GD&T Part 2 (Advanced)

Course Summary

This advanced course helps students apply GD&T to achieve the mating and functional requirements of their parts.

Event Details

16 hours: 2 in-person sessions or 4 virtual sessions
Instructor-led classroom training, in-person and in-groups, with lots of discussion and working sessions to practice learned skills.
Available at QSG’s training facilities, virtually, or on-site at your organization

Textbook: Geo Tol Pro 2020, TCI

Description

Even with an understanding of the fundamentals of Geometric Dimensioning & Tolerancing (GD&T), many professionals still lack the confidence to expertly and deliberately apply geometric tolerancing to clearly define their product designs. Like with any language, this deeper understanding is built off the fundamentals.

The Advanced course helps students apply GD&T to achieve the mating and functional requirements of their parts. This course reinforces fundamentals and provides applications-based exercises where students apply what they have learned. Application practice exercises and calculations are performed individually and in teams. The use of functional dimensioning and tolerancing schemes and its effect on assemblies is emphasized throughout the course. Students will expand their understanding of the implications of their specifications on function, manufacturing, inspection, and quality. Students will gain experience and confidence selecting the product definition strategy for an assembly by working more advanced application examples with their peers under the guidance of an expert in a classroom setting.

Who Should Attend

This course is designed for anyone in engineering, manufacturing, and quality assurance who need to define engineering requirements with drawings, or properly interpret and act upon the information found in engineering drawings.

Learning Objectives

Through training, participants will learn the following:

  • Deepen your understanding of geometric controls by analyzing inspection data to verify features conform to drawing specifications
  • Apply the geometric language to real parts
  • Specify datum reference frames properly to represent the part’s functional requirements, including the use and interpretation of datum shift where appropriate
  • Apply geometric controls and symbols properly to suit the mating and functional requirements
  • Practical and useful symbols, modifiers, and notations not typically presented in basic courses
  • Thoroughly and completely define geometric requirements on a variety of engineering drawings

Course Outline

Basic GD&T Review
Variation and tolerance, drawing requirements, variation in perspective, 3D & Standards for interpretation
Engineering product definition & downstream processes, bonus tolerance, rule #1, exceptions & overrides
Ambiguity, types of variation & tolerances, unrelated & related AMEs, unrelated & related MMEs
Datums and degrees of freedom
Establishing datum reference frames including datum feature precedence and datum modifiers
Secondary datum feature at MMB, tertiary datum feature at MMB, calculating allowable datum feature shift, and applications for datum feature modifiers

Advanced Datum Reference Frame Concepts
Moveable datum targets
Coaxial holes as a datum feature
Rotational control
Simultaneous requirements
Multiple datum reference frames
Customized datum reference frame
Applications and establishment of the correct functional datum reference frame

Profile Control Concepts
Review of profile including composite profile
Non-uniform profile
Dynamic profile
Versatility of profile
Profile verification applications & gage design
Accumulation of variation across profile tolerances

Position Control Concepts
Review of composite tolerancing and dual segment position tolerancing
Rectangular tolerance zone, spherical tolerance zone, conical tolerance zone, position boundary
Versatility of position
Position verification application exercises & gage design
Determining the correct position tolerance

Boundaries
Boundaries and their applications in design and tolerance analysis.
Determining Inner & outer boundaries for features with and without modifiers using various datum reference frames.
Comparison among circular runout, total runout, position, and profile for coaxial control.
Applications of various coaxial tolerances.
Accumulation of variation between coaxial features.

Prerequisites

At least one Basic GD&T workshop/course is required as a prerequisite. It’s essential that individuals understand the underlying principles that the Basic course is focused on teaching. In addition, students should have at least 1 year of on-the-job experience applying and / or interpreting GD&T.

Instructors

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