tolerancing (GD&T) is often 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 Y14.5-2009, published by the American Society of Mechanical Engineers.

This two-day seminar covers all aspects of GD&T. In additional to presenting the theory, multiple examples will be provided to show specific applications. Participants are welcome to bring sample prints to the class for discussion or private consultation.

Who Should Attend

This seminar is designed for product engineers, CAD designers, manufacturing supervisors, quality personnel, program managers, and others who either create or read mechanical drawings.

Recommended Training and/or Experience

Participants should have a basic understanding of blueprint reading.

Seminar Materials

Each participant will receive extensive course material.

Seminar Goals

  • Describe the tolerance zone for each GD&T symbol
  • Determine when to use Rule #1 to control form or when other form controls are appropriate
  • Calculate the virtual condition for a given feature
  • Recognize correct syntax for feature control fames
  • Define datum and datum feature, and correctly interpret the relationship of datums to a geometric tolerance
  • Correctly apply and interpret the MMC modifier
  • Describe how various geometric tolerances should be measured

Seminar Outline

  • The Need for GD&T
  • Definitions and Rules
  • Form
  • Datums
  • Profile Tolerances
  • Orientation
  • Position
  • Other Types of Location

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