Geometric Dimensioning & Tolerancing (GD&T) Comprehensive Fundamentals (Virtual Classroom)
Course Type:
Virtual Classroom
Course Number:
VCPD757Credits:
Language:
GD&T Comprehensive Fundamentals is an intense immersion into the rules, symbols, and other concepts of ASME Y14.5-2018.
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Schedule
This course commences at 9:30 AM and ends at 6:00 PM Eastern each day, with breaks throughout.
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GD&T Comprehensive Fundamentals is an intense immersion into the rules, symbols, and other concepts of ASME Y14.5-2018, the current American standard for Geometric Dimensioning & Tolerancing. The course explains key rules and all control symbols and modifiers; shows how to use basic dimensions, how to calculate virtual conditions, and how to select, identify, and reference datums correctly; demonstrates the distinction between two single-segment and composite tolerancing; and highlights significant differences between the ASME and ISO GD&T standards.
Several short exercises and lots of examples help trainees learn about this unique design language and how to use it to save money and improve quality. There is some homework–but not too much! To apply the concepts, participants should bring engineering drawings to the class, or send us drawings ahead of time so that we can incorporate them as teaching examples throughout the class.
Participants should have some familiarity with engineering drawings, but it’s not mandatory that they have any previous GD&T experience. Also, many participants looking for an advanced class discover that the fast pace and in-depth coverage challenge their current GD&T skills. Participants should come prepared to work hard and learn a lot, even if it’s not their first GD&T class. All our GD&T instructors are degreed engineers, have achieved Sr. Level Geometric Dimensioning and Tolerancing Professionals (GDTP) certification by ASME, and have years of experience teaching and consulting on GD&T.
By participating in this course, you will learn how to successfully:
- Describe the tolerance zones defined by each symbol.
- Determine when to use Rule #1 to control form and when other controls are appropriate.
- Recognize correct syntax for feature control frames.
- Relate common gauging and inspection methods to geometric tolerance zones defined by feature control frames.
- Correctly apply and interpret the Maximum Material Condition (MMC), Least Material Condition (LMC), and other modifiers.
- Assess various datums and datum schemes against product functionality and manufacturing and inspection performance.
- Recognize the need for product-specific GD&T guidelines and list the steps required to create them.
Who should attend?
You should have some familiarity with engineering drawings, but you do not need any previous GD&T experience. Many participants looking for advanced classes discover that their GD&T skills are challenged by the fast pace and in-depth coverage of our fundamentals course. Come prepared to work hard and learn a lot, even if it's not your first time through a GD&T class.
Course Materials (included in purchase of course)
- Digital course notes via ASME’s Learning Platform
This ASME Virtual Classroom course is held live with an instructor on our online learning platform. A Certificate of Completion will be issued to registrants who successfully attend and complete the course
Day One
Introduction
- People: Introductions
- Pretest (optional)
- GD&T defined: Attributes – What we want and what we’ll take.
- GD&T Boxes
- FCF
- Datum ID symbols
- Basic dimensions.
- Exercise:
- Symbols
- Names
- Feature control frames.
- Modifiers
- Exercise debrief: Overview of all control symbols
Features of Size vs. Surfaces (Map of the GD&T World)
- Definition of features of size
- Round / square
- Internal / external
- MMC
- Rule #1
- Free state, CF, and ST modifiers
- Exercises & debrief
Form of a surface
- Flatness
- Definition
- Rule #1
- Inspection
- Straightness
- Definition
- Rule #1
- Inspection
- FOS
- Roundness and Cylindricity
- Definition
- Rule #1
- 2-D vs. 3-D
- Profile of a Surface as a Form Control
- Equal bi-lateral
- Unilateral
- Unequal bi-lateral
- Non-uniform
- Exercise (Homework)
Day Two
Review & Debrief
Form of a Feature of Size
- Straightness vs. Rule #1
- RFS and Rule #2
- To M or not to M, that is the question
- Tables vs. graphs
- Inspection
- Flatness vs. Rule #1
- To M or not to M
- Inspection
- Exercises
Surface Datums
- Terminology: datums, datum features
- How to select a datum
- How to simulate a datum
- Fixtures & gages
- Exercises & debrief
Orientation of a Surface
- Perpendicularity
- Definition
- Inspection
- Angularity
- Definition
- Inspection
- Parallelism
- Rule #1
- Definition
- Inspection
- Tangent Plane Modifier
- Exercises & debrief
Profile of a Surface as an Orientation Control
- With datum references
- With datum references and basic distances/sizes
- Controlling SFOL
- Composite profile
- Two single-segment profile
- Dynamic profile symbol
- Exercise (Homework)
Day Three
Review/Preview and Exercise debrief
Orientation of a Feature of Size
- Definition
- To M or not to M
- Round, square, internal, & external examples
- Inspection
- Exercises & debrief
Using FOS and Surfaces controlled with profile as datums
- MMB: Shift happens
- RMB: No shift
- [BSC] and LMB
- Patterns of features used as a datum
- Datum targets
- Datum translation
- Custom degrees of freedom [x, y, z, u, v, w]
- Exercises and applications
- Debrief
Location
- Position
- Definition
- Maximum Material Boundary (Bonus)
- Inspection
- Round and square
- What’s included?
- Maximum Material Boundary (Shift)
- Least Material Boundary
- Projected Tolerance Zone
- MMC, RFS, and LMC revisited
- Patterns of features
- Composite vs. Two single-segment
- Fixed vs. Floating fasteners
- Exercises & debrief
- Runout
- Definition
- Circular
- Total
- Relationship to Parallelism
- Using modifiers
- Concentricity & Symmetry – Legacy controls (optional)
John Stolter
President, Stolter LLC
John brings to each class significant manufacturing engineering and design engineering experience, coupled with a unique ability to explain the role dimensioning and tolerancing plays in the product development process.
John-Paul Belanger, GDTP-S
President, Geometric Learning Systems
John-Paul Belanger is an internationally recognized instructor and consultant in geometric dimensioning and tolerancing.
Dorina Danciu Schemansky, GDTP-S
Dimensional Control Engineer, GD&T SME and Trainer
Dorina Danciu Schemansky is an experienced instructor and consultant specializing in GD&T (Geometric Dimensioning and Tolerancing) and Tolerance Stack Analysis.
More Information
Virtual Classroom
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