Geometric Dimensioning & Tolerancing

This 28-hour course provides a thorough introduction to Geometric Dimensioning & Tolerancing (GD&T) for those with little or moderate levels of experience with GD&T. It covers definitions, concepts and language in ASME Y14.5-2009, Dimensioning and Tolerancing. This course is designed for anyone who designs, drafts, engineers, manufactures, estimates or inspects parts to engineering drawings. Particular emphasis is placed on topics applicable for those who design, manufacture and are responsible for quality assurance.

The goal is to bring participants to an operational level of understanding GD&T by studying the rules and geometric controls in ASME Y14.5.

Also covered is an introduction to Datum Reference Frames, inspections gauges and Material Condition Modifiers.

Textbooks: "GD&T Application and Interpretation" by Bruce A Wilson, Sixth Edition.

Major Topics:

• ASME Y14.5-200- Format & Content
• Fundamental Rules and Rule #1
• Tolerances of Form
• Tolerances of Orientation
• Tolerances of Location
• Datum Reference Frames
• Tolerances of Runout
• Tolerances of Profile
• Material Condition Modifiers
• MMSC Virtual Conditions

This course gives participants who already possess a solid level of skill with the Fundamentals of GD&T, an enhanced exposure to the Intermediate level of geometric controls within ASME &14.5-2009. The course begins with a brief review of the fundamentals of GD&T. New concepts include expanded investigation into Datum theory. Also covered is the emphasis on composite feature control frames for position and profile.

Textbooks: "GD&T Application and Interpretation" by Bruce A Wilson, Sixth Edition.

Major Topics:

• Composite FCF-Profile of a Surface
• Composite FCF-Position
• Datum Features of Size
• Datum Feature Shift
• Multi Segment FCFs
• MMC & LMC Virtual Conditions
• Actual Mating & Minimum Material Envelopes
• Resultant Condition Boundaries
• Datum Targets
• Datum Patterns

This course gives participants with an intermediate level of skill with GD&T, an enhanced exposure to the application of the geometric controls to mechanical drawings, and by extension, digital definition products. Brief review of both the fundamentals and intermediate level controls of GD&T.

The majority of the class time will focus on applying the proper geometric controls to sample drawings and examining the associated datum reference frames, tolerance zones, the LMC and the MMC Virtual conditions, the resultant condition boundaries and wall thickness calculations. Concepts covered include fixed and floating fastener conditions, multi-segment and composite feature control frames, datum features of size, datum feature shift and datum targets.

Textbooks: "GD&T Application and Interpretation" by Bruce A Wilson, Sixth Edition.

Major Topics:

• Composite FCF-Profile of a Surface
• Composite FCF-Position
• Datum Features of Size
• Datum Feature Shift
• MMC & LMC Virtual Conditions
• Datum Targets
• Resultant Condition Boundaries
• Drawing Applications